share/misc/bsd-family-tree

   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                   |                      |
  28                4.0BSD                2.79BSD
  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    |             |
 140  |      |         Mac OS X   |             OpenBSD 2.8     BSD/OS 4.2
 141  |      |             |      |                 |             |
 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       |
 154  |      |           \ |      | NetBSD 1.5.3    |             |
 155  |   FreeBSD 4.6.2 Mac OS X  |                 |             |
 156  |      |            10.2    |                 |             |
 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  |      |          |  |      |                 |
 171  |   FreeBSD 4.11  |  |      |                 |
 172  |                 |  |      |                 |
 173  |                  `-|------|-----------------|---------------------.
 174  |                    |      |                 |                      \
 175 FreeBSD 5.0           |      |                 |                       |
 176  |                    |      |                 |                       |
 177 FreeBSD 5.1           |      |                 |                 DragonFly 1.0
 178  |          \         |      |                 |                       |
 179  |           ----- Mac OS X  |                 |                       |
 180  |                   10.3    |                 |                       |
 181 FreeBSD 5.2           |      |                 |                       |
 182  |      |             |      |                 |                       |
 183  |   FreeBSD 5.2.1    |      |                 |                       |
 184  |                    |      |                 |                       |
 185  *-------FreeBSD 5.3  |      |                 |                       |
 186  |           |        |      |             OpenBSD 3.6                 |
 187  |           |        |   NetBSD 2.0           |                       |
 188  |           |        |      | |  |            |                DragonFly 1.2.0
 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           |                       |
 201  |     |     |        |      | |  |            |                DragonFly 1.4.0
 202  |     |     |        |      | |  |        OpenBSD 3.9                 |
 203  |  FreeBSD  |        |      | |  |            |                       |
 204  |    6.1    |        |      | |  |            |                       |
 205  |     |  FreeBSD 5.5 |      | |  |            |                       |
 206  |     |              |      | | NetBSD 3.0.1  |                DragonFly 1.6.0
 207  |     |              |      | |  |            |                       |
 208  |     |              |      | |  |        OpenBSD 4.0                 |
 209  |     |              |      | | NetBSD 3.0.2  |                       |
 210  |     |              |      | NetBSD 3.1      |                       |
 211  | FreeBSD 6.2        |      |                 |                       |
 212  |     |              |      |                 |                DragonFly 1.8.0
 213  |     |              |      |             OpenBSD 4.1                 |
 214  |     |              |      |                 |                DragonFly 1.10.0
 215  |     |           Mac OS X  |                 |                       |
 216  |     |             10.5    |                 |                       |
 217  |     |              |      |             OpenBSD 4.2                 |
 218  |     |              |   NetBSD 4.0           |                       |
 219  | FreeBSD 6.3        |      |                 |                       |
 220  |            \       |      |                 |                       |
 221  *--FreeBSD    |      |      |                 |                DragonFly 1.12.0
 222  |    7.0      |      |      |                 |                       |
 223  |     |       |      |      |             OpenBSD 4.3                 |
 224  |     |       |      |      |                 |                DragonFly 2.0.0
 225  |     |    FreeBSD   |      |             OpenBSD 4.4                 |
 226  |     |      6.4     |      |                 |                       |
 227  |     |              |      |                 |                       |
 228  |  FreeBSD 7.1       |      |                 |                       |
 229  |     |              |      |                 |                DragonFly 2.2.0
 230  |  FreeBSD 7.2       |   NetBSD 5.0       OpenBSD 4.5                 |
 231  |     |              |      |                 |                       |
 232  |     |              |      |                 |                DragonFly 2.4.0
 233  |     V              |      |             OpenBSD 4.6                 |
 234  |                    |      |                 |                       |
 235  *--FreeBSD           |      |                 |                       |
 236  |    8.0             |      |                 |                       |
 237  |     |              |      |                 |                       |
 238  |     V              |      |                 |                       |
 239  |                    |      |                 |                       |
 240 FreeBSD 9 -current    |  NetBSD -current  OpenBSD -current             |
 241  |                    |      |                 |                       |
 242  v                    v      v                 v                       v
 243
 244 Time
 245 ----------------
 246
 247 Time tolerance +/- 6 months, depending on which book/article you read; if it
 248 was the announcement in Usenet or if it was available as tape.
