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               2.7.9BSD
  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  |     V              |      |                 |                       |
 233  |                    |      |                 |                       |
 234 FreeBSD 8 -current    |  NetBSD -current  OpenBSD -current             |
 235  |                    |      |                 |                       |
 236  v                    v      v                 v                       v
 237
 238 Time
 239 ----------------
 240
 241 Time tolerance +/- 6 months, depending on which book/article you read; if it
 242 was the announcement in Usenet or if it was available as tape.
 243
 244 [44B] McKusick, Marshall Kirk, Keith Bostic, Michael J Karels,
 245         and John Quarterman. The Design and Implementation of
 246         the 4.4BSD Operating System.
 247 [APL] Apple website [http://www.apple.com/macosx/]
 248 [BSDI] Berkeley Software Design, Inc.
 249 [DFB] DragonFlyBSD Project, The.
 250 [DOC] README, COPYRIGHT on tape.
 251 [FBD] FreeBSD Project, The.
 252 [KB]  Keith Bostic. BSD2.10 available from Usenix. comp.unix.sources,
 253         Volume 11, Info 4, April, 1987.
 254 [KKK] Mike Karels, Kirk McKusick, and Keith Bostic. tahoe announcement.
 255         comp.bugs.4bsd.ucb-fixes, June 15, 1988.
 256 [KSJ] Michael J. Karels, Carl F. Smith, and William F. Jolitz.
 257         Changes in the Kernel in 2.9BSD. Second Berkeley Software
 258         Distribution UNIX Version 2.9, July, 1983.
 259 [NBD] NetBSD Project, The.
 260 [OBD] OpenBSD Project, The.
 261 [QCU] Salus, Peter H. A quarter century of UNIX.
 262 [SMS] Steven M. Schultz. 2.11BSD, UNIX for the PDP-11.
 263 [USE] Usenet announcement.
 264 [WRS] Wind River Systems, Inc.
 265 [dmr] Dennis Ritchie, via E-Mail
 266
 267 Multics                 1965
 268 UNIX                    Summer 1969
 269                                 DEC PDP-7
 270 First   Edition         1971-11-03 [QCU]
 271                                 DEC PDP-11/20, Assembler
 272 Second  Edition         1972-06-12 [QCU]
 273                                 10 UNIX installations
 274 Third   Edition         1973-02-xx [QCU]
 275                                 Pipes, 16 installations
 276 Fourth  Edition         1973-11-xx [QCU]
 277                                 rewriting in C effected,
 278                                 above 30 installations
 279 Fifth   Edition         1974-06-xx [QCU]
 280                                 above 50 installations
 281 Sixth   Edition         1975-05-xx [QCU]
 282                                 port to DEC Vax
 283 Seventh Edition         1979-01-xx [QCU]
 284                                 first portable UNIX
 285 Eighth  Edition         1985-02-xx [QCU]
 286                                 VAX 11/750, VAX 11/780 [dmr]
 287                                 descended from 4.1c BSD [dmr]
 288                                 descended from 4.1 BSD [44B]
 289                         scooping-out and replacement of the character-device
 290                         and networking part by the streams mechanism
 291
 292 Ninth   Edition         1986-09-xx [QCU]
 293 Tenth   Edition         1989-10-xx [QCU]
 294
 295 1BSD                    late 1977
 296                         1978-03-09 [QCU]
