share/misc/bsd-family-tree

   1 The UNIX system family tree: Research and BSD
   2 ---------------------------------------------
   3
   4 First Edition (V1)
   5      |
   6 Second Edition (V2)
   7      |
   8 Third Edition (V3)
   9      |
  10 Fourth Edition (V4)
  11      |
  12 Fifth Edition (V5)
  13      |
  14 Sixth Edition (V6) -----*
  15        \                |
  16         \               |
  17          \              |
  18 Seventh Edition (V7)    |
  19             \           |
  20              \        1BSD
  21              32V        |
  22                \      2BSD---------------*
  23                 \    /                   |
  24                  \  /                    |
  25                   \/                     |
  26                  3BSD                    |
  27                   |                      |
  28                4.0BSD                2.79BSD
  29                   |                      |
  30                4.1BSD --------------> 2.8BSD
  31                   |                      |
  32               4.1aBSD -----------\       |
  33                   |                \     |
  34               4.1bBSD                \   |
  35                   |                    \ |
  36       *------ 4.1cBSD --------------> 2.9BSD
  37      /            |                      |
  38 Eighth Edition    |                   2.9BSD-Seismo
  39      |            |                      |
  40      +----<--- 4.2BSD               2.9.1BSD
  41      |            |                      |
  42      +----<--- 4.3BSD -------------> 2.10BSD
  43      |            |               /      |
  44 Ninth Edition     |              / 2.10.1BSD
  45      |         4.3BSD Tahoe-----+        |
  46      |            |              \       |
  47      |            |                \     |
  48      v            |                  2.11BSD
  49 Tenth Edition     |                      |
  50                   |                  2.11BSD rev #430
  51                4.3BSD NET/1              |
  52                   |                      v
  53                4.3BSD Reno
  54                   |
  55    *---------- 4.3BSD NET/2 -------------------+-------------*
  56    |                    |                      |             |
  57 386BSD 0.0              |                      |           BSD/386 ALPHA
  58    |                    |                      |             |
  59 386BSD 0.1 ------------>+                      |           BSD/386 0.3.[13]
  60    |     \              |                  4.4BSD Alpha      |
  61    |     386BSD 1.0     |                      |           BSD/386 0.9.[34]
  62    |                    |                  4.4BSD            |
  63    |                    |                    / |             |
  64    |                    |   4.4BSD-Encumbered  |             |
  65    |                 NetBSD 0.8                |           BSD/386 1.0
  66    |                    |                      |             |
  67 FreeBSD 1.0          NetBSD 0.9                |           BSD/386 1.1
  68    |                    |           .----- 4.4BSD Lite       |
  69 FreeBSD 1.1             |          /   /       |     \       |
  70    |                    |         /   /        |      \      |
  71 FreeBSD 1.1.5       .---|--------'   /         |       \     |
  72    |               /    |           /          |        \    |
  73 FreeBSD 1.1.5.1   /     |          /           |         \   |
  74    |             /   NetBSD 1.0 <-'            |          \  |
  75    |            /       |                      |           \ |
  76 FreeBSD 2.0 <--'        |                      |           BSD/OS 2.0
  77    |                     \                     |             |
  78 FreeBSD 2.0.5             \                    |           BSD/OS 2.0.1
  79    |                 .-----\------------- 4.4BSD Lite2       |
  80    |                 |      \             |  |   |   |       |
  81    |                 | .-----|------Rhapsody |   |   |       |
  82    |                 | |     |        NetBSD 1.3 |   |       |
  83    |                 | |     |           OpenBSD 2.3 |       |
  84    |                 | |     |                BSD/OS 3.0     |
  85 FreeBSD 2.1          | |     |                               |
  86  |   |               | |  NetBSD 1.1 ------.               BSD/OS 2.1
  87  | FreeBSD 2.1.5     | |     |              \                |
  88  |     |             | |  NetBSD 1.2         \             BSD/OS 3.0
  89  | FreeBSD 2.1.6     | |     |  \          OpenBSD 2.0       |
  90  |     |             | |     |   \             |             |
  91  | FreeBSD 2.1.6.1   | |     |    \            |             |
  92  |     |             | |     |     \           |             |
  93  | FreeBSD 2.1.7     | |     |      |          |             |
  94  |     |             | |     |  NetBSD 1.2.1   |             |
  95  | FreeBSD 2.1.7.1   | |     |                 |             |
  96  |                   | |     |                 |             |
  97  |                   | |     |                 |             |
