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  |     V              |      |                 |                       |
 231  |                    |      |                 |                       |
 232 FreeBSD 8 -current    |  NetBSD -current  OpenBSD -current             |
 233  |                    |      |                 |                       |
 234  v                    v      v                 v                       v
 235
 236 Time
 237 ----------------
 238
 239 Time tolerance +/- 6 months, depending on which book/article you read; if it
 240 was the announcement in Usenet or if it was available as tape.
 241
 242 [44B] McKusick, Marshall Kirk, Keith Bostic, Michael J Karels,
 243         and John Quarterman. The Design and Implementation of
 244         the 4.4BSD Operating System.
 245 [APL] Apple website [http://www.apple.com/macosx/]
 246 [BSDI] Berkeley Software Design, Inc.
 247 [DFB] DragonFlyBSD Project, The.
 248 [DOC] README, COPYRIGHT on tape.
 249 [FBD] FreeBSD Project, The.
 250 [KB]  Keith Bostic. BSD2.10 available from Usenix. comp.unix.sources,
 251         Volume 11, Info 4, April, 1987.
 252 [KKK] Mike Karels, Kirk McKusick, and Keith Bostic. tahoe announcement.
 253         comp.bugs.4bsd.ucb-fixes, June 15, 1988.
 254 [KSJ] Michael J. Karels, Carl F. Smith, and William F. Jolitz.
 255         Changes in the Kernel in 2.9BSD. Second Berkeley Software
 256         Distribution UNIX Version 2.9, July, 1983.
 257 [NBD] NetBSD Project, The.
 258 [OBD] OpenBSD Project, The.
 259 [QCU] Salus, Peter H. A quarter century of UNIX.
 260 [SMS] Steven M. Schultz. 2.11BSD, UNIX for the PDP-11.
 261 [USE] Usenet announcement.
 262 [WRS] Wind River Systems, Inc.
 263 [dmr] Dennis Ritchie, via E-Mail
 264
 265 Multics                 1965
 266 UNIX                    Summer 1969
 267                                 DEC PDP-7
 268 First   Edition         1971-11-03 [QCU]
 269                                 DEC PDP-11/20, Assembler
 270 Second  Edition         1972-06-12 [QCU]
 271                                 10 UNIX installations
 272 Third   Edition         1973-02-xx [QCU]
 273                                 Pipes, 16 installations
 274 Fourth  Edition         1973-11-xx [QCU]
 275                                 rewriting in C effected,
 276                                 above 30 installations
 277 Fifth   Edition         1974-06-xx [QCU]
 278                                 above 50 installations
 279 Sixth   Edition         1975-05-xx [QCU]
 280                                 port to DEC Vax
 281 Seventh Edition         1979-01-xx [QCU]
 282                                 first portable UNIX
 283 Eighth  Edition         1985-02-xx [QCU]
 284                                 VAX 11/750, VAX 11/780 [dmr]
 285                                 descended from 4.1c BSD [dmr]
 286                                 descended from 4.1 BSD [44B]
 287                         scooping-out and replacement of the character-device
 288                         and networking part by the streams mechanism
 289
 290 Ninth   Edition         1986-09-xx [QCU]
 291 Tenth   Edition         1989-10-xx [QCU]
 292
 293 1BSD                    late 1977
 294                         1978-03-09 [QCU]
