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  |      v           `-|------|-----------------|---------------------.
 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  |     |              |      |             OpenBSD 4.2                 |
 216  |     |              |   NetBSD 4.0           |                       |
 217  |     V              |      |                 |                       |
 218 FreeBSD 7 -current    |  NetBSD -current  OpenBSD -current             |
 219  |                    |      |                 |                       |
 220  v                    v      v                 v                       v
 221
 222 Time
 223 ----------------
 224
 225 Time tolerance +/- 6 months, depending on which book/article you read; if it
 226 was the announcement in Usenet or if it was available as tape.
 227
 228 [44B] McKusick, Marshall Kirk, Keith Bostic, Michael J Karels,
 229         and John Quarterman. The Design and Implementation of
 230         the 4.4BSD Operating System.
 231 [APL] Apple website [http://www.apple.com/macosx/]
 232 [BSDI] Berkeley Software Design, Inc.
 233 [DFB] DragonFlyBSD Project, The.
 234 [DOC] README, COPYRIGHT on tape.
 235 [FBD] FreeBSD Project, The.
 236 [KB]  Keith Bostic. BSD2.10 available from Usenix. comp.unix.sources,
 237         Volume 11, Info 4, April, 1987.
 238 [KKK] Mike Karels, Kirk McKusick, and Keith Bostic. tahoe announcement.
 239         comp.bugs.4bsd.ucb-fixes, June 15, 1988.
 240 [KSJ] Michael J. Karels, Carl F. Smith, and William F. Jolitz.
 241         Changes in the Kernel in 2.9BSD. Second Berkeley Software
 242         Distribution UNIX Version 2.9, July, 1983.
 243 [NBD] NetBSD Project, The.
 244 [OBD] OpenBSD Project, The.
 245 [QCU] Salus, Peter H. A quarter century of UNIX.
 246 [SMS] Steven M. Schultz. 2.11BSD, UNIX for the PDP-11.
 247 [USE] Usenet announcement.
 248 [WRS] Wind River Systems, Inc.
 249 [dmr] Dennis Ritchie, via E-Mail
 250
 251 Multics                 1965
 252 UNIX                    Summer 1969
 253                                 DEC PDP-7
 254 First   Edition         1971-11-03 [QCU]
 255                                 DEC PDP-11/20, Assembler
 256 Second  Edition         1972-06-12 [QCU]
 257                                 10 UNIX installations
 258 Third   Edition         1973-02-xx [QCU]
 259                                 Pipes, 16 installations
 260 Fourth  Edition         1973-11-xx [QCU]
 261                                 rewriting in C effected,
 262                                 above 30 installations
 263 Fifth   Edition         1974-06-xx [QCU]
 264                                 above 50 installations
 265 Sixth   Edition         1975-05-xx [QCU]
 266                                 port to DEC Vax
 267 Seventh Edition         1979-01-xx [QCU]
 268                                 first portable UNIX
 269 Eighth  Edition         1985-02-xx [QCU]
 270                                 VAX 11/750, VAX 11/780 [dmr]
 271                                 descended from 4.1c BSD [dmr]
 272                                 descended from 4.1 BSD [44B]
 273                         scooping-out and replacement of the character-device
 274                         and networking part by the streams mechanism
 275
 276 Ninth   Edition         1986-09-xx [QCU]
 277 Tenth   Edition         1989-10-xx [QCU]
 278
