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 FreeBSD 9 -current    |  NetBSD -current  OpenBSD -current             |
 252  |                    |      |                 |                       |
 253  v                    v      v                 v                       v
 254
 255 Time
 256 ----------------
 257
 258 Time tolerance +/- 6 months, depending on which book/article you read; if it
 259 was the announcement in Usenet or if it was available as tape.
 260
 261 [44B] McKusick, Marshall Kirk, Keith Bostic, Michael J Karels,
 262         and John Quarterman. The Design and Implementation of
 263         the 4.4BSD Operating System.
 264 [APL] Apple website [http://www.apple.com/macosx/]
 265 [BSDI] Berkeley Software Design, Inc.
 266 [DFB] DragonFlyBSD Project, The.
 267 [DOC] README, COPYRIGHT on tape.
 268 [FBD] FreeBSD Project, The.
 269 [KB]  Keith Bostic. BSD2.10 available from Usenix. comp.unix.sources,
 270         Volume 11, Info 4, April, 1987.
 271 [KKK] Mike Karels, Kirk McKusick, and Keith Bostic. tahoe announcement.
 272         comp.bugs.4bsd.ucb-fixes, June 15, 1988.
 273 [KSJ] Michael J. Karels, Carl F. Smith, and William F. Jolitz.
 274         Changes in the Kernel in 2.9BSD. Second Berkeley Software
 275         Distribution UNIX Version 2.9, July, 1983.
 276 [NBD] NetBSD Project, The.
 277 [OBD] OpenBSD Project, The.
 278 [QCU] Salus, Peter H. A quarter century of UNIX.
 279 [SMS] Steven M. Schultz. 2.11BSD, UNIX for the PDP-11.
 280 [TUHS] The Unix Historical Society.  http://minnie.tuhs.org/Unix_History/.
 281 [USE] Usenet announcement.
 282 [WRS] Wind River Systems, Inc.
 283 [dmr] Dennis Ritchie, via E-Mail
 284
 285 Multics                 1965
 286 UNIX                    Summer 1969
 287                                 DEC PDP-7
 288 First   Edition         1971-11-03 [QCU]
 289                                 DEC PDP-11/20, Assembler
 290 Second  Edition         1972-06-12 [QCU]
 291                                 10 UNIX installations
 292 Third   Edition         1973-02-xx [QCU]
 293                                 Pipes, 16 installations
 294 Fourth  Edition         1973-11-xx [QCU]
 295                                 rewriting in C effected,
 296                                 above 30 installations
 297 Fifth   Edition         1974-06-xx [QCU]
 298                                 above 50 installations
 299 Sixth   Edition         1975-05-xx [QCU]
 300                                 port to DEC Vax
 301 Seventh Edition         1979-01-xx [QCU]
 302                                 first portable UNIX
 303 Eighth  Edition         1985-02-xx [QCU]
 304                                 VAX 11/750, VAX 11/780 [dmr]
 305                                 descended from 4.1c BSD [dmr]
 306                                 descended from 4.1 BSD [44B]
 307                         scooping-out and replacement of the character-device
 308                         and networking part by the streams mechanism
 309
 310 Ninth   Edition         1986-09-xx [QCU]
 311 Tenth   Edition         1989-10-xx [QCU]
 312
 313 1BSD                    late 1977
 314                         1978-03-09 [QCU]
 315                                 PDP-11, Pascal, ex(1)
 316                                 30 free copies of 1BSD sent out
 317                                 35 tapes sold for 50 USD [QCU]
 318 2BSD                    mid 1978 [QCU] 1979-05-10 [TUHS]
 319                                 75 2BSD tapes shipped
 320 2.79BSD                 1980-04-xx [TUHS]
 321 2.8BSD                  1981-07-xx [KSJ]
 322
 323 2.8.1BSD                1982-01-xx [QCU]
