[dragonfly.git] / share / misc / bsd-family-tree

The UNIX system family tree: Research and BSD
---------------------------------------------

First Edition (V1)
     |
Second Edition (V2)
     |
Third Edition (V3)
     |
Fourth Edition (V4)
     |
Fifth Edition (V5)
     |
Sixth Edition (V6) -----*
       \                |
        \               |
         \              |
Seventh Edition (V7)    |
            \           |
             \        1BSD
             32V        |
               \      2BSD---------------*
                \    /                   |
                 \  /                    |
                  \/                     |
                 3BSD                    |
                  |                      |
               4.0BSD                2.79BSD
                  |                      |
               4.1BSD --------------> 2.8BSD
                  |                      |
              4.1aBSD -----------\       |
                  |                \     |
              4.1bBSD                \   |
                  |                    \ |
      *------ 4.1cBSD --------------> 2.9BSD
     /            |                      |
Eighth Edition    |                   2.9BSD-Seismo
     |            |                      |
     +----<--- 4.2BSD               2.9.1BSD
     |            |                      |
     +----<--- 4.3BSD -------------> 2.10BSD
     |            |               /      |
Ninth Edition     |              / 2.10.1BSD
     |         4.3BSD Tahoe-----+        |
     |            |              \       |
     |            |                \     |
     v            |                  2.11BSD
Tenth Edition     |                      |
                  |                  2.11BSD rev #430
               4.3BSD NET/1              |
                  |                      v
               4.3BSD Reno
                  |
   *---------- 4.3BSD NET/2 -------------------+-------------*
   |                    |                      |             |
386BSD 0.0              |                      |           BSD/386 ALPHA
   |                    |                      |             |
386BSD 0.1 ------------>+                      |           BSD/386 0.3.[13]
   |     \              |                  4.4BSD Alpha      |
   |     386BSD 1.0     |                      |           BSD/386 0.9.[34]
   |                    |                  4.4BSD            |
   |                    |                    / |             |
   |                    |   4.4BSD-Encumbered  |             |
   |                 NetBSD 0.8                |           BSD/386 1.0
   |                    |                      |             |
FreeBSD 1.0          NetBSD 0.9                |           BSD/386 1.1
   |                    |           .----- 4.4BSD Lite       |
FreeBSD 1.1             |          /   /       |     \       |
   |                    |         /   /        |      \      |
FreeBSD 1.1.5       .---|--------'   /         |       \     |
   |               /    |           /          |        \    |
FreeBSD 1.1.5.1   /     |          /           |         \   |
   |             /   NetBSD 1.0 <-'            |          \  |
   |            /       |                      |           \ |
FreeBSD 2.0 <--'        |                      |           BSD/OS 2.0
   |                     \                     |             |
FreeBSD 2.0.5             \                    |           BSD/OS 2.0.1
   |                 .-----\------------- 4.4BSD Lite2       |
   |                 |      \             |  |   |   |       |
   |                 | .-----|------Rhapsody |   |   |       |
   |                 | |     |        NetBSD 1.3 |   |       |
   |                 | |     |           OpenBSD 2.3 |       |
   |                 | |     |                BSD/OS 3.0     |
FreeBSD 2.1          | |     |                               |
 |   |               | |  NetBSD 1.1 ------.               BSD/OS 2.1
 | FreeBSD 2.1.5     | |     |              \                |
 |     |             | |  NetBSD 1.2         \             BSD/OS 3.0
 | FreeBSD 2.1.6     | |     |  \          OpenBSD 2.0       |
 |     |             | |     |   \             |             |
 | FreeBSD 2.1.6.1   | |     |    \            |             |
 |     |             | |     |     \           |             |
 | FreeBSD 2.1.7     | |     |      |          |             |
 |     |             | |     |  NetBSD 1.2.1   |             |
 | FreeBSD 2.1.7.1   | |     |                 |             |
 |                   | |     |                 |             |
 |                   | |     |                 |             |
 *-FreeBSD 2.2       | |     |                 |             |
 |        \          | |     |                 |             |
 |     FreeBSD 2.2.1 | |     |                 |             |
 |         |         | |     |                 |             |
 |     FreeBSD 2.2.2 | |     |             OpenBSD 2.1       |
 |         |         | |     |                 |             |
 |     FreeBSD 2.2.5 | |     |                 |             |
 |         |         | |     |             OpenBSD 2.2       |
 |         |         | |  NetBSD 1.3           |             |
 |     FreeBSD 2.2.6 | |     |    |            |             |
 |         |         | |     | NetBSD 1.3.1    |           BSD/OS 3.1
 |         |         | |     |    |        OpenBSD 2.3       |
 |         |         | |     | NetBSD 1.3.2    |             |
 |     FreeBSD 2.2.7 | |     |    |            |             |
 |         |         | |     |    |            |           BSD/OS 4.0
 |         v         | |     |    |            |             |
 |     FreeBSD 2.2.8 | |     |    |            |             |
 |                   | |     |    |        OpenBSD 2.4       |
FreeBSD 3.0 <--------* |     |    v            |             |
 |                     |     | NetBSD 1.3.3    |             |
 *---FreeBSD 3.1       |     |                 |             |
 |       |             |     |                 |           BSD/OS 4.0.1
 |   FreeBSD 3.2----*  |  NetBSD 1.4       OpenBSD 2.5       |
 |       |          |  |  |  |    |            |             |
 |       |          |  |  |  |    |            |             |
 |       |          |  |  |  |    |            |             |
 |   FreeBSD 3.3    |  |  |  | NetBSD 1.4.1    |             |
 |       |          |  |  |  |    |        OpenBSD 2.6       |
 |   FreeBSD 3.4    |  |  |  |    |            |             |
 |           |      |  |  |  |    |            |           BSD/OS 4.1
FreeBSD 4.0  |      |  |  |  | NetBSD 1.4.2    |             |
 |           |      |  |  |  |    |            |             |
 |           |      |  |  |  |    |            |             |
 |   FreeBSD 3.5    |  |  |  |    |        OpenBSD 2.7       |
 |           |      |  |  |  |    |            |             |
 |   FreeBSD 3.5.1  |  |  |  |    |            |             |
 |                  |  |  |  |    |            |             |
 *---FreeBSD 4.1    |  |  |  |    |            |             |
 |      |           |  | (?) |    |            |             |
 |   FreeBSD 4.1.1  |  |  /  |    |            |             |
 |      |           |  | /   |    |            |             |
 |   FreeBSD 4.2   Darwin/   | NetBSD 1.4.3    |             |
 |      |         Mac OS X   |             OpenBSD 2.8     BSD/OS 4.2
 |      |             |      |                 |             |
 |      |             |      |                 |             |
 |      |           10.0  NetBSD 1.5           |             |
 |   FreeBSD 4.3      |      |    |            |             |
 |      |             |      |    |        OpenBSD 2.9       |
 |      |             |      | NetBSD 1.5.1    |             |
 |      |             |      |    |            |             |
 |   FreeBSD 4.4-.    |      | NetBSD 1.5.2    |             |
 |      |        | Mac OS X  |    |            |             |
 |      |        |   10.1    |    |        OpenBSD 3.0       |
 |   FreeBSD 4.5 |    |      |    |            |             |
 |      |         \   |      |    |            |           BSD/OS 4.3
 |   FreeBSD 4.6   \  |      |    |        OpenBSD 3.1       |
 |      |           \ |      | NetBSD 1.5.3    |             |
 |   FreeBSD 4.6.2 Mac OS X  |                 |             |
 |      |            10.2    |                 |             |
 |   FreeBSD 4.7      |      |                 |             |
 |      |             |   NetBSD 1.6       OpenBSD 3.2       |
 |   FreeBSD 4.8      |      |    |            |             |
 |      |             |      | NetBSD 1.6.1    |             |
 |      |--------.    |      |    |        OpenBSD 3.3     BSD/OS 5.0
 |      |         \   |      |    |            |             |
 |   FreeBSD 4.9   |  |      |    |        OpenBSD 3.4     BSD/OS 5.1 ISE
 |      |          |  |      |    |            |
 |      |          |  |      | NetBSD 1.6.2    |
 |      |          |  |      |    |            |
 |      |          |  |      |    |        OpenBSD 3.5
 |      |          |  |      |    v            |
 |   FreeBSD 4.10  |  |      |                 |
 |      |          |  |      |                 |
 |   FreeBSD 4.11  |  |      |                 |
 |                 |  |      |                 |
 |                  `-|------|-----------------|---------------------.
 |                    |      |                 |                      \
FreeBSD 5.0           |      |                 |                       |
 |                    |      |                 |                       |
FreeBSD 5.1           |      |                 |                 DragonFly 1.0
 |          \         |      |                 |                       |
 |           ----- Mac OS X  |                 |                       |
 |                   10.3    |                 |                       |
FreeBSD 5.2           |      |                 |                       |
 |      |             |      |                 |                       |
 |   FreeBSD 5.2.1    |      |                 |                       |
 |                    |      |                 |                       |
 *-------FreeBSD 5.3  |      |                 |                       |
 |           |        |      |             OpenBSD 3.6                 |
 |           |        |   NetBSD 2.0           |                       |
 |           |        |      | |  |            |                DragonFly 1.2.0
 |           |     Mac OS X  | | NetBSD 2.0.2  |                       |
 |           |       10.4    | |  |            |                       |
 |       FreeBSD 5.4  |      | |  |            |                       |
 |           |        |      | |  |        OpenBSD 3.7                 |
 |           |        |      | | NetBSD 2.0.3  |                       |
 |           |        |      | |  |            |                       |
 *--FreeBSD  |        |      | |  v        OpenBSD 3.8                 |
 |    6.0    |        |      | |               |                       |
 |     |     |        |      |  \              |                       |
 |     |     |        |      | NetBSD 2.1      |                       |
 |     |     |        |      |                 |                       |
 |     |     |        |   NetBSD 3.0           |                       |
 |     |     |        |      | |  |            |                DragonFly 1.4.0
 |     |     |        |      | |  |        OpenBSD 3.9                 |
 |  FreeBSD  |        |      | |  |            |                       |
 |    6.1    |        |      | |  |            |                       |
 |     |  FreeBSD 5.5 |      | |  |            |                       |
 |     |              |      | | NetBSD 3.0.1  |                DragonFly 1.6.0
 |     |              |      | |  |            |                       |
 |     |              |      | |  |        OpenBSD 4.0                 |
 |     |              |      | | NetBSD 3.0.2  |                       |
 |     |              |      | NetBSD 3.1      |                       |
 | FreeBSD 6.2        |      |                 |                       |
 |     |              |      |                 |                DragonFly 1.8.0
 |     |              |      |             OpenBSD 4.1                 |
 |     |              |      |                 |                DragonFly 1.10.0
 |     |           Mac OS X  |                 |                       |
 |     |             10.5    |                 |                       |
 |     |              |      |             OpenBSD 4.2                 |
 |     |              |   NetBSD 4.0           |                       |
 | FreeBSD 6.3        |      |                 |                       |
 |            \       |      |                 |                       |
 *--FreeBSD    |      |      |                 |                DragonFly 1.12.0
 |    7.0      |      |      |                 |                       |
 |     |       |      |      |             OpenBSD 4.3                 |
 |     |       |      |      |                 |                DragonFly 2.0.0
 |     |    FreeBSD   |      |             OpenBSD 4.4                 |
 |     |      6.4     |      |                 |                       |
 |     |              |      |                 |                       |
 |  FreeBSD 7.1       |      |                 |                       |
 |     |              |      |                 |                DragonFly 2.2.0
 |  FreeBSD 7.2       |   NetBSD 5.0       OpenBSD 4.5                 |
 |             \      |      |    |            |                       |
 |              |  Mac OS X  |    |            |                       |
 |              |    10.6    |    |            |                       |
 |              |     |      |    |            |                DragonFly 2.4.0
 |              |     |      |    |        OpenBSD 4.6                 |
 |              |     |      |    |            |                       |
 *--FreeBSD     |     |      |    |            |                       |
 |    8.0       |     |      |    |            |                       |
 |     |     FreeBSD  |      |    |            |                       |
 |     |       7.3    |      |    |            |                DragonFly 2.6.0
 |     |        |     |      |    |        OpenBSD 4.7                 |
 |  FreeBSD     |     |      |    |            |                       |
 |    8.1       |     |      |    |            |                       |
 |     |        |     |      |    |            |                DragonFly 2.8.2
 |     |        |     |      |    |        OpenBSD 4.8                 |
 |     |        |     |      | NetBSD 5.1      |                       |
 |  FreeBSD  FreeBSD  |      |                 |                       |
 |    8.2      7.4    |      |                 |               DragonFly 2.10.1
 |     v              |      |             OpenBSD 4.9                 |
 |                    |      |                 |                       |
 |                    |      |                 |                       |
 |                    |      |             OpenBSD 5.0                 |
 |                    |      |                 |                       |
FreeBSD 9 -current    |  NetBSD -current  OpenBSD -current             |
 |                    |      |                 |                       |
 v                    v      v                 v                       v

