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  |     |              |      |             OpenBSD 4.1                 |
 214  |     |              |      |                 |                DragonFly 1.10.0
 215  |     |              |      |             OpenBSD 4.2                 |
 216  |     V              |      |                 |                       |
 217 FreeBSD 7 -current    |  NetBSD -current  OpenBSD -current             |
 218  |                    |      |                 |                       |
 219  v                    v      v                 v                       v
 220
 221 Time
 222 ----------------
 223
 224 Time tolerance +/- 6 months, depending on which book/article you read; if it
 225 was the announcement in Usenet or if it was available as tape.
 226
 227 [44B] McKusick, Marshall Kirk, Keith Bostic, Michael J Karels,
 228         and John Quarterman. The Design and Implementation of
 229         the 4.4BSD Operating System.
 230 [APL] Apple website [http://www.apple.com/macosx/]
 231 [BSDI] Berkeley Software Design, Inc.
 232 [DFB] DragonFlyBSD Project, The.
 233 [DOC] README, COPYRIGHT on tape.
 234 [FBD] FreeBSD Project, The.
 235 [KB]  Keith Bostic. BSD2.10 available from Usenix. comp.unix.sources,
 236         Volume 11, Info 4, April, 1987.
 237 [KKK] Mike Karels, Kirk McKusick, and Keith Bostic. tahoe announcement.
 238         comp.bugs.4bsd.ucb-fixes, June 15, 1988.
 239 [KSJ] Michael J. Karels, Carl F. Smith, and William F. Jolitz.
 240         Changes in the Kernel in 2.9BSD. Second Berkeley Software
 241         Distribution UNIX Version 2.9, July, 1983.
 242 [NBD] NetBSD Project, The.
 243 [OBD] OpenBSD Project, The.
 244 [QCU] Salus, Peter H. A quarter century of UNIX.
 245 [SMS] Steven M. Schultz. 2.11BSD, UNIX for the PDP-11.
 246 [USE] Usenet announcement.
 247 [WRS] Wind River Systems, Inc.
 248 [dmr] Dennis Ritchie, via E-Mail
 249
 250 Multics                 1965
 251 UNIX                    Summer 1969
 252                                 DEC PDP-7
 253 First   Edition         1971-11-03 [QCU]
 254                                 DEC PDP-11/20, Assembler
 255 Second  Edition         1972-06-12 [QCU]
 256                                 10 UNIX installations
 257 Third   Edition         1973-02-xx [QCU]
 258                                 Pipes, 16 installations
 259 Fourth  Edition         1973-11-xx [QCU]
 260                                 rewriting in C effected,
 261                                 above 30 installations
 262 Fifth   Edition         1974-06-xx [QCU]
 263                                 above 50 installations
 264 Sixth   Edition         1975-05-xx [QCU]
 265                                 port to DEC Vax
 266 Seventh Edition         1979-01-xx [QCU]
 267                                 first portable UNIX
 268 Eighth  Edition         1985-02-xx [QCU]
 269                                 VAX 11/750, VAX 11/780 [dmr]
 270                                 descended from 4.1c BSD [dmr]
 271                                 descended from 4.1 BSD [44B]
 272                         scooping-out and replacement of the character-device
 273                         and networking part by the streams mechanism
 274
 275 Ninth   Edition         1986-09-xx [QCU]
 276 Tenth   Edition         1989-10-xx [QCU]
 277
 278 1BSD                    late 1977
 279                         1978-03-09 [QCU]
 280                                 PDP-11, Pascal, ex(1)
 281                                 30 free copies of 1BSD sent out
 282                                 35 tapes sold for 50 USD [QCU]
 283 2BSD                    mid 1978 [QCU]
 284                                 75 2BSD tapes shipped