 324                                 set of performance improvements
 325 2.9BSD                  1983-07-xx [KSJ]
 326 2.9.1BSD                1983-11-xx [TUHS]
 327 2.9BSD-Seismo           1985-08-xx [SMS]
 328 2.10BSD                 1987-04-xx [KKK]
 329 2.10.1BSD               1989-01-xx [SMS]
 330 2.11BSD                 1992-02-xx [SMS]
 331 2.11BSD rev #430        1999-12-13 [SMS]
 332
 333 32V                     1978-1[01]-xx [QCU]
 334 3BSD                    late 1979 [QCU] March 1980 [TUHS]
 335                                 virtual memory, page replacement,
 336                                 demand paging
 337 4.0BSD                  1980-10-xx
 338 4.1BSD                  1981-07-08 [DOC]
 339 4.1aBSD                 1982-04-xx
 340                                 alpha release, 100 sites, networking [44B]
 341 4.1bBSD                         internal release, fast filesystem [44B]
 342 4.1cBSD                 late 1982
 343                                 beta release, IPC [44B]
 344 4.2BSD                  1983-09-xx [QCU]
 345                         1983-08-03 [DOC]
 346 4.3BSD                  1986-06-xx [QCU]
 347                         1986-04-05 [KB], [DOC]
 348 4.3BSD Tahoe            1988-06-15 [QCU], [DOC]
 349 4.3BSD NET/1            1988-11-xx [QCU]
 350                         1989-01-01 [DOC]
 351 4.3BSD Reno             1990-06-29 [QCU], [DOC]
 352 4.3BSD NET/2            1991-06-28 [QCU], [DOC]
 353
 354 BSD/386 ALPHA           1991-12-xx [BSDI]
 355                                 first code released to people outside BSDI
 356 386BSD 0.0              1992-02-xx [DOC]
 357 BSD/386 0.3.1           1992-04-xx [BSDI] first ext. beta; B customers
 358 BSD/386 0.3.3           1992-06-xx [BSDI] first CDROM version
 359 386BSD 0.1              1992-07-28 [DOC]
 360 4.4BSD Alpha            1992-07-07
 361 BSD/386 0.9.3           1992-10-xx [BSDI]
 362                                 first external gamma; G customers
 363 BSD/386 0.9.4           1992-12-xx [BSDI]
 364                                 would have been 1.0 except for request
 365                                 for preliminary injunction
 366 BSD/386 1.0             1993-03-xx [BSDI]
 367                                 injunction denied; first official release
 368 NetBSD 0.8              1993-04-20 [NBD]
 369 4.4BSD                  1993-06-01 [USE]
 370 NetBSD 0.9              1993-08-23 [NBD]
 371 FreeBSD 1.0             1993-11-01 [FBD]
 372 FreeBSD 1.0.2           1993-11-14 [FBD]
 373                                 supersedes 1.0 13 days after release.
 374 BSD/386 1.1             1994-02-xx [BSDI]
 375 4.4BSD Lite             1994-03-01 [USE]
 376 FreeBSD 1.1             1994-05-07 [FBD]
 377 FreeBSD 1.1.5           1994-06-30 [FBD]
 378 FreeBSD 1.1.5.1         1994-07-05 [FBD]
 379                                 supersedes 1.1.5 5 days after release.
 380 NetBSD 1.0              1994-10-26 [NBD]
 381 386BSD 1.0              1994-11-12 [USE]
 382 FreeBSD 2.0             1994-11-23 [FBD]
 383 BSD/OS 2.0              1995-01-xx [BSDI] 4.4 lite based
 384 FreeBSD 2.0.5           1995-06-10 [FBD]
 385 BSD/OS 2.0.1            1995-06-xx [BSDI]
 386 4.4BSD Lite Release 2   1995-06-xx [44B]
 387                                 the true final distribution from the CSRG
 388 FreeBSD 2.1.0           1995-11-19 [FBD]
 389 NetBSD 1.1              1995-11-26 [NBD]
 390 BSD/OS 2.1              1996-01-xx [BSDI]
 391 FreeBSD 2.1.5           1996-07-14 [FBD]
 392 NetBSD 1.2              1996-10-04 [NBD]
 393 OpenBSD 2.0             1996-10-18 [OBD]
 394 FreeBSD 2.1.6           1996-11-16 [FBD]