Time
----------------

Time tolerance +/- 6 months, depending on which book/article you read; if it
was the announcement in Usenet or if it was available as tape.

[44B] McKusick, Marshall Kirk, Keith Bostic, Michael J Karels,
	and John Quarterman. The Design and Implementation of
	the 4.4BSD Operating System.
[APL] Apple website [http://www.apple.com/macosx/]
[BSDI] Berkeley Software Design, Inc.
[DFB] DragonFlyBSD Project, The.
[DOC] README, COPYRIGHT on tape.
[FBD] FreeBSD Project, The.
[KB]  Keith Bostic. BSD2.10 available from Usenix. comp.unix.sources,
	Volume 11, Info 4, April, 1987.
[KKK] Mike Karels, Kirk McKusick, and Keith Bostic. tahoe announcement.
	comp.bugs.4bsd.ucb-fixes, June 15, 1988.
[KSJ] Michael J. Karels, Carl F. Smith, and William F. Jolitz.
	Changes in the Kernel in 2.9BSD. Second Berkeley Software
	Distribution UNIX Version 2.9, July, 1983.
[NBD] NetBSD Project, The.
[OBD] OpenBSD Project, The.
[QCU] Salus, Peter H. A quarter century of UNIX.
[SMS] Steven M. Schultz. 2.11BSD, UNIX for the PDP-11.
[TUHS] The Unix Historical Society.  http://minnie.tuhs.org/Unix_History/.
[USE] Usenet announcement.
[WRS] Wind River Systems, Inc.
[dmr] Dennis Ritchie, via E-Mail

Multics                 1965
UNIX                    Summer 1969
				DEC PDP-7
First   Edition         1971-11-03 [QCU]
				DEC PDP-11/20, Assembler
Second  Edition         1972-06-12 [QCU]
				10 UNIX installations
Third   Edition         1973-02-xx [QCU]
				Pipes, 16 installations
Fourth  Edition         1973-11-xx [QCU]
				rewriting in C effected,
                                above 30 installations
Fifth   Edition         1974-06-xx [QCU]
				above 50 installations
Sixth   Edition         1975-05-xx [QCU]
				port to DEC Vax
Seventh Edition         1979-01-xx [QCU]
				first portable UNIX
Eighth  Edition         1985-02-xx [QCU]
				VAX 11/750, VAX 11/780 [dmr]
				descended from 4.1c BSD [dmr]
				descended from 4.1 BSD [44B]
			scooping-out and replacement of the character-device
			and networking part by the streams mechanism

Ninth   Edition         1986-09-xx [QCU]
Tenth   Edition         1989-10-xx [QCU]

1BSD                    late 1977
			1978-03-09 [QCU]
				PDP-11, Pascal, ex(1)
				30 free copies of 1BSD sent out
				35 tapes sold for 50 USD [QCU]
2BSD                    mid 1978 [QCU] 1979-05-10 [TUHS]
				75 2BSD tapes shipped
2.79BSD			1980-04-xx [TUHS]
2.8BSD			1981-07-xx [KSJ]

2.8.1BSD		1982-01-xx [QCU]
				set of performance improvements
2.9BSD			1983-07-xx [KSJ]
2.9.1BSD                1983-11-xx [TUHS]
2.9BSD-Seismo		1985-08-xx [SMS]
2.10BSD			1987-04-xx [KKK]
2.10.1BSD		1989-01-xx [SMS]
2.11BSD			1992-02-xx [SMS]
2.11BSD rev #430	1999-12-13 [SMS]

