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  |     V              |      |                 |                       |
 225  |                    |      |                 |                       |
 226 FreeBSD 8 -current    |  NetBSD -current  OpenBSD -current             |
 227  |                    |      |                 |                       |
 228  v                    v      v                 v                       v
 229
 230 Time
 231 ----------------
 232
 233 Time tolerance +/- 6 months, depending on which book/article you read; if it
 234 was the announcement in Usenet or if it was available as tape.
 235
 236 [44B] McKusick, Marshall Kirk, Keith Bostic, Michael J Karels,
 237         and John Quarterman. The Design and Implementation of
 238         the 4.4BSD Operating System.
 239 [APL] Apple website [http://www.apple.com/macosx/]
 240 [BSDI] Berkeley Software Design, Inc.
 241 [DFB] DragonFlyBSD Project, The.
 242 [DOC] README, COPYRIGHT on tape.
 243 [FBD] FreeBSD Project, The.
 244 [KB]  Keith Bostic. BSD2.10 available from Usenix. comp.unix.sources,
 245         Volume 11, Info 4, April, 1987.
 246 [KKK] Mike Karels, Kirk McKusick, and Keith Bostic. tahoe announcement.
 247         comp.bugs.4bsd.ucb-fixes, June 15, 1988.
 248 [KSJ] Michael J. Karels, Carl F. Smith, and William F. Jolitz.
 249         Changes in the Kernel in 2.9BSD. Second Berkeley Software
 250         Distribution UNIX Version 2.9, July, 1983.
 251 [NBD] NetBSD Project, The.
 252 [OBD] OpenBSD Project, The.
 253 [QCU] Salus, Peter H. A quarter century of UNIX.
 254 [SMS] Steven M. Schultz. 2.11BSD, UNIX for the PDP-11.
 255 [USE] Usenet announcement.
 256 [WRS] Wind River Systems, Inc.
 257 [dmr] Dennis Ritchie, via E-Mail
 258
 259 Multics                 1965
 260 UNIX                    Summer 1969
 261                                 DEC PDP-7
 262 First   Edition         1971-11-03 [QCU]
 263                                 DEC PDP-11/20, Assembler
 264 Second  Edition         1972-06-12 [QCU]
 265                                 10 UNIX installations
 266 Third   Edition         1973-02-xx [QCU]
 267                                 Pipes, 16 installations
 268 Fourth  Edition         1973-11-xx [QCU]
 269                                 rewriting in C effected,
 270                                 above 30 installations
 271 Fifth   Edition         1974-06-xx [QCU]
 272                                 above 50 installations
 273 Sixth   Edition         1975-05-xx [QCU]
 274                                 port to DEC Vax
 275 Seventh Edition         1979-01-xx [QCU]
 276                                 first portable UNIX
 277 Eighth  Edition         1985-02-xx [QCU]
 278                                 VAX 11/750, VAX 11/780 [dmr]
 279                                 descended from 4.1c BSD [dmr]
 280                                 descended from 4.1 BSD [44B]
 281                         scooping-out and replacement of the character-device
 282                         and networking part by the streams mechanism
 283
 284 Ninth   Edition         1986-09-xx [QCU]
 285 Tenth   Edition         1989-10-xx [QCU]
 286
 287 1BSD                    late 1977
 288                         1978-03-09 [QCU]