 395 FreeBSD 2.1.6.1         1996-11-25 [FBD] (sendmail security release)
 396 Rhapsody                1997-xx-xx
 397 FreeBSD 2.1.7           1997-02-20 [FBD]
 398 BSD/OS 3.0              1997-02-xx [BSDI] 4.4 lite2 based
 399 FreeBSD 2.2.0           1997-03-16 [FBD]
 400 FreeBSD 2.2.1           1997-03-25 [FBD]
 401 FreeBSD 2.2.2           1997-05-16 [FBD]
 402 NetBSD 1.2.1            1997-05-20 [NBD] (patch release)
 403 OpenBSD 2.1             1997-06-01 [OBD]
 404 FreeBSD 2.2.5           1997-10-22 [FBD]
 405 OpenBSD 2.2             1997-12-01 [OBD]
 406 NetBSD 1.3              1998-01-04 [NBD]
 407 FreeBSD 2.2.6           1998-03-25 [FBD]
 408 NetBSD 1.3.1            1998-03-09 [NBD] (patch release)
 409 BSD/OS 3.1              1998-03-xx [BSDI]
 410 OpenBSD 2.3             1998-05-19 [OBD]
 411 NetBSD 1.3.2            1998-05-29 [NBD] (patch release)
 412 FreeBSD 2.2.7           1998-07-22 [FBD]
 413 BSD/OS 4.0              1998-08-xx [BSDI]
 414                                 2-lock MP support, ELF executables
 415 FreeBSD 3.0             1998-10-16 [FBD]
 416                                 FreeBSD-3.0 is a snapshot from -current,
 417                                 while 3.1 and 3.2 are from 3.x-stable which
 418                                 was branched quite some time after 3.0-release
 419 FreeBSD 2.2.8           1998-11-29 [FBD]
 420 OpenBSD 2.4             1998-12-01 [OBD]
 421 NetBSD 1.3.3            1998-12-23 [NBD] (patch release)
 422 FreeBSD 3.1             1999-02-15 [FBD]
 423 BSD/OS 4.0.1            1999-03-xx [BSDI]
 424 NetBSD 1.4              1999-05-12 [NBD]
 425 FreeBSD 3.2             1999-05-17 [FBD]
 426 OpenBSD 2.5             1999-05-19 [OBD]
 427 NetBSD 1.4.1            1999-08-26 [NBD] (patch release)
 428 FreeBSD 3.3             1999-09-17 [FBD]
 429 OpenBSD 2.6             1999-12-01 [OBD]
 430 FreeBSD 3.4             1999-12-20 [FBD]
 431 BSD/OS 4.1              1999-12-xx [BSDI]
 432 FreeBSD 4.0             2000-03-13 [FBD]
 433 NetBSD 1.4.2            2000-03-19 [NBD] (patch release)
 434 OpenBSD 2.7             2000-06-15 [OBD]
 435 FreeBSD 3.5             2000-06-24 [FBD]
 436 FreeBSD 4.1             2000-07-27 [FBD]
 437 FreeBSD 3.5.1           2000-07-28 [FBD]
 438 FreeBSD 4.1.1           2000-09-25 [FBD] (a network-only patch release)
 439 FreeBSD 4.2             2000-11-21 [FBD]
 440 NetBSD 1.4.3            2000-11-25 [NBD] (patch release)
 441 BSD/OS 4.2              2000-11-29 [BSDI]
 442 OpenBSD 2.8             2000-12-01 [OBD]
 443 NetBSD 1.5              2000-12-06 [NBD]
 444 Mac OS X 10.0           2001-03-24 [APL]
 445 FreeBSD 4.3             2001-04-20 [FBD]
 446 OpenBSD 2.9             2001-06-01 [OBD]
 447 NetBSD 1.5.1            2001-07-11 [NBD] (patch release)
 448 NetBSD 1.5.2            2001-09-13 [NBD] (patch release)
 449 FreeBSD 4.4             2001-09-18 [FBD]
 450 Mac OS X 10.1           2001-09-29 [APL]
 451 OpenBSD 3.0             2001-12-01 [OBD]
 452 FreeBSD 4.5             2002-01-29 [FBD]
 453 BSD/OS 4.3              2002-03-14 [WRS]
 454 OpenBSD 3.1             2002-05-19 [OBD]
 455 FreeBSD 4.6             2002-06-15 [FBD]
 456 NetBSD 1.5.3            2002-07-22 [NBD] (patch release)
 457 FreeBSD 4.6.2           2002-08-15 [FBD] (patch release)
 458 Mac OS X 10.2           2002-08-23 [APL]
 459 NetBSD 1.6              2002-09-14 [NBD]
 460 FreeBSD 4.7             2002-10-08 [FBD]
 461 OpenBSD 3.2             2002-11-01 [OBD]
 462 FreeBSD 5.0             2003-01-17 [FBD]
 463                                 FreeBSD 5.0 is a separate branch off of
 464                                 -current, similar to 3.0.
