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  |     V              |      |   NetBSD 3.0.1  |                 DragonFly 1.6.0
 207  |                    |      |                 |                       |
 208 FreeBSD 7 -current    |  NetBSD -current  OpenBSD -current             |
 209  |                    |      |                 |                       |
 210  v                    v      v                 v                       v
 211
 212 Time
 213 ----------------
 214
 215 Time tolerance +/- 6 months, depending on which book/article you read; if it
 216 was the announcement in Usenet or if it was available as tape.
 217
 218 [44B] McKusick, Marshall Kirk, Keith Bostic, Michael J Karels,
 219         and John Quarterman. The Design and Implementation of
 220         the 4.4BSD Operating System.
 221 [APL] Apple website [http://www.apple.com/macosx/]
 222 [BSDI] Berkeley Software Design, Inc.
 223 [DFB] DragonFlyBSD Project, The.
 224 [DOC] README, COPYRIGHT on tape.
 225 [FBD] FreeBSD Project, The.
 226 [KB]  Keith Bostic. BSD2.10 available from Usenix. comp.unix.sources,
 227         Volume 11, Info 4, April, 1987.
 228 [KKK] Mike Karels, Kirk McKusick, and Keith Bostic. tahoe announcement.
 229         comp.bugs.4bsd.ucb-fixes, June 15, 1988.
 230 [KSJ] Michael J. Karels, Carl F. Smith, and William F. Jolitz.
 231         Changes in the Kernel in 2.9BSD. Second Berkeley Software
 232         Distribution UNIX Version 2.9, July, 1983.
 233 [NBD] NetBSD Project, The.
 234 [OBD] OpenBSD Project, The.
 235 [QCU] Salus, Peter H. A quarter century of UNIX.
 236 [SMS] Steven M. Schultz. 2.11BSD, UNIX for the PDP-11.
 237 [USE] Usenet announcement.
 238 [WRS] Wind River Systems, Inc.
 239 [dmr] Dennis Ritchie, via E-Mail
 240
 241 Multics                 1965
 242 UNIX                    Summer 1969
 243                                 DEC PDP-7
 244 First   Edition         1971-11-03 [QCU]
 245                                 DEC PDP-11/20, Assembler
 246 Second  Edition         1972-06-12 [QCU]
 247                                 10 UNIX installations
 248 Third   Edition         1973-02-xx [QCU]
 249                                 Pipes, 16 installations
 250 Fourth  Edition         1973-11-xx [QCU]
 251                                 rewriting in C effected,
 252                                 above 30 installations
 253 Fifth   Edition         1974-06-xx [QCU]
 254                                 above 50 installations
 255 Sixth   Edition         1975-05-xx [QCU]
 256                                 port to DEC Vax
 257 Seventh Edition         1979-01-xx [QCU]
 258                                 first portable UNIX
 259 Eighth  Edition         1985-02-xx [QCU]
 260                                 VAX 11/750, VAX 11/780 [dmr]
 261                                 descended from 4.1c BSD [dmr]
 262                                 descended from 4.1 BSD [44B]
 263                         scooping-out and replacement of the character-device
 264                         and networking part by the streams mechanism
 265
 266 Ninth   Edition         1986-09-xx [QCU]
 267 Tenth   Edition         1989-10-xx [QCU]
 268
 269 1BSD                    late 1977
 270                         1978-03-09 [QCU]
 271                                 PDP-11, Pascal, ex(1)
 272                                 30 free copies of 1BSD sent out
 273                                 35 tapes sold for 50 USD [QCU]
 274 2BSD                    mid 1978 [QCU]
 275                                 75 2BSD tapes shipped
 276 2.7.9BSD                ?? [SMS]
