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  |     |              |      |             OpenBSD 4.9                 |
 250  |     `-----.     Mac OS X  |                 |                       |
 251  |            \      10.7    |                 |                       |
 252  |             |      |      |             OpenBSD 5.0                 |
 253  *--FreeBSD    |      |      |                 |                       |
 254  |    9.0      |      |      |                 |               DragonFly 3.0.1
 255  |     v    FreeBSD   |      |                 |                       |
 256  |            8.3     |      |             OpenBSD 5.1                 |
 257  |                 Mac OS X  |                 |                       |
 258  |                   10.8    |                 |                       |
 259  |                    |   NetBSD 6.0           |                       |
 260  |                    |      |                 |                       |
 261 FreeBSD 10 -current   |  NetBSD -current  OpenBSD -current             |
 262  |                    |      |                 |                       |
 263  v                    v      v                 v                       v
 264
 265 Time
 266 ----------------
 267
 268 Time tolerance +/- 6 months, depending on which book/article you read; if it
 269 was the announcement in Usenet or if it was available as tape.
 270
 271 [44B] McKusick, Marshall Kirk, Keith Bostic, Michael J Karels,
 272         and John Quarterman. The Design and Implementation of
 273         the 4.4BSD Operating System.
 274 [APL] Apple website [http://www.apple.com/macosx/]
 275 [BSDI] Berkeley Software Design, Inc.
 276 [DFB] DragonFlyBSD Project, The.
 277 [DOC] README, COPYRIGHT on tape.
 278 [FBD] FreeBSD Project, The.
 279 [KB]  Keith Bostic. BSD2.10 available from Usenix. comp.unix.sources,
 280         Volume 11, Info 4, April, 1987.
 281 [KKK] Mike Karels, Kirk McKusick, and Keith Bostic. tahoe announcement.
 282         comp.bugs.4bsd.ucb-fixes, June 15, 1988.
 283 [KSJ] Michael J. Karels, Carl F. Smith, and William F. Jolitz.
 284         Changes in the Kernel in 2.9BSD. Second Berkeley Software
 285         Distribution UNIX Version 2.9, July, 1983.
 286 [NBD] NetBSD Project, The.
 287 [OBD] OpenBSD Project, The.
 288 [QCU] Salus, Peter H. A quarter century of UNIX.
 289 [SMS] Steven M. Schultz. 2.11BSD, UNIX for the PDP-11.
 290 [TUHS] The Unix Historical Society.  http://minnie.tuhs.org/Unix_History/.
 291 [USE] Usenet announcement.
 292 [WRS] Wind River Systems, Inc.
 293 [dmr] Dennis Ritchie, via E-Mail
 294
 295 Multics                 1965
 296 UNIX                    Summer 1969
 297                                 DEC PDP-7
 298 First   Edition         1971-11-03 [QCU]
 299                                 DEC PDP-11/20, Assembler
 300 Second  Edition         1972-06-12 [QCU]
 301                                 10 UNIX installations
 302 Third   Edition         1973-02-xx [QCU]
 303                                 Pipes, 16 installations
 304 Fourth  Edition         1973-11-xx [QCU]
 305                                 rewriting in C effected,
 306                                 above 30 installations
 307 Fifth   Edition         1974-06-xx [QCU]
 308                                 above 50 installations
 309 Sixth   Edition         1975-05-xx [QCU]
 310                                 port to DEC Vax
 311 Seventh Edition         1979-01-xx [QCU]
 312                                 first portable UNIX
 313 Eighth  Edition         1985-02-xx [QCU]
 314                                 VAX 11/750, VAX 11/780 [dmr]
 315                                 descended from 4.1c BSD [dmr]