 465 FreeBSD 4.8             2003-04-03 [FBD]
 466 NetBSD 1.6.1            2003-04-21 [NBD] (patch release)
 467 OpenBSD 3.3             2003-05-01 [OBD]
 468 BSD/OS 5.0              2003-05-?? [WRS]
 469 FreeBSD 5.1             2003-06-09 [FBD]
 470 Mac OS X 10.3           2003-10-24 [APL]
 471 FreeBSD 4.9             2003-10-28 [FBD]
 472 BSD/OS 5.1 ISE          2003-10-?? [WRS] (final version)
 473 OpenBSD 3.4             2003-11-01 [OBD]
 474 FreeBSD 5.2             2004-01-12 [FBD]
 475 FreeBSD 5.2.1           2004-02-22 [FBD] (patch release)
 476 NetBSD 1.6.2            2004-03-01 [NBD] (patch release)
 477 OpenBSD 3.5             2004-04-01 [OBD]
 478 FreeBSD 4.10            2004-05-27 [FBD]
 479 DragonFly 1.0           2004-07-12 [DFB]
 480 OpenBSD 3.6             2004-10-29 [OBD]
 481 FreeBSD 5.3             2004-11-06 [FBD]
 482 NetBSD 2.0              2004-12-09 [NBD]
 483 FreeBSD 4.11            2005-01-25 [FBD]
 484 DragonFly 1.2.0         2005-04-08 [DFB]
 485 NetBSD 2.0.2            2005-04-14 [NBD] (security/critical release)
 486 Mac OS X 10.4           2005-04-29 [APL]
 487 FreeBSD 5.4             2005-05-09 [FBD]
 488 OpenBSD 3.7             2005-05-19 [OBD]
 489 NetBSD 2.0.3            2005-10-31 [NBD] (security/critical release)
 490 OpenBSD 3.8             2005-11-01 [OBD]
 491 FreeBSD 6.0             2005-11-01 [FBD]
 492 NetBSD 2.1              2005-11-02 [NBD]
 493 NetBSD 3.0              2005-12-23 [NBD]
 494 DragonFly 1.4.0         2006-01-08 [DFB]
 495 OpenBSD 3.9             2006-05-01 [OBD]
 496 FreeBSD 6.1             2006-05-08 [FBD]
 497 FreeBSD 5.5             2006-05-25 [FBD]
 498 NetBSD 3.0.1            2006-07-24 [NBD] (security/critical release)
 499 DragonFly 1.6.0         2006-07-24 [DFB]
 500 OpenBSD 4.0             2006-11-01 [OBD]
 501 NetBSD 3.0.2            2006-11-04 [NBD] (security/critical release)
 502 NetBSD 3.1              2006-11-04 [NBD]
 503 FreeBSD 6.2             2007-01-15 [FBD]
 504 DragonFly 1.8.0         2007-01-30 [DFB]
 505 OpenBSD 4.1             2007-05-01 [OBD]
 506 DragonFly 1.10.0        2007-08-06 [DFB]
 507 Mac OS X 10.5           2007-10-26 [APL]
 508 OpenBSD 4.2             2007-11-01 [OBD]
 509 NetBSD 4.0              2007-12-19 [NBD]
 510 FreeBSD 6.3             2008-01-18 [FBD]
 511 DragonFly 1.12.0        2008-02-26 [DFB]
 512 FreeBSD 7.0             2008-02-27 [FBD]
 513 OpenBSD 4.3             2008-05-01 [OBD]
 514 DragonFly 2.0.0         2008-07-21 [DFB]
 515 OpenBSD 4.4             2008-11-01 [OBD]
 516 FreeBSD 6.4             2008-11-28 [FBD]
 517 FreeBSD 7.1             2009-01-04 [FBD]
 518 DragonFly 2.2.0         2009-02-17 [DFB]
 519 NetBSD 5.0              2009-04-29 [NBD]
 520 OpenBSD 4.5             2009-05-01 [OBD]
 521 FreeBSD 7.2             2009-05-04 [FBD]
 522 Mac OS X 10.6           2009-06-08 [APL]
 523 DragonFly 2.4.0         2009-09-16 [DFB]