 277 2.8BSD                  1981-07-xx [KSJ]
 278
 279 2.8.1BSD                1982-01-xx [QCU]
 280                                 set of performance improvements
 281 2.9BSD                  1983-07-xx [KSJ]
 282 2.9.1BSD                1983-11-xx
 283 2.9BSD-Seismo           1985-08-xx [SMS]
 284 2.10BSD                 1987-04-xx [KKK]
 285 2.10.1BSD               1989-01-xx [SMS]
 286 2.11BSD                 1992-02-xx [SMS]
 287 2.11BSD rev #430        1999-12-13 [SMS]
 288
 289 32V                     1978-1[01]-xx [QCU]
 290 3BSD                    late 1979 [QCU]
 291                                 virtual memory, page replacement,
 292                                 demand paging
 293 4.0BSD                  1980-10-xx
 294 4.1BSD                  1981-07-08 [DOC]
 295 4.1aBSD                 1982-04-xx
 296                                 alpha release, 100 sites, networking [44B]
 297 4.1bBSD                         internal release, fast filesystem [44B]
 298 4.1cBSD                 late 1982
 299                                 beta release, IPC [44B]
 300 4.2BSD                  1983-09-xx [QCU]
 301                         1983-08-03 [DOC]
 302 4.3BSD                  1986-06-xx [QCU]
 303                         1986-04-05 [KB], [DOC]
 304 4.3BSD Tahoe            1988-06-15 [QCU], [DOC]
 305 4.3BSD NET/1            1988-11-xx [QCU]
 306                         1989-01-01 [DOC]
 307 4.3BSD Reno             1990-06-29 [QCU], [DOC]
 308 4.3BSD NET/2            1991-06-28 [QCU], [DOC]
 309
 310 BSD/386 ALPHA           1991-12-xx [BSDI]
 311                                 first code released to people outside BSDI
 312 386BSD 0.0              1992-02-xx [DOC]
 313 BSD/386 0.3.1           1992-04-xx [BSDI] first ext. beta; B customers
 314 BSD/386 0.3.3           1992-06-xx [BSDI] first CDROM version
 315 386BSD 0.1              1992-07-28 [DOC]
 316 4.4BSD Alpha            1992-07-07
 317 BSD/386 0.9.3           1992-10-xx [BSDI]
 318                                 first external gamma; G customers
 319 BSD/386 0.9.4           1992-12-xx [BSDI]
 320                                 would have been 1.0 except for request
 321                                 for preliminary injunction
 322 BSD/386 1.0             1993-03-xx [BSDI]
 323                                 injunction denied; first official release
 324 NetBSD 0.8              1993-04-20 [NBD]
 325 4.4BSD                  1993-06-01 [USE]
 326 NetBSD 0.9              1993-08-23 [NBD]
 327 FreeBSD 1.0             1993-11-01 [FBD]
 328 BSD/386 1.1             1994-02-xx [BSDI]
 329 4.4BSD Lite             1994-03-01 [USE]
 330 FreeBSD 1.1             1994-05-07 [FBD]
 331 FreeBSD 1.1.5           1994-06-30 [FBD]
 332 FreeBSD 1.1.5.1         1994-07-05 [FBD]
 333                                 supersedes 1.1.5 5 days after release.
 334 NetBSD 1.0              1994-10-26 [NBD]
 335 386BSD 1.0              1994-11-12 [USE]
 336 FreeBSD 2.0             1994-11-23 [FBD]
 337 BSD/OS 2.0              1995-01-xx [BSDI] 4.4 lite based
 338 FreeBSD 2.0.5           1995-06-10 [FBD]
 339 BSD/OS 2.0.1            1995-06-xx [BSDI]
 340 4.4BSD Lite Release 2   1995-06-xx [44B]
 341                                 the true final distribution from the CSRG
 342 FreeBSD 2.1.0           1995-11-19 [FBD]
 343 NetBSD 1.1              1995-11-26 [NBD]
 344 BSD/OS 2.1              1996-01-xx [BSDI]
 345 FreeBSD 2.1.5           1996-07-14 [FBD]
 346 NetBSD 1.2              1996-10-04 [NBD]
 347 OpenBSD 2.0             1996-10-18 [OBD]
 348 FreeBSD 2.1.6           1996-11-16 [FBD]