 295                                 PDP-11, Pascal, ex(1)
 296                                 30 free copies of 1BSD sent out
 297                                 35 tapes sold for 50 USD [QCU]
 298 2BSD                    mid 1978 [QCU]
 299                                 75 2BSD tapes shipped
 300 2.7.9BSD                ?? [SMS]
 301 2.8BSD                  1981-07-xx [KSJ]
 302
 303 2.8.1BSD                1982-01-xx [QCU]
 304                                 set of performance improvements
 305 2.9BSD                  1983-07-xx [KSJ]
 306 2.9.1BSD                1983-11-xx
 307 2.9BSD-Seismo           1985-08-xx [SMS]
 308 2.10BSD                 1987-04-xx [KKK]
 309 2.10.1BSD               1989-01-xx [SMS]
 310 2.11BSD                 1992-02-xx [SMS]
 311 2.11BSD rev #430        1999-12-13 [SMS]
 312
 313 32V                     1978-1[01]-xx [QCU]
 314 3BSD                    late 1979 [QCU]
 315                                 virtual memory, page replacement,
 316                                 demand paging
 317 4.0BSD                  1980-10-xx
 318 4.1BSD                  1981-07-08 [DOC]
 319 4.1aBSD                 1982-04-xx
 320                                 alpha release, 100 sites, networking [44B]
 321 4.1bBSD                         internal release, fast filesystem [44B]
 322 4.1cBSD                 late 1982
 323                                 beta release, IPC [44B]
 324 4.2BSD                  1983-09-xx [QCU]
 325                         1983-08-03 [DOC]
 326 4.3BSD                  1986-06-xx [QCU]
 327                         1986-04-05 [KB], [DOC]
 328 4.3BSD Tahoe            1988-06-15 [QCU], [DOC]
 329 4.3BSD NET/1            1988-11-xx [QCU]
 330                         1989-01-01 [DOC]
 331 4.3BSD Reno             1990-06-29 [QCU], [DOC]
 332 4.3BSD NET/2            1991-06-28 [QCU], [DOC]
 333
 334 BSD/386 ALPHA           1991-12-xx [BSDI]
 335                                 first code released to people outside BSDI
 336 386BSD 0.0              1992-02-xx [DOC]
 337 BSD/386 0.3.1           1992-04-xx [BSDI] first ext. beta; B customers
 338 BSD/386 0.3.3           1992-06-xx [BSDI] first CDROM version
 339 386BSD 0.1              1992-07-28 [DOC]
 340 4.4BSD Alpha            1992-07-07
 341 BSD/386 0.9.3           1992-10-xx [BSDI]
 342                                 first external gamma; G customers
 343 BSD/386 0.9.4           1992-12-xx [BSDI]
 344                                 would have been 1.0 except for request
 345                                 for preliminary injunction
 346 BSD/386 1.0             1993-03-xx [BSDI]
 347                                 injunction denied; first official release
 348 NetBSD 0.8              1993-04-20 [NBD]
 349 4.4BSD                  1993-06-01 [USE]
 350 NetBSD 0.9              1993-08-23 [NBD]
 351 FreeBSD 1.0             1993-11-01 [FBD]
 352 FreeBSD 1.0.2           1993-11-14 [FBD]
 353                                 supersedes 1.0 13 days after release.
 354 BSD/386 1.1             1994-02-xx [BSDI]
 355 4.4BSD Lite             1994-03-01 [USE]
 356 FreeBSD 1.1             1994-05-07 [FBD]
 357 FreeBSD 1.1.5           1994-06-30 [FBD]
 358 FreeBSD 1.1.5.1         1994-07-05 [FBD]
 359                                 supersedes 1.1.5 5 days after release.