 289                                 PDP-11, Pascal, ex(1)
 290                                 30 free copies of 1BSD sent out
 291                                 35 tapes sold for 50 USD [QCU]
 292 2BSD                    mid 1978 [QCU]
 293                                 75 2BSD tapes shipped
 294 2.7.9BSD                ?? [SMS]
 295 2.8BSD                  1981-07-xx [KSJ]
 296
 297 2.8.1BSD                1982-01-xx [QCU]
 298                                 set of performance improvements
 299 2.9BSD                  1983-07-xx [KSJ]
 300 2.9.1BSD                1983-11-xx
 301 2.9BSD-Seismo           1985-08-xx [SMS]
 302 2.10BSD                 1987-04-xx [KKK]
 303 2.10.1BSD               1989-01-xx [SMS]
 304 2.11BSD                 1992-02-xx [SMS]
 305 2.11BSD rev #430        1999-12-13 [SMS]
 306
 307 32V                     1978-1[01]-xx [QCU]
 308 3BSD                    late 1979 [QCU]
 309                                 virtual memory, page replacement,
 310                                 demand paging
 311 4.0BSD                  1980-10-xx
 312 4.1BSD                  1981-07-08 [DOC]
 313 4.1aBSD                 1982-04-xx
 314                                 alpha release, 100 sites, networking [44B]
 315 4.1bBSD                         internal release, fast filesystem [44B]
 316 4.1cBSD                 late 1982
 317                                 beta release, IPC [44B]
 318 4.2BSD                  1983-09-xx [QCU]
 319                         1983-08-03 [DOC]
 320 4.3BSD                  1986-06-xx [QCU]
 321                         1986-04-05 [KB], [DOC]
 322 4.3BSD Tahoe            1988-06-15 [QCU], [DOC]
 323 4.3BSD NET/1            1988-11-xx [QCU]
 324                         1989-01-01 [DOC]
 325 4.3BSD Reno             1990-06-29 [QCU], [DOC]
 326 4.3BSD NET/2            1991-06-28 [QCU], [DOC]
 327
 328 BSD/386 ALPHA           1991-12-xx [BSDI]
 329                                 first code released to people outside BSDI
 330 386BSD 0.0              1992-02-xx [DOC]
 331 BSD/386 0.3.1           1992-04-xx [BSDI] first ext. beta; B customers
 332 BSD/386 0.3.3           1992-06-xx [BSDI] first CDROM version
 333 386BSD 0.1              1992-07-28 [DOC]
 334 4.4BSD Alpha            1992-07-07
 335 BSD/386 0.9.3           1992-10-xx [BSDI]
 336                                 first external gamma; G customers
 337 BSD/386 0.9.4           1992-12-xx [BSDI]
 338                                 would have been 1.0 except for request
 339                                 for preliminary injunction
 340 BSD/386 1.0             1993-03-xx [BSDI]
 341                                 injunction denied; first official release
 342 NetBSD 0.8              1993-04-20 [NBD]
 343 4.4BSD                  1993-06-01 [USE]
 344 NetBSD 0.9              1993-08-23 [NBD]
 345 FreeBSD 1.0             1993-11-01 [FBD]
 346 FreeBSD 1.0.2           1993-11-14 [FBD]
 347                                 supersedes 1.0 13 days after release.
 348 BSD/386 1.1             1994-02-xx [BSDI]
 349 4.4BSD Lite             1994-03-01 [USE]
 350 FreeBSD 1.1             1994-05-07 [FBD]
 351 FreeBSD 1.1.5           1994-06-30 [FBD]
 352 FreeBSD 1.1.5.1         1994-07-05 [FBD]
 353                                 supersedes 1.1.5 5 days after release.