 249
 250 [44B] McKusick, Marshall Kirk, Keith Bostic, Michael J Karels,
 251         and John Quarterman. The Design and Implementation of
 252         the 4.4BSD Operating System.
 253 [APL] Apple website [http://www.apple.com/macosx/]
 254 [BSDI] Berkeley Software Design, Inc.
 255 [DFB] DragonFlyBSD Project, The.
 256 [DOC] README, COPYRIGHT on tape.
 257 [FBD] FreeBSD Project, The.
 258 [KB]  Keith Bostic. BSD2.10 available from Usenix. comp.unix.sources,
 259         Volume 11, Info 4, April, 1987.
 260 [KKK] Mike Karels, Kirk McKusick, and Keith Bostic. tahoe announcement.
 261         comp.bugs.4bsd.ucb-fixes, June 15, 1988.
 262 [KSJ] Michael J. Karels, Carl F. Smith, and William F. Jolitz.
 263         Changes in the Kernel in 2.9BSD. Second Berkeley Software
 264         Distribution UNIX Version 2.9, July, 1983.
 265 [NBD] NetBSD Project, The.
 266 [OBD] OpenBSD Project, The.
 267 [QCU] Salus, Peter H. A quarter century of UNIX.
 268 [SMS] Steven M. Schultz. 2.11BSD, UNIX for the PDP-11.
 269 [TUHS] The Unix Historical Society.  http://minnie.tuhs.org/Unix_History/.
 270 [USE] Usenet announcement.
 271 [WRS] Wind River Systems, Inc.
 272 [dmr] Dennis Ritchie, via E-Mail
 273
 274 Multics                 1965
 275 UNIX                    Summer 1969
 276                                 DEC PDP-7
 277 First   Edition         1971-11-03 [QCU]
 278                                 DEC PDP-11/20, Assembler
 279 Second  Edition         1972-06-12 [QCU]
 280                                 10 UNIX installations
 281 Third   Edition         1973-02-xx [QCU]
 282                                 Pipes, 16 installations
 283 Fourth  Edition         1973-11-xx [QCU]
 284                                 rewriting in C effected,
 285                                 above 30 installations
 286 Fifth   Edition         1974-06-xx [QCU]
 287                                 above 50 installations
 288 Sixth   Edition         1975-05-xx [QCU]
 289                                 port to DEC Vax
 290 Seventh Edition         1979-01-xx [QCU]
 291                                 first portable UNIX
 292 Eighth  Edition         1985-02-xx [QCU]
 293                                 VAX 11/750, VAX 11/780 [dmr]
 294                                 descended from 4.1c BSD [dmr]
 295                                 descended from 4.1 BSD [44B]
 296                         scooping-out and replacement of the character-device
 297                         and networking part by the streams mechanism
 298
 299 Ninth   Edition         1986-09-xx [QCU]
 300 Tenth   Edition         1989-10-xx [QCU]
 301
 302 1BSD                    late 1977
 303                         1978-03-09 [QCU]
 304                                 PDP-11, Pascal, ex(1)
 305                                 30 free copies of 1BSD sent out
 306                                 35 tapes sold for 50 USD [QCU]
 307 2BSD                    mid 1978 [QCU] 1979-05-10 [TUHS]
 308                                 75 2BSD tapes shipped