 360 NetBSD 1.0              1994-10-26 [NBD]
 361 386BSD 1.0              1994-11-12 [USE]
 362 FreeBSD 2.0             1994-11-23 [FBD]
 363 BSD/OS 2.0              1995-01-xx [BSDI] 4.4 lite based
 364 FreeBSD 2.0.5           1995-06-10 [FBD]
 365 BSD/OS 2.0.1            1995-06-xx [BSDI]
 366 4.4BSD Lite Release 2   1995-06-xx [44B]
 367                                 the true final distribution from the CSRG
 368 FreeBSD 2.1.0           1995-11-19 [FBD]
 369 NetBSD 1.1              1995-11-26 [NBD]
 370 BSD/OS 2.1              1996-01-xx [BSDI]
 371 FreeBSD 2.1.5           1996-07-14 [FBD]
 372 NetBSD 1.2              1996-10-04 [NBD]
 373 OpenBSD 2.0             1996-10-18 [OBD]
 374 FreeBSD 2.1.6           1996-11-16 [FBD]
 375 FreeBSD 2.1.6.1         1996-11-25 [FBD] (sendmail security release)
 376 Rhapsody                1997-xx-xx
 377 FreeBSD 2.1.7           1997-02-20 [FBD]
 378 BSD/OS 3.0              1997-02-xx [BSDI] 4.4 lite2 based
 379 FreeBSD 2.2.0           1997-03-16 [FBD]
 380 FreeBSD 2.2.1           1997-03-25 [FBD]
 381 FreeBSD 2.2.2           1997-05-16 [FBD]
 382 NetBSD 1.2.1            1997-05-20 [NBD] (patch release)
 383 OpenBSD 2.1             1997-06-01 [OBD]
 384 FreeBSD 2.2.5           1997-10-22 [FBD]
 385 OpenBSD 2.2             1997-12-01 [OBD]
 386 NetBSD 1.3              1998-01-04 [NBD]
 387 FreeBSD 2.2.6           1998-03-25 [FBD]
 388 NetBSD 1.3.1            1998-03-09 [NBD] (patch release)
 389 BSD/OS 3.1              1998-03-xx [BSDI]
 390 OpenBSD 2.3             1998-05-19 [OBD]
 391 NetBSD 1.3.2            1998-05-29 [NBD] (patch release)
 392 FreeBSD 2.2.7           1998-07-22 [FBD]
 393 BSD/OS 4.0              1998-08-xx [BSDI]
 394                                 2-lock MP support, ELF executables
 395 FreeBSD 3.0             1998-10-16 [FBD]
 396                                 FreeBSD-3.0 is a snapshot from -current,
 397                                 while 3.1 and 3.2 are from 3.x-stable which
 398                                 was branched quite some time after 3.0-release
 399 FreeBSD 2.2.8           1998-11-29 [FBD]
 400 OpenBSD 2.4             1998-12-01 [OBD]
 401 NetBSD 1.3.3            1998-12-23 [NBD] (patch release)
 402 FreeBSD 3.1             1999-02-15 [FBD]
 403 BSD/OS 4.0.1            1999-03-xx [BSDI]
 404 NetBSD 1.4              1999-05-12 [NBD]
 405 FreeBSD 3.2             1999-05-17 [FBD]
 406 OpenBSD 2.5             1999-05-19 [OBD]
 407 NetBSD 1.4.1            1999-08-26 [NBD] (patch release)
 408 FreeBSD 3.3             1999-09-17 [FBD]
 409 OpenBSD 2.6             1999-12-01 [OBD]
 410 FreeBSD 3.4             1999-12-20 [FBD]
 411 BSD/OS 4.1              1999-12-xx [BSDI]
 412 FreeBSD 4.0             2000-03-13 [FBD]
 413 NetBSD 1.4.2            2000-03-19 [NBD] (patch release)
 414 OpenBSD 2.7             2000-06-15 [OBD]
 415 FreeBSD 3.5             2000-06-24 [FBD]
 416 FreeBSD 4.1             2000-07-27 [FBD]
 417 FreeBSD 3.5.1           2000-07-28 [FBD]
 418 FreeBSD 4.1.1           2000-09-25 [FBD] (a network-only patch release)
 419 FreeBSD 4.2             2000-11-21 [FBD]