 354 NetBSD 1.0              1994-10-26 [NBD]
 355 386BSD 1.0              1994-11-12 [USE]
 356 FreeBSD 2.0             1994-11-23 [FBD]
 357 BSD/OS 2.0              1995-01-xx [BSDI] 4.4 lite based
 358 FreeBSD 2.0.5           1995-06-10 [FBD]
 359 BSD/OS 2.0.1            1995-06-xx [BSDI]
 360 4.4BSD Lite Release 2   1995-06-xx [44B]
 361                                 the true final distribution from the CSRG
 362 FreeBSD 2.1.0           1995-11-19 [FBD]
 363 NetBSD 1.1              1995-11-26 [NBD]
 364 BSD/OS 2.1              1996-01-xx [BSDI]
 365 FreeBSD 2.1.5           1996-07-14 [FBD]
 366 NetBSD 1.2              1996-10-04 [NBD]
 367 OpenBSD 2.0             1996-10-18 [OBD]
 368 FreeBSD 2.1.6           1996-11-16 [FBD]
 369 FreeBSD 2.1.6.1         1996-11-25 [FBD] (sendmail security release)
 370 Rhapsody                1997-xx-xx
 371 FreeBSD 2.1.7           1997-02-20 [FBD]
 372 BSD/OS 3.0              1997-02-xx [BSDI] 4.4 lite2 based
 373 FreeBSD 2.2.0           1997-03-16 [FBD]
 374 FreeBSD 2.2.1           1997-03-25 [FBD]
 375 FreeBSD 2.2.2           1997-05-16 [FBD]
 376 NetBSD 1.2.1            1997-05-20 [NBD] (patch release)
 377 OpenBSD 2.1             1997-06-01 [OBD]
 378 FreeBSD 2.2.5           1997-10-22 [FBD]
 379 OpenBSD 2.2             1997-12-01 [OBD]
 380 NetBSD 1.3              1998-01-04 [NBD]
 381 FreeBSD 2.2.6           1998-03-25 [FBD]
 382 NetBSD 1.3.1            1998-03-09 [NBD] (patch release)
 383 BSD/OS 3.1              1998-03-xx [BSDI]
 384 OpenBSD 2.3             1998-05-19 [OBD]
 385 NetBSD 1.3.2            1998-05-29 [NBD] (patch release)
 386 FreeBSD 2.2.7           1998-07-22 [FBD]
 387 BSD/OS 4.0              1998-08-xx [BSDI]
 388                                 2-lock MP support, ELF executables
 389 FreeBSD 3.0             1998-10-16 [FBD]
 390                                 FreeBSD-3.0 is a snapshot from -current,
 391                                 while 3.1 and 3.2 are from 3.x-stable which
 392                                 was branched quite some time after 3.0-release
 393 FreeBSD 2.2.8           1998-11-29 [FBD]
 394 OpenBSD 2.4             1998-12-01 [OBD]
 395 NetBSD 1.3.3            1998-12-23 [NBD] (patch release)
 396 FreeBSD 3.1             1999-02-15 [FBD]
 397 BSD/OS 4.0.1            1999-03-xx [BSDI]
 398 NetBSD 1.4              1999-05-12 [NBD]
 399 FreeBSD 3.2             1999-05-17 [FBD]
 400 OpenBSD 2.5             1999-05-19 [OBD]
 401 NetBSD 1.4.1            1999-08-26 [NBD] (patch release)
 402 FreeBSD 3.3             1999-09-17 [FBD]
 403 OpenBSD 2.6             1999-12-01 [OBD]
 404 FreeBSD 3.4             1999-12-20 [FBD]
 405 BSD/OS 4.1              1999-12-xx [BSDI]
 406 FreeBSD 4.0             2000-03-13 [FBD]
 407 NetBSD 1.4.2            2000-03-19 [NBD] (patch release)
 408 OpenBSD 2.7             2000-06-15 [OBD]
 409 FreeBSD 3.5             2000-06-24 [FBD]
 410 FreeBSD 4.1             2000-07-27 [FBD]
 411 FreeBSD 3.5.1           2000-07-28 [FBD]
 412 FreeBSD 4.1.1           2000-09-25 [FBD] (a network-only patch release)