 309 2.79BSD                 1980-04-xx [TUHS]
 310 2.8BSD                  1981-07-xx [KSJ]
 311
 312 2.8.1BSD                1982-01-xx [QCU]
 313                                 set of performance improvements
 314 2.9BSD                  1983-07-xx [KSJ]
 315 2.9.1BSD                1983-11-xx [TUHS]
 316 2.9BSD-Seismo           1985-08-xx [SMS]
 317 2.10BSD                 1987-04-xx [KKK]
 318 2.10.1BSD               1989-01-xx [SMS]
 319 2.11BSD                 1992-02-xx [SMS]
 320 2.11BSD rev #430        1999-12-13 [SMS]
 321
 322 32V                     1978-1[01]-xx [QCU]
 323 3BSD                    late 1979 [QCU] March 1980 [TUHS]
 324                                 virtual memory, page replacement,
 325                                 demand paging
 326 4.0BSD                  1980-10-xx
 327 4.1BSD                  1981-07-08 [DOC]
 328 4.1aBSD                 1982-04-xx
 329                                 alpha release, 100 sites, networking [44B]
 330 4.1bBSD                         internal release, fast filesystem [44B]
 331 4.1cBSD                 late 1982
 332                                 beta release, IPC [44B]
 333 4.2BSD                  1983-09-xx [QCU]
 334                         1983-08-03 [DOC]
 335 4.3BSD                  1986-06-xx [QCU]
 336                         1986-04-05 [KB], [DOC]
 337 4.3BSD Tahoe            1988-06-15 [QCU], [DOC]
 338 4.3BSD NET/1            1988-11-xx [QCU]
 339                         1989-01-01 [DOC]
 340 4.3BSD Reno             1990-06-29 [QCU], [DOC]
 341 4.3BSD NET/2            1991-06-28 [QCU], [DOC]
 342
 343 BSD/386 ALPHA           1991-12-xx [BSDI]
 344                                 first code released to people outside BSDI
 345 386BSD 0.0              1992-02-xx [DOC]
 346 BSD/386 0.3.1           1992-04-xx [BSDI] first ext. beta; B customers
 347 BSD/386 0.3.3           1992-06-xx [BSDI] first CDROM version
 348 386BSD 0.1              1992-07-28 [DOC]
 349 4.4BSD Alpha            1992-07-07
 350 BSD/386 0.9.3           1992-10-xx [BSDI]
 351                                 first external gamma; G customers
 352 BSD/386 0.9.4           1992-12-xx [BSDI]
 353                                 would have been 1.0 except for request
 354                                 for preliminary injunction
 355 BSD/386 1.0             1993-03-xx [BSDI]
 356                                 injunction denied; first official release
 357 NetBSD 0.8              1993-04-20 [NBD]
 358 4.4BSD                  1993-06-01 [USE]
 359 NetBSD 0.9              1993-08-23 [NBD]
 360 FreeBSD 1.0             1993-11-01 [FBD]
 361 FreeBSD 1.0.2           1993-11-14 [FBD]
 362                                 supersedes 1.0 13 days after release.
 363 BSD/386 1.1             1994-02-xx [BSDI]
 364 4.4BSD Lite             1994-03-01 [USE]
 365 FreeBSD 1.1             1994-05-07 [FBD]
 366 FreeBSD 1.1.5           1994-06-30 [FBD]
 367 FreeBSD 1.1.5.1         1994-07-05 [FBD]
 368                                 supersedes 1.1.5 5 days after release.
