[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    |      |                 |                       |
 |     v              |      |                 |                       |
 |                    |      |                 |                       |
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]

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 1.144 2011/03/05 15:18:11 gavin 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 \| \| \| \|
	248	\| 8.2 7.4 \| \| \| \|
	249	\| v \| \| \| \|
4a2380be	250	\| \| \| \| \|
07596c48	251	FreeBSD 9 -current \| NetBSD -current OpenBSD -current \|
92761d66 SU	252	\| \| \| \| \|
92761d66 SU	253	v v v v v
984263bc MD	254
	255	Time
	256	----------------
	257
	258	Time tolerance +/- 6 months, depending on which book/article you read; if it
	259	was the announcement in Usenet or if it was available as tape.
	260
	261	[44B] McKusick, Marshall Kirk, Keith Bostic, Michael J Karels,
	262	and John Quarterman. The Design and Implementation of
	263	the 4.4BSD Operating System.
	264	[APL] Apple website [http://www.apple.com/macosx/]
	265	[BSDI] Berkeley Software Design, Inc.
aaec263a	266	[DFB] DragonFlyBSD Project, The.
984263bc MD	267	[DOC] README, COPYRIGHT on tape.
	268	[FBD] FreeBSD Project, The.
	269	[KB] Keith Bostic. BSD2.10 available from Usenix. comp.unix.sources,
	270	Volume 11, Info 4, April, 1987.
	271	[KKK] Mike Karels, Kirk McKusick, and Keith Bostic. tahoe announcement.
	272	comp.bugs.4bsd.ucb-fixes, June 15, 1988.
	273	[KSJ] Michael J. Karels, Carl F. Smith, and William F. Jolitz.
	274	Changes in the Kernel in 2.9BSD. Second Berkeley Software
	275	Distribution UNIX Version 2.9, July, 1983.
	276	[NBD] NetBSD Project, The.
	277	[OBD] OpenBSD Project, The.
	278	[QCU] Salus, Peter H. A quarter century of UNIX.
	279	[SMS] Steven M. Schultz. 2.11BSD, UNIX for the PDP-11.
916f54c7	280	[TUHS] The Unix Historical Society. http://minnie.tuhs.org/Unix_History/.
984263bc MD	281	[USE] Usenet announcement.
	282	[WRS] Wind River Systems, Inc.
	283	[dmr] Dennis Ritchie, via E-Mail
	284
	285	Multics 1965
	286	UNIX Summer 1969
	287	DEC PDP-7
	288	First Edition 1971-11-03 [QCU]
	289	DEC PDP-11/20, Assembler
	290	Second Edition 1972-06-12 [QCU]
	291	10 UNIX installations
	292	Third Edition 1973-02-xx [QCU]
	293	Pipes, 16 installations
	294	Fourth Edition 1973-11-xx [QCU]
	295	rewriting in C effected,
	296	above 30 installations
	297	Fifth Edition 1974-06-xx [QCU]
	298	above 50 installations
	299	Sixth Edition 1975-05-xx [QCU]
	300	port to DEC Vax
	301	Seventh Edition 1979-01-xx [QCU]
	302	first portable UNIX
	303	Eighth Edition 1985-02-xx [QCU]
	304	VAX 11/750, VAX 11/780 [dmr]
	305	descended from 4.1c BSD [dmr]
	306	descended from 4.1 BSD [44B]
	307	scooping-out and replacement of the character-device
	308	and networking part by the streams mechanism
	309