 413 FreeBSD 4.2             2000-11-21 [FBD]
 414 NetBSD 1.4.3            2000-11-25 [NBD] (patch release)
 415 BSD/OS 4.2              2000-11-29 [BSDI]
 416 OpenBSD 2.8             2000-12-01 [OBD]
 417 NetBSD 1.5              2000-12-06 [NBD]
 418 Mac OS X 10.0           2001-03-24 [APL]
 419 FreeBSD 4.3             2001-04-20 [FBD]
 420 OpenBSD 2.9             2001-06-01 [OBD]
 421 NetBSD 1.5.1            2001-07-11 [NBD] (patch release)
 422 NetBSD 1.5.2            2001-09-13 [NBD] (patch release)
 423 FreeBSD 4.4             2001-09-18 [FBD]
 424 Mac OS X 10.1           2001-09-29 [APL]
 425 OpenBSD 3.0             2001-12-01 [OBD]
 426 FreeBSD 4.5             2002-01-29 [FBD]
 427 BSD/OS 4.3              2002-03-14 [WRS]
 428 OpenBSD 3.1             2002-05-19 [OBD]
 429 FreeBSD 4.6             2002-06-15 [FBD]
 430 NetBSD 1.5.3            2002-07-22 [NBD] (patch release)
 431 FreeBSD 4.6.2           2002-08-15 [FBD] (patch release)
 432 Mac OS X 10.2           2002-08-23 [APL]
 433 NetBSD 1.6              2002-09-14 [NBD]
 434 FreeBSD 4.7             2002-10-08 [FBD]
 435 OpenBSD 3.2             2002-11-01 [OBD]
 436 FreeBSD 5.0             2003-01-17 [FBD]
 437                                 FreeBSD 5.0 is a separate branch off of
 438                                 -current, similar to 3.0.
 439 FreeBSD 4.8             2003-04-03 [FBD]
 440 NetBSD 1.6.1            2003-04-21 [NBD] (patch release)
 441 OpenBSD 3.3             2003-05-01 [OBD]
 442 BSD/OS 5.0              2003-05-?? [WRS]
 443 FreeBSD 5.1             2003-06-09 [FBD]
 444 Mac OS X 10.3           2003-10-24 [APL]
 445 FreeBSD 4.9             2003-10-28 [FBD]
 446 BSD/OS 5.1 ISE          2003-10-?? [WRS] (final version)
 447 OpenBSD 3.4             2003-11-01 [OBD]
 448 FreeBSD 5.2             2004-01-12 [FBD]
 449 FreeBSD 5.2.1           2004-02-22 [FBD] (patch release)
 450 NetBSD 1.6.2            2004-03-01 [NBD] (patch release)
 451 OpenBSD 3.5             2004-04-01 [OBD]
 452 FreeBSD 4.10            2004-05-27 [FBD]
 453 DragonFly 1.0           2004-07-12 [DFB]
 454 OpenBSD 3.6             2004-10-29 [OBD]
 455 FreeBSD 5.3             2004-11-06 [FBD]
 456 NetBSD 2.0              2004-12-09 [NBD]
 457 FreeBSD 4.11            2005-01-25 [FBD]
 458 DragonFly 1.2.0         2005-04-08 [DFB]
 459 NetBSD 2.0.2            2005-04-14 [NBD] (security/critical release)
 460 Mac OS X 10.4           2005-04-29 [APL]
 461 FreeBSD 5.4             2005-05-09 [FBD]
 462 OpenBSD 3.7             2005-05-19 [OBD]
 463 NetBSD 2.0.3            2005-10-31 [NBD] (security/critical release)
 464 OpenBSD 3.8             2005-11-01 [OBD]
 465 FreeBSD 6.0             2005-11-01 [FBD]
 466 NetBSD 2.1              2005-11-02 [NBD]
 467 NetBSD 3.0              2005-12-23 [NBD]
 468 DragonFly 1.4.0         2006-01-08 [DFB]
 469 OpenBSD 3.9             2006-05-01 [OBD]
 470 FreeBSD 6.1             2006-05-08 [FBD]
 471 FreeBSD 5.5             2006-05-25 [FBD]
 472 NetBSD 3.0.1            2006-07-24 [NBD] (security/critical release)
 473 DragonFly 1.6.0         2006-07-24 [DFB]