 316                                 descended from 4.1 BSD [44B]
 317                         scooping-out and replacement of the character-device
 318                         and networking part by the streams mechanism
 319
 320 Ninth   Edition         1986-09-xx [QCU]
 321 Tenth   Edition         1989-10-xx [QCU]
 322
 323 1BSD                    late 1977
 324                         1978-03-09 [QCU]
 325                                 PDP-11, Pascal, ex(1)
 326                                 30 free copies of 1BSD sent out
 327                                 35 tapes sold for 50 USD [QCU]
 328 2BSD                    mid 1978 [QCU] 1979-05-10 [TUHS]
 329                                 75 2BSD tapes shipped
 330 2.79BSD                 1980-04-xx [TUHS]
 331 2.8BSD                  1981-07-xx [KSJ]
 332
 333 2.8.1BSD                1982-01-xx [QCU]
 334                                 set of performance improvements
 335 2.9BSD                  1983-07-xx [KSJ]
 336 2.9.1BSD                1983-11-xx [TUHS]
 337 2.9BSD-Seismo           1985-08-xx [SMS]
 338 2.10BSD                 1987-04-xx [KKK]
 339 2.10.1BSD               1989-01-xx [SMS]
 340 2.11BSD                 1992-02-xx [SMS]
 341 2.11BSD rev #430        1999-12-13 [SMS]
 342
 343 32V                     1978-1[01]-xx [QCU]
 344 3BSD                    late 1979 [QCU] March 1980 [TUHS]
 345                                 virtual memory, page replacement,
 346                                 demand paging
 347 4.0BSD                  1980-10-xx
 348 4.1BSD                  1981-07-08 [DOC]
 349 4.1aBSD                 1982-04-xx
 350                                 alpha release, 100 sites, networking [44B]
 351 4.1bBSD                         internal release, fast filesystem [44B]
 352 4.1cBSD                 late 1982
 353                                 beta release, IPC [44B]
 354 4.2BSD                  1983-09-xx [QCU]
 355                         1983-08-03 [DOC]
 356 4.3BSD                  1986-06-xx [QCU]
 357                         1986-04-05 [KB], [DOC]
 358 4.3BSD Tahoe            1988-06-15 [QCU], [DOC]
 359 4.3BSD NET/1            1988-11-xx [QCU]
 360                         1989-01-01 [DOC]
 361 4.3BSD Reno             1990-06-29 [QCU], [DOC]
 362 4.3BSD NET/2            1991-06-28 [QCU], [DOC]
 363
 364 BSD/386 ALPHA           1991-12-xx [BSDI]
 365                                 first code released to people outside BSDI
 366 386BSD 0.0              1992-02-xx [DOC]
 367 BSD/386 0.3.1           1992-04-xx [BSDI] first ext. beta; B customers
 368 BSD/386 0.3.3           1992-06-xx [BSDI] first CDROM version
 369 386BSD 0.1              1992-07-28 [DOC]
 370 4.4BSD Alpha            1992-07-07
 371 BSD/386 0.9.3           1992-10-xx [BSDI]
 372                                 first external gamma; G customers
 373 BSD/386 0.9.4           1992-12-xx [BSDI]
 374                                 would have been 1.0 except for request
 375                                 for preliminary injunction
 376 BSD/386 1.0             1993-03-xx [BSDI]
 377                                 injunction denied; first official release
 378 NetBSD 0.8              1993-04-20 [NBD]
 379 4.4BSD                  1993-06-01 [USE]
 380 NetBSD 0.9              1993-08-23 [NBD]
 381 FreeBSD 1.0             1993-11-01 [FBD]
 382 FreeBSD 1.0.2           1993-11-14 [FBD]
 383                                 supersedes 1.0 13 days after release.
 384 BSD/386 1.1             1994-02-xx [BSDI]
 385 4.4BSD Lite             1994-03-01 [USE]
 386 FreeBSD 1.1             1994-05-07 [FBD]
 387 FreeBSD 1.1.5           1994-06-30 [FBD]
 388 FreeBSD 1.1.5.1         1994-07-05 [FBD]
 389                                 supersedes 1.1.5 5 days after release.