	310	Ninth Edition 1986-09-xx [QCU]
	311	Tenth Edition 1989-10-xx [QCU]
	312
	313	1BSD late 1977
	314	1978-03-09 [QCU]
	315	PDP-11, Pascal, ex(1)
	316	30 free copies of 1BSD sent out
	317	35 tapes sold for 50 USD [QCU]
916f54c7	318	2BSD mid 1978 [QCU] 1979-05-10 [TUHS]
984263bc	319	75 2BSD tapes shipped
916f54c7	320	2.79BSD 1980-04-xx [TUHS]
984263bc MD	321	2.8BSD 1981-07-xx [KSJ]
	322
	323	2.8.1BSD 1982-01-xx [QCU]
	324	set of performance improvements
	325	2.9BSD 1983-07-xx [KSJ]
916f54c7	326	2.9.1BSD 1983-11-xx [TUHS]
984263bc MD	327	2.9BSD-Seismo 1985-08-xx [SMS]
	328	2.10BSD 1987-04-xx [KKK]
	329	2.10.1BSD 1989-01-xx [SMS]
	330	2.11BSD 1992-02-xx [SMS]
	331	2.11BSD rev #430 1999-12-13 [SMS]
	332
	333	32V 1978-1[01]-xx [QCU]
916f54c7	334	3BSD late 1979 [QCU] March 1980 [TUHS]
984263bc MD	335	virtual memory, page replacement,
	336	demand paging
	337	4.0BSD 1980-10-xx
	338	4.1BSD 1981-07-08 [DOC]
	339	4.1aBSD 1982-04-xx
	340	alpha release, 100 sites, networking [44B]
	341	4.1bBSD internal release, fast filesystem [44B]
	342	4.1cBSD late 1982
	343	beta release, IPC [44B]
	344	4.2BSD 1983-09-xx [QCU]
	345	1983-08-03 [DOC]
	346	4.3BSD 1986-06-xx [QCU]
	347	1986-04-05 [KB], [DOC]
	348	4.3BSD Tahoe 1988-06-15 [QCU], [DOC]
	349	4.3BSD NET/1 1988-11-xx [QCU]
	350	1989-01-01 [DOC]
	351	4.3BSD Reno 1990-06-29 [QCU], [DOC]
	352	4.3BSD NET/2 1991-06-28 [QCU], [DOC]
	353
	354	BSD/386 ALPHA 1991-12-xx [BSDI]
	355	first code released to people outside BSDI
	356	386BSD 0.0 1992-02-xx [DOC]
	357	BSD/386 0.3.1 1992-04-xx [BSDI] first ext. beta; B customers
	358	BSD/386 0.3.3 1992-06-xx [BSDI] first CDROM version
	359	386BSD 0.1 1992-07-28 [DOC]
	360	4.4BSD Alpha 1992-07-07
	361	BSD/386 0.9.3 1992-10-xx [BSDI]
	362	first external gamma; G customers
	363	BSD/386 0.9.4 1992-12-xx [BSDI]
	364	would have been 1.0 except for request
	365	for preliminary injunction
	366	BSD/386 1.0 1993-03-xx [BSDI]
	367	injunction denied; first official release
	368	NetBSD 0.8 1993-04-20 [NBD]
	369	4.4BSD 1993-06-01 [USE]
	370	NetBSD 0.9 1993-08-23 [NBD]
	371	FreeBSD 1.0 1993-11-01 [FBD]
3e3f5d86 SW	372	FreeBSD 1.0.2 1993-11-14 [FBD]
3e3f5d86 SW	373	supersedes 1.0 13 days after release.
984263bc MD	374	BSD/386 1.1 1994-02-xx [BSDI]
984263bc MD	375	4.4BSD Lite 1994-03-01 [USE]
aaec263a SW	376	FreeBSD 1.1 1994-05-07 [FBD]
	377	FreeBSD 1.1.5 1994-06-30 [FBD]
	378	FreeBSD 1.1.5.1 1994-07-05 [FBD]
	379	supersedes 1.1.5 5 days after release.
984263bc MD	380	NetBSD 1.0 1994-10-26 [NBD]
984263bc MD	381	386BSD 1.0 1994-11-12 [USE]
aaec263a	382	FreeBSD 2.0 1994-11-23 [FBD]
984263bc MD	383	BSD/OS 2.0 1995-01-xx [BSDI] 4.4 lite based
	384	FreeBSD 2.0.5 1995-06-10 [FBD]
	385	BSD/OS 2.0.1 1995-06-xx [BSDI]
	386	4.4BSD Lite Release 2 1995-06-xx [44B]
	387	the true final distribution from the CSRG
	388	FreeBSD 2.1.0 1995-11-19 [FBD]
	389	NetBSD 1.1 1995-11-26 [NBD]