  98  *-FreeBSD 2.2       | |     |                 |             |
  99  |        \          | |     |                 |             |
 100  |     FreeBSD 2.2.1 | |     |                 |             |
 101  |         |         | |     |                 |             |
 102  |     FreeBSD 2.2.2 | |     |             OpenBSD 2.1       |
 103  |         |         | |     |                 |             |
 104  |     FreeBSD 2.2.5 | |     |                 |             |
 105  |         |         | |     |             OpenBSD 2.2       |
 106  |         |         | |  NetBSD 1.3           |             |
 107  |     FreeBSD 2.2.6 | |     |    |            |             |
 108  |         |         | |     | NetBSD 1.3.1    |           BSD/OS 3.1
 109  |         |         | |     |    |        OpenBSD 2.3       |
 110  |         |         | |     | NetBSD 1.3.2    |             |
 111  |     FreeBSD 2.2.7 | |     |    |            |             |
 112  |         |         | |     |    |            |           BSD/OS 4.0
 113  |         v         | |     |    |            |             |
 114  |     FreeBSD 2.2.8 | |     |    |            |             |
 115  |                   | |     |    |        OpenBSD 2.4       |
 116 FreeBSD 3.0 <--------* |     |    v            |             |
 117  |                     |     | NetBSD 1.3.3    |             |
 118  *---FreeBSD 3.1       |     |                 |             |
 119  |       |             |     |                 |           BSD/OS 4.0.1
 120  |   FreeBSD 3.2----*  |  NetBSD 1.4       OpenBSD 2.5       |
 121  |       |          |  |  |  |    |            |             |
 122  |       |          |  |  |  |    |            |             |
 123  |       |          |  |  |  |    |            |             |
 124  |   FreeBSD 3.3    |  |  |  | NetBSD 1.4.1    |             |
 125  |       |          |  |  |  |    |        OpenBSD 2.6       |
 126  |   FreeBSD 3.4    |  |  |  |    |            |             |
 127  |           |      |  |  |  |    |            |           BSD/OS 4.1
 128 FreeBSD 4.0  |      |  |  |  | NetBSD 1.4.2    |             |
 129  |           |      |  |  |  |    |            |             |
 130  |           |      |  |  |  |    |            |             |
 131  |   FreeBSD 3.5    |  |  |  |    |        OpenBSD 2.7       |
 132  |           |      |  |  |  |    |            |             |
 133  |   FreeBSD 3.5.1  |  |  |  |    |            |             |
 134  |                  |  |  |  |    |            |             |
 135  *---FreeBSD 4.1    |  |  |  |    |            |             |
 136  |      |           |  | (?) |    |            |             |
 137  |   FreeBSD 4.1.1  |  |  /  |    |            |             |
 138  |      |           |  | /   |    |            |             |
 139  |   FreeBSD 4.2   Darwin/   | NetBSD 1.4.3    |             |
 140  |      |         Mac OS X   |             OpenBSD 2.8     BSD/OS 4.2
 141  |      |             |      |                 |             |
 142  |      |             |      |                 |             |
 143  |      |           10.0  NetBSD 1.5           |             |
 144  |   FreeBSD 4.3      |      |    |            |             |
 145  |      |             |      |    |        OpenBSD 2.9       |
 146  |      |             |      | NetBSD 1.5.1    |             |
 147  |      |             |      |    |            |             |
 148  |   FreeBSD 4.4-.    |      | NetBSD 1.5.2    |             |
 149  |      |        | Mac OS X  |    |            |             |
 150  |      |        |   10.1    |    |        OpenBSD 3.0       |
 151  |   FreeBSD 4.5 |    |      |    |            |             |
 152  |      |         \   |      |    |            |           BSD/OS 4.3
 153  |   FreeBSD 4.6   \  |      |    |        OpenBSD 3.1       |
 154  |      |           \ |      | NetBSD 1.5.3    |             |
 155  |   FreeBSD 4.6.2 Mac OS X  |                 |             |
 156  |      |            10.2    |                 |             |
 157  |   FreeBSD 4.7      |      |                 |             |
 158  |      |             |   NetBSD 1.6       OpenBSD 3.2       |
 159  |   FreeBSD 4.8      |      |    |            |             |
 160  |      |             |      | NetBSD 1.6.1    |             |
 161  |      |--------.    |      |    |        OpenBSD 3.3     BSD/OS 5.0
 162  |      |         \   |      |    |            |             |
 163  |   FreeBSD 4.9   |  |      |    |        OpenBSD 3.4     BSD/OS 5.1 ISE
 164  |      |          |  |      |    |            |
 165  |      |          |  |      | NetBSD 1.6.2    |
 166  |      |          |  |      |    |            |
 167  |      |          |  |      |    |        OpenBSD 3.5
 168  |      |          |  |      |    v            |
 169  |   FreeBSD 4.10  |  |      |                 |
 170  |      |          |  |      |                 |
 171  |   FreeBSD 4.11  |  |      |                 |
 172  |                 |  |      |                 |
 173  |                  `-|------|-----------------|---------------------.