 390 NetBSD 1.0              1994-10-26 [NBD]
 391 386BSD 1.0              1994-11-12 [USE]
 392 FreeBSD 2.0             1994-11-23 [FBD]
 393 BSD/OS 2.0              1995-01-xx [BSDI] 4.4 lite based
 394 FreeBSD 2.0.5           1995-06-10 [FBD]
 395 BSD/OS 2.0.1            1995-06-xx [BSDI]
 396 4.4BSD Lite Release 2   1995-06-xx [44B]
 397                                 the true final distribution from the CSRG
 398 FreeBSD 2.1.0           1995-11-19 [FBD]
 399 NetBSD 1.1              1995-11-26 [NBD]
 400 BSD/OS 2.1              1996-01-xx [BSDI]
 401 FreeBSD 2.1.5           1996-07-14 [FBD]
 402 NetBSD 1.2              1996-10-04 [NBD]
 403 OpenBSD 2.0             1996-10-18 [OBD]
 404 FreeBSD 2.1.6           1996-11-16 [FBD]
 405 FreeBSD 2.1.6.1         1996-11-25 [FBD] (sendmail security release)
 406 Rhapsody                1997-xx-xx
 407 FreeBSD 2.1.7           1997-02-20 [FBD]
 408 BSD/OS 3.0              1997-02-xx [BSDI] 4.4 lite2 based
 409 FreeBSD 2.2.0           1997-03-16 [FBD]
 410 FreeBSD 2.2.1           1997-03-25 [FBD]
 411 FreeBSD 2.2.2           1997-05-16 [FBD]
 412 NetBSD 1.2.1            1997-05-20 [NBD] (patch release)
 413 OpenBSD 2.1             1997-06-01 [OBD]
 414 FreeBSD 2.2.5           1997-10-22 [FBD]
 415 OpenBSD 2.2             1997-12-01 [OBD]
 416 NetBSD 1.3              1998-01-04 [NBD]
 417 FreeBSD 2.2.6           1998-03-25 [FBD]
 418 NetBSD 1.3.1            1998-03-09 [NBD] (patch release)
 419 BSD/OS 3.1              1998-03-xx [BSDI]
 420 OpenBSD 2.3             1998-05-19 [OBD]
 421 NetBSD 1.3.2            1998-05-29 [NBD] (patch release)
 422 FreeBSD 2.2.7           1998-07-22 [FBD]
 423 BSD/OS 4.0              1998-08-xx [BSDI]
 424                                 2-lock MP support, ELF executables
 425 FreeBSD 3.0             1998-10-16 [FBD]
 426                                 FreeBSD-3.0 is a snapshot from -current,
 427                                 while 3.1 and 3.2 are from 3.x-stable which
 428                                 was branched quite some time after 3.0-release
 429 FreeBSD 2.2.8           1998-11-29 [FBD]
 430 OpenBSD 2.4             1998-12-01 [OBD]
 431 NetBSD 1.3.3            1998-12-23 [NBD] (patch release)
 432 FreeBSD 3.1             1999-02-15 [FBD]
 433 BSD/OS 4.0.1            1999-03-xx [BSDI]
 434 NetBSD 1.4              1999-05-12 [NBD]
 435 FreeBSD 3.2             1999-05-17 [FBD]
 436 OpenBSD 2.5             1999-05-19 [OBD]
 437 NetBSD 1.4.1            1999-08-26 [NBD] (patch release)
 438 FreeBSD 3.3             1999-09-17 [FBD]
 439 OpenBSD 2.6             1999-12-01 [OBD]
 440 FreeBSD 3.4             1999-12-20 [FBD]
 441 BSD/OS 4.1              1999-12-xx [BSDI]
 442 FreeBSD 4.0             2000-03-13 [FBD]
 443 NetBSD 1.4.2            2000-03-19 [NBD] (patch release)
 444 OpenBSD 2.7             2000-06-15 [OBD]
 445 FreeBSD 3.5             2000-06-24 [FBD]
 446 FreeBSD 4.1             2000-07-27 [FBD]
 447 FreeBSD 3.5.1           2000-07-28 [FBD]
 448 FreeBSD 4.1.1           2000-09-25 [FBD] (a network-only patch release)
 449 FreeBSD 4.2             2000-11-21 [FBD]
 450 NetBSD 1.4.3            2000-11-25 [NBD] (patch release)
 451 BSD/OS 4.2              2000-11-29 [BSDI]
 452 OpenBSD 2.8             2000-12-01 [OBD]
 453 NetBSD 1.5              2000-12-06 [NBD]
 454 Mac OS X 10.0           2001-03-24 [APL]
 455 FreeBSD 4.3             2001-04-20 [FBD]
 456 OpenBSD 2.9             2001-06-01 [OBD]
 457 NetBSD 1.5.1            2001-07-11 [NBD] (patch release)
 458 NetBSD 1.5.2            2001-09-13 [NBD] (patch release)
 459 FreeBSD 4.4             2001-09-18 [FBD]
 460 Mac OS X 10.1           2001-09-29 [APL]
 461 OpenBSD 3.0             2001-12-01 [OBD]
 462 FreeBSD 4.5             2002-01-29 [FBD]
 463 BSD/OS 4.3              2002-03-14 [WRS]
 464 OpenBSD 3.1             2002-05-19 [OBD]
 465 FreeBSD 4.6             2002-06-15 [FBD]
 466 NetBSD 1.5.3            2002-07-22 [NBD] (patch release)
 467 FreeBSD 4.6.2           2002-08-15 [FBD] (patch release)
 468 Mac OS X 10.2           2002-08-23 [APL]
 469 NetBSD 1.6              2002-09-14 [NBD]
 470 FreeBSD 4.7             2002-10-08 [FBD]
 471 OpenBSD 3.2             2002-11-01 [OBD]
 472 FreeBSD 5.0             2003-01-17 [FBD]
 473                                 FreeBSD 5.0 is a separate branch off of
 474                                 -current, similar to 3.0.
