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  |              |  Mac OS X  |    |            |                       |
 233  |              |    10.6    |    |            |                       |
 234  |              |     |      |    |            |                DragonFly 2.4.0
 235  |              |     |      |    |        OpenBSD 4.6                 |
 236  |              |     |      |    |            |                       |
 237  *--FreeBSD     |     |      |    |            |                       |
 238  |    8.0       |     |      |    |            |                       |
 239  |     |     FreeBSD  |      |    |            |                       |
 240  |     |       7.3    |      |    |            |                DragonFly 2.6.0
 241  |     |        |     |      |    |        OpenBSD 4.7                 |
 242  |  FreeBSD     |     |      |    |            |                       |
 243  |    8.1       |     |      |    |            |                       |
 244  |     |        |     |      |    |            |                DragonFly 2.8.2
 245  |     |        |     |      |    |        OpenBSD 4.8                 |
 246  |     |        |     |      | NetBSD 5.1      |                       |
 247  |  FreeBSD  FreeBSD  |      |                 |                       |
 248  |    8.2      7.4    |      |                 |               DragonFly 2.10.1
 249  |     v              |      |             OpenBSD 4.9                 |
 250  |                    |      |                 |                       |
 251  |                    |      |                 |                       |
 252  |                    |      |             OpenBSD 5.0                 |
 253  |                    |      |                 |                       |
 254 FreeBSD 9 -current    |  NetBSD -current  OpenBSD -current             |
 255  |                    |      |                 |                       |
 256  v                    v      v                 v                       v
 257
 258 Time
 259 ----------------
 260
 261 Time tolerance +/- 6 months, depending on which book/article you read; if it
 262 was the announcement in Usenet or if it was available as tape.
 263
 264 [44B] McKusick, Marshall Kirk, Keith Bostic, Michael J Karels,
 265         and John Quarterman. The Design and Implementation of
 266         the 4.4BSD Operating System.
 267 [APL] Apple website [http://www.apple.com/macosx/]
 268 [BSDI] Berkeley Software Design, Inc.
 269 [DFB] DragonFlyBSD Project, The.
 270 [DOC] README, COPYRIGHT on tape.
 271 [FBD] FreeBSD Project, The.
 272 [KB]  Keith Bostic. BSD2.10 available from Usenix. comp.unix.sources,
 273         Volume 11, Info 4, April, 1987.
 274 [KKK] Mike Karels, Kirk McKusick, and Keith Bostic. tahoe announcement.
 275         comp.bugs.4bsd.ucb-fixes, June 15, 1988.
 276 [KSJ] Michael J. Karels, Carl F. Smith, and William F. Jolitz.
 277         Changes in the Kernel in 2.9BSD. Second Berkeley Software
 278         Distribution UNIX Version 2.9, July, 1983.
 279 [NBD] NetBSD Project, The.
 280 [OBD] OpenBSD Project, The.
 281 [QCU] Salus, Peter H. A quarter century of UNIX.
 282 [SMS] Steven M. Schultz. 2.11BSD, UNIX for the PDP-11.
 283 [TUHS] The Unix Historical Society.  http://minnie.tuhs.org/Unix_History/.
 284 [USE] Usenet announcement.
 285 [WRS] Wind River Systems, Inc.