 285 2.7.9BSD                ?? [SMS]
 286 2.8BSD                  1981-07-xx [KSJ]
 287
 288 2.8.1BSD                1982-01-xx [QCU]
 289                                 set of performance improvements
 290 2.9BSD                  1983-07-xx [KSJ]
 291 2.9.1BSD                1983-11-xx
 292 2.9BSD-Seismo           1985-08-xx [SMS]
 293 2.10BSD                 1987-04-xx [KKK]
 294 2.10.1BSD               1989-01-xx [SMS]
 295 2.11BSD                 1992-02-xx [SMS]
 296 2.11BSD rev #430        1999-12-13 [SMS]
 297
 298 32V                     1978-1[01]-xx [QCU]
 299 3BSD                    late 1979 [QCU]
 300                                 virtual memory, page replacement,
 301                                 demand paging
 302 4.0BSD                  1980-10-xx
 303 4.1BSD                  1981-07-08 [DOC]
 304 4.1aBSD                 1982-04-xx
 305                                 alpha release, 100 sites, networking [44B]
 306 4.1bBSD                         internal release, fast filesystem [44B]
 307 4.1cBSD                 late 1982
 308                                 beta release, IPC [44B]
 309 4.2BSD                  1983-09-xx [QCU]
 310                         1983-08-03 [DOC]
 311 4.3BSD                  1986-06-xx [QCU]
 312                         1986-04-05 [KB], [DOC]
 313 4.3BSD Tahoe            1988-06-15 [QCU], [DOC]
 314 4.3BSD NET/1            1988-11-xx [QCU]
 315                         1989-01-01 [DOC]
 316 4.3BSD Reno             1990-06-29 [QCU], [DOC]
 317 4.3BSD NET/2            1991-06-28 [QCU], [DOC]
 318
 319 BSD/386 ALPHA           1991-12-xx [BSDI]
 320                                 first code released to people outside BSDI
 321 386BSD 0.0              1992-02-xx [DOC]
 322 BSD/386 0.3.1           1992-04-xx [BSDI] first ext. beta; B customers
 323 BSD/386 0.3.3           1992-06-xx [BSDI] first CDROM version
 324 386BSD 0.1              1992-07-28 [DOC]
 325 4.4BSD Alpha            1992-07-07
 326 BSD/386 0.9.3           1992-10-xx [BSDI]
 327                                 first external gamma; G customers
 328 BSD/386 0.9.4           1992-12-xx [BSDI]
 329                                 would have been 1.0 except for request
 330                                 for preliminary injunction
 331 BSD/386 1.0             1993-03-xx [BSDI]
 332                                 injunction denied; first official release
 333 NetBSD 0.8              1993-04-20 [NBD]
 334 4.4BSD                  1993-06-01 [USE]
 335 NetBSD 0.9              1993-08-23 [NBD]
 336 FreeBSD 1.0             1993-11-01 [FBD]
 337 FreeBSD 1.0.2           1993-11-14 [FBD]
 338                                 supersedes 1.0 13 days after release.
 339 BSD/386 1.1             1994-02-xx [BSDI]
 340 4.4BSD Lite             1994-03-01 [USE]
 341 FreeBSD 1.1             1994-05-07 [FBD]
 342 FreeBSD 1.1.5           1994-06-30 [FBD]
 343 FreeBSD 1.1.5.1         1994-07-05 [FBD]
 344                                 supersedes 1.1.5 5 days after release.
 345 NetBSD 1.0              1994-10-26 [NBD]
 346 386BSD 1.0              1994-11-12 [USE]
 347 FreeBSD 2.0             1994-11-23 [FBD]
 348 BSD/OS 2.0              1995-01-xx [BSDI] 4.4 lite based
 349 FreeBSD 2.0.5           1995-06-10 [FBD]
 350 BSD/OS 2.0.1            1995-06-xx [BSDI]
 351 4.4BSD Lite Release 2   1995-06-xx [44B]
 352                                 the true final distribution from the CSRG
 353 FreeBSD 2.1.0           1995-11-19 [FBD]
 354 NetBSD 1.1              1995-11-26 [NBD]
 355 BSD/OS 2.1              1996-01-xx [BSDI]
 356 FreeBSD 2.1.5           1996-07-14 [FBD]
 357 NetBSD 1.2              1996-10-04 [NBD]
 358 OpenBSD 2.0             1996-10-18 [OBD]