 297                                 PDP-11, Pascal, ex(1)
 298                                 30 free copies of 1BSD sent out
 299                                 35 tapes sold for 50 USD [QCU]
 300 2BSD                    mid 1978 [QCU]
 301                                 75 2BSD tapes shipped
 302 2.7.9BSD                ?? [SMS]
 303 2.8BSD                  1981-07-xx [KSJ]
 304
 305 2.8.1BSD                1982-01-xx [QCU]
 306                                 set of performance improvements
 307 2.9BSD                  1983-07-xx [KSJ]
 308 2.9.1BSD                1983-11-xx
 309 2.9BSD-Seismo           1985-08-xx [SMS]
 310 2.10BSD                 1987-04-xx [KKK]
 311 2.10.1BSD               1989-01-xx [SMS]
 312 2.11BSD                 1992-02-xx [SMS]
 313 2.11BSD rev #430        1999-12-13 [SMS]
 314
 315 32V                     1978-1[01]-xx [QCU]
 316 3BSD                    late 1979 [QCU]
 317                                 virtual memory, page replacement,
 318                                 demand paging
 319 4.0BSD                  1980-10-xx
 320 4.1BSD                  1981-07-08 [DOC]
 321 4.1aBSD                 1982-04-xx
 322                                 alpha release, 100 sites, networking [44B]
 323 4.1bBSD                         internal release, fast filesystem [44B]
 324 4.1cBSD                 late 1982
 325                                 beta release, IPC [44B]
 326 4.2BSD                  1983-09-xx [QCU]
 327                         1983-08-03 [DOC]
 328 4.3BSD                  1986-06-xx [QCU]
 329                         1986-04-05 [KB], [DOC]
 330 4.3BSD Tahoe            1988-06-15 [QCU], [DOC]
 331 4.3BSD NET/1            1988-11-xx [QCU]
 332                         1989-01-01 [DOC]
 333 4.3BSD Reno             1990-06-29 [QCU], [DOC]
 334 4.3BSD NET/2            1991-06-28 [QCU], [DOC]
 335
 336 BSD/386 ALPHA           1991-12-xx [BSDI]
 337                                 first code released to people outside BSDI
 338 386BSD 0.0              1992-02-xx [DOC]
 339 BSD/386 0.3.1           1992-04-xx [BSDI] first ext. beta; B customers
 340 BSD/386 0.3.3           1992-06-xx [BSDI] first CDROM version
 341 386BSD 0.1              1992-07-28 [DOC]
 342 4.4BSD Alpha            1992-07-07
 343 BSD/386 0.9.3           1992-10-xx [BSDI]
 344                                 first external gamma; G customers
 345 BSD/386 0.9.4           1992-12-xx [BSDI]
 346                                 would have been 1.0 except for request
 347                                 for preliminary injunction
 348 BSD/386 1.0             1993-03-xx [BSDI]
 349                                 injunction denied; first official release
 350 NetBSD 0.8              1993-04-20 [NBD]
 351 4.4BSD                  1993-06-01 [USE]
 352 NetBSD 0.9              1993-08-23 [NBD]
 353 FreeBSD 1.0             1993-11-01 [FBD]
 354 FreeBSD 1.0.2           1993-11-14 [FBD]
 355                                 supersedes 1.0 13 days after release.
 356 BSD/386 1.1             1994-02-xx [BSDI]
 357 4.4BSD Lite             1994-03-01 [USE]
 358 FreeBSD 1.1             1994-05-07 [FBD]
 359 FreeBSD 1.1.5           1994-06-30 [FBD]
 360 FreeBSD 1.1.5.1         1994-07-05 [FBD]
 361                                 supersedes 1.1.5 5 days after release.