 349 FreeBSD 2.1.6.1         1996-11-25 [FBD] (sendmail security release)
 350 Rhapsody                1997-xx-xx
 351 FreeBSD 2.1.7           1997-02-20 [FBD]
 352 BSD/OS 3.0              1997-02-xx [BSDI] 4.4 lite2 based
 353 FreeBSD 2.2.0           1997-03-16 [FBD]
 354 FreeBSD 2.2.1           1997-03-25 [FBD]
 355 FreeBSD 2.2.2           1997-05-16 [FBD]
 356 NetBSD 1.2.1            1997-05-20 [NBD] (patch release)
 357 OpenBSD 2.1             1997-06-01 [OBD]
 358 FreeBSD 2.2.5           1997-10-22 [FBD]
 359 OpenBSD 2.2             1997-12-01 [OBD]
 360 NetBSD 1.3              1998-01-04 [NBD]
 361 FreeBSD 2.2.6           1998-03-25 [FBD]
 362 NetBSD 1.3.1            1998-03-09 [NBD] (patch release)
 363 BSD/OS 3.1              1998-03-xx [BSDI]
 364 OpenBSD 2.3             1998-05-19 [OBD]
 365 NetBSD 1.3.2            1998-05-29 [NBD] (patch release)
 366 FreeBSD 2.2.7           1998-07-22 [FBD]
 367 BSD/OS 4.0              1998-08-xx [BSDI]
 368                                 2-lock MP support, ELF executables
 369 FreeBSD 3.0             1998-10-16 [FBD]
 370                                 FreeBSD-3.0 is a snapshot from -current,
 371                                 while 3.1 and 3.2 are from 3.x-stable which
 372                                 was branched quite some time after 3.0-release
 373 FreeBSD 2.2.8           1998-11-29 [FBD]
 374 OpenBSD 2.4             1998-12-01 [OBD]
 375 NetBSD 1.3.3            1998-12-23 [NBD] (patch release)
 376 FreeBSD 3.1             1999-02-15 [FBD]
 377 BSD/OS 4.0.1            1999-03-xx [BSDI]
 378 NetBSD 1.4              1999-05-12 [NBD]
 379 FreeBSD 3.2             1999-05-17 [FBD]
 380 OpenBSD 2.5             1999-05-19 [OBD]
 381 NetBSD 1.4.1            1999-08-26 [NBD] (patch release)
 382 FreeBSD 3.3             1999-09-17 [FBD]
 383 OpenBSD 2.6             1999-12-01 [OBD]
 384 FreeBSD 3.4             1999-12-20 [FBD]
 385 BSD/OS 4.1              1999-12-xx [BSDI]
 386 FreeBSD 4.0             2000-03-13 [FBD]
 387 NetBSD 1.4.2            2000-03-19 [NBD] (patch release)
 388 OpenBSD 2.7             2000-06-15 [OBD]
 389 FreeBSD 3.5             2000-06-24 [FBD]
 390 FreeBSD 4.1             2000-07-27 [FBD]
 391 FreeBSD 3.5.1           2000-07-28 [FBD]
 392 FreeBSD 4.1.1           2000-09-25 [FBD] (a network-only patch release)
 393 FreeBSD 4.2             2000-11-21 [FBD]
 394 NetBSD 1.4.3            2000-11-25 [NBD] (patch release)
 395 BSD/OS 4.2              2000-11-29 [BSDI]
 396 OpenBSD 2.8             2000-12-01 [OBD]
 397 NetBSD 1.5              2000-12-06 [NBD]
 398 Mac OS X 10.0           2001-03-24 [APL]
 399 FreeBSD 4.3             2001-04-20 [FBD]
 400 OpenBSD 2.9             2001-06-01 [OBD]
 401 NetBSD 1.5.1            2001-07-11 [NBD] (patch release)
 402 NetBSD 1.5.2            2001-09-13 [NBD] (patch release)
 403 FreeBSD 4.4             2001-09-18 [FBD]
 404 Mac OS X 10.1           2001-09-29 [APL]
 405 OpenBSD 3.0             2001-12-01 [OBD]
 406 FreeBSD 4.5             2002-01-29 [FBD]
 407 BSD/OS 4.3              2002-03-14 [WRS]
 408 OpenBSD 3.1             2002-05-19 [OBD]
 409 FreeBSD 4.6             2002-06-15 [FBD]
 410 NetBSD 1.5.3            2002-07-22 [NBD] (patch release)
 411 FreeBSD 4.6.2           2002-08-15 [FBD] (patch release)
 412 Mac OS X 10.2           2002-08-23 [APL]
 413 NetBSD 1.6              2002-09-14 [NBD]
 414 FreeBSD 4.7             2002-10-08 [FBD]
 415 OpenBSD 3.2             2002-11-01 [OBD]
 416 FreeBSD 5.0             2003-01-17 [FBD]
 417                                 FreeBSD 5.0 is a separate branch off of
 418                                 -current, similar to 3.0.