 359 FreeBSD 2.1.6           1996-11-16 [FBD]
 360 FreeBSD 2.1.6.1         1996-11-25 [FBD] (sendmail security release)
 361 Rhapsody                1997-xx-xx
 362 FreeBSD 2.1.7           1997-02-20 [FBD]
 363 BSD/OS 3.0              1997-02-xx [BSDI] 4.4 lite2 based
 364 FreeBSD 2.2.0           1997-03-16 [FBD]
 365 FreeBSD 2.2.1           1997-03-25 [FBD]
 366 FreeBSD 2.2.2           1997-05-16 [FBD]
 367 NetBSD 1.2.1            1997-05-20 [NBD] (patch release)
 368 OpenBSD 2.1             1997-06-01 [OBD]
 369 FreeBSD 2.2.5           1997-10-22 [FBD]
 370 OpenBSD 2.2             1997-12-01 [OBD]
 371 NetBSD 1.3              1998-01-04 [NBD]
 372 FreeBSD 2.2.6           1998-03-25 [FBD]
 373 NetBSD 1.3.1            1998-03-09 [NBD] (patch release)
 374 BSD/OS 3.1              1998-03-xx [BSDI]
 375 OpenBSD 2.3             1998-05-19 [OBD]
 376 NetBSD 1.3.2            1998-05-29 [NBD] (patch release)
 377 FreeBSD 2.2.7           1998-07-22 [FBD]
 378 BSD/OS 4.0              1998-08-xx [BSDI]
 379                                 2-lock MP support, ELF executables
 380 FreeBSD 3.0             1998-10-16 [FBD]
 381                                 FreeBSD-3.0 is a snapshot from -current,
 382                                 while 3.1 and 3.2 are from 3.x-stable which
 383                                 was branched quite some time after 3.0-release
 384 FreeBSD 2.2.8           1998-11-29 [FBD]
 385 OpenBSD 2.4             1998-12-01 [OBD]
 386 NetBSD 1.3.3            1998-12-23 [NBD] (patch release)
 387 FreeBSD 3.1             1999-02-15 [FBD]
 388 BSD/OS 4.0.1            1999-03-xx [BSDI]
 389 NetBSD 1.4              1999-05-12 [NBD]
 390 FreeBSD 3.2             1999-05-17 [FBD]
 391 OpenBSD 2.5             1999-05-19 [OBD]
 392 NetBSD 1.4.1            1999-08-26 [NBD] (patch release)
 393 FreeBSD 3.3             1999-09-17 [FBD]
 394 OpenBSD 2.6             1999-12-01 [OBD]
 395 FreeBSD 3.4             1999-12-20 [FBD]
 396 BSD/OS 4.1              1999-12-xx [BSDI]
 397 FreeBSD 4.0             2000-03-13 [FBD]
 398 NetBSD 1.4.2            2000-03-19 [NBD] (patch release)
 399 OpenBSD 2.7             2000-06-15 [OBD]
 400 FreeBSD 3.5             2000-06-24 [FBD]
 401 FreeBSD 4.1             2000-07-27 [FBD]
 402 FreeBSD 3.5.1           2000-07-28 [FBD]
 403 FreeBSD 4.1.1           2000-09-25 [FBD] (a network-only patch release)
 404 FreeBSD 4.2             2000-11-21 [FBD]
 405 NetBSD 1.4.3            2000-11-25 [NBD] (patch release)
 406 BSD/OS 4.2              2000-11-29 [BSDI]
 407 OpenBSD 2.8             2000-12-01 [OBD]
 408 NetBSD 1.5              2000-12-06 [NBD]
 409 Mac OS X 10.0           2001-03-24 [APL]
 410 FreeBSD 4.3             2001-04-20 [FBD]
 411 OpenBSD 2.9             2001-06-01 [OBD]
 412 NetBSD 1.5.1            2001-07-11 [NBD] (patch release)
 413 NetBSD 1.5.2            2001-09-13 [NBD] (patch release)
 414 FreeBSD 4.4             2001-09-18 [FBD]
 415 Mac OS X 10.1           2001-09-29 [APL]
 416 OpenBSD 3.0             2001-12-01 [OBD]
 417 FreeBSD 4.5             2002-01-29 [FBD]
 418 BSD/OS 4.3              2002-03-14 [WRS]
 419 OpenBSD 3.1             2002-05-19 [OBD]
 420 FreeBSD 4.6             2002-06-15 [FBD]
 421 NetBSD 1.5.3            2002-07-22 [NBD] (patch release)
 422 FreeBSD 4.6.2           2002-08-15 [FBD] (patch release)
 423 Mac OS X 10.2           2002-08-23 [APL]
 424 NetBSD 1.6              2002-09-14 [NBD]
 425 FreeBSD 4.7             2002-10-08 [FBD]
 426 OpenBSD 3.2             2002-11-01 [OBD]
 427 FreeBSD 5.0             2003-01-17 [FBD]
 428                                 FreeBSD 5.0 is a separate branch off of
 429                                 -current, similar to 3.0.