32V			1978-1[01]-xx [QCU]
3BSD                    late 1979 [QCU] March 1980 [TUHS]
				virtual memory, page replacement,
                        	demand paging
4.0BSD                  1980-10-xx
4.1BSD                  1981-07-08 [DOC]
4.1aBSD                 1982-04-xx
				alpha release, 100 sites, networking [44B]
4.1bBSD				internal release, fast filesystem [44B]
4.1cBSD                 late 1982
				beta release, IPC [44B]
4.2BSD                  1983-09-xx [QCU]
                        1983-08-03 [DOC]
4.3BSD                  1986-06-xx [QCU]
			1986-04-05 [KB], [DOC]
4.3BSD Tahoe            1988-06-15 [QCU], [DOC]
4.3BSD NET/1            1988-11-xx [QCU]
                        1989-01-01 [DOC]
4.3BSD Reno             1990-06-29 [QCU], [DOC]
4.3BSD NET/2            1991-06-28 [QCU], [DOC]

BSD/386 ALPHA		1991-12-xx [BSDI]
				first code released to people outside BSDI
386BSD 0.0              1992-02-xx [DOC]
BSD/386 0.3.1	        1992-04-xx [BSDI] first ext. beta; B customers
BSD/386 0.3.3		1992-06-xx [BSDI] first CDROM version
386BSD 0.1              1992-07-28 [DOC]
4.4BSD Alpha            1992-07-07
BSD/386 0.9.3		1992-10-xx [BSDI]
				first external gamma; G customers
BSD/386 0.9.4		1992-12-xx [BSDI]
				would have been 1.0 except for request
				for preliminary injunction
BSD/386 1.0 		1993-03-xx [BSDI]
				injunction denied; first official release
NetBSD 0.8              1993-04-20 [NBD]
4.4BSD                  1993-06-01 [USE]
NetBSD 0.9              1993-08-23 [NBD]
FreeBSD 1.0		1993-11-01 [FBD]
FreeBSD 1.0.2		1993-11-14 [FBD]
				supersedes 1.0 13 days after release.
BSD/386 1.1		1994-02-xx [BSDI]
4.4BSD Lite             1994-03-01 [USE]
FreeBSD 1.1		1994-05-07 [FBD]
FreeBSD 1.1.5		1994-06-30 [FBD]
FreeBSD 1.1.5.1		1994-07-05 [FBD]
				supersedes 1.1.5 5 days after release.
NetBSD 1.0              1994-10-26 [NBD]
386BSD 1.0              1994-11-12 [USE]
FreeBSD 2.0		1994-11-23 [FBD]
BSD/OS 2.0		1995-01-xx [BSDI] 4.4 lite based
FreeBSD 2.0.5		1995-06-10 [FBD]
BSD/OS 2.0.1		1995-06-xx [BSDI]
4.4BSD Lite Release 2	1995-06-xx [44B]
				the true final distribution from the CSRG
FreeBSD 2.1.0		1995-11-19 [FBD]
NetBSD 1.1              1995-11-26 [NBD]
BSD/OS 2.1		1996-01-xx [BSDI]
FreeBSD 2.1.5		1996-07-14 [FBD]
NetBSD 1.2              1996-10-04 [NBD]
OpenBSD 2.0             1996-10-18 [OBD]
FreeBSD 2.1.6		1996-11-16 [FBD]
FreeBSD 2.1.6.1		1996-11-25 [FBD] (sendmail security release)
Rhapsody		1997-xx-xx
FreeBSD 2.1.7		1997-02-20 [FBD]
BSD/OS 3.0		1997-02-xx [BSDI] 4.4 lite2 based
FreeBSD 2.2.0		1997-03-16 [FBD]
FreeBSD 2.2.1		1997-03-25 [FBD]
FreeBSD 2.2.2		1997-05-16 [FBD]
NetBSD 1.2.1            1997-05-20 [NBD] (patch release)
OpenBSD 2.1             1997-06-01 [OBD]
FreeBSD 2.2.5		1997-10-22 [FBD]
OpenBSD 2.2             1997-12-01 [OBD]
NetBSD 1.3              1998-01-04 [NBD]
FreeBSD 2.2.6		1998-03-25 [FBD]
NetBSD 1.3.1            1998-03-09 [NBD] (patch release)
BSD/OS 3.1		1998-03-xx [BSDI]
OpenBSD 2.3             1998-05-19 [OBD]
NetBSD 1.3.2            1998-05-29 [NBD] (patch release)
FreeBSD 2.2.7		1998-07-22 [FBD]
BSD/OS 4.0		1998-08-xx [BSDI]
				2-lock MP support, ELF executables
FreeBSD 3.0		1998-10-16 [FBD]
				FreeBSD-3.0 is a snapshot from -current,
				while 3.1 and 3.2 are from 3.x-stable which
				was branched quite some time after 3.0-release
FreeBSD 2.2.8           1998-11-29 [FBD]
OpenBSD 2.4             1998-12-01 [OBD]
NetBSD 1.3.3            1998-12-23 [NBD] (patch release)
FreeBSD 3.1		1999-02-15 [FBD]
BSD/OS 4.0.1		1999-03-xx [BSDI]
NetBSD 1.4              1999-05-12 [NBD]
FreeBSD 3.2             1999-05-17 [FBD]
OpenBSD 2.5             1999-05-19 [OBD]
NetBSD 1.4.1            1999-08-26 [NBD] (patch release)
FreeBSD 3.3             1999-09-17 [FBD]
OpenBSD 2.6             1999-12-01 [OBD]
FreeBSD 3.4             1999-12-20 [FBD]
BSD/OS 4.1		1999-12-xx [BSDI]
FreeBSD 4.0             2000-03-13 [FBD]
NetBSD 1.4.2            2000-03-19 [NBD] (patch release)
OpenBSD 2.7             2000-06-15 [OBD]
FreeBSD 3.5		2000-06-24 [FBD]
FreeBSD 4.1		2000-07-27 [FBD]
FreeBSD 3.5.1		2000-07-28 [FBD]
FreeBSD 4.1.1		2000-09-25 [FBD] (a network-only patch release)
FreeBSD 4.2  		2000-11-21 [FBD]
NetBSD 1.4.3		2000-11-25 [NBD] (patch release)
BSD/OS 4.2		2000-11-29 [BSDI]
OpenBSD 2.8		2000-12-01 [OBD]
NetBSD 1.5              2000-12-06 [NBD]
Mac OS X 10.0           2001-03-24 [APL]
FreeBSD 4.3  		2001-04-20 [FBD]
OpenBSD 2.9  		2001-06-01 [OBD]
NetBSD 1.5.1		2001-07-11 [NBD] (patch release)
NetBSD 1.5.2		2001-09-13 [NBD] (patch release)
FreeBSD 4.4  		2001-09-18 [FBD]
Mac OS X 10.1		2001-09-29 [APL]
OpenBSD 3.0		2001-12-01 [OBD]
FreeBSD 4.5  		2002-01-29 [FBD]
BSD/OS 4.3		2002-03-14 [WRS]
OpenBSD 3.1		2002-05-19 [OBD]
FreeBSD 4.6  		2002-06-15 [FBD]
NetBSD 1.5.3		2002-07-22 [NBD] (patch release)
FreeBSD 4.6.2		2002-08-15 [FBD] (patch release)
Mac OS X 10.2		2002-08-23 [APL]
NetBSD 1.6		2002-09-14 [NBD]
FreeBSD 4.7		2002-10-08 [FBD]
OpenBSD 3.2		2002-11-01 [OBD]
FreeBSD 5.0		2003-01-17 [FBD]
				FreeBSD 5.0 is a separate branch off of
				-current, similar to 3.0.
FreeBSD 4.8		2003-04-03 [FBD]
NetBSD 1.6.1		2003-04-21 [NBD] (patch release)
OpenBSD 3.3		2003-05-01 [OBD]
BSD/OS 5.0		2003-05-?? [WRS]
FreeBSD 5.1		2003-06-09 [FBD]
Mac OS X 10.3		2003-10-24 [APL]
FreeBSD 4.9		2003-10-28 [FBD]
BSD/OS 5.1 ISE		2003-10-?? [WRS] (final version)
OpenBSD 3.4		2003-11-01 [OBD]
FreeBSD 5.2		2004-01-12 [FBD]
FreeBSD 5.2.1		2004-02-22 [FBD] (patch release)
NetBSD 1.6.2		2004-03-01 [NBD] (patch release)
OpenBSD 3.5		2004-04-01 [OBD]
FreeBSD 4.10		2004-05-27 [FBD]
DragonFly 1.0		2004-07-12 [DFB]
OpenBSD 3.6		2004-10-29 [OBD]
FreeBSD 5.3		2004-11-06 [FBD]
NetBSD 2.0		2004-12-09 [NBD]
FreeBSD 4.11		2005-01-25 [FBD]
DragonFly 1.2.0		2005-04-08 [DFB]
NetBSD 2.0.2		2005-04-14 [NBD] (security/critical release)
Mac OS X 10.4		2005-04-29 [APL]
FreeBSD 5.4		2005-05-09 [FBD]
OpenBSD 3.7		2005-05-19 [OBD]
NetBSD 2.0.3		2005-10-31 [NBD] (security/critical release)
OpenBSD 3.8		2005-11-01 [OBD]
FreeBSD 6.0		2005-11-01 [FBD]
NetBSD 2.1		2005-11-02 [NBD]
NetBSD 3.0		2005-12-23 [NBD]
DragonFly 1.4.0		2006-01-08 [DFB]
OpenBSD 3.9		2006-05-01 [OBD]
FreeBSD 6.1		2006-05-08 [FBD]
FreeBSD 5.5		2006-05-25 [FBD]
NetBSD 3.0.1		2006-07-24 [NBD] (security/critical release)
DragonFly 1.6.0		2006-07-24 [DFB]
OpenBSD 4.0		2006-11-01 [OBD]
NetBSD 3.0.2		2006-11-04 [NBD] (security/critical release)
NetBSD 3.1		2006-11-04 [NBD]
FreeBSD 6.2		2007-01-15 [FBD]
DragonFly 1.8.0		2007-01-30 [DFB]
OpenBSD 4.1		2007-05-01 [OBD]
DragonFly 1.10.0	2007-08-06 [DFB]
Mac OS X 10.5		2007-10-26 [APL]
OpenBSD 4.2		2007-11-01 [OBD]
NetBSD 4.0		2007-12-19 [NBD]
FreeBSD 6.3		2008-01-18 [FBD]
DragonFly 1.12.0	2008-02-26 [DFB]
FreeBSD 7.0		2008-02-27 [FBD]
OpenBSD 4.3		2008-05-01 [OBD]
DragonFly 2.0.0		2008-07-21 [DFB]
OpenBSD 4.4		2008-11-01 [OBD]
FreeBSD 6.4		2008-11-28 [FBD]
FreeBSD 7.1		2009-01-04 [FBD]
DragonFly 2.2.0		2009-02-17 [DFB]
NetBSD 5.0		2009-04-29 [NBD]
OpenBSD 4.5		2009-05-01 [OBD]
FreeBSD 7.2		2009-05-04 [FBD]
Mac OS X 10.6		2009-06-08 [APL]
DragonFly 2.4.0		2009-09-16 [DFB]
OpenBSD 4.6		2009-10-18 [OBD]
FreeBSD 8.0		2009-11-26 [FBD]
FreeBSD 7.3		2010-03-23 [FBD]
DragonFly 2.6.0		2010-03-28 [DFB]
OpenBSD 4.7		2010-05-19 [OBD]
FreeBSD 8.1		2010-07-24 [FBD]
DragonFly 2.8.2		2010-10-30 [DFB]
OpenBSD 4.8		2010-11-01 [OBD]
NetBSD 5.1		2010-11-19 [NBD]
FreeBSD 7.4		2011-02-24 [FBD]
FreeBSD 8.2		2011-02-24 [FBD]
DragonFly 2.10.1	2011-04-26 [DFB]
OpenBSD 4.9		2011-05-01 [OBD]
OpenBSD 5.0		2011-11-01 [OBD]