 362 NetBSD 1.0              1994-10-26 [NBD]
 363 386BSD 1.0              1994-11-12 [USE]
 364 FreeBSD 2.0             1994-11-23 [FBD]
 365 BSD/OS 2.0              1995-01-xx [BSDI] 4.4 lite based
 366 FreeBSD 2.0.5           1995-06-10 [FBD]
 367 BSD/OS 2.0.1            1995-06-xx [BSDI]
 368 4.4BSD Lite Release 2   1995-06-xx [44B]
 369                                 the true final distribution from the CSRG
 370 FreeBSD 2.1.0           1995-11-19 [FBD]
 371 NetBSD 1.1              1995-11-26 [NBD]
 372 BSD/OS 2.1              1996-01-xx [BSDI]
 373 FreeBSD 2.1.5           1996-07-14 [FBD]
 374 NetBSD 1.2              1996-10-04 [NBD]
 375 OpenBSD 2.0             1996-10-18 [OBD]
 376 FreeBSD 2.1.6           1996-11-16 [FBD]
 377 FreeBSD 2.1.6.1         1996-11-25 [FBD] (sendmail security release)
 378 Rhapsody                1997-xx-xx
 379 FreeBSD 2.1.7           1997-02-20 [FBD]
 380 BSD/OS 3.0              1997-02-xx [BSDI] 4.4 lite2 based
 381 FreeBSD 2.2.0           1997-03-16 [FBD]
 382 FreeBSD 2.2.1           1997-03-25 [FBD]
 383 FreeBSD 2.2.2           1997-05-16 [FBD]
 384 NetBSD 1.2.1            1997-05-20 [NBD] (patch release)
 385 OpenBSD 2.1             1997-06-01 [OBD]
 386 FreeBSD 2.2.5           1997-10-22 [FBD]
 387 OpenBSD 2.2             1997-12-01 [OBD]
 388 NetBSD 1.3              1998-01-04 [NBD]
 389 FreeBSD 2.2.6           1998-03-25 [FBD]
 390 NetBSD 1.3.1            1998-03-09 [NBD] (patch release)
 391 BSD/OS 3.1              1998-03-xx [BSDI]
 392 OpenBSD 2.3             1998-05-19 [OBD]
 393 NetBSD 1.3.2            1998-05-29 [NBD] (patch release)
 394 FreeBSD 2.2.7           1998-07-22 [FBD]
 395 BSD/OS 4.0              1998-08-xx [BSDI]
 396                                 2-lock MP support, ELF executables
 397 FreeBSD 3.0             1998-10-16 [FBD]
 398                                 FreeBSD-3.0 is a snapshot from -current,
 399                                 while 3.1 and 3.2 are from 3.x-stable which
 400                                 was branched quite some time after 3.0-release
 401 FreeBSD 2.2.8           1998-11-29 [FBD]
 402 OpenBSD 2.4             1998-12-01 [OBD]
 403 NetBSD 1.3.3            1998-12-23 [NBD] (patch release)
 404 FreeBSD 3.1             1999-02-15 [FBD]
 405 BSD/OS 4.0.1            1999-03-xx [BSDI]
 406 NetBSD 1.4              1999-05-12 [NBD]
 407 FreeBSD 3.2             1999-05-17 [FBD]
 408 OpenBSD 2.5             1999-05-19 [OBD]
 409 NetBSD 1.4.1            1999-08-26 [NBD] (patch release)
 410 FreeBSD 3.3             1999-09-17 [FBD]
 411 OpenBSD 2.6             1999-12-01 [OBD]
 412 FreeBSD 3.4             1999-12-20 [FBD]
 413 BSD/OS 4.1              1999-12-xx [BSDI]
 414 FreeBSD 4.0             2000-03-13 [FBD]
 415 NetBSD 1.4.2            2000-03-19 [NBD] (patch release)
 416 OpenBSD 2.7             2000-06-15 [OBD]
 417 FreeBSD 3.5             2000-06-24 [FBD]
 418 FreeBSD 4.1             2000-07-27 [FBD]
 419 FreeBSD 3.5.1           2000-07-28 [FBD]
 420 FreeBSD 4.1.1           2000-09-25 [FBD] (a network-only patch release)
 421 FreeBSD 4.2             2000-11-21 [FBD]
 422 NetBSD 1.4.3            2000-11-25 [NBD] (patch release)
 423 BSD/OS 4.2              2000-11-29 [BSDI]
 424 OpenBSD 2.8             2000-12-01 [OBD]
 425 NetBSD 1.5              2000-12-06 [NBD]
 426 Mac OS X 10.0           2001-03-24 [APL]
 427 FreeBSD 4.3             2001-04-20 [FBD]
 428 OpenBSD 2.9             2001-06-01 [OBD]
 429 NetBSD 1.5.1            2001-07-11 [NBD] (patch release)
 430 NetBSD 1.5.2            2001-09-13 [NBD] (patch release)
 431 FreeBSD 4.4             2001-09-18 [FBD]
 432 Mac OS X 10.1           2001-09-29 [APL]
 433 OpenBSD 3.0             2001-12-01 [OBD]
 434 FreeBSD 4.5             2002-01-29 [FBD]
 435 BSD/OS 4.3              2002-03-14 [WRS]
 436 OpenBSD 3.1             2002-05-19 [OBD]
 437 FreeBSD 4.6             2002-06-15 [FBD]
 438 NetBSD 1.5.3            2002-07-22 [NBD] (patch release)
 439 FreeBSD 4.6.2           2002-08-15 [FBD] (patch release)
 440 Mac OS X 10.2           2002-08-23 [APL]
 441 NetBSD 1.6              2002-09-14 [NBD]
 442 FreeBSD 4.7             2002-10-08 [FBD]
 443 OpenBSD 3.2             2002-11-01 [OBD]
 444 FreeBSD 5.0             2003-01-17 [FBD]
 445                                 FreeBSD 5.0 is a separate branch off of
 446                                 -current, similar to 3.0.