 369 NetBSD 1.0              1994-10-26 [NBD]
 370 386BSD 1.0              1994-11-12 [USE]
 371 FreeBSD 2.0             1994-11-23 [FBD]
 372 BSD/OS 2.0              1995-01-xx [BSDI] 4.4 lite based
 373 FreeBSD 2.0.5           1995-06-10 [FBD]
 374 BSD/OS 2.0.1            1995-06-xx [BSDI]
 375 4.4BSD Lite Release 2   1995-06-xx [44B]
 376                                 the true final distribution from the CSRG
 377 FreeBSD 2.1.0           1995-11-19 [FBD]
 378 NetBSD 1.1              1995-11-26 [NBD]
 379 BSD/OS 2.1              1996-01-xx [BSDI]
 380 FreeBSD 2.1.5           1996-07-14 [FBD]
 381 NetBSD 1.2              1996-10-04 [NBD]
 382 OpenBSD 2.0             1996-10-18 [OBD]
 383 FreeBSD 2.1.6           1996-11-16 [FBD]
 384 FreeBSD 2.1.6.1         1996-11-25 [FBD] (sendmail security release)
 385 Rhapsody                1997-xx-xx
 386 FreeBSD 2.1.7           1997-02-20 [FBD]
 387 BSD/OS 3.0              1997-02-xx [BSDI] 4.4 lite2 based
 388 FreeBSD 2.2.0           1997-03-16 [FBD]
 389 FreeBSD 2.2.1           1997-03-25 [FBD]
 390 FreeBSD 2.2.2           1997-05-16 [FBD]
 391 NetBSD 1.2.1            1997-05-20 [NBD] (patch release)
 392 OpenBSD 2.1             1997-06-01 [OBD]
 393 FreeBSD 2.2.5           1997-10-22 [FBD]
 394 OpenBSD 2.2             1997-12-01 [OBD]
 395 NetBSD 1.3              1998-01-04 [NBD]
 396 FreeBSD 2.2.6           1998-03-25 [FBD]
 397 NetBSD 1.3.1            1998-03-09 [NBD] (patch release)
 398 BSD/OS 3.1              1998-03-xx [BSDI]
 399 OpenBSD 2.3             1998-05-19 [OBD]
 400 NetBSD 1.3.2            1998-05-29 [NBD] (patch release)
 401 FreeBSD 2.2.7           1998-07-22 [FBD]
 402 BSD/OS 4.0              1998-08-xx [BSDI]
 403                                 2-lock MP support, ELF executables
 404 FreeBSD 3.0             1998-10-16 [FBD]
 405                                 FreeBSD-3.0 is a snapshot from -current,
 406                                 while 3.1 and 3.2 are from 3.x-stable which
 407                                 was branched quite some time after 3.0-release
 408 FreeBSD 2.2.8           1998-11-29 [FBD]
 409 OpenBSD 2.4             1998-12-01 [OBD]
 410 NetBSD 1.3.3            1998-12-23 [NBD] (patch release)
 411 FreeBSD 3.1             1999-02-15 [FBD]
 412 BSD/OS 4.0.1            1999-03-xx [BSDI]
 413 NetBSD 1.4              1999-05-12 [NBD]
 414 FreeBSD 3.2             1999-05-17 [FBD]
 415 OpenBSD 2.5             1999-05-19 [OBD]
 416 NetBSD 1.4.1            1999-08-26 [NBD] (patch release)
 417 FreeBSD 3.3             1999-09-17 [FBD]
 418 OpenBSD 2.6             1999-12-01 [OBD]
 419 FreeBSD 3.4             1999-12-20 [FBD]
 420 BSD/OS 4.1              1999-12-xx [BSDI]
 421 FreeBSD 4.0             2000-03-13 [FBD]
 422 NetBSD 1.4.2            2000-03-19 [NBD] (patch release)
 423 OpenBSD 2.7             2000-06-15 [OBD]
 424 FreeBSD 3.5             2000-06-24 [FBD]
 425 FreeBSD 4.1             2000-07-27 [FBD]
 426 FreeBSD 3.5.1           2000-07-28 [FBD]
 427 FreeBSD 4.1.1           2000-09-25 [FBD] (a network-only patch release)
 428 FreeBSD 4.2             2000-11-21 [FBD]
 429 NetBSD 1.4.3            2000-11-25 [NBD] (patch release)
 430 BSD/OS 4.2              2000-11-29 [BSDI]
 431 OpenBSD 2.8             2000-12-01 [OBD]
 432 NetBSD 1.5              2000-12-06 [NBD]
 433 Mac OS X 10.0           2001-03-24 [APL]
 434 FreeBSD 4.3             2001-04-20 [FBD]
 435 OpenBSD 2.9             2001-06-01 [OBD]
 436 NetBSD 1.5.1            2001-07-11 [NBD] (patch release)
 437 NetBSD 1.5.2            2001-09-13 [NBD] (patch release)
 438 FreeBSD 4.4             2001-09-18 [FBD]
 439 Mac OS X 10.1           2001-09-29 [APL]
 440 OpenBSD 3.0             2001-12-01 [OBD]
 441 FreeBSD 4.5             2002-01-29 [FBD]
 442 BSD/OS 4.3              2002-03-14 [WRS]
 443 OpenBSD 3.1             2002-05-19 [OBD]
 444 FreeBSD 4.6             2002-06-15 [FBD]
 445 NetBSD 1.5.3            2002-07-22 [NBD] (patch release)
 446 FreeBSD 4.6.2           2002-08-15 [FBD] (patch release)
 447 Mac OS X 10.2           2002-08-23 [APL]
 448 NetBSD 1.6              2002-09-14 [NBD]
 449 FreeBSD 4.7             2002-10-08 [FBD]
 450 OpenBSD 3.2             2002-11-01 [OBD]
 451 FreeBSD 5.0             2003-01-17 [FBD]
 452                                 FreeBSD 5.0 is a separate branch off of
 453                                 -current, similar to 3.0.