 279 1BSD                    late 1977
 280                         1978-03-09 [QCU]
 281                                 PDP-11, Pascal, ex(1)
 282                                 30 free copies of 1BSD sent out
 283                                 35 tapes sold for 50 USD [QCU]
 284 2BSD                    mid 1978 [QCU]
 285                                 75 2BSD tapes shipped
 286 2.7.9BSD                ?? [SMS]
 287 2.8BSD                  1981-07-xx [KSJ]
 288
 289 2.8.1BSD                1982-01-xx [QCU]
 290                                 set of performance improvements
 291 2.9BSD                  1983-07-xx [KSJ]
 292 2.9.1BSD                1983-11-xx
 293 2.9BSD-Seismo           1985-08-xx [SMS]
 294 2.10BSD                 1987-04-xx [KKK]
 295 2.10.1BSD               1989-01-xx [SMS]
 296 2.11BSD                 1992-02-xx [SMS]
 297 2.11BSD rev #430        1999-12-13 [SMS]
 298
 299 32V                     1978-1[01]-xx [QCU]
 300 3BSD                    late 1979 [QCU]
 301                                 virtual memory, page replacement,
 302                                 demand paging
 303 4.0BSD                  1980-10-xx
 304 4.1BSD                  1981-07-08 [DOC]
 305 4.1aBSD                 1982-04-xx
 306                                 alpha release, 100 sites, networking [44B]
 307 4.1bBSD                         internal release, fast filesystem [44B]
 308 4.1cBSD                 late 1982
 309                                 beta release, IPC [44B]
 310 4.2BSD                  1983-09-xx [QCU]
 311                         1983-08-03 [DOC]
 312 4.3BSD                  1986-06-xx [QCU]
 313                         1986-04-05 [KB], [DOC]
 314 4.3BSD Tahoe            1988-06-15 [QCU], [DOC]
 315 4.3BSD NET/1            1988-11-xx [QCU]
 316                         1989-01-01 [DOC]
 317 4.3BSD Reno             1990-06-29 [QCU], [DOC]
 318 4.3BSD NET/2            1991-06-28 [QCU], [DOC]
 319
 320 BSD/386 ALPHA           1991-12-xx [BSDI]
 321                                 first code released to people outside BSDI
 322 386BSD 0.0              1992-02-xx [DOC]
 323 BSD/386 0.3.1           1992-04-xx [BSDI] first ext. beta; B customers
 324 BSD/386 0.3.3           1992-06-xx [BSDI] first CDROM version
 325 386BSD 0.1              1992-07-28 [DOC]
 326 4.4BSD Alpha            1992-07-07
 327 BSD/386 0.9.3           1992-10-xx [BSDI]
 328                                 first external gamma; G customers
 329 BSD/386 0.9.4           1992-12-xx [BSDI]
 330                                 would have been 1.0 except for request
 331                                 for preliminary injunction
 332 BSD/386 1.0             1993-03-xx [BSDI]
 333                                 injunction denied; first official release
 334 NetBSD 0.8              1993-04-20 [NBD]
 335 4.4BSD                  1993-06-01 [USE]
 336 NetBSD 0.9              1993-08-23 [NBD]
 337 FreeBSD 1.0             1993-11-01 [FBD]
 338 FreeBSD 1.0.2           1993-11-14 [FBD]
 339                                 supersedes 1.0 13 days after release.
 340 BSD/386 1.1             1994-02-xx [BSDI]
 341 4.4BSD Lite             1994-03-01 [USE]
 342 FreeBSD 1.1             1994-05-07 [FBD]
 343 FreeBSD 1.1.5           1994-06-30 [FBD]
 344 FreeBSD 1.1.5.1         1994-07-05 [FBD]
 345                                 supersedes 1.1.5 5 days after release.