 447 FreeBSD 4.8             2003-04-03 [FBD]
 448 NetBSD 1.6.1            2003-04-21 [NBD] (patch release)
 449 OpenBSD 3.3             2003-05-01 [OBD]
 450 BSD/OS 5.0              2003-05-?? [WRS]
 451 FreeBSD 5.1             2003-06-09 [FBD]
 452 Mac OS X 10.3           2003-10-24 [APL]
 453 FreeBSD 4.9             2003-10-28 [FBD]
 454 BSD/OS 5.1 ISE          2003-10-?? [WRS] (final version)
 455 OpenBSD 3.4             2003-11-01 [OBD]
 456 FreeBSD 5.2             2004-01-12 [FBD]
 457 FreeBSD 5.2.1           2004-02-22 [FBD] (patch release)
 458 NetBSD 1.6.2            2004-03-01 [NBD] (patch release)
 459 OpenBSD 3.5             2004-04-01 [OBD]
 460 FreeBSD 4.10            2004-05-27 [FBD]
 461 DragonFly 1.0           2004-07-12 [DFB]
 462 OpenBSD 3.6             2004-10-29 [OBD]
 463 FreeBSD 5.3             2004-11-06 [FBD]
 464 NetBSD 2.0              2004-12-09 [NBD]
 465 FreeBSD 4.11            2005-01-25 [FBD]
 466 DragonFly 1.2.0         2005-04-08 [DFB]
 467 NetBSD 2.0.2            2005-04-14 [NBD] (security/critical release)
 468 Mac OS X 10.4           2005-04-29 [APL]
 469 FreeBSD 5.4             2005-05-09 [FBD]
 470 OpenBSD 3.7             2005-05-19 [OBD]
 471 NetBSD 2.0.3            2005-10-31 [NBD] (security/critical release)
 472 OpenBSD 3.8             2005-11-01 [OBD]
 473 FreeBSD 6.0             2005-11-01 [FBD]
 474 NetBSD 2.1              2005-11-02 [NBD]
 475 NetBSD 3.0              2005-12-23 [NBD]
 476 DragonFly 1.4.0         2006-01-08 [DFB]
 477 OpenBSD 3.9             2006-05-01 [OBD]
 478 FreeBSD 6.1             2006-05-08 [FBD]
 479 FreeBSD 5.5             2006-05-25 [FBD]
 480 NetBSD 3.0.1            2006-07-24 [NBD] (security/critical release)
 481 DragonFly 1.6.0         2006-07-24 [DFB]
 482 OpenBSD 4.0             2006-11-01 [OBD]
 483 NetBSD 3.0.2            2006-11-04 [NBD] (security/critical release)
 484 NetBSD 3.1              2006-11-04 [NBD]
 485 FreeBSD 6.2             2007-01-15 [FBD]
 486 DragonFly 1.8.0         2007-01-30 [DFB]
 487 OpenBSD 4.1             2007-05-01 [OBD]
 488 DragonFly 1.10.0        2007-08-06 [DFB]
 489 Mac OS X 10.5           2007-10-26 [APL]
 490 OpenBSD 4.2             2007-11-01 [OBD]
 491 NetBSD 4.0              2007-12-19 [NBD]
 492 FreeBSD 6.3             2008-01-18 [FBD]
 493 DragonFly 1.12.0        2008-02-26 [DFB]
 494 FreeBSD 7.0             2008-02-27 [FBD]
 495 OpenBSD 4.3             2008-05-01 [OBD]
 496 DragonFly 2.0.0         2008-07-21 [DFB]
 497 OpenBSD 4.4             2008-11-01 [OBD]
 498 FreeBSD 6.4             2008-11-28 [FBD]