 454 FreeBSD 4.8             2003-04-03 [FBD]
 455 NetBSD 1.6.1            2003-04-21 [NBD] (patch release)
 456 OpenBSD 3.3             2003-05-01 [OBD]
 457 BSD/OS 5.0              2003-05-?? [WRS]
 458 FreeBSD 5.1             2003-06-09 [FBD]
 459 Mac OS X 10.3           2003-10-24 [APL]
 460 FreeBSD 4.9             2003-10-28 [FBD]
 461 BSD/OS 5.1 ISE          2003-10-?? [WRS] (final version)
 462 OpenBSD 3.4             2003-11-01 [OBD]
 463 FreeBSD 5.2             2004-01-12 [FBD]
 464 FreeBSD 5.2.1           2004-02-22 [FBD] (patch release)
 465 NetBSD 1.6.2            2004-03-01 [NBD] (patch release)
 466 OpenBSD 3.5             2004-04-01 [OBD]
 467 FreeBSD 4.10            2004-05-27 [FBD]
 468 DragonFly 1.0           2004-07-12 [DFB]
 469 OpenBSD 3.6             2004-10-29 [OBD]
 470 FreeBSD 5.3             2004-11-06 [FBD]
 471 NetBSD 2.0              2004-12-09 [NBD]
 472 FreeBSD 4.11            2005-01-25 [FBD]
 473 DragonFly 1.2.0         2005-04-08 [DFB]
 474 NetBSD 2.0.2            2005-04-14 [NBD] (security/critical release)
 475 Mac OS X 10.4           2005-04-29 [APL]
 476 FreeBSD 5.4             2005-05-09 [FBD]
 477 OpenBSD 3.7             2005-05-19 [OBD]
 478 NetBSD 2.0.3            2005-10-31 [NBD] (security/critical release)
 479 OpenBSD 3.8             2005-11-01 [OBD]
 480 FreeBSD 6.0             2005-11-01 [FBD]
 481 NetBSD 2.1              2005-11-02 [NBD]
 482 NetBSD 3.0              2005-12-23 [NBD]
 483 DragonFly 1.4.0         2006-01-08 [DFB]
 484 OpenBSD 3.9             2006-05-01 [OBD]
 485 FreeBSD 6.1             2006-05-08 [FBD]
 486 FreeBSD 5.5             2006-05-25 [FBD]
 487 NetBSD 3.0.1            2006-07-24 [NBD] (security/critical release)
 488 DragonFly 1.6.0         2006-07-24 [DFB]
 489 OpenBSD 4.0             2006-11-01 [OBD]
 490 NetBSD 3.0.2            2006-11-04 [NBD] (security/critical release)
 491 NetBSD 3.1              2006-11-04 [NBD]
 492 FreeBSD 6.2             2007-01-15 [FBD]
 493 DragonFly 1.8.0         2007-01-30 [DFB]
 494 OpenBSD 4.1             2007-05-01 [OBD]
 495 DragonFly 1.10.0        2007-08-06 [DFB]
 496 Mac OS X 10.5           2007-10-26 [APL]
 497 OpenBSD 4.2             2007-11-01 [OBD]
 498 NetBSD 4.0              2007-12-19 [NBD]
 499 FreeBSD 6.3             2008-01-18 [FBD]
 500 DragonFly 1.12.0        2008-02-26 [DFB]
 501 FreeBSD 7.0             2008-02-27 [FBD]
 502 OpenBSD 4.3             2008-05-01 [OBD]
 503 DragonFly 2.0.0         2008-07-21 [DFB]
 504 OpenBSD 4.4             2008-11-01 [OBD]
 505 FreeBSD 6.4             2008-11-28 [FBD]
 506 FreeBSD 7.1             2009-01-04 [FBD]