 174  |                    |      |                 |                      \
 175 FreeBSD 5.0           |      |                 |                       |
 176  |                    |      |                 |                       |
 177 FreeBSD 5.1           |      |                 |                 DragonFly 1.0
 178  |          \         |      |                 |                       |
 179  |           ----- Mac OS X  |                 |                       |
 180  |                   10.3    |                 |                       |
 181 FreeBSD 5.2           |      |                 |                       |
 182  |      |             |      |                 |                       |
 183  |   FreeBSD 5.2.1    |      |                 |                       |
 184  |                    |      |                 |                       |
 185  *-------FreeBSD 5.3  |      |                 |                       |
 186  |           |        |      |             OpenBSD 3.6                 |
 187  |           |        |   NetBSD 2.0           |                       |
 188  |           |        |      | |  |            |                DragonFly 1.2.0
 189  |           |     Mac OS X  | | NetBSD 2.0.2  |                       |
 190  |           |       10.4    | |  |            |                       |
 191  |       FreeBSD 5.4  |      | |  |            |                       |
 192  |           |        |      | |  |        OpenBSD 3.7                 |
 193  |           |        |      | | NetBSD 2.0.3  |                       |
 194  |           |        |      | |  |            |                       |
 195  *--FreeBSD  |        |      | |  v        OpenBSD 3.8                 |
 196  |    6.0    |        |      | |               |                       |
 197  |     |     |        |      |  \              |                       |
 198  |     |     |        |      | NetBSD 2.1      |                       |
 199  |     |     |        |      |                 |                       |
 200  |     |     |        |   NetBSD 3.0           |                       |
 201  |     |     |        |      | |  |            |                DragonFly 1.4.0
 202  |     |     |        |      | |  |        OpenBSD 3.9                 |
 203  |  FreeBSD  |        |      | |  |            |                       |
 204  |    6.1    |        |      | |  |            |                       |
 205  |     |  FreeBSD 5.5 |      | |  |            |                       |
 206  |     |              |      | | NetBSD 3.0.1  |                DragonFly 1.6.0
 207  |     |              |      | |  |            |                       |
 208  |     |              |      | |  |        OpenBSD 4.0                 |
 209  |     |              |      | | NetBSD 3.0.2  |                       |
 210  |     |              |      | NetBSD 3.1      |                       |
 211  | FreeBSD 6.2        |      |                 |                       |
 212  |     |              |      |                 |                DragonFly 1.8.0
 213  |     |              |      |             OpenBSD 4.1                 |
 214  |     |              |      |                 |                DragonFly 1.10.0
 215  |     |           Mac OS X  |                 |                       |
 216  |     |             10.5    |                 |                       |
 217  |     |              |      |             OpenBSD 4.2                 |
 218  |     |              |   NetBSD 4.0           |                       |
 219  | FreeBSD 6.3        |      |                 |                       |
 220  |            \       |      |                 |                       |
 221  *--FreeBSD    |      |      |                 |                DragonFly 1.12.0
 222  |    7.0      |      |      |                 |                       |
 223  |     |       |      |      |             OpenBSD 4.3                 |
 224  |     |       |      |      |                 |                DragonFly 2.0.0
 225  |     |    FreeBSD   |      |             OpenBSD 4.4                 |
 226  |     |      6.4     |      |                 |                       |
 227  |     |              |      |                 |                       |
 228  |  FreeBSD 7.1       |      |                 |                       |
 229  |     |              |      |                 |                DragonFly 2.2.0
 230  |  FreeBSD 7.2       |   NetBSD 5.0       OpenBSD 4.5                 |
 231  |     |              |      |                 |                       |
 232  |     |              |      |                 |                DragonFly 2.4.0
 233  |     V              |      |                 |                       |
 234  |                    |      |                 |                       |
 235 FreeBSD 8 -current    |  NetBSD -current  OpenBSD -current             |
 236  |                    |      |                 |                       |
 237  v                    v      v                 v                       v
 238
 239 Time
 240 ----------------
 241
 242 Time tolerance +/- 6 months, depending on which book/article you read; if it
 243 was the announcement in Usenet or if it was available as tape.