 346 NetBSD 1.0              1994-10-26 [NBD]
 347 386BSD 1.0              1994-11-12 [USE]
 348 FreeBSD 2.0             1994-11-23 [FBD]
 349 BSD/OS 2.0              1995-01-xx [BSDI] 4.4 lite based
 350 FreeBSD 2.0.5           1995-06-10 [FBD]
 351 BSD/OS 2.0.1            1995-06-xx [BSDI]
 352 4.4BSD Lite Release 2   1995-06-xx [44B]
 353                                 the true final distribution from the CSRG
 354 FreeBSD 2.1.0           1995-11-19 [FBD]
 355 NetBSD 1.1              1995-11-26 [NBD]
 356 BSD/OS 2.1              1996-01-xx [BSDI]
 357 FreeBSD 2.1.5           1996-07-14 [FBD]
 358 NetBSD 1.2              1996-10-04 [NBD]
 359 OpenBSD 2.0             1996-10-18 [OBD]
 360 FreeBSD 2.1.6           1996-11-16 [FBD]
 361 FreeBSD 2.1.6.1         1996-11-25 [FBD] (sendmail security release)
 362 Rhapsody                1997-xx-xx
 363 FreeBSD 2.1.7           1997-02-20 [FBD]
 364 BSD/OS 3.0              1997-02-xx [BSDI] 4.4 lite2 based
 365 FreeBSD 2.2.0           1997-03-16 [FBD]
 366 FreeBSD 2.2.1           1997-03-25 [FBD]
 367 FreeBSD 2.2.2           1997-05-16 [FBD]
 368 NetBSD 1.2.1            1997-05-20 [NBD] (patch release)
 369 OpenBSD 2.1             1997-06-01 [OBD]
 370 FreeBSD 2.2.5           1997-10-22 [FBD]
 371 OpenBSD 2.2             1997-12-01 [OBD]
 372 NetBSD 1.3              1998-01-04 [NBD]
 373 FreeBSD 2.2.6           1998-03-25 [FBD]
 374 NetBSD 1.3.1            1998-03-09 [NBD] (patch release)
 375 BSD/OS 3.1              1998-03-xx [BSDI]
 376 OpenBSD 2.3             1998-05-19 [OBD]
 377 NetBSD 1.3.2            1998-05-29 [NBD] (patch release)
 378 FreeBSD 2.2.7           1998-07-22 [FBD]
 379 BSD/OS 4.0              1998-08-xx [BSDI]
 380                                 2-lock MP support, ELF executables
 381 FreeBSD 3.0             1998-10-16 [FBD]
 382                                 FreeBSD-3.0 is a snapshot from -current,
 383                                 while 3.1 and 3.2 are from 3.x-stable which
 384                                 was branched quite some time after 3.0-release
 385 FreeBSD 2.2.8           1998-11-29 [FBD]
 386 OpenBSD 2.4             1998-12-01 [OBD]
 387 NetBSD 1.3.3            1998-12-23 [NBD] (patch release)
 388 FreeBSD 3.1             1999-02-15 [FBD]
 389 BSD/OS 4.0.1            1999-03-xx [BSDI]
 390 NetBSD 1.4              1999-05-12 [NBD]
 391 FreeBSD 3.2             1999-05-17 [FBD]
 392 OpenBSD 2.5             1999-05-19 [OBD]
 393 NetBSD 1.4.1            1999-08-26 [NBD] (patch release)
 394 FreeBSD 3.3             1999-09-17 [FBD]
 395 OpenBSD 2.6             1999-12-01 [OBD]
 396 FreeBSD 3.4             1999-12-20 [FBD]
 397 BSD/OS 4.1              1999-12-xx [BSDI]
 398 FreeBSD 4.0             2000-03-13 [FBD]
 399 NetBSD 1.4.2            2000-03-19 [NBD] (patch release)
 400 OpenBSD 2.7             2000-06-15 [OBD]
 401 FreeBSD 3.5             2000-06-24 [FBD]
 402 FreeBSD 4.1             2000-07-27 [FBD]
 403 FreeBSD 3.5.1           2000-07-28 [FBD]
