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  |              |     |      |                 |                DragonFly 2.4.0
 233  |              |     |      |             OpenBSD 4.6                 |
 234  |              |     |      |                 |                       |
 235  *--FreeBSD     |     |      |                 |                       |
 236  |    8.0       |     |      |                 |                       |
 237  |     |    FreeBSD   |      |                 |                       |
 238  |     V      7.3     |      |                 |                DragonFly 2.6.0
 239  |                    |      |             OpenBSD 4.7                 |
 240  |                    |      |                 |                       |
 241 FreeBSD 9 -current    |  NetBSD -current  OpenBSD -current             |
 242  |                    |      |                 |                       |
 243  v                    v      v                 v                       v
 244
 245 Time
 246 ----------------
 247
 248 Time tolerance +/- 6 months, depending on which book/article you read; if it
 249 was the announcement in Usenet or if it was available as tape.
 250
 251 [44B] McKusick, Marshall Kirk, Keith Bostic, Michael J Karels,
 252         and John Quarterman. The Design and Implementation of
 253         the 4.4BSD Operating System.
 254 [APL] Apple website [http://www.apple.com/macosx/]
 255 [BSDI] Berkeley Software Design, Inc.
 256 [DFB] DragonFlyBSD Project, The.
 257 [DOC] README, COPYRIGHT on tape.
 258 [FBD] FreeBSD Project, The.
 259 [KB]  Keith Bostic. BSD2.10 available from Usenix. comp.unix.sources,
 260         Volume 11, Info 4, April, 1987.
 261 [KKK] Mike Karels, Kirk McKusick, and Keith Bostic. tahoe announcement.
 262         comp.bugs.4bsd.ucb-fixes, June 15, 1988.
 263 [KSJ] Michael J. Karels, Carl F. Smith, and William F. Jolitz.
 264         Changes in the Kernel in 2.9BSD. Second Berkeley Software
 265         Distribution UNIX Version 2.9, July, 1983.
 266 [NBD] NetBSD Project, The.
 267 [OBD] OpenBSD Project, The.
 268 [QCU] Salus, Peter H. A quarter century of UNIX.
 269 [SMS] Steven M. Schultz. 2.11BSD, UNIX for the PDP-11.
 270 [TUHS] The Unix Historical Society.  http://minnie.tuhs.org/Unix_History/.
 271 [USE] Usenet announcement.
 272 [WRS] Wind River Systems, Inc.
 273 [dmr] Dennis Ritchie, via E-Mail
 274
 275 Multics                 1965
 276 UNIX                    Summer 1969
 277                                 DEC PDP-7
 278 First   Edition         1971-11-03 [QCU]
 279                                 DEC PDP-11/20, Assembler
 280 Second  Edition         1972-06-12 [QCU]
 281                                 10 UNIX installations
 282 Third   Edition         1973-02-xx [QCU]
 283                                 Pipes, 16 installations
 284 Fourth  Edition         1973-11-xx [QCU]
 285                                 rewriting in C effected,
 286                                 above 30 installations
 287 Fifth   Edition         1974-06-xx [QCU]
 288                                 above 50 installations
 289 Sixth   Edition         1975-05-xx [QCU]
 290                                 port to DEC Vax
 291 Seventh Edition         1979-01-xx [QCU]
 292                                 first portable UNIX
 293 Eighth  Edition         1985-02-xx [QCU]
 294                                 VAX 11/750, VAX 11/780 [dmr]
 295                                 descended from 4.1c BSD [dmr]
 296                                 descended from 4.1 BSD [44B]
 297                         scooping-out and replacement of the character-device
