share/misc/bsd-family-tree

   1 The UNIX system family tree: Research and BSD
   2 ---------------------------------------------
   3
   4 First Edition (V1)
   5      |
   6 Second Edition (V2)
   7      |
   8 Third Edition (V3)
   9      |
  10 Fourth Edition (V4)
  11      |
  12 Fifth Edition (V5)
  13      |
  14 Sixth Edition (V6) -----*
  15        \                |
  16         \               |
  17          \              |
  18 Seventh Edition (V7)    |
  19             \           |
  20              \        1BSD
  21              32V        |
  22                \      2BSD---------------*
  23                 \    /                   |
  24                  \  /                    |
  25                   \/                     |
  26                  3BSD                    |
  27                   |                      |
  28                4.0BSD               2.7.9BSD
  29                   |                      |
  30                4.1BSD --------------> 2.8BSD
  31                   |                      |
  32               4.1aBSD -----------\       |
  33                   |                \     |
  34               4.1bBSD                \   |
  35                   |                    \ |
  36       *------ 4.1cBSD --------------> 2.9BSD
  37      /            |                      |
  38 Eighth Edition    |                   2.9BSD-Seismo
  39      |            |                      |
  40      +----<--- 4.2BSD               2.9.1BSD
  41      |            |                      |
  42      +----<--- 4.3BSD -------------> 2.10BSD
  43      |            |               /      |
  44 Ninth Edition     |              / 2.10.1BSD
  45      |         4.3BSD Tahoe-----+        |
  46      |            |              \       |
  47      |            |                \     |
  48      v            |                  2.11BSD
  49 Tenth Edition     |                      |
  50                   |                  2.11BSD rev #430
  51                4.3BSD NET/1              |
  52                   |                      v
  53                4.3BSD Reno
  54                   |
  55    *---------- 4.3BSD NET/2 -------------------+-------------*
  56    |                    |                      |             |
  57 386BSD 0.0              |                      |           BSD/386 ALPHA
  58    |                    |                      |             |
  59 386BSD 0.1 ------------>+                      |           BSD/386 0.3.[13]
  60    |     \              |                  4.4BSD Alpha      |
  61    |     386BSD 1.0     |                      |           BSD/386 0.9.[34]
  62    |                    |                  4.4BSD            |
  63    |                    |                    / |             |
  64    |                    |   4.4BSD-Encumbered  |             |
  65    |                 NetBSD 0.8                |           BSD/386 1.0
  66    |                    |                      |             |
  67 FreeBSD 1.0          NetBSD 0.9                |           BSD/386 1.1
  68    |                    |           .----- 4.4BSD Lite       |
  69 FreeBSD 1.1             |          /   /       |     \       |
  70    |                    |         /   /        |      \      |
  71 FreeBSD 1.1.5       .---|--------'   /         |       \     |
  72    |               /    |           /          |        \    |
  73 FreeBSD 1.1.5.1   /     |          /           |         \   |
  74    |             /   NetBSD 1.0 <-'            |          \  |
  75    |            /       |                      |           \ |
  76 FreeBSD 2.0 <--'        |                      |           BSD/OS 2.0
  77    |                     \                     |             |
  78 FreeBSD 2.0.5             \                    |           BSD/OS 2.0.1
  79    |                 .-----\------------- 4.4BSD Lite2       |
  80    |                 |      \             |  |   |   |       |