	390	BSD/OS 2.1 1996-01-xx [BSDI]
	391	FreeBSD 2.1.5 1996-07-14 [FBD]
	392	NetBSD 1.2 1996-10-04 [NBD]
	393	OpenBSD 2.0 1996-10-18 [OBD]
	394	FreeBSD 2.1.6 1996-11-16 [FBD]
	395	FreeBSD 2.1.6.1 1996-11-25 [FBD] (sendmail security release)
	396	Rhapsody 1997-xx-xx
	397	FreeBSD 2.1.7 1997-02-20 [FBD]
	398	BSD/OS 3.0 1997-02-xx [BSDI] 4.4 lite2 based
	399	FreeBSD 2.2.0 1997-03-16 [FBD]
	400	FreeBSD 2.2.1 1997-03-25 [FBD]
	401	FreeBSD 2.2.2 1997-05-16 [FBD]
	402	NetBSD 1.2.1 1997-05-20 [NBD] (patch release)
	403	OpenBSD 2.1 1997-06-01 [OBD]
	404	FreeBSD 2.2.5 1997-10-22 [FBD]
	405	OpenBSD 2.2 1997-12-01 [OBD]
	406	NetBSD 1.3 1998-01-04 [NBD]
	407	FreeBSD 2.2.6 1998-03-25 [FBD]
	408	NetBSD 1.3.1 1998-03-09 [NBD] (patch release)
	409	BSD/OS 3.1 1998-03-xx [BSDI]
	410	OpenBSD 2.3 1998-05-19 [OBD]
	411	NetBSD 1.3.2 1998-05-29 [NBD] (patch release)
	412	FreeBSD 2.2.7 1998-07-22 [FBD]
	413	BSD/OS 4.0 1998-08-xx [BSDI]
	414	2-lock MP support, ELF executables
	415	FreeBSD 3.0 1998-10-16 [FBD]
	416	FreeBSD-3.0 is a snapshot from -current,
	417	while 3.1 and 3.2 are from 3.x-stable which
	418	was branched quite some time after 3.0-release
	419	FreeBSD 2.2.8 1998-11-29 [FBD]
	420	OpenBSD 2.4 1998-12-01 [OBD]
	421	NetBSD 1.3.3 1998-12-23 [NBD] (patch release)
	422	FreeBSD 3.1 1999-02-15 [FBD]
	423	BSD/OS 4.0.1 1999-03-xx [BSDI]
	424	NetBSD 1.4 1999-05-12 [NBD]
	425	FreeBSD 3.2 1999-05-17 [FBD]
	426	OpenBSD 2.5 1999-05-19 [OBD]
	427	NetBSD 1.4.1 1999-08-26 [NBD] (patch release)
	428	FreeBSD 3.3 1999-09-17 [FBD]
	429	OpenBSD 2.6 1999-12-01 [OBD]
	430	FreeBSD 3.4 1999-12-20 [FBD]
	431	BSD/OS 4.1 1999-12-xx [BSDI]
	432	FreeBSD 4.0 2000-03-13 [FBD]
	433	NetBSD 1.4.2 2000-03-19 [NBD] (patch release)
	434	OpenBSD 2.7 2000-06-15 [OBD]
	435	FreeBSD 3.5 2000-06-24 [FBD]
	436	FreeBSD 4.1 2000-07-27 [FBD]
	437	FreeBSD 3.5.1 2000-07-28 [FBD]
	438	FreeBSD 4.1.1 2000-09-25 [FBD] (a network-only patch release)
	439	FreeBSD 4.2 2000-11-21 [FBD]
	440	NetBSD 1.4.3 2000-11-25 [NBD] (patch release)
	441	BSD/OS 4.2 2000-11-29 [BSDI]
	442	OpenBSD 2.8 2000-12-01 [OBD]
	443	NetBSD 1.5 2000-12-06 [NBD]
	444	Mac OS X 10.0 2001-03-24 [APL]
	445	FreeBSD 4.3 2001-04-20 [FBD]
	446	OpenBSD 2.9 2001-06-01 [OBD]
447	NetBSD 1.5.1 2001-07-11 [NBD] (patch release)
448	NetBSD 1.5.2 2001-09-13 [NBD] (patch release)
449	FreeBSD 4.4 2001-09-18 [FBD]
450	Mac OS X 10.1 2001-09-29 [APL]
451	OpenBSD 3.0 2001-12-01 [OBD]
452	FreeBSD 4.5 2002-01-29 [FBD]
453	BSD/OS 4.3 2002-03-14 [WRS]
454	OpenBSD 3.1 2002-05-19 [OBD]
455	FreeBSD 4.6 2002-06-15 [FBD]
456	NetBSD 1.5.3 2002-07-22 [NBD] (patch release)
457	FreeBSD 4.6.2 2002-08-15 [FBD] (patch release)
458	Mac OS X 10.2 2002-08-23 [APL]
459	NetBSD 1.6 2002-09-14 [NBD]
460	FreeBSD 4.7 2002-10-08 [FBD]
461	OpenBSD 3.2 2002-11-01 [OBD]
462	FreeBSD 5.0 2003-01-17 [FBD]
463	FreeBSD 5.0 is a separate branch off of
464	-current, similar to 3.0.