 298                         and networking part by the streams mechanism
 299
 300 Ninth   Edition         1986-09-xx [QCU]
 301 Tenth   Edition         1989-10-xx [QCU]
 302
 303 1BSD                    late 1977
 304                         1978-03-09 [QCU]
 305                                 PDP-11, Pascal, ex(1)
 306                                 30 free copies of 1BSD sent out
 307                                 35 tapes sold for 50 USD [QCU]
 308 2BSD                    mid 1978 [QCU] 1979-05-10 [TUHS]
 309                                 75 2BSD tapes shipped
 310 2.79BSD                 1980-04-xx [TUHS]
 311 2.8BSD                  1981-07-xx [KSJ]
 312
 313 2.8.1BSD                1982-01-xx [QCU]
 314                                 set of performance improvements
 315 2.9BSD                  1983-07-xx [KSJ]
 316 2.9.1BSD                1983-11-xx [TUHS]
 317 2.9BSD-Seismo           1985-08-xx [SMS]
 318 2.10BSD                 1987-04-xx [KKK]
 319 2.10.1BSD               1989-01-xx [SMS]
 320 2.11BSD                 1992-02-xx [SMS]
 321 2.11BSD rev #430        1999-12-13 [SMS]
 322
 323 32V                     1978-1[01]-xx [QCU]
 324 3BSD                    late 1979 [QCU] March 1980 [TUHS]
 325                                 virtual memory, page replacement,
 326                                 demand paging
 327 4.0BSD                  1980-10-xx
 328 4.1BSD                  1981-07-08 [DOC]
 329 4.1aBSD                 1982-04-xx
 330                                 alpha release, 100 sites, networking [44B]
 331 4.1bBSD                         internal release, fast filesystem [44B]
 332 4.1cBSD                 late 1982
 333                                 beta release, IPC [44B]
 334 4.2BSD                  1983-09-xx [QCU]
 335                         1983-08-03 [DOC]
 336 4.3BSD                  1986-06-xx [QCU]
 337                         1986-04-05 [KB], [DOC]
 338 4.3BSD Tahoe            1988-06-15 [QCU], [DOC]
 339 4.3BSD NET/1            1988-11-xx [QCU]
 340                         1989-01-01 [DOC]
 341 4.3BSD Reno             1990-06-29 [QCU], [DOC]
 342 4.3BSD NET/2            1991-06-28 [QCU], [DOC]
 343
 344 BSD/386 ALPHA           1991-12-xx [BSDI]
 345                                 first code released to people outside BSDI
 346 386BSD 0.0              1992-02-xx [DOC]
 347 BSD/386 0.3.1           1992-04-xx [BSDI] first ext. beta; B customers
 348 BSD/386 0.3.3           1992-06-xx [BSDI] first CDROM version
 349 386BSD 0.1              1992-07-28 [DOC]
 350 4.4BSD Alpha            1992-07-07
 351 BSD/386 0.9.3           1992-10-xx [BSDI]
 352                                 first external gamma; G customers
 353 BSD/386 0.9.4           1992-12-xx [BSDI]
 354                                 would have been 1.0 except for request
 355                                 for preliminary injunction
 356 BSD/386 1.0             1993-03-xx [BSDI]
 357                                 injunction denied; first official release
 358 NetBSD 0.8              1993-04-20 [NBD]
 359 4.4BSD                  1993-06-01 [USE]
 360 NetBSD 0.9              1993-08-23 [NBD]
 361 FreeBSD 1.0             1993-11-01 [FBD]
 362 FreeBSD 1.0.2           1993-11-14 [FBD]
 363                                 supersedes 1.0 13 days after release.
 364 BSD/386 1.1             1994-02-xx [BSDI]
 365 4.4BSD Lite             1994-03-01 [USE]
 366 FreeBSD 1.1             1994-05-07 [FBD]
 367 FreeBSD 1.1.5           1994-06-30 [FBD]
 368 FreeBSD 1.1.5.1         1994-07-05 [FBD]
 369                                 supersedes 1.1.5 5 days after release.