  81    |                 | .-----|------Rhapsody |   |   |       |
  82    |                 | |     |        NetBSD 1.3 |   |       |
  83    |                 | |     |           OpenBSD 2.3 |       |
  84    |                 | |     |                BSD/OS 3.0     |
  85 FreeBSD 2.1          | |     |                               |
  86  |   |               | |  NetBSD 1.1 ------.               BSD/OS 2.1
  87  | FreeBSD 2.1.5     | |     |              \                |
  88  |     |             | |  NetBSD 1.2         \             BSD/OS 3.0
  89  | FreeBSD 2.1.6     | |     |  \          OpenBSD 2.0       |
  90  |     |             | |     |   \             |             |
  91  | FreeBSD 2.1.6.1   | |     |    \            |             |
  92  |     |             | |     |     \           |             |
  93  | FreeBSD 2.1.7     | |     |      |          |             |
  94  |     |             | |     |  NetBSD 1.2.1   |             |
  95  | FreeBSD 2.1.7.1   | |     |                 |             |
  96  |                   | |     |                 |             |
  97  |                   | |     |                 |             |
  98  *-FreeBSD 2.2       | |     |                 |             |
  99  |        \          | |     |                 |             |
 100  |     FreeBSD 2.2.1 | |     |                 |             |
 101  |         |         | |     |                 |             |
 102  |     FreeBSD 2.2.2 | |     |             OpenBSD 2.1       |
 103  |         |         | |     |                 |             |
 104  |     FreeBSD 2.2.5 | |     |                 |             |
 105  |         |         | |     |             OpenBSD 2.2       |
 106  |         |         | |  NetBSD 1.3           |             |
 107  |     FreeBSD 2.2.6 | |     |    |            |             |
 108  |         |         | |     | NetBSD 1.3.1    |           BSD/OS 3.1
 109  |         |         | |     |    |        OpenBSD 2.3       |
 110  |         |         | |     | NetBSD 1.3.2    |             |
 111  |     FreeBSD 2.2.7 | |     |    |            |             |
 112  |         |         | |     |    |            |           BSD/OS 4.0
 113  |         v         | |     |    |            |             |
 114  |     FreeBSD 2.2.8 | |     |    |            |             |
 115  |                   | |     |    |        OpenBSD 2.4       |
 116 FreeBSD 3.0 <--------* |     |    v            |             |
 117  |                     |     | NetBSD 1.3.3    |             |
 118  *---FreeBSD 3.1       |     |                 |             |
 119  |       |             |     |                 |           BSD/OS 4.0.1
 120  |   FreeBSD 3.2----*  |  NetBSD 1.4       OpenBSD 2.5       |
 121  |       |          |  |  |  |    |            |             |
 122  |       |          |  |  |  |    |            |             |
 123  |       |          |  |  |  |    |            |             |
 124  |   FreeBSD 3.3    |  |  |  | NetBSD 1.4.1    |             |
 125  |       |          |  |  |  |    |        OpenBSD 2.6       |
 126  |   FreeBSD 3.4    |  |  |  |    |            |             |
 127  |           |      |  |  |  |    |            |           BSD/OS 4.1
 128 FreeBSD 4.0  |      |  |  |  | NetBSD 1.4.2    |             |
 129  |           |      |  |  |  |    |            |             |
 130  |           |      |  |  |  |    |            |             |
 131  |   FreeBSD 3.5    |  |  |  |    |        OpenBSD 2.7       |
 132  |           |      |  |  |  |    |            |             |
 133  |   FreeBSD 3.5.1  |  |  |  |    |            |             |
 134  |                  |  |  |  |    |            |             |
 135  *---FreeBSD 4.1    |  |  |  |    |            |             |
 136  |      |           |  | (?) |    |            |             |
 137  |   FreeBSD 4.1.1  |  |  /  |    |            |             |
 138  |      |           |  | /   |    |            |             |