 286 [dmr] Dennis Ritchie, via E-Mail
 287
 288 Multics                 1965
 289 UNIX                    Summer 1969
 290                                 DEC PDP-7
 291 First   Edition         1971-11-03 [QCU]
 292                                 DEC PDP-11/20, Assembler
 293 Second  Edition         1972-06-12 [QCU]
 294                                 10 UNIX installations
 295 Third   Edition         1973-02-xx [QCU]
 296                                 Pipes, 16 installations
 297 Fourth  Edition         1973-11-xx [QCU]
 298                                 rewriting in C effected,
 299                                 above 30 installations
 300 Fifth   Edition         1974-06-xx [QCU]
 301                                 above 50 installations
 302 Sixth   Edition         1975-05-xx [QCU]
 303                                 port to DEC Vax
 304 Seventh Edition         1979-01-xx [QCU]
 305                                 first portable UNIX
 306 Eighth  Edition         1985-02-xx [QCU]
 307                                 VAX 11/750, VAX 11/780 [dmr]
 308                                 descended from 4.1c BSD [dmr]
 309                                 descended from 4.1 BSD [44B]
 310                         scooping-out and replacement of the character-device
 311                         and networking part by the streams mechanism
 312
 313 Ninth   Edition         1986-09-xx [QCU]
 314 Tenth   Edition         1989-10-xx [QCU]
 315
 316 1BSD                    late 1977
 317                         1978-03-09 [QCU]
 318                                 PDP-11, Pascal, ex(1)
 319                                 30 free copies of 1BSD sent out
 320                                 35 tapes sold for 50 USD [QCU]
 321 2BSD                    mid 1978 [QCU] 1979-05-10 [TUHS]
 322                                 75 2BSD tapes shipped
 323 2.79BSD                 1980-04-xx [TUHS]
 324 2.8BSD                  1981-07-xx [KSJ]
 325
 326 2.8.1BSD                1982-01-xx [QCU]
 327                                 set of performance improvements
 328 2.9BSD                  1983-07-xx [KSJ]
 329 2.9.1BSD                1983-11-xx [TUHS]
 330 2.9BSD-Seismo           1985-08-xx [SMS]
 331 2.10BSD                 1987-04-xx [KKK]
 332 2.10.1BSD               1989-01-xx [SMS]
 333 2.11BSD                 1992-02-xx [SMS]
 334 2.11BSD rev #430        1999-12-13 [SMS]
 335
 336 32V                     1978-1[01]-xx [QCU]
 337 3BSD                    late 1979 [QCU] March 1980 [TUHS]
 338                                 virtual memory, page replacement,
 339                                 demand paging
 340 4.0BSD                  1980-10-xx
 341 4.1BSD                  1981-07-08 [DOC]
 342 4.1aBSD                 1982-04-xx
 343                                 alpha release, 100 sites, networking [44B]
 344 4.1bBSD                         internal release, fast filesystem [44B]
 345 4.1cBSD                 late 1982
 346                                 beta release, IPC [44B]
 347 4.2BSD                  1983-09-xx [QCU]
 348                         1983-08-03 [DOC]
 349 4.3BSD                  1986-06-xx [QCU]
 350                         1986-04-05 [KB], [DOC]
 351 4.3BSD Tahoe            1988-06-15 [QCU], [DOC]
 352 4.3BSD NET/1            1988-11-xx [QCU]
 353                         1989-01-01 [DOC]
 354 4.3BSD Reno             1990-06-29 [QCU], [DOC]
 355 4.3BSD NET/2            1991-06-28 [QCU], [DOC]
 356
 357 BSD/386 ALPHA           1991-12-xx [BSDI]
 358                                 first code released to people outside BSDI
 359 386BSD 0.0              1992-02-xx [DOC]
 360 BSD/386 0.3.1           1992-04-xx [BSDI] first ext. beta; B customers
 361 BSD/386 0.3.3           1992-06-xx [BSDI] first CDROM version
 362 386BSD 0.1              1992-07-28 [DOC]
 363 4.4BSD Alpha            1992-07-07
 364 BSD/386 0.9.3           1992-10-xx [BSDI]
 365                                 first external gamma; G customers
 366 BSD/386 0.9.4           1992-12-xx [BSDI]
 367                                 would have been 1.0 except for request
 368                                 for preliminary injunction
 369 BSD/386 1.0             1993-03-xx [BSDI]
 370                                 injunction denied; first official release
 371 NetBSD 0.8              1993-04-20 [NBD]
 372 4.4BSD                  1993-06-01 [USE]
 373 NetBSD 0.9              1993-08-23 [NBD]
 374 FreeBSD 1.0             1993-11-01 [FBD]
 375 FreeBSD 1.0.2           1993-11-14 [FBD]
 376                                 supersedes 1.0 13 days after release.
 377 BSD/386 1.1             1994-02-xx [BSDI]
 378 4.4BSD Lite             1994-03-01 [USE]
 379 FreeBSD 1.1             1994-05-07 [FBD]
 380 FreeBSD 1.1.5           1994-06-30 [FBD]
 381 FreeBSD 1.1.5.1         1994-07-05 [FBD]
 382                                 supersedes 1.1.5 5 days after release.