 404 FreeBSD 4.1.1           2000-09-25 [FBD] (a network-only patch release)
 405 FreeBSD 4.2             2000-11-21 [FBD]
 406 NetBSD 1.4.3            2000-11-25 [NBD] (patch release)
 407 BSD/OS 4.2              2000-11-29 [BSDI]
 408 OpenBSD 2.8             2000-12-01 [OBD]
 409 NetBSD 1.5              2000-12-06 [NBD]
 410 Mac OS X 10.0           2001-03-24 [APL]
 411 FreeBSD 4.3             2001-04-20 [FBD]
 412 OpenBSD 2.9             2001-06-01 [OBD]
 413 NetBSD 1.5.1            2001-07-11 [NBD] (patch release)
 414 NetBSD 1.5.2            2001-09-13 [NBD] (patch release)
 415 FreeBSD 4.4             2001-09-18 [FBD]
 416 Mac OS X 10.1           2001-09-29 [APL]
 417 OpenBSD 3.0             2001-12-01 [OBD]
 418 FreeBSD 4.5             2002-01-29 [FBD]
 419 BSD/OS 4.3              2002-03-14 [WRS]
 420 OpenBSD 3.1             2002-05-19 [OBD]
 421 FreeBSD 4.6             2002-06-15 [FBD]
 422 NetBSD 1.5.3            2002-07-22 [NBD] (patch release)
 423 FreeBSD 4.6.2           2002-08-15 [FBD] (patch release)
 424 Mac OS X 10.2           2002-08-23 [APL]
 425 NetBSD 1.6              2002-09-14 [NBD]
 426 FreeBSD 4.7             2002-10-08 [FBD]
 427 OpenBSD 3.2             2002-11-01 [OBD]
 428 FreeBSD 5.0             2003-01-17 [FBD]
 429                                 FreeBSD 5.0 is a separate branch off of
 430                                 -current, similar to 3.0.
 431 FreeBSD 4.8             2003-04-03 [FBD]
 432 NetBSD 1.6.1            2003-04-21 [NBD] (patch release)
 433 OpenBSD 3.3             2003-05-01 [OBD]
 434 BSD/OS 5.0              2003-05-?? [WRS]
 435 FreeBSD 5.1             2003-06-09 [FBD]
 436 Mac OS X 10.3           2003-10-24 [APL]
 437 FreeBSD 4.9             2003-10-28 [FBD]
 438 BSD/OS 5.1 ISE          2003-10-?? [WRS] (final version)
 439 OpenBSD 3.4             2003-11-01 [OBD]
 440 FreeBSD 5.2             2004-01-12 [FBD]
 441 FreeBSD 5.2.1           2004-02-22 [FBD] (patch release)
 442 NetBSD 1.6.2            2004-03-01 [NBD] (patch release)
 443 OpenBSD 3.5             2004-04-01 [OBD]
 444 FreeBSD 4.10            2004-05-27 [FBD]
 445 DragonFly 1.0           2004-07-12 [DFB]
 446 OpenBSD 3.6             2004-10-29 [OBD]
 447 FreeBSD 5.3             2004-11-06 [FBD]
 448 NetBSD 2.0              2004-12-09 [NBD]
 449 FreeBSD 4.11            2005-01-25 [FBD]
 450 DragonFly 1.2.0         2005-04-08 [DFB]
 451 NetBSD 2.0.2            2005-04-14 [NBD] (security/critical release)
 452 Mac OS X 10.4           2005-04-29 [APL]
 453 FreeBSD 5.4             2005-05-09 [FBD]
 454 OpenBSD 3.7             2005-05-19 [OBD]
 455 NetBSD 2.0.3            2005-10-31 [NBD] (security/critical release)
 456 OpenBSD 3.8             2005-11-01 [OBD]
 457 FreeBSD 6.0             2005-11-01 [FBD]
 458 NetBSD 2.1              2005-11-02 [NBD]
 459 NetBSD 3.0              2005-12-23 [NBD]
 460 DragonFly 1.4.0         2006-01-08 [DFB]
 461 OpenBSD 3.9             2006-05-01 [OBD]
 462 FreeBSD 6.1             2006-05-08 [FBD]
 463 FreeBSD 5.5             2006-05-25 [FBD]