 139  |   FreeBSD 4.2   Darwin/   | NetBSD 1.4.3    |             |
 140  |      |         Mac OS X   |             OpenBSD 2.8     BSD/OS 4.2
 141  |      |             |      |                 |             |
 142  |      |             |      |                 |             |
 143  |      |           10.0  NetBSD 1.5           |             |
 144  |   FreeBSD 4.3      |      |    |            |             |
 145  |      |             |      |    |        OpenBSD 2.9       |
 146  |      |             |      | NetBSD 1.5.1    |             |
 147  |      |             |      |    |            |             |
 148  |   FreeBSD 4.4-.    |      | NetBSD 1.5.2    |             |
 149  |      |        | Mac OS X  |    |            |             |
 150  |      |        |   10.1    |    |        OpenBSD 3.0       |
 151  |   FreeBSD 4.5 |    |      |    |            |             |
 152  |      |         \   |      |    |            |           BSD/OS 4.3
 153  |   FreeBSD 4.6   \  |      |    |        OpenBSD 3.1       |
 154  |      |           \ |      | NetBSD 1.5.3    |             |
 155  |   FreeBSD 4.6.2 Mac OS X  |                 |             |
 156  |      |            10.2    |                 |             |
 157  |   FreeBSD 4.7      |      |                 |             |
 158  |      |             |   NetBSD 1.6       OpenBSD 3.2       |
 159  |   FreeBSD 4.8      |      |    |            |             |
 160  |      |             |      | NetBSD 1.6.1    |             |
 161  |      |--------.    |      |    |        OpenBSD 3.3     BSD/OS 5.0
 162  |      |         \   |      |    |            |             |
 163  |   FreeBSD 4.9   |  |      |    |        OpenBSD 3.4     BSD/OS 5.1 ISE
 164  |      |          |  |      |    |            |
 165  |      |          |  |      | NetBSD 1.6.2    |
 166  |      |          |  |      |    |            |
 167  |      |          |  |      |    |        OpenBSD 3.5
 168  |      |          |  |      |    v            |
 169  |   FreeBSD 4.10  |  |      |                 |
 170  |      |          |  |      |                 |
 171  |   FreeBSD 4.11  |  |      |                 |
 172  |      |          |  |      |                 |
 173  |      v           `-|------|-----------------|---------------------.
 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  |     V              |      |                 |                       |
 214 FreeBSD 7 -current    |  NetBSD -current  OpenBSD -current             |
 215  |                    |      |                 |                       |
 216  v                    v      v                 v                       v
 217
 218 Time
 219 ----------------
 220
 221 Time tolerance +/- 6 months, depending on which book/article you read; if it
 222 was the announcement in Usenet or if it was available as tape.
 223
 224 [44B] McKusick, Marshall Kirk, Keith Bostic, Michael J Karels,
 225         and John Quarterman. The Design and Implementation of
 226         the 4.4BSD Operating System.
 227 [APL] Apple website [http://www.apple.com/macosx/]
 228 [BSDI] Berkeley Software Design, Inc.
 229 [DFB] DragonFlyBSD Project, The.
 230 [DOC] README, COPYRIGHT on tape.
 231 [FBD] FreeBSD Project, The.
 232 [KB]  Keith Bostic. BSD2.10 available from Usenix. comp.unix.sources,
 233         Volume 11, Info 4, April, 1987.
 234 [KKK] Mike Karels, Kirk McKusick, and Keith Bostic. tahoe announcement.
 235         comp.bugs.4bsd.ucb-fixes, June 15, 1988.
 236 [KSJ] Michael J. Karels, Carl F. Smith, and William F. Jolitz.
 237         Changes in the Kernel in 2.9BSD. Second Berkeley Software
 238         Distribution UNIX Version 2.9, July, 1983.
 239 [NBD] NetBSD Project, The.
 240 [OBD] OpenBSD Project, The.
 241 [QCU] Salus, Peter H. A quarter century of UNIX.
 242 [SMS] Steven M. Schultz. 2.11BSD, UNIX for the PDP-11.
 243 [USE] Usenet announcement.
 244 [WRS] Wind River Systems, Inc.