 383 NetBSD 1.0              1994-10-26 [NBD]
 384 386BSD 1.0              1994-11-12 [USE]
 385 FreeBSD 2.0             1994-11-23 [FBD]
 386 BSD/OS 2.0              1995-01-xx [BSDI] 4.4 lite based
 387 FreeBSD 2.0.5           1995-06-10 [FBD]
 388 BSD/OS 2.0.1            1995-06-xx [BSDI]
 389 4.4BSD Lite Release 2   1995-06-xx [44B]
 390                                 the true final distribution from the CSRG
 391 FreeBSD 2.1.0           1995-11-19 [FBD]
 392 NetBSD 1.1              1995-11-26 [NBD]
 393 BSD/OS 2.1              1996-01-xx [BSDI]
 394 FreeBSD 2.1.5           1996-07-14 [FBD]
 395 NetBSD 1.2              1996-10-04 [NBD]
 396 OpenBSD 2.0             1996-10-18 [OBD]
 397 FreeBSD 2.1.6           1996-11-16 [FBD]
 398 FreeBSD 2.1.6.1         1996-11-25 [FBD] (sendmail security release)
 399 Rhapsody                1997-xx-xx
 400 FreeBSD 2.1.7           1997-02-20 [FBD]
 401 BSD/OS 3.0              1997-02-xx [BSDI] 4.4 lite2 based
 402 FreeBSD 2.2.0           1997-03-16 [FBD]
 403 FreeBSD 2.2.1           1997-03-25 [FBD]
 404 FreeBSD 2.2.2           1997-05-16 [FBD]
 405 NetBSD 1.2.1            1997-05-20 [NBD] (patch release)
 406 OpenBSD 2.1             1997-06-01 [OBD]
 407 FreeBSD 2.2.5           1997-10-22 [FBD]
 408 OpenBSD 2.2             1997-12-01 [OBD]
 409 NetBSD 1.3              1998-01-04 [NBD]
 410 FreeBSD 2.2.6           1998-03-25 [FBD]
 411 NetBSD 1.3.1            1998-03-09 [NBD] (patch release)
 412 BSD/OS 3.1              1998-03-xx [BSDI]
 413 OpenBSD 2.3             1998-05-19 [OBD]
 414 NetBSD 1.3.2            1998-05-29 [NBD] (patch release)
 415 FreeBSD 2.2.7           1998-07-22 [FBD]
 416 BSD/OS 4.0              1998-08-xx [BSDI]
 417                                 2-lock MP support, ELF executables
 418 FreeBSD 3.0             1998-10-16 [FBD]
 419                                 FreeBSD-3.0 is a snapshot from -current,
 420                                 while 3.1 and 3.2 are from 3.x-stable which
 421                                 was branched quite some time after 3.0-release
 422 FreeBSD 2.2.8           1998-11-29 [FBD]
 423 OpenBSD 2.4             1998-12-01 [OBD]
 424 NetBSD 1.3.3            1998-12-23 [NBD] (patch release)
 425 FreeBSD 3.1             1999-02-15 [FBD]
 426 BSD/OS 4.0.1            1999-03-xx [BSDI]
 427 NetBSD 1.4              1999-05-12 [NBD]
 428 FreeBSD 3.2             1999-05-17 [FBD]
 429 OpenBSD 2.5             1999-05-19 [OBD]
 430 NetBSD 1.4.1            1999-08-26 [NBD] (patch release)
 431 FreeBSD 3.3             1999-09-17 [FBD]
 432 OpenBSD 2.6             1999-12-01 [OBD]
 433 FreeBSD 3.4             1999-12-20 [FBD]
 434 BSD/OS 4.1              1999-12-xx [BSDI]
 435 FreeBSD 4.0             2000-03-13 [FBD]
 436 NetBSD 1.4.2            2000-03-19 [NBD] (patch release)
 437 OpenBSD 2.7             2000-06-15 [OBD]
 438 FreeBSD 3.5             2000-06-24 [FBD]
 439 FreeBSD 4.1             2000-07-27 [FBD]
 440 FreeBSD 3.5.1           2000-07-28 [FBD]
 441 FreeBSD 4.1.1           2000-09-25 [FBD] (a network-only patch release)
 442 FreeBSD 4.2             2000-11-21 [FBD]
 443 NetBSD 1.4.3            2000-11-25 [NBD] (patch release)
 444 BSD/OS 4.2              2000-11-29 [BSDI]
 445 OpenBSD 2.8             2000-12-01 [OBD]
 446 NetBSD 1.5              2000-12-06 [NBD]
 447 Mac OS X 10.0           2001-03-24 [APL]
 448 FreeBSD 4.3             2001-04-20 [FBD]
 449 OpenBSD 2.9             2001-06-01 [OBD]
 450 NetBSD 1.5.1            2001-07-11 [NBD] (patch release)
 451 NetBSD 1.5.2            2001-09-13 [NBD] (patch release)
 452 FreeBSD 4.4             2001-09-18 [FBD]
 453 Mac OS X 10.1           2001-09-29 [APL]
 454 OpenBSD 3.0             2001-12-01 [OBD]
 455 FreeBSD 4.5             2002-01-29 [FBD]
 456 BSD/OS 4.3              2002-03-14 [WRS]
 457 OpenBSD 3.1             2002-05-19 [OBD]
 458 FreeBSD 4.6             2002-06-15 [FBD]
 459 NetBSD 1.5.3            2002-07-22 [NBD] (patch release)
 460 FreeBSD 4.6.2           2002-08-15 [FBD] (patch release)
 461 Mac OS X 10.2           2002-08-23 [APL]
 462 NetBSD 1.6              2002-09-14 [NBD]
 463 FreeBSD 4.7             2002-10-08 [FBD]
 464 OpenBSD 3.2             2002-11-01 [OBD]
 465 FreeBSD 5.0             2003-01-17 [FBD]
 466                                 FreeBSD 5.0 is a separate branch off of
 467                                 -current, similar to 3.0.