 244
 245 [44B] McKusick, Marshall Kirk, Keith Bostic, Michael J Karels,
 246         and John Quarterman. The Design and Implementation of
 247         the 4.4BSD Operating System.
 248 [APL] Apple website [http://www.apple.com/macosx/]
 249 [BSDI] Berkeley Software Design, Inc.
 250 [DFB] DragonFlyBSD Project, The.
 251 [DOC] README, COPYRIGHT on tape.
 252 [FBD] FreeBSD Project, The.
 253 [KB]  Keith Bostic. BSD2.10 available from Usenix. comp.unix.sources,
 254         Volume 11, Info 4, April, 1987.
 255 [KKK] Mike Karels, Kirk McKusick, and Keith Bostic. tahoe announcement.
 256         comp.bugs.4bsd.ucb-fixes, June 15, 1988.
 257 [KSJ] Michael J. Karels, Carl F. Smith, and William F. Jolitz.
 258         Changes in the Kernel in 2.9BSD. Second Berkeley Software
 259         Distribution UNIX Version 2.9, July, 1983.
 260 [NBD] NetBSD Project, The.
 261 [OBD] OpenBSD Project, The.
 262 [QCU] Salus, Peter H. A quarter century of UNIX.
 263 [SMS] Steven M. Schultz. 2.11BSD, UNIX for the PDP-11.
 264 [TUHS] The Unix Historical Society.  http://minnie.tuhs.org/Unix_History/.
 265 [USE] Usenet announcement.
 266 [WRS] Wind River Systems, Inc.
 267 [dmr] Dennis Ritchie, via E-Mail
 268
 269 Multics                 1965
 270 UNIX                    Summer 1969
 271                                 DEC PDP-7
 272 First   Edition         1971-11-03 [QCU]
 273                                 DEC PDP-11/20, Assembler
 274 Second  Edition         1972-06-12 [QCU]
 275                                 10 UNIX installations
 276 Third   Edition         1973-02-xx [QCU]
 277                                 Pipes, 16 installations
 278 Fourth  Edition         1973-11-xx [QCU]
 279                                 rewriting in C effected,
 280                                 above 30 installations
 281 Fifth   Edition         1974-06-xx [QCU]
 282                                 above 50 installations
 283 Sixth   Edition         1975-05-xx [QCU]
 284                                 port to DEC Vax
 285 Seventh Edition         1979-01-xx [QCU]
 286                                 first portable UNIX
 287 Eighth  Edition         1985-02-xx [QCU]
 288                                 VAX 11/750, VAX 11/780 [dmr]
 289                                 descended from 4.1c BSD [dmr]
 290                                 descended from 4.1 BSD [44B]
 291                         scooping-out and replacement of the character-device
 292                         and networking part by the streams mechanism
 293
 294 Ninth   Edition         1986-09-xx [QCU]
 295 Tenth   Edition         1989-10-xx [QCU]
 296
 297 1BSD                    late 1977
 298                         1978-03-09 [QCU]
 299                                 PDP-11, Pascal, ex(1)
 300                                 30 free copies of 1BSD sent out
 301                                 35 tapes sold for 50 USD [QCU]
 302 2BSD                    mid 1978 [QCU] 1979-05-10 [TUHS]
 303                                 75 2BSD tapes shipped