 419 FreeBSD 4.8             2003-04-03 [FBD]
 420 NetBSD 1.6.1            2003-04-21 [NBD] (patch release)
 421 OpenBSD 3.3             2003-05-01 [OBD]
 422 BSD/OS 5.0              2003-05-?? [WRS]
 423 FreeBSD 5.1             2003-06-09 [FBD]
 424 Mac OS X 10.3           2003-10-24 [APL]
 425 FreeBSD 4.9             2003-10-28 [FBD]
 426 BSD/OS 5.1 ISE          2003-10-?? [WRS] (final version)
 427 OpenBSD 3.4             2003-11-01 [OBD]
 428 FreeBSD 5.2             2004-01-12 [FBD]
 429 FreeBSD 5.2.1           2004-02-22 [FBD] (patch release)
 430 NetBSD 1.6.2            2004-03-01 [NBD] (patch release)
 431 OpenBSD 3.5             2004-04-01 [OBD]
 432 FreeBSD 4.10            2004-05-27 [FBD]
 433 DragonFly 1.0           2004-07-12 [DFB]
 434 OpenBSD 3.6             2004-10-29 [OBD]
 435 FreeBSD 5.3             2004-11-06 [FBD]
 436 NetBSD 2.0              2004-12-09 [NBD]
 437 FreeBSD 4.11            2005-01-25 [FBD]
 438 DragonFly 1.2.0         2005-04-08 [DFB]
 439 NetBSD 2.0.2            2005-04-14 [NBD] (security/critical release)
 440 Mac OS X 10.4           2005-04-29 [APL]
 441 FreeBSD 5.4             2005-05-09 [FBD]
 442 OpenBSD 3.7             2005-05-19 [OBD]
 443 NetBSD 2.0.3            2005-10-31 [NBD] (security/critical release)
 444 OpenBSD 3.8             2005-11-01 [OBD]
 445 FreeBSD 6.0             2005-11-01 [FBD]
 446 NetBSD 2.1              2005-11-02 [NBD]
 447 NetBSD 3.0              2005-12-23 [NBD]
 448 DragonFly 1.4.0         2006-01-08 [DFB]
 449 OpenBSD 3.9             2006-05-01 [OBD]
 450 FreeBSD 6.1             2006-05-08 [FBD]
 451 FreeBSD 5.5             2006-05-25 [FBD]
 452 NetBSD 3.0.1            2006-07-24 [NBD] (security/critical release)
 453 DragonFly 1.6.0         2006-07-24 [DFB]
 454
 455 Bibliography
 456 ------------------------
 457
 458 Leffler, Samuel J., Marshall Kirk McKusick, Michael J Karels and John
 459 Quarterman. The Design and Implementation of the 4.3BSD UNIX Operating
 460 System. Reading, Mass. Addison-Wesley, 1989. ISBN 0-201-06196-1
 461
 462 Salus, Peter H. A quarter century of UNIX. Addison-Wesley Publishing
 463 Company, Inc., 1994. ISBN 0-201-54777-5
 464
 465 McKusick, Marshall Kirk, Keith Bostic, Michael J Karels, and John
 466 Quarterman. The Design and Implementation of the 4.4BSD Operating
 467 System. Reading, Mass. Addison-Wesley, 1996. ISBN 0-201-54979-4
 468
 469 McKusick, Marshall Kirk, George Neville-Neil. The Design and
 470 Implementation of the FreeBSD Operating System.
 471 Addison-Wesley Professional, Published: Aug 2, 2004. ISBN 0-201-70245-2
 472
 473 Doug McIlroy. Research Unix Reader.
 474
 475 Michael G. Brown. The Role of BSD in the Development of Unix.
 476 Presented to the Tasmanian Unix Special Interest Group of the
 477 Australian Computer Society, Hobart, August 1993.
 478
 479 Peter H. Salus. Unix at 25. Byte Magazine, October 1994.
 480 URL: http://www.byte.com/art/9410/sec8/art3.htm
 481
 482 Andreas Klemm, Lars Köller. If you're going to San Francisco ...
 483 Die freien BSD-Varianten von Unix. c't April 1997, page 368ff.
 484
 485 BSD Release Announcements collection.
 486 URL: http://www.de.FreeBSD.org/de/ftp/releases/
 487
 488 BSD Hypertext Man Pages
 489 URL: http://www.FreeBSD.org/cgi/man.cgi
 490
 491 UNIX history graphing project
 492 URL: http://minnie.tuhs.org/Unix_History/index.html
 493
 494 UNIX history
 495 URL: http://www.levenez.com/unix/
 496
 497 James Howard: The BSD Family Tree
 498 URL: http://ezine.daemonnews.org/200104/bsd_family.html
 499 ("what are the differences between FreeBSD, NetBSD, and OpenBSD?")
 500
 501
 502 Acknowledgments
 503 ---------------
 504
 505 Josh Gilliam for suggestions, bug fixes, and finding very old
 506 original BSD announcements from Usenet or tapes.
 507
 508 Steven M. Schultz for providing 2.8BSD, 2.10BSD, 2.11BSD manual pages.
 509
 510 --
 511 Copyright (c) 1997-2004 Wolfram Schneider <wosch@FreeBSD.ORG>
 512 URL: http://cvsweb.freebsd.org/src/share/misc/bsd-family-tree
 513
 514 $FreeBSD: src/share/misc/bsd-family-tree,v 1.107 2006/08/01 15:26:09 maxim Exp $
 515 $DragonFly: src/share/misc/bsd-family-tree,v 1.9 2006/09/10 22:04:38 swildner Exp $