 468 FreeBSD 4.8             2003-04-03 [FBD]
 469 NetBSD 1.6.1            2003-04-21 [NBD] (patch release)
 470 OpenBSD 3.3             2003-05-01 [OBD]
 471 BSD/OS 5.0              2003-05-?? [WRS]
 472 FreeBSD 5.1             2003-06-09 [FBD]
 473 Mac OS X 10.3           2003-10-24 [APL]
 474 FreeBSD 4.9             2003-10-28 [FBD]
 475 BSD/OS 5.1 ISE          2003-10-?? [WRS] (final version)
 476 OpenBSD 3.4             2003-11-01 [OBD]
 477 FreeBSD 5.2             2004-01-12 [FBD]
 478 FreeBSD 5.2.1           2004-02-22 [FBD] (patch release)
 479 NetBSD 1.6.2            2004-03-01 [NBD] (patch release)
 480 OpenBSD 3.5             2004-04-01 [OBD]
 481 FreeBSD 4.10            2004-05-27 [FBD]
 482 DragonFly 1.0           2004-07-12 [DFB]
 483 OpenBSD 3.6             2004-10-29 [OBD]
 484 FreeBSD 5.3             2004-11-06 [FBD]
 485 NetBSD 2.0              2004-12-09 [NBD]
 486 FreeBSD 4.11            2005-01-25 [FBD]
 487 DragonFly 1.2.0         2005-04-08 [DFB]
 488 NetBSD 2.0.2            2005-04-14 [NBD] (security/critical release)
 489 Mac OS X 10.4           2005-04-29 [APL]
 490 FreeBSD 5.4             2005-05-09 [FBD]
 491 OpenBSD 3.7             2005-05-19 [OBD]
 492 NetBSD 2.0.3            2005-10-31 [NBD] (security/critical release)
 493 OpenBSD 3.8             2005-11-01 [OBD]
 494 FreeBSD 6.0             2005-11-01 [FBD]
 495 NetBSD 2.1              2005-11-02 [NBD]
 496 NetBSD 3.0              2005-12-23 [NBD]
 497 DragonFly 1.4.0         2006-01-08 [DFB]
 498 OpenBSD 3.9             2006-05-01 [OBD]
 499 FreeBSD 6.1             2006-05-08 [FBD]
 500 FreeBSD 5.5             2006-05-25 [FBD]
 501 NetBSD 3.0.1            2006-07-24 [NBD] (security/critical release)
 502 DragonFly 1.6.0         2006-07-24 [DFB]
 503 OpenBSD 4.0             2006-11-01 [OBD]
 504 NetBSD 3.0.2            2006-11-04 [NBD] (security/critical release)
 505 NetBSD 3.1              2006-11-04 [NBD]
 506 FreeBSD 6.2             2007-01-15 [FBD]
 507 DragonFly 1.8.0         2007-01-30 [DFB]
 508 OpenBSD 4.1             2007-05-01 [OBD]
 509 DragonFly 1.10.0        2007-08-06 [DFB]
 510 Mac OS X 10.5           2007-10-26 [APL]
 511 OpenBSD 4.2             2007-11-01 [OBD]
 512 NetBSD 4.0              2007-12-19 [NBD]
 513 FreeBSD 6.3             2008-01-18 [FBD]
 514 DragonFly 1.12.0        2008-02-26 [DFB]
 515 FreeBSD 7.0             2008-02-27 [FBD]
 516 OpenBSD 4.3             2008-05-01 [OBD]
 517 DragonFly 2.0.0         2008-07-21 [DFB]
 518 OpenBSD 4.4             2008-11-01 [OBD]
 519 FreeBSD 6.4             2008-11-28 [FBD]
 520 FreeBSD 7.1             2009-01-04 [FBD]
 521 DragonFly 2.2.0         2009-02-17 [DFB]
 522 NetBSD 5.0              2009-04-29 [NBD]
 523 OpenBSD 4.5             2009-05-01 [OBD]
 524 FreeBSD 7.2             2009-05-04 [FBD]
 525 Mac OS X 10.6           2009-06-08 [APL]
 526 DragonFly 2.4.0         2009-09-16 [DFB]
 527 OpenBSD 4.6             2009-10-18 [OBD]