 245 [dmr] Dennis Ritchie, via E-Mail
 246
 247 Multics                 1965
 248 UNIX                    Summer 1969
 249                                 DEC PDP-7
 250 First   Edition         1971-11-03 [QCU]
 251                                 DEC PDP-11/20, Assembler
 252 Second  Edition         1972-06-12 [QCU]
 253                                 10 UNIX installations
 254 Third   Edition         1973-02-xx [QCU]
 255                                 Pipes, 16 installations
 256 Fourth  Edition         1973-11-xx [QCU]
 257                                 rewriting in C effected,
 258                                 above 30 installations
 259 Fifth   Edition         1974-06-xx [QCU]
 260                                 above 50 installations
 261 Sixth   Edition         1975-05-xx [QCU]
 262                                 port to DEC Vax
 263 Seventh Edition         1979-01-xx [QCU]
 264                                 first portable UNIX
 265 Eighth  Edition         1985-02-xx [QCU]
 266                                 VAX 11/750, VAX 11/780 [dmr]
 267                                 descended from 4.1c BSD [dmr]
 268                                 descended from 4.1 BSD [44B]
 269                         scooping-out and replacement of the character-device
 270                         and networking part by the streams mechanism
 271
 272 Ninth   Edition         1986-09-xx [QCU]
 273 Tenth   Edition         1989-10-xx [QCU]
 274
 275 1BSD                    late 1977
 276                         1978-03-09 [QCU]
 277                                 PDP-11, Pascal, ex(1)
 278                                 30 free copies of 1BSD sent out
 279                                 35 tapes sold for 50 USD [QCU]
 280 2BSD                    mid 1978 [QCU]
 281                                 75 2BSD tapes shipped
 282 2.7.9BSD                ?? [SMS]
 283 2.8BSD                  1981-07-xx [KSJ]
 284
 285 2.8.1BSD                1982-01-xx [QCU]
 286                                 set of performance improvements
 287 2.9BSD                  1983-07-xx [KSJ]
 288 2.9.1BSD                1983-11-xx
 289 2.9BSD-Seismo           1985-08-xx [SMS]
 290 2.10BSD                 1987-04-xx [KKK]
 291 2.10.1BSD               1989-01-xx [SMS]
 292 2.11BSD                 1992-02-xx [SMS]
 293 2.11BSD rev #430        1999-12-13 [SMS]
 294
 295 32V                     1978-1[01]-xx [QCU]
 296 3BSD                    late 1979 [QCU]
 297                                 virtual memory, page replacement,
 298                                 demand paging
 299 4.0BSD                  1980-10-xx
 300 4.1BSD                  1981-07-08 [DOC]
 301 4.1aBSD                 1982-04-xx
 302                                 alpha release, 100 sites, networking [44B]
 303 4.1bBSD                         internal release, fast filesystem [44B]
 304 4.1cBSD                 late 1982
 305                                 beta release, IPC [44B]
 306 4.2BSD                  1983-09-xx [QCU]
 307                         1983-08-03 [DOC]
 308 4.3BSD                  1986-06-xx [QCU]
 309                         1986-04-05 [KB], [DOC]
 310 4.3BSD Tahoe            1988-06-15 [QCU], [DOC]
 311 4.3BSD NET/1            1988-11-xx [QCU]
 312                         1989-01-01 [DOC]
 313 4.3BSD Reno             1990-06-29 [QCU], [DOC]
 314 4.3BSD NET/2            1991-06-28 [QCU], [DOC]
 315
 316 BSD/386 ALPHA           1991-12-xx [BSDI]
 317                                 first code released to people outside BSDI
 318 386BSD 0.0              1992-02-xx [DOC]
 319 BSD/386 0.3.1           1992-04-xx [BSDI] first ext. beta; B customers
 320 BSD/386 0.3.3           1992-06-xx [BSDI] first CDROM version
 321 386BSD 0.1              1992-07-28 [DOC]
 322 4.4BSD Alpha            1992-07-07
 323 BSD/386 0.9.3           1992-10-xx [BSDI]
 324                                 first external gamma; G customers
 325 BSD/386 0.9.4           1992-12-xx [BSDI]
 326                                 would have been 1.0 except for request
 327                                 for preliminary injunction
 328 BSD/386 1.0             1993-03-xx [BSDI]
 329                                 injunction denied; first official release
 330 NetBSD 0.8              1993-04-20 [NBD]
 331 4.4BSD                  1993-06-01 [USE]
 332 NetBSD 0.9              1993-08-23 [NBD]
 333 FreeBSD 1.0             1993-11-01 [FBD]
 334 BSD/386 1.1             1994-02-xx [BSDI]
 335 4.4BSD Lite             1994-03-01 [USE]
 336 FreeBSD 1.1             1994-05-07 [FBD]
 337 FreeBSD 1.1.5           1994-06-30 [FBD]
 338 FreeBSD 1.1.5.1         1994-07-05 [FBD]
 339                                 supersedes 1.1.5 5 days after release.