Bibliography
------------------------

Leffler, Samuel J., Marshall Kirk McKusick, Michael J Karels and John
Quarterman. The Design and Implementation of the 4.3BSD UNIX Operating
System. Reading, Mass. Addison-Wesley, 1989. ISBN 0-201-06196-1

Salus, Peter H. A quarter century of UNIX. Addison-Wesley Publishing
Company, Inc., 1994. ISBN 0-201-54777-5

McKusick, Marshall Kirk, Keith Bostic, Michael J Karels, and John
Quarterman. The Design and Implementation of the 4.4BSD Operating
System. Reading, Mass. Addison-Wesley, 1996. ISBN 0-201-54979-4

McKusick, Marshall Kirk, George Neville-Neil. The Design and
Implementation of the FreeBSD Operating System.
Addison-Wesley Professional, Published: Aug 2, 2004. ISBN 0-201-70245-2

Doug McIlroy. Research Unix Reader.

Michael G. Brown. The Role of BSD in the Development of Unix.
Presented to the Tasmanian Unix Special Interest Group of the
Australian Computer Society, Hobart, August 1993.

Peter H. Salus. Unix at 25. Byte Magazine, October 1994.
URL: http://www.byte.com/art/9410/sec8/art3.htm

Andreas Klemm, Lars Köller. If you're going to San Francisco ...
Die freien BSD-Varianten von Unix. c't April 1997, page 368ff.

BSD Release Announcements collection.
URL: http://www.FreeBSD.org/releases/

BSD Hypertext Man Pages
URL: http://www.FreeBSD.org/cgi/man.cgi

UNIX history graphing project
URL: http://minnie.tuhs.org/Unix_History/index.html

UNIX history
URL: http://www.levenez.com/unix/

James Howard: The BSD Family Tree
URL: http://ezine.daemonnews.org/200104/bsd_family.html
("what are the differences between FreeBSD, NetBSD, and OpenBSD?")


Acknowledgments
---------------

Josh Gilliam for suggestions, bug fixes, and finding very old
original BSD announcements from Usenet or tapes.

Steven M. Schultz for providing 2.8BSD, 2.10BSD, 2.11BSD manual pages.

--
Copyright (c) 1997-2007 Wolfram Schneider <wosch@FreeBSD.ORG>
URL: http://cvsweb.freebsd.org/src/share/misc/bsd-family-tree