 304 2.79BSD                 1980-04-xx [TUHS]
 305 2.8BSD                  1981-07-xx [KSJ]
 306
 307 2.8.1BSD                1982-01-xx [QCU]
 308                                 set of performance improvements
 309 2.9BSD                  1983-07-xx [KSJ]
 310 2.9.1BSD                1983-11-xx [TUHS]
 311 2.9BSD-Seismo           1985-08-xx [SMS]
 312 2.10BSD                 1987-04-xx [KKK]
 313 2.10.1BSD               1989-01-xx [SMS]
 314 2.11BSD                 1992-02-xx [SMS]
 315 2.11BSD rev #430        1999-12-13 [SMS]
 316
 317 32V                     1978-1[01]-xx [QCU]
 318 3BSD                    late 1979 [QCU] March 1980 [TUHS]
 319                                 virtual memory, page replacement,
 320                                 demand paging
 321 4.0BSD                  1980-10-xx
 322 4.1BSD                  1981-07-08 [DOC]
 323 4.1aBSD                 1982-04-xx
 324                                 alpha release, 100 sites, networking [44B]
 325 4.1bBSD                         internal release, fast filesystem [44B]
 326 4.1cBSD                 late 1982
 327                                 beta release, IPC [44B]
 328 4.2BSD                  1983-09-xx [QCU]
 329                         1983-08-03 [DOC]
 330 4.3BSD                  1986-06-xx [QCU]
 331                         1986-04-05 [KB], [DOC]
 332 4.3BSD Tahoe            1988-06-15 [QCU], [DOC]
 333 4.3BSD NET/1            1988-11-xx [QCU]
 334                         1989-01-01 [DOC]
 335 4.3BSD Reno             1990-06-29 [QCU], [DOC]
 336 4.3BSD NET/2            1991-06-28 [QCU], [DOC]
 337
 338 BSD/386 ALPHA           1991-12-xx [BSDI]
 339                                 first code released to people outside BSDI
 340 386BSD 0.0              1992-02-xx [DOC]
 341 BSD/386 0.3.1           1992-04-xx [BSDI] first ext. beta; B customers
 342 BSD/386 0.3.3           1992-06-xx [BSDI] first CDROM version
 343 386BSD 0.1              1992-07-28 [DOC]
 344 4.4BSD Alpha            1992-07-07
 345 BSD/386 0.9.3           1992-10-xx [BSDI]
 346                                 first external gamma; G customers
 347 BSD/386 0.9.4           1992-12-xx [BSDI]
 348                                 would have been 1.0 except for request
 349                                 for preliminary injunction
 350 BSD/386 1.0             1993-03-xx [BSDI]
 351                                 injunction denied; first official release
 352 NetBSD 0.8              1993-04-20 [NBD]
 353 4.4BSD                  1993-06-01 [USE]
 354 NetBSD 0.9              1993-08-23 [NBD]
 355 FreeBSD 1.0             1993-11-01 [FBD]
 356 FreeBSD 1.0.2           1993-11-14 [FBD]
 357                                 supersedes 1.0 13 days after release.
 358 BSD/386 1.1             1994-02-xx [BSDI]
 359 4.4BSD Lite             1994-03-01 [USE]
 360 FreeBSD 1.1             1994-05-07 [FBD]
 361 FreeBSD 1.1.5           1994-06-30 [FBD]
 362 FreeBSD 1.1.5.1         1994-07-05 [FBD]
 363                                 supersedes 1.1.5 5 days after release.