 340 NetBSD 1.0              1994-10-26 [NBD]
 341 386BSD 1.0              1994-11-12 [USE]
 342 FreeBSD 2.0             1994-11-23 [FBD]
 343 BSD/OS 2.0              1995-01-xx [BSDI] 4.4 lite based
 344 FreeBSD 2.0.5           1995-06-10 [FBD]
 345 BSD/OS 2.0.1            1995-06-xx [BSDI]
 346 4.4BSD Lite Release 2   1995-06-xx [44B]
 347                                 the true final distribution from the CSRG
 348 FreeBSD 2.1.0           1995-11-19 [FBD]
 349 NetBSD 1.1              1995-11-26 [NBD]
 350 BSD/OS 2.1              1996-01-xx [BSDI]
 351 FreeBSD 2.1.5           1996-07-14 [FBD]
 352 NetBSD 1.2              1996-10-04 [NBD]
 353 OpenBSD 2.0             1996-10-18 [OBD]
 354 FreeBSD 2.1.6           1996-11-16 [FBD]
 355 FreeBSD 2.1.6.1         1996-11-25 [FBD] (sendmail security release)
 356 Rhapsody                1997-xx-xx
 357 FreeBSD 2.1.7           1997-02-20 [FBD]
 358 BSD/OS 3.0              1997-02-xx [BSDI] 4.4 lite2 based
 359 FreeBSD 2.2.0           1997-03-16 [FBD]
 360 FreeBSD 2.2.1           1997-03-25 [FBD]
 361 FreeBSD 2.2.2           1997-05-16 [FBD]
 362 NetBSD 1.2.1            1997-05-20 [NBD] (patch release)
 363 OpenBSD 2.1             1997-06-01 [OBD]
 364 FreeBSD 2.2.5           1997-10-22 [FBD]
 365 OpenBSD 2.2             1997-12-01 [OBD]
 366 NetBSD 1.3              1998-01-04 [NBD]
 367 FreeBSD 2.2.6           1998-03-25 [FBD]
 368 NetBSD 1.3.1            1998-03-09 [NBD] (patch release)
 369 BSD/OS 3.1              1998-03-xx [BSDI]
 370 OpenBSD 2.3             1998-05-19 [OBD]
 371 NetBSD 1.3.2            1998-05-29 [NBD] (patch release)
 372 FreeBSD 2.2.7           1998-07-22 [FBD]
 373 BSD/OS 4.0              1998-08-xx [BSDI]
 374                                 2-lock MP support, ELF executables
 375 FreeBSD 3.0             1998-10-16 [FBD]
 376                                 FreeBSD-3.0 is a snapshot from -current,
 377                                 while 3.1 and 3.2 are from 3.x-stable which
 378                                 was branched quite some time after 3.0-release
 379 FreeBSD 2.2.8           1998-11-29 [FBD]
 380 OpenBSD 2.4             1998-12-01 [OBD]
 381 NetBSD 1.3.3            1998-12-23 [NBD] (patch release)
 382 FreeBSD 3.1             1999-02-15 [FBD]
 383 BSD/OS 4.0.1            1999-03-xx [BSDI]
 384 NetBSD 1.4              1999-05-12 [NBD]
 385 FreeBSD 3.2             1999-05-17 [FBD]
 386 OpenBSD 2.5             1999-05-19 [OBD]
 387 NetBSD 1.4.1            1999-08-26 [NBD] (patch release)
 388 FreeBSD 3.3             1999-09-17 [FBD]
 389 OpenBSD 2.6             1999-12-01 [OBD]
 390 FreeBSD 3.4             1999-12-20 [FBD]
 391 BSD/OS 4.1              1999-12-xx [BSDI]
 392 FreeBSD 4.0             2000-03-13 [FBD]
 393 NetBSD 1.4.2            2000-03-19 [NBD] (patch release)
 394 OpenBSD 2.7             2000-06-15 [OBD]
 395 FreeBSD 3.5             2000-06-24 [FBD]
 396 FreeBSD 4.1             2000-07-27 [FBD]