 420 NetBSD 1.4.3            2000-11-25 [NBD] (patch release)
 421 BSD/OS 4.2              2000-11-29 [BSDI]
 422 OpenBSD 2.8             2000-12-01 [OBD]
 423 NetBSD 1.5              2000-12-06 [NBD]
 424 Mac OS X 10.0           2001-03-24 [APL]
 425 FreeBSD 4.3             2001-04-20 [FBD]
 426 OpenBSD 2.9             2001-06-01 [OBD]
 427 NetBSD 1.5.1            2001-07-11 [NBD] (patch release)
 428 NetBSD 1.5.2            2001-09-13 [NBD] (patch release)
 429 FreeBSD 4.4             2001-09-18 [FBD]
 430 Mac OS X 10.1           2001-09-29 [APL]
 431 OpenBSD 3.0             2001-12-01 [OBD]
 432 FreeBSD 4.5             2002-01-29 [FBD]
 433 BSD/OS 4.3              2002-03-14 [WRS]
 434 OpenBSD 3.1             2002-05-19 [OBD]
 435 FreeBSD 4.6             2002-06-15 [FBD]
 436 NetBSD 1.5.3            2002-07-22 [NBD] (patch release)
 437 FreeBSD 4.6.2           2002-08-15 [FBD] (patch release)
 438 Mac OS X 10.2           2002-08-23 [APL]
 439 NetBSD 1.6              2002-09-14 [NBD]
 440 FreeBSD 4.7             2002-10-08 [FBD]
 441 OpenBSD 3.2             2002-11-01 [OBD]
 442 FreeBSD 5.0             2003-01-17 [FBD]
 443                                 FreeBSD 5.0 is a separate branch off of
 444                                 -current, similar to 3.0.
 445 FreeBSD 4.8             2003-04-03 [FBD]
 446 NetBSD 1.6.1            2003-04-21 [NBD] (patch release)
 447 OpenBSD 3.3             2003-05-01 [OBD]
 448 BSD/OS 5.0              2003-05-?? [WRS]
 449 FreeBSD 5.1             2003-06-09 [FBD]
 450 Mac OS X 10.3           2003-10-24 [APL]
 451 FreeBSD 4.9             2003-10-28 [FBD]
 452 BSD/OS 5.1 ISE          2003-10-?? [WRS] (final version)
 453 OpenBSD 3.4             2003-11-01 [OBD]
 454 FreeBSD 5.2             2004-01-12 [FBD]
 455 FreeBSD 5.2.1           2004-02-22 [FBD] (patch release)
 456 NetBSD 1.6.2            2004-03-01 [NBD] (patch release)
 457 OpenBSD 3.5             2004-04-01 [OBD]
 458 FreeBSD 4.10            2004-05-27 [FBD]
 459 DragonFly 1.0           2004-07-12 [DFB]
 460 OpenBSD 3.6             2004-10-29 [OBD]
 461 FreeBSD 5.3             2004-11-06 [FBD]
 462 NetBSD 2.0              2004-12-09 [NBD]
 463 FreeBSD 4.11            2005-01-25 [FBD]
 464 DragonFly 1.2.0         2005-04-08 [DFB]
 465 NetBSD 2.0.2            2005-04-14 [NBD] (security/critical release)
 466 Mac OS X 10.4           2005-04-29 [APL]
 467 FreeBSD 5.4             2005-05-09 [FBD]
 468 OpenBSD 3.7             2005-05-19 [OBD]
 469 NetBSD 2.0.3            2005-10-31 [NBD] (security/critical release)
 470 OpenBSD 3.8             2005-11-01 [OBD]
 471 FreeBSD 6.0             2005-11-01 [FBD]
 472 NetBSD 2.1              2005-11-02 [NBD]
 473 NetBSD 3.0              2005-12-23 [NBD]
 474 DragonFly 1.4.0         2006-01-08 [DFB]
 475 OpenBSD 3.9             2006-05-01 [OBD]
 476 FreeBSD 6.1             2006-05-08 [FBD]
 477 FreeBSD 5.5             2006-05-25 [FBD]
 478 NetBSD 3.0.1            2006-07-24 [NBD] (security/critical release)
 479 DragonFly 1.6.0         2006-07-24 [DFB]
 480 OpenBSD 4.0             2006-11-01 [OBD]