 499 FreeBSD 7.1             2009-01-04 [FBD]
 500 DragonFly 2.2.0         2009-02-17 [DFB]
 501 NetBSD 5.0              2009-04-29 [NBD]
 502 OpenBSD 4.5             2009-05-01 [OBD]
 503 FreeBSD 7.2             2009-05-04 [FBD]
 504
 505 Bibliography
 506 ------------------------
 507
 508 Leffler, Samuel J., Marshall Kirk McKusick, Michael J Karels and John
 509 Quarterman. The Design and Implementation of the 4.3BSD UNIX Operating
 510 System. Reading, Mass. Addison-Wesley, 1989. ISBN 0-201-06196-1
 511
 512 Salus, Peter H. A quarter century of UNIX. Addison-Wesley Publishing
 513 Company, Inc., 1994. ISBN 0-201-54777-5
 514
 515 McKusick, Marshall Kirk, Keith Bostic, Michael J Karels, and John
 516 Quarterman. The Design and Implementation of the 4.4BSD Operating
 517 System. Reading, Mass. Addison-Wesley, 1996. ISBN 0-201-54979-4
 518
 519 McKusick, Marshall Kirk, George Neville-Neil. The Design and
 520 Implementation of the FreeBSD Operating System.
 521 Addison-Wesley Professional, Published: Aug 2, 2004. ISBN 0-201-70245-2
 522
 523 Doug McIlroy. Research Unix Reader.
 524
 525 Michael G. Brown. The Role of BSD in the Development of Unix.
 526 Presented to the Tasmanian Unix Special Interest Group of the
 527 Australian Computer Society, Hobart, August 1993.
 528
 529 Peter H. Salus. Unix at 25. Byte Magazine, October 1994.
 530 URL: http://www.byte.com/art/9410/sec8/art3.htm
 531
 532 Andreas Klemm, Lars Köller. If you're going to San Francisco ...
 533 Die freien BSD-Varianten von Unix. c't April 1997, page 368ff.
 534
 535 BSD Release Announcements collection.
 536 URL: http://www.de.FreeBSD.org/de/ftp/releases/
 537
 538 BSD Hypertext Man Pages
 539 URL: http://www.FreeBSD.org/cgi/man.cgi
 540
 541 UNIX history graphing project
 542 URL: http://minnie.tuhs.org/Unix_History/index.html
 543
 544 UNIX history
 545 URL: http://www.levenez.com/unix/
 546
 547 James Howard: The BSD Family Tree
 548 URL: http://ezine.daemonnews.org/200104/bsd_family.html
 549 ("what are the differences between FreeBSD, NetBSD, and OpenBSD?")
 550
 551
 552 Acknowledgments
 553 ---------------
 554
 555 Josh Gilliam for suggestions, bug fixes, and finding very old
 556 original BSD announcements from Usenet or tapes.
 557
 558 Steven M. Schultz for providing 2.8BSD, 2.10BSD, 2.11BSD manual pages.
 559
 560 --
 561 Copyright (c) 1997-2007 Wolfram Schneider <wosch@FreeBSD.ORG>
 562 URL: http://cvsweb.freebsd.org/src/share/misc/bsd-family-tree
 563
 564 $FreeBSD: src/share/misc/bsd-family-tree,v 1.129 2009/05/05 20:54:26 maxim Exp $