$FreeBSD: src/share/misc/bsd-family-tree,v 1.148 2011/11/02 14:28:36 maxim Exp $
Commit	Line	Data
984263bc MD	1	The UNIX system family tree: Research and BSD
	2	---------------------------------------------
	3
	4	First Edition (V1)
	5	\|
	6	Second Edition (V2)
	7	\|
	8	Third Edition (V3)
	9	\|
	10	Fourth Edition (V4)
	11	\|
	12	Fifth Edition (V5)
	13	\|
	14	Sixth Edition (V6) -----*
	15	\ \|
	16	\ \|
	17	\ \|
	18	Seventh Edition (V7) \|
	19	\ \|
	20	\ 1BSD
	21	32V \|
	22	\ 2BSD---------------*
	23	\ / \|
	24	\ / \|
	25	\/ \|
	26	3BSD \|
	27	\| \|
916f54c7	28	4.0BSD 2.79BSD
984263bc MD	29	\| \|
	30	4.1BSD --------------> 2.8BSD
	31	\| \|
	32	4.1aBSD -----------\ \|
	33	\| \ \|
	34	4.1bBSD \ \|
	35	\| \ \|
	36	*------ 4.1cBSD --------------> 2.9BSD
	37	/ \| \|
	38	Eighth Edition \| 2.9BSD-Seismo
	39	\| \| \|
	40	+----<--- 4.2BSD 2.9.1BSD
	41	\| \| \|
	42	+----<--- 4.3BSD -------------> 2.10BSD
	43	\| \| / \|
	44	Ninth Edition \| / 2.10.1BSD
	45	\| 4.3BSD Tahoe-----+ \|
	46	\| \| \ \|
	47	\| \| \ \|
	48	v \| 2.11BSD
	49	Tenth Edition \| \|
	50	\| 2.11BSD rev #430
	51	4.3BSD NET/1 \|
	52	\| v
	53	4.3BSD Reno
	54	\|
	55	---------- 4.3BSD NET/2 -------------------+-------------
	56	\| \| \| \|
	57	386BSD 0.0 \| \| BSD/386 ALPHA
	58	\| \| \| \|
	59	386BSD 0.1 ------------>+ \| BSD/386 0.3.[13]
	60	\| \ \| 4.4BSD Alpha \|
	61	\| 386BSD 1.0 \| \| BSD/386 0.9.[34]
	62	\| \| 4.4BSD \|
	63	\| \| / \| \|
	64	\| \| 4.4BSD-Encumbered \| \|
	65	\| NetBSD 0.8 \| BSD/386 1.0
	66	\| \| \| \|
	67	FreeBSD 1.0 NetBSD 0.9 \| BSD/386 1.1
	68	\| \| .----- 4.4BSD Lite \|
	69	FreeBSD 1.1 \| / / \| \ \|
	70	\| \| / / \| \ \|
	71	FreeBSD 1.1.5 .---\|--------' / \| \ \|
	72	\| / \| / \| \ \|
	73	FreeBSD 1.1.5.1 / \| / \| \ \|
	74	\| / NetBSD 1.0 <-' \| \ \|
	75	\| / \| \| \ \|
	76	FreeBSD 2.0 <--' \| \| BSD/OS 2.0
	77	\| \ \| \|
	78	FreeBSD 2.0.5 \ \| BSD/OS 2.0.1
	79	\| .-----\------------- 4.4BSD Lite2 \|
	80	\| \| \ \| \| \| \| \|
	81	\| \| .-----\|------Rhapsody \| \| \| \|
	82	\| \| \| \| NetBSD 1.3 \| \| \|
	83	\| \| \| \| OpenBSD 2.3 \| \|
	84	\| \| \| \| BSD/OS 3.0 \|
	85	FreeBSD 2.1 \| \| \| \|
	86	\| \| \| \| NetBSD 1.1 ------. BSD/OS 2.1
	87	\| FreeBSD 2.1.5 \| \| \| \ \|
	88	\| \| \| \| NetBSD 1.2 \ BSD/OS 3.0
	89	\| FreeBSD 2.1.6 \| \| \| \ OpenBSD 2.0 \|
	90	\| \| \| \| \| \ \| \|
	91	\| FreeBSD 2.1.6.1 \| \| \| \ \| \|
	92	\| \| \| \| \| \ \| \|
93	\| FreeBSD 2.1.7 \| \| \| \| \| \|
94	\| \| \| \| \| NetBSD 1.2.1 \| \|
95	\| FreeBSD 2.1.7.1 \| \| \| \| \|
96	\| \| \| \| \| \|
97	\| \| \| \| \| \|
98	*-FreeBSD 2.2 \| \| \| \| \|
99	\| \ \| \| \| \| \|
100	\| FreeBSD 2.2.1 \| \| \| \| \|
101	\| \| \| \| \| \| \|
102	\| FreeBSD 2.2.2 \| \| \| OpenBSD 2.1 \|
103	\| \| \| \| \| \| \|
104	\| FreeBSD 2.2.5 \| \| \| \| \|
105	\| \| \| \| \| OpenBSD 2.2 \|
106	\| \| \| \| NetBSD 1.3 \| \|
107	\| FreeBSD 2.2.6 \| \| \| \| \| \|
108	\| \| \| \| \| NetBSD 1.3.1 \| BSD/OS 3.1
109	\| \| \| \| \| \| OpenBSD 2.3 \|
110	\| \| \| \| \| NetBSD 1.3.2 \| \|
111	\| FreeBSD 2.2.7 \| \| \| \| \| \|
112	\| \| \| \| \| \| \| BSD/OS 4.0
113	\| v \| \| \| \| \| \|
114	\| FreeBSD 2.2.8 \| \| \| \| \| \|
115	\| \| \| \| \| OpenBSD 2.4 \|
116	FreeBSD 3.0 <--------* \| \| v \| \|
117	\| \| \| NetBSD 1.3.3 \| \|
118	*---FreeBSD 3.1 \| \| \| \|
119	\| \| \| \| \| BSD/OS 4.0.1
120	\| FreeBSD 3.2----* \| NetBSD 1.4 OpenBSD 2.5 \|
121	\| \| \| \| \| \| \| \| \|
122	\| \| \| \| \| \| \| \| \|
123	\| \| \| \| \| \| \| \| \|
124	\| FreeBSD 3.3 \| \| \| \| NetBSD 1.4.1 \| \|
125	\| \| \| \| \| \| \| OpenBSD 2.6 \|
126	\| FreeBSD 3.4 \| \| \| \| \| \| \|
127	\| \| \| \| \| \| \| \| BSD/OS 4.1
128	FreeBSD 4.0 \| \| \| \| \| NetBSD 1.4.2 \| \|
129	\| \| \| \| \| \| \| \| \|
130	\| \| \| \| \| \| \| \| \|
131	\| FreeBSD 3.5 \| \| \| \| \| OpenBSD 2.7 \|
132	\| \| \| \| \| \| \| \| \|
133	\| FreeBSD 3.5.1 \| \| \| \| \| \| \|
134	\| \| \| \| \| \| \| \|
135	*---FreeBSD 4.1 \| \| \| \| \| \| \|
136	\| \| \| \| (?) \| \| \| \|
137	\| FreeBSD 4.1.1 \| \| / \| \| \| \|
138	\| \| \| \| / \| \| \| \|
139	\| FreeBSD 4.2 Darwin/ \| NetBSD 1.4.3 \| \|
aaec263a SW	140	\| \| Mac OS X \| OpenBSD 2.8 BSD/OS 4.2
aaec263a SW	141	\| \| \| \| \| \|
984263bc MD	142	\| \| \| \| \| \|
	143	\| \| 10.0 NetBSD 1.5 \| \|
	144	\| FreeBSD 4.3 \| \| \| \| \|
	145	\| \| \| \| \| OpenBSD 2.9 \|
	146	\| \| \| \| NetBSD 1.5.1 \| \|
	147	\| \| \| \| \| \| \|
	148	\| FreeBSD 4.4-. \| \| NetBSD 1.5.2 \| \|
	149	\| \| \| Mac OS X \| \| \| \|
	150	\| \| \| 10.1 \| \| OpenBSD 3.0 \|
	151	\| FreeBSD 4.5 \| \| \| \| \| \|
	152	\| \| \ \| \| \| \| BSD/OS 4.3
	153	\| FreeBSD 4.6 \ \| \| \| OpenBSD 3.1 \|
e45c8094	154	\| \| \ \| \| NetBSD 1.5.3 \| \|
aaec263a SW	155	\| FreeBSD 4.6.2 Mac OS X \| \| \|
aaec263a SW	156	\| \| 10.2 \| \| \|
92761d66 SU	157	\| FreeBSD 4.7 \| \| \| \|
	158	\| \| \| NetBSD 1.6 OpenBSD 3.2 \|
	159	\| FreeBSD 4.8 \| \| \| \| \|
	160	\| \| \| \| NetBSD 1.6.1 \| \|
	161	\| \|--------. \| \| \| OpenBSD 3.3 BSD/OS 5.0
	162	\| \| \ \| \| \| \| \|
	163	\| FreeBSD 4.9 \| \| \| \| OpenBSD 3.4 BSD/OS 5.1 ISE
	164	\| \| \| \| \| \| \|
	165	\| \| \| \| \| NetBSD 1.6.2 \|
	166	\| \| \| \| \| \| \|
	167	\| \| \| \| \| \| OpenBSD 3.5
	168	\| \| \| \| \| v \|
	169	\| FreeBSD 4.10 \| \| \| \|
	170	\| \| \| \| \| \|
aaec263a	171	\| FreeBSD 4.11 \| \| \| \|
00ef4ae2 SW	172	\| \| \| \| \|
00ef4ae2 SW	173	\| `-\|------\|-----------------\|---------------------.
92761d66 SU	174	\| \| \| \| \
	175	FreeBSD 5.0 \| \| \| \|
	176	\| \| \| \| \|
3e3f5d86	177	FreeBSD 5.1 \| \| \| DragonFly 1.0