465	FreeBSD 4.8 2003-04-03 [FBD]
92761d66 SU	466	NetBSD 1.6.1 2003-04-21 [NBD] (patch release)
	467	OpenBSD 3.3 2003-05-01 [OBD]
	468	BSD/OS 5.0 2003-05-?? [WRS]
	469	FreeBSD 5.1 2003-06-09 [FBD]
	470	Mac OS X 10.3 2003-10-24 [APL]
	471	FreeBSD 4.9 2003-10-28 [FBD]
	472	BSD/OS 5.1 ISE 2003-10-?? [WRS] (final version)
	473	OpenBSD 3.4 2003-11-01 [OBD]
	474	FreeBSD 5.2 2004-01-12 [FBD]
	475	FreeBSD 5.2.1 2004-02-22 [FBD] (patch release)
	476	NetBSD 1.6.2 2004-03-01 [NBD] (patch release)
	477	OpenBSD 3.5 2004-04-01 [OBD]
	478	FreeBSD 4.10 2004-05-27 [FBD]
b58193df	479	DragonFly 1.0 2004-07-12 [DFB]
aaec263a SW	480	OpenBSD 3.6 2004-10-29 [OBD]
	481	FreeBSD 5.3 2004-11-06 [FBD]
	482	NetBSD 2.0 2004-12-09 [NBD]
	483	FreeBSD 4.11 2005-01-25 [FBD]
	484	DragonFly 1.2.0 2005-04-08 [DFB]
	485	NetBSD 2.0.2 2005-04-14 [NBD] (security/critical release)
	486	Mac OS X 10.4 2005-04-29 [APL]
	487	FreeBSD 5.4 2005-05-09 [FBD]
	488	OpenBSD 3.7 2005-05-19 [OBD]
e3b8f921 SW	489	NetBSD 2.0.3 2005-10-31 [NBD] (security/critical release)
	490	OpenBSD 3.8 2005-11-01 [OBD]
	491	FreeBSD 6.0 2005-11-01 [FBD]
	492	NetBSD 2.1 2005-11-02 [NBD]
	493	NetBSD 3.0 2005-12-23 [NBD]
	494	DragonFly 1.4.0 2006-01-08 [DFB]
cc87307c	495	OpenBSD 3.9 2006-05-01 [OBD]
2604593a SW	496	FreeBSD 6.1 2006-05-08 [FBD]
	497	FreeBSD 5.5 2006-05-25 [FBD]
	498	NetBSD 3.0.1 2006-07-24 [NBD] (security/critical release)
	499	DragonFly 1.6.0 2006-07-24 [DFB]
3c37971c SW	500	OpenBSD 4.0 2006-11-01 [OBD]
	501	NetBSD 3.0.2 2006-11-04 [NBD] (security/critical release)
	502	NetBSD 3.1 2006-11-04 [NBD]
	503	FreeBSD 6.2 2007-01-15 [FBD]
ead66c62	504	DragonFly 1.8.0 2007-01-30 [DFB]
3e3f5d86 SW	505	OpenBSD 4.1 2007-05-01 [OBD]
3e3f5d86 SW	506	DragonFly 1.10.0 2007-08-06 [DFB]
00ef4ae2	507	Mac OS X 10.5 2007-10-26 [APL]
d6762fb9	508	OpenBSD 4.2 2007-11-01 [OBD]
951fd62a	509	NetBSD 4.0 2007-12-19 [NBD]
4a2380be	510	FreeBSD 6.3 2008-01-18 [FBD]
00ef4ae2 SW	511	DragonFly 1.12.0 2008-02-26 [DFB]
00ef4ae2 SW	512	FreeBSD 7.0 2008-02-27 [FBD]
5083139e	513	OpenBSD 4.3 2008-05-01 [OBD]
5f8ebbcb	514	DragonFly 2.0.0 2008-07-21 [DFB]
261c8119 MS	515	OpenBSD 4.4 2008-11-01 [OBD]
261c8119 MS	516	FreeBSD 6.4 2008-11-28 [FBD]
0f564fbc MS	517	FreeBSD 7.1 2009-01-04 [FBD]
0f564fbc MS	518	DragonFly 2.2.0 2009-02-17 [DFB]
b97a576c SW	519	NetBSD 5.0 2009-04-29 [NBD]
	520	OpenBSD 4.5 2009-05-01 [OBD]
	521	FreeBSD 7.2 2009-05-04 [FBD]
18e9d236	522	Mac OS X 10.6 2009-06-08 [APL]
0ee5575c	523	DragonFly 2.4.0 2009-09-16 [DFB]
07596c48 SW	524	OpenBSD 4.6 2009-10-18 [OBD]
07596c48 SW	525	FreeBSD 8.0 2009-11-26 [FBD]
bec098e2	526	FreeBSD 7.3 2010-03-23 [FBD]
587ed6e3	527	DragonFly 2.6.0 2010-03-28 [DFB]
c921db95	528	OpenBSD 4.7 2010-05-19 [OBD]