 475 FreeBSD 4.8             2003-04-03 [FBD]
 476 NetBSD 1.6.1            2003-04-21 [NBD] (patch release)
 477 OpenBSD 3.3             2003-05-01 [OBD]
 478 BSD/OS 5.0              2003-05-?? [WRS]
 479 FreeBSD 5.1             2003-06-09 [FBD]
 480 Mac OS X 10.3           2003-10-24 [APL]
 481 FreeBSD 4.9             2003-10-28 [FBD]
 482 BSD/OS 5.1 ISE          2003-10-?? [WRS] (final version)
 483 OpenBSD 3.4             2003-11-01 [OBD]
 484 FreeBSD 5.2             2004-01-12 [FBD]
 485 FreeBSD 5.2.1           2004-02-22 [FBD] (patch release)
 486 NetBSD 1.6.2            2004-03-01 [NBD] (patch release)
 487 OpenBSD 3.5             2004-04-01 [OBD]
 488 FreeBSD 4.10            2004-05-27 [FBD]
 489 DragonFly 1.0           2004-07-12 [DFB]
 490 OpenBSD 3.6             2004-10-29 [OBD]
 491 FreeBSD 5.3             2004-11-06 [FBD]
 492 NetBSD 2.0              2004-12-09 [NBD]
 493 FreeBSD 4.11            2005-01-25 [FBD]
 494 DragonFly 1.2.0         2005-04-08 [DFB]
 495 NetBSD 2.0.2            2005-04-14 [NBD] (security/critical release)
 496 Mac OS X 10.4           2005-04-29 [APL]
 497 FreeBSD 5.4             2005-05-09 [FBD]
 498 OpenBSD 3.7             2005-05-19 [OBD]
 499 NetBSD 2.0.3            2005-10-31 [NBD] (security/critical release)
 500 OpenBSD 3.8             2005-11-01 [OBD]
 501 FreeBSD 6.0             2005-11-01 [FBD]
 502 NetBSD 2.1              2005-11-02 [NBD]
 503 NetBSD 3.0              2005-12-23 [NBD]
 504 DragonFly 1.4.0         2006-01-08 [DFB]
 505 OpenBSD 3.9             2006-05-01 [OBD]
 506 FreeBSD 6.1             2006-05-08 [FBD]
 507 FreeBSD 5.5             2006-05-25 [FBD]
 508 NetBSD 3.0.1            2006-07-24 [NBD] (security/critical release)
 509 DragonFly 1.6.0         2006-07-24 [DFB]
 510 OpenBSD 4.0             2006-11-01 [OBD]
 511 NetBSD 3.0.2            2006-11-04 [NBD] (security/critical release)
 512 NetBSD 3.1              2006-11-04 [NBD]
 513 FreeBSD 6.2             2007-01-15 [FBD]
 514 DragonFly 1.8.0         2007-01-30 [DFB]
 515 OpenBSD 4.1             2007-05-01 [OBD]
 516 DragonFly 1.10.0        2007-08-06 [DFB]
 517 Mac OS X 10.5           2007-10-26 [APL]
 518 OpenBSD 4.2             2007-11-01 [OBD]
 519 NetBSD 4.0              2007-12-19 [NBD]
 520 FreeBSD 6.3             2008-01-18 [FBD]
 521 DragonFly 1.12.0        2008-02-26 [DFB]
 522 FreeBSD 7.0             2008-02-27 [FBD]
 523 OpenBSD 4.3             2008-05-01 [OBD]
 524 DragonFly 2.0.0         2008-07-21 [DFB]
 525 OpenBSD 4.4             2008-11-01 [OBD]
 526 FreeBSD 6.4             2008-11-28 [FBD]
 527 FreeBSD 7.1             2009-01-04 [FBD]
 528 DragonFly 2.2.0         2009-02-17 [DFB]
 529 NetBSD 5.0              2009-04-29 [NBD]
 530 OpenBSD 4.5             2009-05-01 [OBD]
 531 FreeBSD 7.2             2009-05-04 [FBD]
 532 Mac OS X 10.6           2009-06-08 [APL]
 533 DragonFly 2.4.0         2009-09-16 [DFB]
 534 OpenBSD 4.6             2009-10-18 [OBD]
 535 FreeBSD 8.0             2009-11-26 [FBD]
 536 FreeBSD 7.3             2010-03-23 [FBD]
 537 DragonFly 2.6.0         2010-03-28 [DFB]