 370 NetBSD 1.0              1994-10-26 [NBD]
 371 386BSD 1.0              1994-11-12 [USE]
 372 FreeBSD 2.0             1994-11-23 [FBD]
 373 BSD/OS 2.0              1995-01-xx [BSDI] 4.4 lite based
 374 FreeBSD 2.0.5           1995-06-10 [FBD]
 375 BSD/OS 2.0.1            1995-06-xx [BSDI]
 376 4.4BSD Lite Release 2   1995-06-xx [44B]
 377                                 the true final distribution from the CSRG
 378 FreeBSD 2.1.0           1995-11-19 [FBD]
 379 NetBSD 1.1              1995-11-26 [NBD]
 380 BSD/OS 2.1              1996-01-xx [BSDI]
 381 FreeBSD 2.1.5           1996-07-14 [FBD]
 382 NetBSD 1.2              1996-10-04 [NBD]
 383 OpenBSD 2.0             1996-10-18 [OBD]
 384 FreeBSD 2.1.6           1996-11-16 [FBD]
 385 FreeBSD 2.1.6.1         1996-11-25 [FBD] (sendmail security release)
 386 Rhapsody                1997-xx-xx
 387 FreeBSD 2.1.7           1997-02-20 [FBD]
 388 BSD/OS 3.0              1997-02-xx [BSDI] 4.4 lite2 based
 389 FreeBSD 2.2.0           1997-03-16 [FBD]
 390 FreeBSD 2.2.1           1997-03-25 [FBD]
 391 FreeBSD 2.2.2           1997-05-16 [FBD]
 392 NetBSD 1.2.1            1997-05-20 [NBD] (patch release)
 393 OpenBSD 2.1             1997-06-01 [OBD]
 394 FreeBSD 2.2.5           1997-10-22 [FBD]
 395 OpenBSD 2.2             1997-12-01 [OBD]
 396 NetBSD 1.3              1998-01-04 [NBD]
 397 FreeBSD 2.2.6           1998-03-25 [FBD]
 398 NetBSD 1.3.1            1998-03-09 [NBD] (patch release)
 399 BSD/OS 3.1              1998-03-xx [BSDI]
 400 OpenBSD 2.3             1998-05-19 [OBD]
 401 NetBSD 1.3.2            1998-05-29 [NBD] (patch release)
 402 FreeBSD 2.2.7           1998-07-22 [FBD]
 403 BSD/OS 4.0              1998-08-xx [BSDI]
 404                                 2-lock MP support, ELF executables
 405 FreeBSD 3.0             1998-10-16 [FBD]
 406                                 FreeBSD-3.0 is a snapshot from -current,
 407                                 while 3.1 and 3.2 are from 3.x-stable which
 408                                 was branched quite some time after 3.0-release
 409 FreeBSD 2.2.8           1998-11-29 [FBD]
 410 OpenBSD 2.4             1998-12-01 [OBD]
 411 NetBSD 1.3.3            1998-12-23 [NBD] (patch release)
 412 FreeBSD 3.1             1999-02-15 [FBD]
 413 BSD/OS 4.0.1            1999-03-xx [BSDI]
 414 NetBSD 1.4              1999-05-12 [NBD]
 415 FreeBSD 3.2             1999-05-17 [FBD]
 416 OpenBSD 2.5             1999-05-19 [OBD]
 417 NetBSD 1.4.1            1999-08-26 [NBD] (patch release)
 418 FreeBSD 3.3             1999-09-17 [FBD]
 419 OpenBSD 2.6             1999-12-01 [OBD]
 420 FreeBSD 3.4             1999-12-20 [FBD]
 421 BSD/OS 4.1              1999-12-xx [BSDI]
 422 FreeBSD 4.0             2000-03-13 [FBD]
 423 NetBSD 1.4.2            2000-03-19 [NBD] (patch release)
 424 OpenBSD 2.7             2000-06-15 [OBD]
 425 FreeBSD 3.5             2000-06-24 [FBD]
 426 FreeBSD 4.1             2000-07-27 [FBD]
 427 FreeBSD 3.5.1           2000-07-28 [FBD]
 428 FreeBSD 4.1.1           2000-09-25 [FBD] (a network-only patch release)
 429 FreeBSD 4.2             2000-11-21 [FBD]
 430 NetBSD 1.4.3            2000-11-25 [NBD] (patch release)
 431 BSD/OS 4.2              2000-11-29 [BSDI]
 432 OpenBSD 2.8             2000-12-01 [OBD]
 433 NetBSD 1.5              2000-12-06 [NBD]
 434 Mac OS X 10.0           2001-03-24 [APL]
 435 FreeBSD 4.3             2001-04-20 [FBD]
 436 OpenBSD 2.9             2001-06-01 [OBD]
 437 NetBSD 1.5.1            2001-07-11 [NBD] (patch release)
 438 NetBSD 1.5.2            2001-09-13 [NBD] (patch release)
 439 FreeBSD 4.4             2001-09-18 [FBD]
 440 Mac OS X 10.1           2001-09-29 [APL]
 441 OpenBSD 3.0             2001-12-01 [OBD]
 442 FreeBSD 4.5             2002-01-29 [FBD]
 443 BSD/OS 4.3              2002-03-14 [WRS]
 444 OpenBSD 3.1             2002-05-19 [OBD]
 445 FreeBSD 4.6             2002-06-15 [FBD]
 446 NetBSD 1.5.3            2002-07-22 [NBD] (patch release)
 447 FreeBSD 4.6.2           2002-08-15 [FBD] (patch release)
 448 Mac OS X 10.2           2002-08-23 [APL]
 449 NetBSD 1.6              2002-09-14 [NBD]
 450 FreeBSD 4.7             2002-10-08 [FBD]
 451 OpenBSD 3.2             2002-11-01 [OBD]
 452 FreeBSD 5.0             2003-01-17 [FBD]
 453                                 FreeBSD 5.0 is a separate branch off of
 454                                 -current, similar to 3.0.