 464 NetBSD 3.0.1            2006-07-24 [NBD] (security/critical release)
 465 DragonFly 1.6.0         2006-07-24 [DFB]
 466 OpenBSD 4.0             2006-11-01 [OBD]
 467 NetBSD 3.0.2            2006-11-04 [NBD] (security/critical release)
 468 NetBSD 3.1              2006-11-04 [NBD]
 469 FreeBSD 6.2             2007-01-15 [FBD]
 470 DragonFly 1.8.0         2007-01-30 [DFB]
 471 OpenBSD 4.1             2007-05-01 [OBD]
 472 DragonFly 1.10.0        2007-08-06 [DFB]
 473 OpenBSD 4.2             2007-11-01 [OBD]
 474 NetBSD 4.0              2007-12-19 [NBD]
 475
 476 Bibliography
 477 ------------------------
 478
 479 Leffler, Samuel J., Marshall Kirk McKusick, Michael J Karels and John
 480 Quarterman. The Design and Implementation of the 4.3BSD UNIX Operating
 481 System. Reading, Mass. Addison-Wesley, 1989. ISBN 0-201-06196-1
 482
 483 Salus, Peter H. A quarter century of UNIX. Addison-Wesley Publishing
 484 Company, Inc., 1994. ISBN 0-201-54777-5
 485
 486 McKusick, Marshall Kirk, Keith Bostic, Michael J Karels, and John
 487 Quarterman. The Design and Implementation of the 4.4BSD Operating
 488 System. Reading, Mass. Addison-Wesley, 1996. ISBN 0-201-54979-4
 489
 490 McKusick, Marshall Kirk, George Neville-Neil. The Design and
 491 Implementation of the FreeBSD Operating System.
 492 Addison-Wesley Professional, Published: Aug 2, 2004. ISBN 0-201-70245-2
 493
 494 Doug McIlroy. Research Unix Reader.
 495
 496 Michael G. Brown. The Role of BSD in the Development of Unix.
 497 Presented to the Tasmanian Unix Special Interest Group of the
 498 Australian Computer Society, Hobart, August 1993.
 499
 500 Peter H. Salus. Unix at 25. Byte Magazine, October 1994.
 501 URL: http://www.byte.com/art/9410/sec8/art3.htm
 502
 503 Andreas Klemm, Lars Köller. If you're going to San Francisco ...
 504 Die freien BSD-Varianten von Unix. c't April 1997, page 368ff.
 505
 506 BSD Release Announcements collection.
 507 URL: http://www.de.FreeBSD.org/de/ftp/releases/
 508
 509 BSD Hypertext Man Pages
 510 URL: http://www.FreeBSD.org/cgi/man.cgi
 511
 512 UNIX history graphing project
 513 URL: http://minnie.tuhs.org/Unix_History/index.html
 514
 515 UNIX history
 516 URL: http://www.levenez.com/unix/
 517
 518 James Howard: The BSD Family Tree
 519 URL: http://ezine.daemonnews.org/200104/bsd_family.html
 520 ("what are the differences between FreeBSD, NetBSD, and OpenBSD?")
 521
 522
 523 Acknowledgments
 524 ---------------
 525
 526 Josh Gilliam for suggestions, bug fixes, and finding very old
 527 original BSD announcements from Usenet or tapes.
 528
 529 Steven M. Schultz for providing 2.8BSD, 2.10BSD, 2.11BSD manual pages.
 530
 531 --
 532 Copyright (c) 1997-2007 Wolfram Schneider <wosch@FreeBSD.ORG>
 533 URL: http://cvsweb.freebsd.org/src/share/misc/bsd-family-tree
 534
 535 $FreeBSD: src/share/misc/bsd-family-tree,v 1.117 2007/12/19 18:19:53 maxim Exp $
 536 $DragonFly: src/share/misc/bsd-family-tree,v 1.14 2007/12/29 21:00:42 swildner Exp $