 364 NetBSD 1.0              1994-10-26 [NBD]
 365 386BSD 1.0              1994-11-12 [USE]
 366 FreeBSD 2.0             1994-11-23 [FBD]
 367 BSD/OS 2.0              1995-01-xx [BSDI] 4.4 lite based
 368 FreeBSD 2.0.5           1995-06-10 [FBD]
 369 BSD/OS 2.0.1            1995-06-xx [BSDI]
 370 4.4BSD Lite Release 2   1995-06-xx [44B]
 371                                 the true final distribution from the CSRG
 372 FreeBSD 2.1.0           1995-11-19 [FBD]
 373 NetBSD 1.1              1995-11-26 [NBD]
 374 BSD/OS 2.1              1996-01-xx [BSDI]
 375 FreeBSD 2.1.5           1996-07-14 [FBD]
 376 NetBSD 1.2              1996-10-04 [NBD]
 377 OpenBSD 2.0             1996-10-18 [OBD]
 378 FreeBSD 2.1.6           1996-11-16 [FBD]
 379 FreeBSD 2.1.6.1         1996-11-25 [FBD] (sendmail security release)
 380 Rhapsody                1997-xx-xx
 381 FreeBSD 2.1.7           1997-02-20 [FBD]
 382 BSD/OS 3.0              1997-02-xx [BSDI] 4.4 lite2 based
 383 FreeBSD 2.2.0           1997-03-16 [FBD]
 384 FreeBSD 2.2.1           1997-03-25 [FBD]
 385 FreeBSD 2.2.2           1997-05-16 [FBD]
 386 NetBSD 1.2.1            1997-05-20 [NBD] (patch release)
 387 OpenBSD 2.1             1997-06-01 [OBD]
 388 FreeBSD 2.2.5           1997-10-22 [FBD]
 389 OpenBSD 2.2             1997-12-01 [OBD]
 390 NetBSD 1.3              1998-01-04 [NBD]
 391 FreeBSD 2.2.6           1998-03-25 [FBD]
 392 NetBSD 1.3.1            1998-03-09 [NBD] (patch release)
 393 BSD/OS 3.1              1998-03-xx [BSDI]
 394 OpenBSD 2.3             1998-05-19 [OBD]
 395 NetBSD 1.3.2            1998-05-29 [NBD] (patch release)
 396 FreeBSD 2.2.7           1998-07-22 [FBD]
 397 BSD/OS 4.0              1998-08-xx [BSDI]
 398                                 2-lock MP support, ELF executables
 399 FreeBSD 3.0             1998-10-16 [FBD]
 400                                 FreeBSD-3.0 is a snapshot from -current,
 401                                 while 3.1 and 3.2 are from 3.x-stable which
 402                                 was branched quite some time after 3.0-release
 403 FreeBSD 2.2.8           1998-11-29 [FBD]
 404 OpenBSD 2.4             1998-12-01 [OBD]
 405 NetBSD 1.3.3            1998-12-23 [NBD] (patch release)
 406 FreeBSD 3.1             1999-02-15 [FBD]
 407 BSD/OS 4.0.1            1999-03-xx [BSDI]
 408 NetBSD 1.4              1999-05-12 [NBD]
 409 FreeBSD 3.2             1999-05-17 [FBD]
 410 OpenBSD 2.5             1999-05-19 [OBD]
 411 NetBSD 1.4.1            1999-08-26 [NBD] (patch release)
 412 FreeBSD 3.3             1999-09-17 [FBD]
 413 OpenBSD 2.6             1999-12-01 [OBD]
 414 FreeBSD 3.4             1999-12-20 [FBD]
 415 BSD/OS 4.1              1999-12-xx [BSDI]
 416 FreeBSD 4.0             2000-03-13 [FBD]
 417 NetBSD 1.4.2            2000-03-19 [NBD] (patch release)
 418 OpenBSD 2.7             2000-06-15 [OBD]
 419 FreeBSD 3.5             2000-06-24 [FBD]
 420 FreeBSD 4.1             2000-07-27 [FBD]
 421 FreeBSD 3.5.1           2000-07-28 [FBD]
 422 FreeBSD 4.1.1           2000-09-25 [FBD] (a network-only patch release)
 423 FreeBSD 4.2             2000-11-21 [FBD]
 424 NetBSD 1.4.3            2000-11-25 [NBD] (patch release)