 455 FreeBSD 4.8             2003-04-03 [FBD]
 456 NetBSD 1.6.1            2003-04-21 [NBD] (patch release)
 457 OpenBSD 3.3             2003-05-01 [OBD]
 458 BSD/OS 5.0              2003-05-?? [WRS]
 459 FreeBSD 5.1             2003-06-09 [FBD]
 460 Mac OS X 10.3           2003-10-24 [APL]
 461 FreeBSD 4.9             2003-10-28 [FBD]
 462 BSD/OS 5.1 ISE          2003-10-?? [WRS] (final version)
 463 OpenBSD 3.4             2003-11-01 [OBD]
 464 FreeBSD 5.2             2004-01-12 [FBD]
 465 FreeBSD 5.2.1           2004-02-22 [FBD] (patch release)
 466 NetBSD 1.6.2            2004-03-01 [NBD] (patch release)
 467 OpenBSD 3.5             2004-04-01 [OBD]
 468 FreeBSD 4.10            2004-05-27 [FBD]
 469 DragonFly 1.0           2004-07-12 [DFB]
 470 OpenBSD 3.6             2004-10-29 [OBD]
 471 FreeBSD 5.3             2004-11-06 [FBD]
 472 NetBSD 2.0              2004-12-09 [NBD]
 473 FreeBSD 4.11            2005-01-25 [FBD]
 474 DragonFly 1.2.0         2005-04-08 [DFB]
 475 NetBSD 2.0.2            2005-04-14 [NBD] (security/critical release)
 476 Mac OS X 10.4           2005-04-29 [APL]
 477 FreeBSD 5.4             2005-05-09 [FBD]
 478 OpenBSD 3.7             2005-05-19 [OBD]
 479 NetBSD 2.0.3            2005-10-31 [NBD] (security/critical release)
 480 OpenBSD 3.8             2005-11-01 [OBD]
 481 FreeBSD 6.0             2005-11-01 [FBD]
 482 NetBSD 2.1              2005-11-02 [NBD]
 483 NetBSD 3.0              2005-12-23 [NBD]
 484 DragonFly 1.4.0         2006-01-08 [DFB]
 485 OpenBSD 3.9             2006-05-01 [OBD]
 486 FreeBSD 6.1             2006-05-08 [FBD]
 487 FreeBSD 5.5             2006-05-25 [FBD]
 488 NetBSD 3.0.1            2006-07-24 [NBD] (security/critical release)
 489 DragonFly 1.6.0         2006-07-24 [DFB]
 490 OpenBSD 4.0             2006-11-01 [OBD]
 491 NetBSD 3.0.2            2006-11-04 [NBD] (security/critical release)
 492 NetBSD 3.1              2006-11-04 [NBD]
 493 FreeBSD 6.2             2007-01-15 [FBD]
 494 DragonFly 1.8.0         2007-01-30 [DFB]
 495 OpenBSD 4.1             2007-05-01 [OBD]
 496 DragonFly 1.10.0        2007-08-06 [DFB]
 497 Mac OS X 10.5           2007-10-26 [APL]
 498 OpenBSD 4.2             2007-11-01 [OBD]
 499 NetBSD 4.0              2007-12-19 [NBD]
 500 FreeBSD 6.3             2008-01-18 [FBD]
 501 DragonFly 1.12.0        2008-02-26 [DFB]
 502 FreeBSD 7.0             2008-02-27 [FBD]
 503 OpenBSD 4.3             2008-05-01 [OBD]
 504 DragonFly 2.0.0         2008-07-21 [DFB]
 505 OpenBSD 4.4             2008-11-01 [OBD]
 506 FreeBSD 6.4             2008-11-28 [FBD]
 507 FreeBSD 7.1             2009-01-04 [FBD]
 508 DragonFly 2.2.0         2009-02-17 [DFB]
 509 NetBSD 5.0              2009-04-29 [NBD]