 474 OpenBSD 4.0             2006-11-01 [OBD]
 475 NetBSD 3.0.2            2006-11-04 [NBD] (security/critical release)
 476 NetBSD 3.1              2006-11-04 [NBD]
 477 FreeBSD 6.2             2007-01-15 [FBD]
 478 DragonFly 1.8.0         2007-01-30 [DFB]
 479 OpenBSD 4.1             2007-05-01 [OBD]
 480 DragonFly 1.10.0        2007-08-06 [DFB]
 481 Mac OS X 10.5           2007-10-26 [APL]
 482 OpenBSD 4.2             2007-11-01 [OBD]
 483 NetBSD 4.0              2007-12-19 [NBD]
 484 FreeBSD 6.3             2008-01-18 [FBD]
 485 DragonFly 1.12.0        2008-02-26 [DFB]
 486 FreeBSD 7.0             2008-02-27 [FBD]
 487 OpenBSD 4.3             2008-05-01 [OBD]
 488
 489 Bibliography
 490 ------------------------
 491
 492 Leffler, Samuel J., Marshall Kirk McKusick, Michael J Karels and John
 493 Quarterman. The Design and Implementation of the 4.3BSD UNIX Operating
 494 System. Reading, Mass. Addison-Wesley, 1989. ISBN 0-201-06196-1
 495
 496 Salus, Peter H. A quarter century of UNIX. Addison-Wesley Publishing
 497 Company, Inc., 1994. ISBN 0-201-54777-5
 498
 499 McKusick, Marshall Kirk, Keith Bostic, Michael J Karels, and John
 500 Quarterman. The Design and Implementation of the 4.4BSD Operating
 501 System. Reading, Mass. Addison-Wesley, 1996. ISBN 0-201-54979-4
 502
 503 McKusick, Marshall Kirk, George Neville-Neil. The Design and
 504 Implementation of the FreeBSD Operating System.
 505 Addison-Wesley Professional, Published: Aug 2, 2004. ISBN 0-201-70245-2
 506
 507 Doug McIlroy. Research Unix Reader.
 508
 509 Michael G. Brown. The Role of BSD in the Development of Unix.
 510 Presented to the Tasmanian Unix Special Interest Group of the
 511 Australian Computer Society, Hobart, August 1993.
 512
 513 Peter H. Salus. Unix at 25. Byte Magazine, October 1994.
 514 URL: http://www.byte.com/art/9410/sec8/art3.htm
 515
 516 Andreas Klemm, Lars Köller. If you're going to San Francisco ...
 517 Die freien BSD-Varianten von Unix. c't April 1997, page 368ff.
 518
 519 BSD Release Announcements collection.
 520 URL: http://www.de.FreeBSD.org/de/ftp/releases/
 521
 522 BSD Hypertext Man Pages
 523 URL: http://www.FreeBSD.org/cgi/man.cgi
 524
 525 UNIX history graphing project
 526 URL: http://minnie.tuhs.org/Unix_History/index.html
 527
 528 UNIX history
 529 URL: http://www.levenez.com/unix/
 530
 531 James Howard: The BSD Family Tree
 532 URL: http://ezine.daemonnews.org/200104/bsd_family.html
 533 ("what are the differences between FreeBSD, NetBSD, and OpenBSD?")
 534
 535
 536 Acknowledgments
 537 ---------------
 538
 539 Josh Gilliam for suggestions, bug fixes, and finding very old
 540 original BSD announcements from Usenet or tapes.
 541
 542 Steven M. Schultz for providing 2.8BSD, 2.10BSD, 2.11BSD manual pages.
 543
 544 --
 545 Copyright (c) 1997-2007 Wolfram Schneider <wosch@FreeBSD.ORG>
 546 URL: http://cvsweb.freebsd.org/src/share/misc/bsd-family-tree
 547
 548 $FreeBSD: src/share/misc/bsd-family-tree,v 1.120 2008/05/01 09:52:34 maxim Exp $
 549 $DragonFly: src/share/misc/bsd-family-tree,v 1.17 2008/05/01 12:27:18 swildner Exp $