 397 FreeBSD 3.5.1           2000-07-28 [FBD]
 398 FreeBSD 4.1.1           2000-09-25 [FBD] (a network-only patch release)
 399 FreeBSD 4.2             2000-11-21 [FBD]
 400 NetBSD 1.4.3            2000-11-25 [NBD] (patch release)
 401 BSD/OS 4.2              2000-11-29 [BSDI]
 402 OpenBSD 2.8             2000-12-01 [OBD]
 403 NetBSD 1.5              2000-12-06 [NBD]
 404 Mac OS X 10.0           2001-03-24 [APL]
 405 FreeBSD 4.3             2001-04-20 [FBD]
 406 OpenBSD 2.9             2001-06-01 [OBD]
 407 NetBSD 1.5.1            2001-07-11 [NBD] (patch release)
 408 NetBSD 1.5.2            2001-09-13 [NBD] (patch release)
 409 FreeBSD 4.4             2001-09-18 [FBD]
 410 Mac OS X 10.1           2001-09-29 [APL]
 411 OpenBSD 3.0             2001-12-01 [OBD]
 412 FreeBSD 4.5             2002-01-29 [FBD]
 413 BSD/OS 4.3              2002-03-14 [WRS]
 414 OpenBSD 3.1             2002-05-19 [OBD]
 415 FreeBSD 4.6             2002-06-15 [FBD]
 416 NetBSD 1.5.3            2002-07-22 [NBD] (patch release)
 417 FreeBSD 4.6.2           2002-08-15 [FBD] (patch release)
 418 Mac OS X 10.2           2002-08-23 [APL]
 419 NetBSD 1.6              2002-09-14 [NBD]
 420 FreeBSD 4.7             2002-10-08 [FBD]
 421 OpenBSD 3.2             2002-11-01 [OBD]
 422 FreeBSD 5.0             2003-01-17 [FBD]
 423                                 FreeBSD 5.0 is a separate branch off of
 424                                 -current, similar to 3.0.
 425 FreeBSD 4.8             2003-04-03 [FBD]
 426 NetBSD 1.6.1            2003-04-21 [NBD] (patch release)
 427 OpenBSD 3.3             2003-05-01 [OBD]
 428 BSD/OS 5.0              2003-05-?? [WRS]
 429 FreeBSD 5.1             2003-06-09 [FBD]
 430 Mac OS X 10.3           2003-10-24 [APL]
 431 FreeBSD 4.9             2003-10-28 [FBD]
 432 BSD/OS 5.1 ISE          2003-10-?? [WRS] (final version)
 433 OpenBSD 3.4             2003-11-01 [OBD]
 434 FreeBSD 5.2             2004-01-12 [FBD]
 435 FreeBSD 5.2.1           2004-02-22 [FBD] (patch release)
 436 NetBSD 1.6.2            2004-03-01 [NBD] (patch release)
 437 OpenBSD 3.5             2004-04-01 [OBD]
 438 FreeBSD 4.10            2004-05-27 [FBD]
 439 DragonFly 1.0           2004-07-12 [DFB]
 440 OpenBSD 3.6             2004-10-29 [OBD]
 441 FreeBSD 5.3             2004-11-06 [FBD]
 442 NetBSD 2.0              2004-12-09 [NBD]
 443 FreeBSD 4.11            2005-01-25 [FBD]
 444 DragonFly 1.2.0         2005-04-08 [DFB]
 445 NetBSD 2.0.2            2005-04-14 [NBD] (security/critical release)
 446 Mac OS X 10.4           2005-04-29 [APL]
 447 FreeBSD 5.4             2005-05-09 [FBD]
 448 OpenBSD 3.7             2005-05-19 [OBD]
 449 NetBSD 2.0.3            2005-10-31 [NBD] (security/critical release)
 450 OpenBSD 3.8             2005-11-01 [OBD]
 451 FreeBSD 6.0             2005-11-01 [FBD]
 452 NetBSD 2.1              2005-11-02 [NBD]
 453 NetBSD 3.0              2005-12-23 [NBD]
 454 DragonFly 1.4.0         2006-01-08 [DFB]