 528 FreeBSD 8.0             2009-11-26 [FBD]
 529 FreeBSD 7.3             2010-03-23 [FBD]
 530 DragonFly 2.6.0         2010-03-28 [DFB]
 531 OpenBSD 4.7             2010-05-19 [OBD]
 532 FreeBSD 8.1             2010-07-24 [FBD]
 533 DragonFly 2.8.2         2010-10-30 [DFB]
 534 OpenBSD 4.8             2010-11-01 [OBD]
 535 NetBSD 5.1              2010-11-19 [NBD]
 536 FreeBSD 7.4             2011-02-24 [FBD]
 537 FreeBSD 8.2             2011-02-24 [FBD]
 538 DragonFly 2.10.1        2011-04-26 [DFB]
 539 OpenBSD 4.9             2011-05-01 [OBD]
 540 OpenBSD 5.0             2011-11-01 [OBD]
 541
 542 Bibliography
 543 ------------------------
 544
 545 Leffler, Samuel J., Marshall Kirk McKusick, Michael J Karels and John
 546 Quarterman. The Design and Implementation of the 4.3BSD UNIX Operating
 547 System. Reading, Mass. Addison-Wesley, 1989. ISBN 0-201-06196-1
 548
 549 Salus, Peter H. A quarter century of UNIX. Addison-Wesley Publishing
 550 Company, Inc., 1994. ISBN 0-201-54777-5
 551
 552 McKusick, Marshall Kirk, Keith Bostic, Michael J Karels, and John
 553 Quarterman. The Design and Implementation of the 4.4BSD Operating
 554 System. Reading, Mass. Addison-Wesley, 1996. ISBN 0-201-54979-4
 555
 556 McKusick, Marshall Kirk, George Neville-Neil. The Design and
 557 Implementation of the FreeBSD Operating System.
 558 Addison-Wesley Professional, Published: Aug 2, 2004. ISBN 0-201-70245-2
 559
 560 Doug McIlroy. Research Unix Reader.
 561
 562 Michael G. Brown. The Role of BSD in the Development of Unix.
 563 Presented to the Tasmanian Unix Special Interest Group of the
 564 Australian Computer Society, Hobart, August 1993.
 565
 566 Peter H. Salus. Unix at 25. Byte Magazine, October 1994.
 567 URL: http://www.byte.com/art/9410/sec8/art3.htm
 568
 569 Andreas Klemm, Lars Köller. If you're going to San Francisco ...
 570 Die freien BSD-Varianten von Unix. c't April 1997, page 368ff.
 571
 572 BSD Release Announcements collection.
 573 URL: http://www.FreeBSD.org/releases/
 574
 575 BSD Hypertext Man Pages
 576 URL: http://www.FreeBSD.org/cgi/man.cgi
 577
 578 UNIX history graphing project
 579 URL: http://minnie.tuhs.org/Unix_History/index.html
 580
 581 UNIX history
 582 URL: http://www.levenez.com/unix/
 583
 584 James Howard: The BSD Family Tree
 585 URL: http://ezine.daemonnews.org/200104/bsd_family.html
 586 ("what are the differences between FreeBSD, NetBSD, and OpenBSD?")
 587
 588
 589 Acknowledgments
 590 ---------------
 591
 592 Josh Gilliam for suggestions, bug fixes, and finding very old
 593 original BSD announcements from Usenet or tapes.
 594
 595 Steven M. Schultz for providing 2.8BSD, 2.10BSD, 2.11BSD manual pages.
 596
 597 --
 598 Copyright (c) 1997-2007 Wolfram Schneider <wosch@FreeBSD.ORG>
 599 URL: http://cvsweb.freebsd.org/src/share/misc/bsd-family-tree
 600
 601 $FreeBSD: src/share/misc/bsd-family-tree,v 1.148 2011/11/02 14:28:36 maxim Exp $