 538 OpenBSD 4.7             2010-05-19 [OBD]
 539 FreeBSD 8.1             2010-07-24 [FBD]
 540 DragonFly 2.8.2         2010-10-30 [DFB]
 541 OpenBSD 4.8             2010-11-01 [OBD]
 542 NetBSD 5.1              2010-11-19 [NBD]
 543 FreeBSD 7.4             2011-02-24 [FBD]
 544 FreeBSD 8.2             2011-02-24 [FBD]
 545 DragonFly 2.10.1        2011-04-26 [DFB]
 546 OpenBSD 4.9             2011-05-01 [OBD]
 547 Mac OS X 10.7           2011-07-20 [APL]
 548 OpenBSD 5.0             2011-11-01 [OBD]
 549 FreeBSD 9.0             2012-01-12 [FBD]
 550 DragonFly 3.0.1         2012-02-21 [DFB]
 551 FreeBSD 8.3             2012-04-18 [FBD]
 552 OpenBSD 5.1             2012-05-01 [OBD]
 553 Mac OS X 10.8           2012-07-25 [APL]
 554 NetBSD 6.0              2012-10-17 [NBD]
 555
 556 Bibliography
 557 ------------------------
 558
 559 Leffler, Samuel J., Marshall Kirk McKusick, Michael J Karels and John
 560 Quarterman. The Design and Implementation of the 4.3BSD UNIX Operating
 561 System. Reading, Mass. Addison-Wesley, 1989. ISBN 0-201-06196-1
 562
 563 Salus, Peter H. A quarter century of UNIX. Addison-Wesley Publishing
 564 Company, Inc., 1994. ISBN 0-201-54777-5
 565
 566 McKusick, Marshall Kirk, Keith Bostic, Michael J Karels, and John
 567 Quarterman. The Design and Implementation of the 4.4BSD Operating
 568 System. Reading, Mass. Addison-Wesley, 1996. ISBN 0-201-54979-4
 569
 570 McKusick, Marshall Kirk, George Neville-Neil. The Design and
 571 Implementation of the FreeBSD Operating System.
 572 Addison-Wesley Professional, Published: Aug 2, 2004. ISBN 0-201-70245-2
 573
 574 Doug McIlroy. Research Unix Reader.
 575
 576 Michael G. Brown. The Role of BSD in the Development of Unix.
 577 Presented to the Tasmanian Unix Special Interest Group of the
 578 Australian Computer Society, Hobart, August 1993.
 579
 580 Peter H. Salus. Unix at 25. Byte Magazine, October 1994.
 581 URL: http://www.byte.com/art/9410/sec8/art3.htm
 582
 583 Andreas Klemm, Lars Köller. If you're going to San Francisco ...
 584 Die freien BSD-Varianten von Unix. c't April 1997, page 368ff.
 585
 586 BSD Release Announcements collection.
 587 URL: http://www.FreeBSD.org/releases/
 588
 589 BSD Hypertext Man Pages
 590 URL: http://www.FreeBSD.org/cgi/man.cgi
 591
 592 UNIX history graphing project
 593 URL: http://minnie.tuhs.org/Unix_History/index.html
 594
 595 UNIX history
 596 URL: http://www.levenez.com/unix/
 597
 598 James Howard: The BSD Family Tree
 599 URL: http://ezine.daemonnews.org/200104/bsd_family.html
 600 ("what are the differences between FreeBSD, NetBSD, and OpenBSD?")
 601
 602
 603 Acknowledgments
 604 ---------------
 605
 606 Josh Gilliam for suggestions, bug fixes, and finding very old
 607 original BSD announcements from Usenet or tapes.
 608
 609 Steven M. Schultz for providing 2.8BSD, 2.10BSD, 2.11BSD manual pages.
 610
 611 --
 612 Copyright (c) 1997-2012 Wolfram Schneider <wosch@FreeBSD.ORG>
 613 URL: http://cvsweb.freebsd.org/src/share/misc/bsd-family-tree
 614
 615 $FreeBSD: src/share/misc/bsd-family-tree,v 1.157 2012/10/18 15:52:00 pluknet Exp $