 455 OpenBSD 3.9             2006-05-01 [OBD]
 456 FreeBSD 6.1             2006-05-08 [FBD]
 457 FreeBSD 5.5             2006-05-25 [FBD]
 458 NetBSD 3.0.1            2006-07-24 [NBD] (security/critical release)
 459 DragonFly 1.6.0         2006-07-24 [DFB]
 460 OpenBSD 4.0             2006-11-01 [OBD]
 461 NetBSD 3.0.2            2006-11-04 [NBD] (security/critical release)
 462 NetBSD 3.1              2006-11-04 [NBD]
 463 FreeBSD 6.2             2007-01-15 [FBD]
 464 DragonFly 1.8.0         2007-01-30 [DFB]
 465
 466 Bibliography
 467 ------------------------
 468
 469 Leffler, Samuel J., Marshall Kirk McKusick, Michael J Karels and John
 470 Quarterman. The Design and Implementation of the 4.3BSD UNIX Operating
 471 System. Reading, Mass. Addison-Wesley, 1989. ISBN 0-201-06196-1
 472
 473 Salus, Peter H. A quarter century of UNIX. Addison-Wesley Publishing
 474 Company, Inc., 1994. ISBN 0-201-54777-5
 475
 476 McKusick, Marshall Kirk, Keith Bostic, Michael J Karels, and John
 477 Quarterman. The Design and Implementation of the 4.4BSD Operating
 478 System. Reading, Mass. Addison-Wesley, 1996. ISBN 0-201-54979-4
 479
 480 McKusick, Marshall Kirk, George Neville-Neil. The Design and
 481 Implementation of the FreeBSD Operating System.
 482 Addison-Wesley Professional, Published: Aug 2, 2004. ISBN 0-201-70245-2
 483
 484 Doug McIlroy. Research Unix Reader.
 485
 486 Michael G. Brown. The Role of BSD in the Development of Unix.
 487 Presented to the Tasmanian Unix Special Interest Group of the
 488 Australian Computer Society, Hobart, August 1993.
 489
 490 Peter H. Salus. Unix at 25. Byte Magazine, October 1994.
 491 URL: http://www.byte.com/art/9410/sec8/art3.htm
 492
 493 Andreas Klemm, Lars Köller. If you're going to San Francisco ...
 494 Die freien BSD-Varianten von Unix. c't April 1997, page 368ff.
 495
 496 BSD Release Announcements collection.
 497 URL: http://www.de.FreeBSD.org/de/ftp/releases/
 498
 499 BSD Hypertext Man Pages
 500 URL: http://www.FreeBSD.org/cgi/man.cgi
 501
 502 UNIX history graphing project
 503 URL: http://minnie.tuhs.org/Unix_History/index.html
 504
 505 UNIX history
 506 URL: http://www.levenez.com/unix/
 507
 508 James Howard: The BSD Family Tree
 509 URL: http://ezine.daemonnews.org/200104/bsd_family.html
 510 ("what are the differences between FreeBSD, NetBSD, and OpenBSD?")
 511
 512
 513 Acknowledgments
 514 ---------------
 515
 516 Josh Gilliam for suggestions, bug fixes, and finding very old
 517 original BSD announcements from Usenet or tapes.
 518
 519 Steven M. Schultz for providing 2.8BSD, 2.10BSD, 2.11BSD manual pages.
 520
 521 --
 522 Copyright (c) 1997-2007 Wolfram Schneider <wosch@FreeBSD.ORG>
 523 URL: http://cvsweb.freebsd.org/src/share/misc/bsd-family-tree
 524
 525 $FreeBSD: src/share/misc/bsd-family-tree,v 1.111 2007/01/31 04:58:03 maxim Exp $
 526 $DragonFly: src/share/misc/bsd-family-tree,v 1.11 2007/01/31 08:28:23 swildner Exp $