9b10e6be	529	FreeBSD 8.1 2010-07-24 [FBD]
e45c8094 SW	530	DragonFly 2.8.2 2010-10-30 [DFB]
	531	OpenBSD 4.8 2010-11-01 [OBD]
	532	NetBSD 5.1 2010-11-19 [NBD]
18e9d236 SW	533	FreeBSD 7.4 2011-02-24 [FBD]
18e9d236 SW	534	FreeBSD 8.2 2011-02-24 [FBD]
984263bc MD	535
	536	Bibliography
	537	------------------------
	538
	539	Leffler, Samuel J., Marshall Kirk McKusick, Michael J Karels and John
	540	Quarterman. The Design and Implementation of the 4.3BSD UNIX Operating
	541	System. Reading, Mass. Addison-Wesley, 1989. ISBN 0-201-06196-1
	542
	543	Salus, Peter H. A quarter century of UNIX. Addison-Wesley Publishing
	544	Company, Inc., 1994. ISBN 0-201-54777-5
	545
	546	McKusick, Marshall Kirk, Keith Bostic, Michael J Karels, and John
	547	Quarterman. The Design and Implementation of the 4.4BSD Operating
	548	System. Reading, Mass. Addison-Wesley, 1996. ISBN 0-201-54979-4
	549
92761d66 SU	550	McKusick, Marshall Kirk, George Neville-Neil. The Design and
	551	Implementation of the FreeBSD Operating System.
	552	Addison-Wesley Professional, Published: Aug 2, 2004. ISBN 0-201-70245-2
	553
984263bc MD	554	Doug McIlroy. Research Unix Reader.
	555
	556	Michael G. Brown. The Role of BSD in the Development of Unix.
	557	Presented to the Tasmanian Unix Special Interest Group of the
	558	Australian Computer Society, Hobart, August 1993.
	559
	560	Peter H. Salus. Unix at 25. Byte Magazine, October 1994.
aaec263a	561	URL: http://www.byte.com/art/9410/sec8/art3.htm
984263bc MD	562
	563	Andreas Klemm, Lars Köller. If you're going to San Francisco ...
	564	Die freien BSD-Varianten von Unix. c't April 1997, page 368ff.
	565
	566	BSD Release Announcements collection.
07596c48	567	URL: http://www.FreeBSD.org/releases/
984263bc MD	568
	569	BSD Hypertext Man Pages
	570	URL: http://www.FreeBSD.org/cgi/man.cgi
	571
	572	UNIX history graphing project
	573	URL: http://minnie.tuhs.org/Unix_History/index.html
	574
	575	UNIX history
	576	URL: http://www.levenez.com/unix/
	577
	578	James Howard: The BSD Family Tree
cc87307c	579	URL: http://ezine.daemonnews.org/200104/bsd_family.html
984263bc MD	580	("what are the differences between FreeBSD, NetBSD, and OpenBSD?")
	581
	582
	583	Acknowledgments
	584	---------------
	585
	586	Josh Gilliam for suggestions, bug fixes, and finding very old
	587	original BSD announcements from Usenet or tapes.
	588
	589	Steven M. Schultz for providing 2.8BSD, 2.10BSD, 2.11BSD manual pages.
	590
	591	--
3c37971c	592	Copyright (c) 1997-2007 Wolfram Schneider <wosch@FreeBSD.ORG>
92761d66	593	URL: http://cvsweb.freebsd.org/src/share/misc/bsd-family-tree
984263bc	594
18e9d236	595	$FreeBSD: src/share/misc/bsd-family-tree,v 1.144 2011/03/05 15:18:11 gavin Exp $