 524 OpenBSD 4.6             2009-10-18 [OBD]
 525 FreeBSD 8.0             2009-11-26 [FBD]
 526 FreeBSD 7.3             2010-03-23 [FBD]
 527 DragonFly 2.6.0         2010-03-28 [DFB]
 528 OpenBSD 4.7             2010-05-19 [OBD]
 529 FreeBSD 8.1             2010-07-24 [FBD]
 530 DragonFly 2.8.2         2010-10-30 [DFB]
 531 OpenBSD 4.8             2010-11-01 [OBD]
 532 NetBSD 5.1              2010-11-19 [NBD]
 533 FreeBSD 7.4             2011-02-24 [FBD]
 534 FreeBSD 8.2             2011-02-24 [FBD]
 535 DragonFly 2.10.1        2011-04-26 [DFB]
 536 OpenBSD 4.9             2011-05-01 [OBD]
 537
 538 Bibliography
 539 ------------------------
 540
 541 Leffler, Samuel J., Marshall Kirk McKusick, Michael J Karels and John
 542 Quarterman. The Design and Implementation of the 4.3BSD UNIX Operating
 543 System. Reading, Mass. Addison-Wesley, 1989. ISBN 0-201-06196-1
 544
 545 Salus, Peter H. A quarter century of UNIX. Addison-Wesley Publishing
 546 Company, Inc., 1994. ISBN 0-201-54777-5
 547
 548 McKusick, Marshall Kirk, Keith Bostic, Michael J Karels, and John
 549 Quarterman. The Design and Implementation of the 4.4BSD Operating
 550 System. Reading, Mass. Addison-Wesley, 1996. ISBN 0-201-54979-4
 551
 552 McKusick, Marshall Kirk, George Neville-Neil. The Design and
 553 Implementation of the FreeBSD Operating System.
 554 Addison-Wesley Professional, Published: Aug 2, 2004. ISBN 0-201-70245-2
 555
 556 Doug McIlroy. Research Unix Reader.
 557
 558 Michael G. Brown. The Role of BSD in the Development of Unix.
 559 Presented to the Tasmanian Unix Special Interest Group of the
 560 Australian Computer Society, Hobart, August 1993.
 561
 562 Peter H. Salus. Unix at 25. Byte Magazine, October 1994.
 563 URL: http://www.byte.com/art/9410/sec8/art3.htm
 564
 565 Andreas Klemm, Lars Köller. If you're going to San Francisco ...
 566 Die freien BSD-Varianten von Unix. c't April 1997, page 368ff.
 567
 568 BSD Release Announcements collection.
 569 URL: http://www.FreeBSD.org/releases/
 570
 571 BSD Hypertext Man Pages
 572 URL: http://www.FreeBSD.org/cgi/man.cgi
 573
 574 UNIX history graphing project
 575 URL: http://minnie.tuhs.org/Unix_History/index.html
 576
 577 UNIX history
 578 URL: http://www.levenez.com/unix/
 579
 580 James Howard: The BSD Family Tree
 581 URL: http://ezine.daemonnews.org/200104/bsd_family.html
 582 ("what are the differences between FreeBSD, NetBSD, and OpenBSD?")
 583
 584
 585 Acknowledgments
 586 ---------------
 587
 588 Josh Gilliam for suggestions, bug fixes, and finding very old
 589 original BSD announcements from Usenet or tapes.
 590
 591 Steven M. Schultz for providing 2.8BSD, 2.10BSD, 2.11BSD manual pages.
 592
 593 --
 594 Copyright (c) 1997-2007 Wolfram Schneider <wosch@FreeBSD.ORG>
 595 URL: http://cvsweb.freebsd.org/src/share/misc/bsd-family-tree
 596
 597 $FreeBSD: src/share/misc/bsd-family-tree,v 1.147 2011/05/22 14:03:30 uqs Exp $