 481 NetBSD 3.0.2            2006-11-04 [NBD] (security/critical release)
 482 NetBSD 3.1              2006-11-04 [NBD]
 483 FreeBSD 6.2             2007-01-15 [FBD]
 484 DragonFly 1.8.0         2007-01-30 [DFB]
 485 OpenBSD 4.1             2007-05-01 [OBD]
 486 DragonFly 1.10.0        2007-08-06 [DFB]
 487 Mac OS X 10.5           2007-10-26 [APL]
 488 OpenBSD 4.2             2007-11-01 [OBD]
 489 NetBSD 4.0              2007-12-19 [NBD]
 490 FreeBSD 6.3             2008-01-18 [FBD]
 491 DragonFly 1.12.0        2008-02-26 [DFB]
 492 FreeBSD 7.0             2008-02-27 [FBD]
 493 OpenBSD 4.3             2008-05-01 [OBD]
 494 DragonFly 2.0.0         2008-07-21 [DFB]
 495 OpenBSD 4.4             2008-11-01 [OBD]
 496 FreeBSD 6.4             2008-11-28 [FBD]
 497 FreeBSD 7.1             2009-01-04 [FBD]
 498 DragonFly 2.2.0         2009-02-17 [DFB]
 499
 500 Bibliography
 501 ------------------------
 502
 503 Leffler, Samuel J., Marshall Kirk McKusick, Michael J Karels and John
 504 Quarterman. The Design and Implementation of the 4.3BSD UNIX Operating
 505 System. Reading, Mass. Addison-Wesley, 1989. ISBN 0-201-06196-1
 506
 507 Salus, Peter H. A quarter century of UNIX. Addison-Wesley Publishing
 508 Company, Inc., 1994. ISBN 0-201-54777-5
 509
 510 McKusick, Marshall Kirk, Keith Bostic, Michael J Karels, and John
 511 Quarterman. The Design and Implementation of the 4.4BSD Operating
 512 System. Reading, Mass. Addison-Wesley, 1996. ISBN 0-201-54979-4
 513
 514 McKusick, Marshall Kirk, George Neville-Neil. The Design and
 515 Implementation of the FreeBSD Operating System.
 516 Addison-Wesley Professional, Published: Aug 2, 2004. ISBN 0-201-70245-2
 517
 518 Doug McIlroy. Research Unix Reader.
 519
 520 Michael G. Brown. The Role of BSD in the Development of Unix.
 521 Presented to the Tasmanian Unix Special Interest Group of the
 522 Australian Computer Society, Hobart, August 1993.
 523
 524 Peter H. Salus. Unix at 25. Byte Magazine, October 1994.
 525 URL: http://www.byte.com/art/9410/sec8/art3.htm
 526
 527 Andreas Klemm, Lars Köller. If you're going to San Francisco ...
 528 Die freien BSD-Varianten von Unix. c't April 1997, page 368ff.
 529
 530 BSD Release Announcements collection.
 531 URL: http://www.de.FreeBSD.org/de/ftp/releases/
 532
 533 BSD Hypertext Man Pages
 534 URL: http://www.FreeBSD.org/cgi/man.cgi
 535
 536 UNIX history graphing project
 537 URL: http://minnie.tuhs.org/Unix_History/index.html
 538
 539 UNIX history
 540 URL: http://www.levenez.com/unix/
 541
 542 James Howard: The BSD Family Tree
 543 URL: http://ezine.daemonnews.org/200104/bsd_family.html
 544 ("what are the differences between FreeBSD, NetBSD, and OpenBSD?")
 545
 546
 547 Acknowledgments
 548 ---------------
 549
 550 Josh Gilliam for suggestions, bug fixes, and finding very old
 551 original BSD announcements from Usenet or tapes.
 552
 553 Steven M. Schultz for providing 2.8BSD, 2.10BSD, 2.11BSD manual pages.
 554
 555 --
 556 Copyright (c) 1997-2007 Wolfram Schneider <wosch@FreeBSD.ORG>
 557 URL: http://cvsweb.freebsd.org/src/share/misc/bsd-family-tree
 558
 559 $FreeBSD$