92761d66 SU	178	\| \ \| \| \| \|
	179	\| ----- Mac OS X \| \| \|
	180	\| 10.3 \| \| \|
	181	FreeBSD 5.2 \| \| \| \|
	182	\| \| \| \| \| \|
	183	\| FreeBSD 5.2.1 \| \| \| \|
	184	\| \| \| \| \|
2604593a SW	185	*-------FreeBSD 5.3 \| \| \| \|
	186	\| \| \| \| OpenBSD 3.6 \|
	187	\| \| \| NetBSD 2.0 \| \|
3e3f5d86	188	\| \| \| \| \| \| \| DragonFly 1.2.0
2604593a SW	189	\| \| Mac OS X \| \| NetBSD 2.0.2 \| \|
	190	\| \| 10.4 \| \| \| \| \|
	191	\| FreeBSD 5.4 \| \| \| \| \| \|
	192	\| \| \| \| \| \| OpenBSD 3.7 \|
	193	\| \| \| \| \| NetBSD 2.0.3 \| \|
	194	\| \| \| \| \| \| \| \|
	195	*--FreeBSD \| \| \| \| v OpenBSD 3.8 \|
	196	\| 6.0 \| \| \| \| \| \|
	197	\| \| \| \| \| \ \| \|
	198	\| \| \| \| \| NetBSD 2.1 \| \|
	199	\| \| \| \| \| \| \|
	200	\| \| \| \| NetBSD 3.0 \| \|
3e3f5d86	201	\| \| \| \| \| \| \| \| DragonFly 1.4.0
3c37971c SW	202	\| \| \| \| \| \| \| OpenBSD 3.9 \|
	203	\| FreeBSD \| \| \| \| \| \| \|
	204	\| 6.1 \| \| \| \| \| \| \|
	205	\| \| FreeBSD 5.5 \| \| \| \| \| \|
3e3f5d86	206	\| \| \| \| \| NetBSD 3.0.1 \| DragonFly 1.6.0
3c37971c SW	207	\| \| \| \| \| \| \| \|
	208	\| \| \| \| \| \| OpenBSD 4.0 \|
	209	\| \| \| \| \| NetBSD 3.0.2 \| \|
	210	\| \| \| \| NetBSD 3.1 \| \|
	211	\| FreeBSD 6.2 \| \| \| \|
3e3f5d86 SW	212	\| \| \| \| \| DragonFly 1.8.0
	213	\| \| \| \| OpenBSD 4.1 \|
	214	\| \| \| \| \| DragonFly 1.10.0
00ef4ae2 SW	215	\| \| Mac OS X \| \| \|
00ef4ae2 SW	216	\| \| 10.5 \| \| \|
d6762fb9	217	\| \| \| \| OpenBSD 4.2 \|
951fd62a	218	\| \| \| NetBSD 4.0 \| \|
4a2380be	219	\| FreeBSD 6.3 \| \| \| \|
261c8119 MS	220	\| \ \| \| \| \|
	221	*--FreeBSD \| \| \| \| DragonFly 1.12.0
	222	\| 7.0 \| \| \| \| \|
	223	\| \| \| \| \| OpenBSD 4.3 \|
0f564fbc MS	224	\| \| \| \| \| \| DragonFly 2.0.0
	225	\| \| FreeBSD \| \| OpenBSD 4.4 \|
	226	\| \| 6.4 \| \| \| \|
	227	\| \| \| \| \| \|
	228	\| FreeBSD 7.1 \| \| \| \|
	229	\| \| \| \| \| DragonFly 2.2.0
b97a576c	230	\| FreeBSD 7.2 \| NetBSD 5.0 OpenBSD 4.5 \|
e45c8094	231	\| \ \| \| \| \| \|
18e9d236 SW	232	\| \| Mac OS X \| \| \| \|
18e9d236 SW	233	\| \| 10.6 \| \| \| \|
e45c8094 SW	234	\| \| \| \| \| \| DragonFly 2.4.0
	235	\| \| \| \| \| OpenBSD 4.6 \|
	236	\| \| \| \| \| \| \|
	237	*--FreeBSD \| \| \| \| \| \|
	238	\| 8.0 \| \| \| \| \| \|
18e9d236	239	\| \| FreeBSD \| \| \| \| \|
e45c8094	240	\| \| 7.3 \| \| \| \| DragonFly 2.6.0
18e9d236 SW	241	\| \| \| \| \| \| OpenBSD 4.7 \|
	242	\| FreeBSD \| \| \| \| \| \|
	243	\| 8.1 \| \| \| \| \| \|
	244	\| \| \| \| \| \| \| DragonFly 2.8.2
	245	\| \| \| \| \| \| OpenBSD 4.8 \|
	246	\| \| \| \| \| NetBSD 5.1 \| \|
	247	\| FreeBSD FreeBSD \| \| \| \|
c5ddd1de	248	\| 8.2 7.4 \| \| \| DragonFly 2.10.1
3ed2fff3	249	\| v \| \| OpenBSD 4.9 \|
4a2380be	250	\| \| \| \| \|
ae286b04 SW	251	\| \| \| \| \|
	252	\| \| \| OpenBSD 5.0 \|
	253	\| \| \| \| \|
07596c48	254	FreeBSD 9 -current \| NetBSD -current OpenBSD -current \|
92761d66 SU	255	\| \| \| \| \|
92761d66 SU	256	v v v v v
984263bc MD	257
	258	Time
	259	----------------
	260
	261	Time tolerance +/- 6 months, depending on which book/article you read; if it
	262	was the announcement in Usenet or if it was available as tape.
	263
	264	[44B] McKusick, Marshall Kirk, Keith Bostic, Michael J Karels,
	265	and John Quarterman. The Design and Implementation of
	266	the 4.4BSD Operating System.
	267	[APL] Apple website [http://www.apple.com/macosx/]
	268	[BSDI] Berkeley Software Design, Inc.
aaec263a	269	[DFB] DragonFlyBSD Project, The.
984263bc MD	270	[DOC] README, COPYRIGHT on tape.
	271	[FBD] FreeBSD Project, The.
	272	[KB] Keith Bostic. BSD2.10 available from Usenix. comp.unix.sources,
	273	Volume 11, Info 4, April, 1987.
	274	[KKK] Mike Karels, Kirk McKusick, and Keith Bostic. tahoe announcement.
	275	comp.bugs.4bsd.ucb-fixes, June 15, 1988.
	276	[KSJ] Michael J. Karels, Carl F. Smith, and William F. Jolitz.
	277	Changes in the Kernel in 2.9BSD. Second Berkeley Software
	278	Distribution UNIX Version 2.9, July, 1983.
	279	[NBD] NetBSD Project, The.
	280	[OBD] OpenBSD Project, The.
	281	[QCU] Salus, Peter H. A quarter century of UNIX.
	282	[SMS] Steven M. Schultz. 2.11BSD, UNIX for the PDP-11.
916f54c7	283	[TUHS] The Unix Historical Society. http://minnie.tuhs.org/Unix_History/.
984263bc MD	284	[USE] Usenet announcement.
	285	[WRS] Wind River Systems, Inc.
	286	[dmr] Dennis Ritchie, via E-Mail
	287
	288	Multics 1965
	289	UNIX Summer 1969
	290	DEC PDP-7
	291	First Edition 1971-11-03 [QCU]
	292	DEC PDP-11/20, Assembler
	293	Second Edition 1972-06-12 [QCU]
	294	10 UNIX installations
	295	Third Edition 1973-02-xx [QCU]
	296	Pipes, 16 installations
	297	Fourth Edition 1973-11-xx [QCU]
	298	rewriting in C effected,
	299	above 30 installations
	300	Fifth Edition 1974-06-xx [QCU]
	301	above 50 installations
	302	Sixth Edition 1975-05-xx [QCU]
	303	port to DEC Vax
	304	Seventh Edition 1979-01-xx [QCU]
	305	first portable UNIX
	306	Eighth Edition 1985-02-xx [QCU]
	307	VAX 11/750, VAX 11/780 [dmr]
	308	descended from 4.1c BSD [dmr]
	309	descended from 4.1 BSD [44B]
	310	scooping-out and replacement of the character-device
	311	and networking part by the streams mechanism
	312
	313	Ninth Edition 1986-09-xx [QCU]
	314	Tenth Edition 1989-10-xx [QCU]
	315
	316	1BSD late 1977
	317	1978-03-09 [QCU]
	318	PDP-11, Pascal, ex(1)
	319	30 free copies of 1BSD sent out
	320	35 tapes sold for 50 USD [QCU]
916f54c7	321	2BSD mid 1978 [QCU] 1979-05-10 [TUHS]
984263bc	322	75 2BSD tapes shipped
916f54c7	323	2.79BSD 1980-04-xx [TUHS]