 425 BSD/OS 4.2              2000-11-29 [BSDI]
 426 OpenBSD 2.8             2000-12-01 [OBD]
 427 NetBSD 1.5              2000-12-06 [NBD]
 428 Mac OS X 10.0           2001-03-24 [APL]
 429 FreeBSD 4.3             2001-04-20 [FBD]
 430 OpenBSD 2.9             2001-06-01 [OBD]
 431 NetBSD 1.5.1            2001-07-11 [NBD] (patch release)
 432 NetBSD 1.5.2            2001-09-13 [NBD] (patch release)
 433 FreeBSD 4.4             2001-09-18 [FBD]
 434 Mac OS X 10.1           2001-09-29 [APL]
 435 OpenBSD 3.0             2001-12-01 [OBD]
 436 FreeBSD 4.5             2002-01-29 [FBD]
 437 BSD/OS 4.3              2002-03-14 [WRS]
 438 OpenBSD 3.1             2002-05-19 [OBD]
 439 FreeBSD 4.6             2002-06-15 [FBD]
 440 NetBSD 1.5.3            2002-07-22 [NBD] (patch release)
 441 FreeBSD 4.6.2           2002-08-15 [FBD] (patch release)
 442 Mac OS X 10.2           2002-08-23 [APL]
 443 NetBSD 1.6              2002-09-14 [NBD]
 444 FreeBSD 4.7             2002-10-08 [FBD]
 445 OpenBSD 3.2             2002-11-01 [OBD]
 446 FreeBSD 5.0             2003-01-17 [FBD]
 447                                 FreeBSD 5.0 is a separate branch off of
 448                                 -current, similar to 3.0.
 449 FreeBSD 4.8             2003-04-03 [FBD]
 450 NetBSD 1.6.1            2003-04-21 [NBD] (patch release)
 451 OpenBSD 3.3             2003-05-01 [OBD]
 452 BSD/OS 5.0              2003-05-?? [WRS]
 453 FreeBSD 5.1             2003-06-09 [FBD]
 454 Mac OS X 10.3           2003-10-24 [APL]
 455 FreeBSD 4.9             2003-10-28 [FBD]
 456 BSD/OS 5.1 ISE          2003-10-?? [WRS] (final version)
 457 OpenBSD 3.4             2003-11-01 [OBD]
 458 FreeBSD 5.2             2004-01-12 [FBD]
 459 FreeBSD 5.2.1           2004-02-22 [FBD] (patch release)
 460 NetBSD 1.6.2            2004-03-01 [NBD] (patch release)
 461 OpenBSD 3.5             2004-04-01 [OBD]
 462 FreeBSD 4.10            2004-05-27 [FBD]
 463 DragonFly 1.0           2004-07-12 [DFB]
 464 OpenBSD 3.6             2004-10-29 [OBD]
 465 FreeBSD 5.3             2004-11-06 [FBD]
 466 NetBSD 2.0              2004-12-09 [NBD]
 467 FreeBSD 4.11            2005-01-25 [FBD]
 468 DragonFly 1.2.0         2005-04-08 [DFB]
 469 NetBSD 2.0.2            2005-04-14 [NBD] (security/critical release)
 470 Mac OS X 10.4           2005-04-29 [APL]
 471 FreeBSD 5.4             2005-05-09 [FBD]
 472 OpenBSD 3.7             2005-05-19 [OBD]
 473 NetBSD 2.0.3            2005-10-31 [NBD] (security/critical release)
 474 OpenBSD 3.8             2005-11-01 [OBD]
 475 FreeBSD 6.0             2005-11-01 [FBD]
 476 NetBSD 2.1              2005-11-02 [NBD]
 477 NetBSD 3.0              2005-12-23 [NBD]
 478 DragonFly 1.4.0         2006-01-08 [DFB]
 479 OpenBSD 3.9             2006-05-01 [OBD]
 480 FreeBSD 6.1             2006-05-08 [FBD]
 481 FreeBSD 5.5             2006-05-25 [FBD]
 482 NetBSD 3.0.1            2006-07-24 [NBD] (security/critical release)
 483 DragonFly 1.6.0         2006-07-24 [DFB]
 484 OpenBSD 4.0             2006-11-01 [OBD]
 485 NetBSD 3.0.2            2006-11-04 [NBD] (security/critical release)
 486 NetBSD 3.1              2006-11-04 [NBD]
 487 FreeBSD 6.2             2007-01-15 [FBD]