 507 DragonFly 2.2.0         2009-02-17 [DFB]
 508 NetBSD 5.0              2009-04-29 [NBD]
 509 OpenBSD 4.5             2009-05-01 [OBD]
 510 FreeBSD 7.2             2009-05-04 [FBD]
 511 DragonFly 2.4.0         2009-09-16 [DFB]
 512 OpenBSD 4.6             2009-10-18 [OBD]
 513 FreeBSD 8.0             2009-11-26 [FBD]
 514
 515 Bibliography
 516 ------------------------
 517
 518 Leffler, Samuel J., Marshall Kirk McKusick, Michael J Karels and John
 519 Quarterman. The Design and Implementation of the 4.3BSD UNIX Operating
 520 System. Reading, Mass. Addison-Wesley, 1989. ISBN 0-201-06196-1
 521
 522 Salus, Peter H. A quarter century of UNIX. Addison-Wesley Publishing
 523 Company, Inc., 1994. ISBN 0-201-54777-5
 524
 525 McKusick, Marshall Kirk, Keith Bostic, Michael J Karels, and John
 526 Quarterman. The Design and Implementation of the 4.4BSD Operating
 527 System. Reading, Mass. Addison-Wesley, 1996. ISBN 0-201-54979-4
 528
 529 McKusick, Marshall Kirk, George Neville-Neil. The Design and
 530 Implementation of the FreeBSD Operating System.
 531 Addison-Wesley Professional, Published: Aug 2, 2004. ISBN 0-201-70245-2
 532
 533 Doug McIlroy. Research Unix Reader.
 534
 535 Michael G. Brown. The Role of BSD in the Development of Unix.
 536 Presented to the Tasmanian Unix Special Interest Group of the
 537 Australian Computer Society, Hobart, August 1993.
 538
 539 Peter H. Salus. Unix at 25. Byte Magazine, October 1994.
 540 URL: http://www.byte.com/art/9410/sec8/art3.htm
 541
 542 Andreas Klemm, Lars Köller. If you're going to San Francisco ...
 543 Die freien BSD-Varianten von Unix. c't April 1997, page 368ff.
 544
 545 BSD Release Announcements collection.
 546 URL: http://www.FreeBSD.org/releases/
 547
 548 BSD Hypertext Man Pages
 549 URL: http://www.FreeBSD.org/cgi/man.cgi
 550
 551 UNIX history graphing project
 552 URL: http://minnie.tuhs.org/Unix_History/index.html
 553
 554 UNIX history
 555 URL: http://www.levenez.com/unix/
 556
 557 James Howard: The BSD Family Tree
 558 URL: http://ezine.daemonnews.org/200104/bsd_family.html
 559 ("what are the differences between FreeBSD, NetBSD, and OpenBSD?")
 560
 561
 562 Acknowledgments
 563 ---------------
 564
 565 Josh Gilliam for suggestions, bug fixes, and finding very old
 566 original BSD announcements from Usenet or tapes.
 567
 568 Steven M. Schultz for providing 2.8BSD, 2.10BSD, 2.11BSD manual pages.
 569
 570 --
 571 Copyright (c) 1997-2007 Wolfram Schneider <wosch@FreeBSD.ORG>
 572 URL: http://cvsweb.freebsd.org/src/share/misc/bsd-family-tree
 573
 574 $FreeBSD: src/share/misc/bsd-family-tree,v 1.135 2009/12/31 19:36:51 maxim Exp $