984263bc MD	324	2.8BSD 1981-07-xx [KSJ]
	325
	326	2.8.1BSD 1982-01-xx [QCU]
	327	set of performance improvements
	328	2.9BSD 1983-07-xx [KSJ]
916f54c7	329	2.9.1BSD 1983-11-xx [TUHS]
984263bc MD	330	2.9BSD-Seismo 1985-08-xx [SMS]
	331	2.10BSD 1987-04-xx [KKK]
	332	2.10.1BSD 1989-01-xx [SMS]
	333	2.11BSD 1992-02-xx [SMS]
	334	2.11BSD rev #430 1999-12-13 [SMS]
	335
	336	32V 1978-1[01]-xx [QCU]
916f54c7	337	3BSD late 1979 [QCU] March 1980 [TUHS]
984263bc MD	338	virtual memory, page replacement,
	339	demand paging
	340	4.0BSD 1980-10-xx
	341	4.1BSD 1981-07-08 [DOC]
	342	4.1aBSD 1982-04-xx
	343	alpha release, 100 sites, networking [44B]
	344	4.1bBSD internal release, fast filesystem [44B]
	345	4.1cBSD late 1982
	346	beta release, IPC [44B]
	347	4.2BSD 1983-09-xx [QCU]
	348	1983-08-03 [DOC]
	349	4.3BSD 1986-06-xx [QCU]
	350	1986-04-05 [KB], [DOC]
	351	4.3BSD Tahoe 1988-06-15 [QCU], [DOC]
	352	4.3BSD NET/1 1988-11-xx [QCU]
	353	1989-01-01 [DOC]
	354	4.3BSD Reno 1990-06-29 [QCU], [DOC]
	355	4.3BSD NET/2 1991-06-28 [QCU], [DOC]
	356
	357	BSD/386 ALPHA 1991-12-xx [BSDI]
	358	first code released to people outside BSDI
	359	386BSD 0.0 1992-02-xx [DOC]
	360	BSD/386 0.3.1 1992-04-xx [BSDI] first ext. beta; B customers
	361	BSD/386 0.3.3 1992-06-xx [BSDI] first CDROM version
	362	386BSD 0.1 1992-07-28 [DOC]
	363	4.4BSD Alpha 1992-07-07
	364	BSD/386 0.9.3 1992-10-xx [BSDI]
	365	first external gamma; G customers
	366	BSD/386 0.9.4 1992-12-xx [BSDI]
	367	would have been 1.0 except for request
	368	for preliminary injunction
	369	BSD/386 1.0 1993-03-xx [BSDI]
	370	injunction denied; first official release
	371	NetBSD 0.8 1993-04-20 [NBD]
	372	4.4BSD 1993-06-01 [USE]
	373	NetBSD 0.9 1993-08-23 [NBD]
	374	FreeBSD 1.0 1993-11-01 [FBD]
3e3f5d86 SW	375	FreeBSD 1.0.2 1993-11-14 [FBD]
3e3f5d86 SW	376	supersedes 1.0 13 days after release.
984263bc MD	377	BSD/386 1.1 1994-02-xx [BSDI]
984263bc MD	378	4.4BSD Lite 1994-03-01 [USE]
aaec263a SW	379	FreeBSD 1.1 1994-05-07 [FBD]
	380	FreeBSD 1.1.5 1994-06-30 [FBD]
	381	FreeBSD 1.1.5.1 1994-07-05 [FBD]
	382	supersedes 1.1.5 5 days after release.
984263bc MD	383	NetBSD 1.0 1994-10-26 [NBD]
984263bc MD	384	386BSD 1.0 1994-11-12 [USE]
aaec263a	385	FreeBSD 2.0 1994-11-23 [FBD]
984263bc MD	386	BSD/OS 2.0 1995-01-xx [BSDI] 4.4 lite based
	387	FreeBSD 2.0.5 1995-06-10 [FBD]
	388	BSD/OS 2.0.1 1995-06-xx [BSDI]
	389	4.4BSD Lite Release 2 1995-06-xx [44B]
	390	the true final distribution from the CSRG
	391	FreeBSD 2.1.0 1995-11-19 [FBD]
	392	NetBSD 1.1 1995-11-26 [NBD]
	393	BSD/OS 2.1 1996-01-xx [BSDI]
	394	FreeBSD 2.1.5 1996-07-14 [FBD]
	395	NetBSD 1.2 1996-10-04 [NBD]
	396	OpenBSD 2.0 1996-10-18 [OBD]
	397	FreeBSD 2.1.6 1996-11-16 [FBD]
	398	FreeBSD 2.1.6.1 1996-11-25 [FBD] (sendmail security release)
	399	Rhapsody 1997-xx-xx
	400	FreeBSD 2.1.7 1997-02-20 [FBD]
	401	BSD/OS 3.0 1997-02-xx [BSDI] 4.4 lite2 based
	402	FreeBSD 2.2.0 1997-03-16 [FBD]
	403	FreeBSD 2.2.1 1997-03-25 [FBD]
	404	FreeBSD 2.2.2 1997-05-16 [FBD]
	405	NetBSD 1.2.1 1997-05-20 [NBD] (patch release)
	406	OpenBSD 2.1 1997-06-01 [OBD]
	407	FreeBSD 2.2.5 1997-10-22 [FBD]
	408	OpenBSD 2.2 1997-12-01 [OBD]
	409	NetBSD 1.3 1998-01-04 [NBD]
	410	FreeBSD 2.2.6 1998-03-25 [FBD]
	411	NetBSD 1.3.1 1998-03-09 [NBD] (patch release)
	412	BSD/OS 3.1 1998-03-xx [BSDI]
	413	OpenBSD 2.3 1998-05-19 [OBD]
	414	NetBSD 1.3.2 1998-05-29 [NBD] (patch release)
	415	FreeBSD 2.2.7 1998-07-22 [FBD]
	416	BSD/OS 4.0 1998-08-xx [BSDI]
	417	2-lock MP support, ELF executables
	418	FreeBSD 3.0 1998-10-16 [FBD]
	419	FreeBSD-3.0 is a snapshot from -current,
	420	while 3.1 and 3.2 are from 3.x-stable which
	421	was branched quite some time after 3.0-release
	422	FreeBSD 2.2.8 1998-11-29 [FBD]
	423	OpenBSD 2.4 1998-12-01 [OBD]
	424	NetBSD 1.3.3 1998-12-23 [NBD] (patch release)
	425	FreeBSD 3.1 1999-02-15 [FBD]
	426	BSD/OS 4.0.1 1999-03-xx [BSDI]
	427	NetBSD 1.4 1999-05-12 [NBD]
	428	FreeBSD 3.2 1999-05-17 [FBD]
	429	OpenBSD 2.5 1999-05-19 [OBD]
	430	NetBSD 1.4.1 1999-08-26 [NBD] (patch release)
	431	FreeBSD 3.3 1999-09-17 [FBD]
	432	OpenBSD 2.6 1999-12-01 [OBD]
	433	FreeBSD 3.4 1999-12-20 [FBD]
	434	BSD/OS 4.1 1999-12-xx [BSDI]
	435	FreeBSD 4.0 2000-03-13 [FBD]
	436	NetBSD 1.4.2 2000-03-19 [NBD] (patch release)
	437	OpenBSD 2.7 2000-06-15 [OBD]
	438	FreeBSD 3.5 2000-06-24 [FBD]
	439	FreeBSD 4.1 2000-07-27 [FBD]
	440	FreeBSD 3.5.1 2000-07-28 [FBD]
	441	FreeBSD 4.1.1 2000-09-25 [FBD] (a network-only patch release)
	442	FreeBSD 4.2 2000-11-21 [FBD]
	443	NetBSD 1.4.3 2000-11-25 [NBD] (patch release)
	444	BSD/OS 4.2 2000-11-29 [BSDI]
	445	OpenBSD 2.8 2000-12-01 [OBD]
	446	NetBSD 1.5 2000-12-06 [NBD]
	447	Mac OS X 10.0 2001-03-24 [APL]
	448	FreeBSD 4.3 2001-04-20 [FBD]
	449	OpenBSD 2.9 2001-06-01 [OBD]
450	NetBSD 1.5.1 2001-07-11 [NBD] (patch release)
451	NetBSD 1.5.2 2001-09-13 [NBD] (patch release)
452	FreeBSD 4.4 2001-09-18 [FBD]
453	Mac OS X 10.1 2001-09-29 [APL]
454	OpenBSD 3.0 2001-12-01 [OBD]
455	FreeBSD 4.5 2002-01-29 [FBD]
456	BSD/OS 4.3 2002-03-14 [WRS]
457	OpenBSD 3.1 2002-05-19 [OBD]
458	FreeBSD 4.6 2002-06-15 [FBD]
459	NetBSD 1.5.3 2002-07-22 [NBD] (patch release)
460	FreeBSD 4.6.2 2002-08-15 [FBD] (patch release)
461	Mac OS X 10.2 2002-08-23 [APL]
462	NetBSD 1.6 2002-09-14 [NBD]
463	FreeBSD 4.7 2002-10-08 [FBD]
464	OpenBSD 3.2 2002-11-01 [OBD]
465	FreeBSD 5.0 2003-01-17 [FBD]
466	FreeBSD 5.0 is a separate branch off of
467	-current, similar to 3.0.
468	FreeBSD 4.8 2003-04-03 [FBD]
92761d66 SU	469	NetBSD 1.6.1 2003-04-21 [NBD] (patch release)