 430 FreeBSD 4.8             2003-04-03 [FBD]
 431 NetBSD 1.6.1            2003-04-21 [NBD] (patch release)
 432 OpenBSD 3.3             2003-05-01 [OBD]
 433 BSD/OS 5.0              2003-05-?? [WRS]
 434 FreeBSD 5.1             2003-06-09 [FBD]
 435 Mac OS X 10.3           2003-10-24 [APL]
 436 FreeBSD 4.9             2003-10-28 [FBD]
 437 BSD/OS 5.1 ISE          2003-10-?? [WRS] (final version)
 438 OpenBSD 3.4             2003-11-01 [OBD]
 439 FreeBSD 5.2             2004-01-12 [FBD]
 440 FreeBSD 5.2.1           2004-02-22 [FBD] (patch release)
 441 NetBSD 1.6.2            2004-03-01 [NBD] (patch release)
 442 OpenBSD 3.5             2004-04-01 [OBD]
 443 FreeBSD 4.10            2004-05-27 [FBD]
 444 DragonFly 1.0           2004-07-12 [DFB]
 445 OpenBSD 3.6             2004-10-29 [OBD]
 446 FreeBSD 5.3             2004-11-06 [FBD]
 447 NetBSD 2.0              2004-12-09 [NBD]
 448 FreeBSD 4.11            2005-01-25 [FBD]
 449 DragonFly 1.2.0         2005-04-08 [DFB]
 450 NetBSD 2.0.2            2005-04-14 [NBD] (security/critical release)
 451 Mac OS X 10.4           2005-04-29 [APL]
 452 FreeBSD 5.4             2005-05-09 [FBD]
 453 OpenBSD 3.7             2005-05-19 [OBD]
 454 NetBSD 2.0.3            2005-10-31 [NBD] (security/critical release)
 455 OpenBSD 3.8             2005-11-01 [OBD]
 456 FreeBSD 6.0             2005-11-01 [FBD]
 457 NetBSD 2.1              2005-11-02 [NBD]
 458 NetBSD 3.0              2005-12-23 [NBD]
 459 DragonFly 1.4.0         2006-01-08 [DFB]
 460 OpenBSD 3.9             2006-05-01 [OBD]
 461 FreeBSD 6.1             2006-05-08 [FBD]
 462 FreeBSD 5.5             2006-05-25 [FBD]
 463 NetBSD 3.0.1            2006-07-24 [NBD] (security/critical release)
 464 DragonFly 1.6.0         2006-07-24 [DFB]
 465 OpenBSD 4.0             2006-11-01 [OBD]
 466 NetBSD 3.0.2            2006-11-04 [NBD] (security/critical release)
 467 NetBSD 3.1              2006-11-04 [NBD]
 468 FreeBSD 6.2             2007-01-15 [FBD]
 469 DragonFly 1.8.0         2007-01-30 [DFB]
 470 OpenBSD 4.1             2007-05-01 [OBD]
 471 DragonFly 1.10.0        2007-08-06 [DFB]
 472 OpenBSD 4.2             2007-11-01 [OBD]
 473
 474 Bibliography
 475 ------------------------
 476
 477 Leffler, Samuel J., Marshall Kirk McKusick, Michael J Karels and John
 478 Quarterman. The Design and Implementation of the 4.3BSD UNIX Operating
 479 System. Reading, Mass. Addison-Wesley, 1989. ISBN 0-201-06196-1
 480
 481 Salus, Peter H. A quarter century of UNIX. Addison-Wesley Publishing
 482 Company, Inc., 1994. ISBN 0-201-54777-5
 483
 484 McKusick, Marshall Kirk, Keith Bostic, Michael J Karels, and John
 485 Quarterman. The Design and Implementation of the 4.4BSD Operating
 486 System. Reading, Mass. Addison-Wesley, 1996. ISBN 0-201-54979-4
 487
 488 McKusick, Marshall Kirk, George Neville-Neil. The Design and
 489 Implementation of the FreeBSD Operating System.
 490 Addison-Wesley Professional, Published: Aug 2, 2004. ISBN 0-201-70245-2
 491
 492 Doug McIlroy. Research Unix Reader.
 493
 494 Michael G. Brown. The Role of BSD in the Development of Unix.
 495 Presented to the Tasmanian Unix Special Interest Group of the
 496 Australian Computer Society, Hobart, August 1993.
 497
 498 Peter H. Salus. Unix at 25. Byte Magazine, October 1994.
 499 URL: http://www.byte.com/art/9410/sec8/art3.htm
 500
 501 Andreas Klemm, Lars Köller. If you're going to San Francisco ...
 502 Die freien BSD-Varianten von Unix. c't April 1997, page 368ff.
 503
 504 BSD Release Announcements collection.
 505 URL: http://www.de.FreeBSD.org/de/ftp/releases/
 506
 507 BSD Hypertext Man Pages
 508 URL: http://www.FreeBSD.org/cgi/man.cgi
 509
 510 UNIX history graphing project
 511 URL: http://minnie.tuhs.org/Unix_History/index.html
 512
 513 UNIX history
 514 URL: http://www.levenez.com/unix/
 515
 516 James Howard: The BSD Family Tree
 517 URL: http://ezine.daemonnews.org/200104/bsd_family.html
 518 ("what are the differences between FreeBSD, NetBSD, and OpenBSD?")
 519
 520
 521 Acknowledgments
 522 ---------------
 523
 524 Josh Gilliam for suggestions, bug fixes, and finding very old
 525 original BSD announcements from Usenet or tapes.
 526
 527 Steven M. Schultz for providing 2.8BSD, 2.10BSD, 2.11BSD manual pages.
 528
 529 --
 530 Copyright (c) 1997-2007 Wolfram Schneider <wosch@FreeBSD.ORG>
 531 URL: http://cvsweb.freebsd.org/src/share/misc/bsd-family-tree
 532
 533 $FreeBSD: src/share/misc/bsd-family-tree,v 1.116 2007/11/02 19:25:06 maxim Exp $
 534 $DragonFly: src/share/misc/bsd-family-tree,v 1.13 2007/11/05 11:17:15 hasso Exp $