 510 OpenBSD 4.5             2009-05-01 [OBD]
 511 FreeBSD 7.2             2009-05-04 [FBD]
 512 DragonFly 2.4.0         2009-09-16 [DFB]
 513 OpenBSD 4.6             2009-10-18 [OBD]
 514 FreeBSD 8.0             2009-11-26 [FBD]
 515 FreeBSD 7.3             2010-03-23 [FBD]
 516 DragonFly 2.6.0         2010-03-28 [DFB]
 517 OpenBSD 4.7             2010-05-19 [OBD]
 518
 519 Bibliography
 520 ------------------------
 521
 522 Leffler, Samuel J., Marshall Kirk McKusick, Michael J Karels and John
 523 Quarterman. The Design and Implementation of the 4.3BSD UNIX Operating
 524 System. Reading, Mass. Addison-Wesley, 1989. ISBN 0-201-06196-1
 525
 526 Salus, Peter H. A quarter century of UNIX. Addison-Wesley Publishing
 527 Company, Inc., 1994. ISBN 0-201-54777-5
 528
 529 McKusick, Marshall Kirk, Keith Bostic, Michael J Karels, and John
 530 Quarterman. The Design and Implementation of the 4.4BSD Operating
 531 System. Reading, Mass. Addison-Wesley, 1996. ISBN 0-201-54979-4
 532
 533 McKusick, Marshall Kirk, George Neville-Neil. The Design and
 534 Implementation of the FreeBSD Operating System.
 535 Addison-Wesley Professional, Published: Aug 2, 2004. ISBN 0-201-70245-2
 536
 537 Doug McIlroy. Research Unix Reader.
 538
 539 Michael G. Brown. The Role of BSD in the Development of Unix.
 540 Presented to the Tasmanian Unix Special Interest Group of the
 541 Australian Computer Society, Hobart, August 1993.
 542
 543 Peter H. Salus. Unix at 25. Byte Magazine, October 1994.
 544 URL: http://www.byte.com/art/9410/sec8/art3.htm
 545
 546 Andreas Klemm, Lars Köller. If you're going to San Francisco ...
 547 Die freien BSD-Varianten von Unix. c't April 1997, page 368ff.
 548
 549 BSD Release Announcements collection.
 550 URL: http://www.FreeBSD.org/releases/
 551
 552 BSD Hypertext Man Pages
 553 URL: http://www.FreeBSD.org/cgi/man.cgi
 554
 555 UNIX history graphing project
 556 URL: http://minnie.tuhs.org/Unix_History/index.html
 557
 558 UNIX history
 559 URL: http://www.levenez.com/unix/
 560
 561 James Howard: The BSD Family Tree
 562 URL: http://ezine.daemonnews.org/200104/bsd_family.html
 563 ("what are the differences between FreeBSD, NetBSD, and OpenBSD?")
 564
 565
 566 Acknowledgments
 567 ---------------
 568
 569 Josh Gilliam for suggestions, bug fixes, and finding very old
 570 original BSD announcements from Usenet or tapes.
 571
 572 Steven M. Schultz for providing 2.8BSD, 2.10BSD, 2.11BSD manual pages.
 573
 574 --
 575 Copyright (c) 1997-2007 Wolfram Schneider <wosch@FreeBSD.ORG>
 576 URL: http://cvsweb.freebsd.org/src/share/misc/bsd-family-tree
 577
 578 $FreeBSD: src/share/misc/bsd-family-tree,v 1.138 2010/05/20 08:07:25 maxim Exp $