	470	OpenBSD 3.3 2003-05-01 [OBD]
	471	BSD/OS 5.0 2003-05-?? [WRS]
	472	FreeBSD 5.1 2003-06-09 [FBD]
	473	Mac OS X 10.3 2003-10-24 [APL]
	474	FreeBSD 4.9 2003-10-28 [FBD]
	475	BSD/OS 5.1 ISE 2003-10-?? [WRS] (final version)
	476	OpenBSD 3.4 2003-11-01 [OBD]
	477	FreeBSD 5.2 2004-01-12 [FBD]
	478	FreeBSD 5.2.1 2004-02-22 [FBD] (patch release)
	479	NetBSD 1.6.2 2004-03-01 [NBD] (patch release)
	480	OpenBSD 3.5 2004-04-01 [OBD]
	481	FreeBSD 4.10 2004-05-27 [FBD]
b58193df	482	DragonFly 1.0 2004-07-12 [DFB]
aaec263a SW	483	OpenBSD 3.6 2004-10-29 [OBD]
	484	FreeBSD 5.3 2004-11-06 [FBD]
	485	NetBSD 2.0 2004-12-09 [NBD]
	486	FreeBSD 4.11 2005-01-25 [FBD]
	487	DragonFly 1.2.0 2005-04-08 [DFB]
	488	NetBSD 2.0.2 2005-04-14 [NBD] (security/critical release)
	489	Mac OS X 10.4 2005-04-29 [APL]
	490	FreeBSD 5.4 2005-05-09 [FBD]
	491	OpenBSD 3.7 2005-05-19 [OBD]
e3b8f921 SW	492	NetBSD 2.0.3 2005-10-31 [NBD] (security/critical release)
	493	OpenBSD 3.8 2005-11-01 [OBD]
	494	FreeBSD 6.0 2005-11-01 [FBD]
	495	NetBSD 2.1 2005-11-02 [NBD]
	496	NetBSD 3.0 2005-12-23 [NBD]
	497	DragonFly 1.4.0 2006-01-08 [DFB]
cc87307c	498	OpenBSD 3.9 2006-05-01 [OBD]
2604593a SW	499	FreeBSD 6.1 2006-05-08 [FBD]
	500	FreeBSD 5.5 2006-05-25 [FBD]
	501	NetBSD 3.0.1 2006-07-24 [NBD] (security/critical release)
	502	DragonFly 1.6.0 2006-07-24 [DFB]
3c37971c SW	503	OpenBSD 4.0 2006-11-01 [OBD]
	504	NetBSD 3.0.2 2006-11-04 [NBD] (security/critical release)
	505	NetBSD 3.1 2006-11-04 [NBD]
	506	FreeBSD 6.2 2007-01-15 [FBD]
ead66c62	507	DragonFly 1.8.0 2007-01-30 [DFB]
3e3f5d86 SW	508	OpenBSD 4.1 2007-05-01 [OBD]
3e3f5d86 SW	509	DragonFly 1.10.0 2007-08-06 [DFB]
00ef4ae2	510	Mac OS X 10.5 2007-10-26 [APL]
d6762fb9	511	OpenBSD 4.2 2007-11-01 [OBD]
951fd62a	512	NetBSD 4.0 2007-12-19 [NBD]
4a2380be	513	FreeBSD 6.3 2008-01-18 [FBD]
00ef4ae2 SW	514	DragonFly 1.12.0 2008-02-26 [DFB]
00ef4ae2 SW	515	FreeBSD 7.0 2008-02-27 [FBD]
5083139e	516	OpenBSD 4.3 2008-05-01 [OBD]
5f8ebbcb	517	DragonFly 2.0.0 2008-07-21 [DFB]
261c8119 MS	518	OpenBSD 4.4 2008-11-01 [OBD]
261c8119 MS	519	FreeBSD 6.4 2008-11-28 [FBD]
0f564fbc MS	520	FreeBSD 7.1 2009-01-04 [FBD]
0f564fbc MS	521	DragonFly 2.2.0 2009-02-17 [DFB]
b97a576c SW	522	NetBSD 5.0 2009-04-29 [NBD]
	523	OpenBSD 4.5 2009-05-01 [OBD]
	524	FreeBSD 7.2 2009-05-04 [FBD]
18e9d236	525	Mac OS X 10.6 2009-06-08 [APL]
0ee5575c	526	DragonFly 2.4.0 2009-09-16 [DFB]
07596c48 SW	527	OpenBSD 4.6 2009-10-18 [OBD]
07596c48 SW	528	FreeBSD 8.0 2009-11-26 [FBD]
bec098e2	529	FreeBSD 7.3 2010-03-23 [FBD]
587ed6e3	530	DragonFly 2.6.0 2010-03-28 [DFB]
c921db95	531	OpenBSD 4.7 2010-05-19 [OBD]
9b10e6be	532	FreeBSD 8.1 2010-07-24 [FBD]
e45c8094 SW	533	DragonFly 2.8.2 2010-10-30 [DFB]
	534	OpenBSD 4.8 2010-11-01 [OBD]
	535	NetBSD 5.1 2010-11-19 [NBD]
18e9d236 SW	536	FreeBSD 7.4 2011-02-24 [FBD]
18e9d236 SW	537	FreeBSD 8.2 2011-02-24 [FBD]
c5ddd1de	538	DragonFly 2.10.1 2011-04-26 [DFB]
3ed2fff3	539	OpenBSD 4.9 2011-05-01 [OBD]
ae286b04	540	OpenBSD 5.0 2011-11-01 [OBD]
984263bc MD	541
	542	Bibliography
	543	------------------------
	544
	545	Leffler, Samuel J., Marshall Kirk McKusick, Michael J Karels and John
	546	Quarterman. The Design and Implementation of the 4.3BSD UNIX Operating
	547	System. Reading, Mass. Addison-Wesley, 1989. ISBN 0-201-06196-1
	548
	549	Salus, Peter H. A quarter century of UNIX. Addison-Wesley Publishing
	550	Company, Inc., 1994. ISBN 0-201-54777-5
	551
	552	McKusick, Marshall Kirk, Keith Bostic, Michael J Karels, and John
	553	Quarterman. The Design and Implementation of the 4.4BSD Operating
	554	System. Reading, Mass. Addison-Wesley, 1996. ISBN 0-201-54979-4
	555
92761d66 SU	556	McKusick, Marshall Kirk, George Neville-Neil. The Design and
	557	Implementation of the FreeBSD Operating System.
	558	Addison-Wesley Professional, Published: Aug 2, 2004. ISBN 0-201-70245-2
	559
984263bc MD	560	Doug McIlroy. Research Unix Reader.
	561
	562	Michael G. Brown. The Role of BSD in the Development of Unix.
	563	Presented to the Tasmanian Unix Special Interest Group of the
	564	Australian Computer Society, Hobart, August 1993.
	565
	566	Peter H. Salus. Unix at 25. Byte Magazine, October 1994.
aaec263a	567	URL: http://www.byte.com/art/9410/sec8/art3.htm
984263bc	568
55680efe	569	Andreas Klemm, Lars Köller. If you're going to San Francisco ...
984263bc MD	570	Die freien BSD-Varianten von Unix. c't April 1997, page 368ff.
	571
	572	BSD Release Announcements collection.
07596c48	573	URL: http://www.FreeBSD.org/releases/
984263bc MD	574
	575	BSD Hypertext Man Pages
	576	URL: http://www.FreeBSD.org/cgi/man.cgi
	577
	578	UNIX history graphing project
	579	URL: http://minnie.tuhs.org/Unix_History/index.html
	580
	581	UNIX history
	582	URL: http://www.levenez.com/unix/
	583
	584	James Howard: The BSD Family Tree
cc87307c	585	URL: http://ezine.daemonnews.org/200104/bsd_family.html
984263bc MD	586	("what are the differences between FreeBSD, NetBSD, and OpenBSD?")
	587
	588
	589	Acknowledgments
	590	---------------
	591
	592	Josh Gilliam for suggestions, bug fixes, and finding very old
	593	original BSD announcements from Usenet or tapes.
	594
	595	Steven M. Schultz for providing 2.8BSD, 2.10BSD, 2.11BSD manual pages.
	596
	597	--
3c37971c	598	Copyright (c) 1997-2007 Wolfram Schneider <wosch@FreeBSD.ORG>
92761d66	599	URL: http://cvsweb.freebsd.org/src/share/misc/bsd-family-tree
984263bc	600
ae286b04	601	$FreeBSD: src/share/misc/bsd-family-tree,v 1.148 2011/11/02 14:28:36 maxim Exp $