 488 DragonFly 1.8.0         2007-01-30 [DFB]
 489 OpenBSD 4.1             2007-05-01 [OBD]
 490 DragonFly 1.10.0        2007-08-06 [DFB]
 491 Mac OS X 10.5           2007-10-26 [APL]
 492 OpenBSD 4.2             2007-11-01 [OBD]
 493 NetBSD 4.0              2007-12-19 [NBD]
 494 FreeBSD 6.3             2008-01-18 [FBD]
 495 DragonFly 1.12.0        2008-02-26 [DFB]
 496 FreeBSD 7.0             2008-02-27 [FBD]
 497 OpenBSD 4.3             2008-05-01 [OBD]
 498 DragonFly 2.0.0         2008-07-21 [DFB]
 499 OpenBSD 4.4             2008-11-01 [OBD]
 500 FreeBSD 6.4             2008-11-28 [FBD]
 501 FreeBSD 7.1             2009-01-04 [FBD]
 502 DragonFly 2.2.0         2009-02-17 [DFB]
 503 NetBSD 5.0              2009-04-29 [NBD]
 504 OpenBSD 4.5             2009-05-01 [OBD]
 505 FreeBSD 7.2             2009-05-04 [FBD]
 506 DragonFly 2.4.0         2009-09-16 [DFB]
 507
 508 Bibliography
 509 ------------------------
 510
 511 Leffler, Samuel J., Marshall Kirk McKusick, Michael J Karels and John
 512 Quarterman. The Design and Implementation of the 4.3BSD UNIX Operating
 513 System. Reading, Mass. Addison-Wesley, 1989. ISBN 0-201-06196-1
 514
 515 Salus, Peter H. A quarter century of UNIX. Addison-Wesley Publishing
 516 Company, Inc., 1994. ISBN 0-201-54777-5
 517
 518 McKusick, Marshall Kirk, Keith Bostic, Michael J Karels, and John
 519 Quarterman. The Design and Implementation of the 4.4BSD Operating
 520 System. Reading, Mass. Addison-Wesley, 1996. ISBN 0-201-54979-4
 521
 522 McKusick, Marshall Kirk, George Neville-Neil. The Design and
 523 Implementation of the FreeBSD Operating System.
 524 Addison-Wesley Professional, Published: Aug 2, 2004. ISBN 0-201-70245-2
 525
 526 Doug McIlroy. Research Unix Reader.
 527
 528 Michael G. Brown. The Role of BSD in the Development of Unix.
 529 Presented to the Tasmanian Unix Special Interest Group of the
 530 Australian Computer Society, Hobart, August 1993.
 531
 532 Peter H. Salus. Unix at 25. Byte Magazine, October 1994.
 533 URL: http://www.byte.com/art/9410/sec8/art3.htm
 534
 535 Andreas Klemm, Lars Köller. If you're going to San Francisco ...
 536 Die freien BSD-Varianten von Unix. c't April 1997, page 368ff.
 537
 538 BSD Release Announcements collection.
 539 URL: http://www.de.FreeBSD.org/de/ftp/releases/
 540
 541 BSD Hypertext Man Pages
 542 URL: http://www.FreeBSD.org/cgi/man.cgi
 543
 544 UNIX history graphing project
 545 URL: http://minnie.tuhs.org/Unix_History/index.html
 546
 547 UNIX history
 548 URL: http://www.levenez.com/unix/
 549
 550 James Howard: The BSD Family Tree
 551 URL: http://ezine.daemonnews.org/200104/bsd_family.html
 552 ("what are the differences between FreeBSD, NetBSD, and OpenBSD?")
 553
 554
 555 Acknowledgments
 556 ---------------
 557
 558 Josh Gilliam for suggestions, bug fixes, and finding very old
 559 original BSD announcements from Usenet or tapes.
 560
 561 Steven M. Schultz for providing 2.8BSD, 2.10BSD, 2.11BSD manual pages.
 562
 563 --
 564 Copyright (c) 1997-2007 Wolfram Schneider <wosch@FreeBSD.ORG>
 565 URL: http://cvsweb.freebsd.org/src/share/misc/bsd-family-tree
 566
 567 $FreeBSD: src/share/misc/bsd-family-tree,v 1.131 2009/09/18 07:07:34 maxim Exp $