share/misc/bsd-family-tree

   1 The UNIX system family tree: Research and BSD
   2 ---------------------------------------------
   3
   4 First Edition (V1)
   5      |
   6 Second Edition (V2)
   7      |
   8 Third Edition (V3)
   9      |
  10 Fourth Edition (V4)
  11      |
  12 Fifth Edition (V5)
  13      |
  14 Sixth Edition (V6) -----*
  15        \                |
  16         \               |
  17          \              |
  18 Seventh Edition (V7)    |
  19             \           |
  20              \        1BSD
  21              32V        |
  22                \      2BSD---------------*
  23                 \    /                   |
  24                  \  /                    |
  25                   \/                     |
  26                  3BSD                    |
  27                   |                      |
  28                4.0BSD                2.79BSD
  29                   |                      |
  30                4.1BSD --------------> 2.8BSD
  31                   |                      |
  32               4.1aBSD -----------\       |
  33                   |                \     |
  34               4.1bBSD                \   |
  35                   |                    \ |
  36       *------ 4.1cBSD --------------> 2.9BSD
  37      /            |                      |
  38 Eighth Edition    |                   2.9BSD-Seismo
  39      |            |                      |
  40      +----<--- 4.2BSD               2.9.1BSD
  41      |            |                      |
  42      +----<--- 4.3BSD -------------> 2.10BSD
  43      |            |               /      |
  44 Ninth Edition     |              / 2.10.1BSD
  45      |         4.3BSD Tahoe-----+        |
  46      |            |              \       |
  47      |            |                \     |
  48      v            |                  2.11BSD
  49 Tenth Edition     |                      |
  50                   |                  2.11BSD rev #430
  51                4.3BSD NET/1              |
  52                   |                      v
  53                4.3BSD Reno
  54                   |
  55    *---------- 4.3BSD NET/2 -------------------+-------------*
  56    |                    |                      |             |
  57 386BSD 0.0              |                      |           BSD/386 ALPHA
  58    |                    |                      |             |
  59 386BSD 0.1 ------------>+                      |           BSD/386 0.3.[13]
  60    |     \              |                  4.4BSD Alpha      |
  61    |     386BSD 1.0     |                      |           BSD/386 0.9.[34]
  62    |                    |                  4.4BSD            |
  63    |                    |                    / |             |
  64    |                    |   4.4BSD-Encumbered  |             |
  65    |                 NetBSD 0.8                |           BSD/386 1.0
  66    |                    |                      |             |
  67 FreeBSD 1.0          NetBSD 0.9                |           BSD/386 1.1
  68    |                    |           .----- 4.4BSD Lite       |
  69 FreeBSD 1.1             |          /   /       |     \       |
  70    |                    |         /   /        |      \      |
  71 FreeBSD 1.1.5       .---|--------'   /         |       \     |
  72    |               /    |           /          |        \    |
  73 FreeBSD 1.1.5.1   /     |          /           |         \   |
  74    |             /   NetBSD 1.0 <-'            |          \  |
  75    |            /       |                      |           \ |
  76 FreeBSD 2.0 <--'        |                      |           BSD/OS 2.0
  77    |                     \                     |             |
  78 FreeBSD 2.0.5             \                    |           BSD/OS 2.0.1
  79    |                 .-----\------------- 4.4BSD Lite2       |
  80    |                 |      \             |  |   |   |       |
  81    |                 | .-----|------Rhapsody |   |   |       |
  82    |                 | |     |        NetBSD 1.3 |   |       |
  83    |                 | |     |           OpenBSD 2.3 |       |
  84    |                 | |     |                BSD/OS 3.0     |
  85 FreeBSD 2.1          | |     |                               |
  86  |   |               | |  NetBSD 1.1 ------.               BSD/OS 2.1
  87  | FreeBSD 2.1.5     | |     |              \                |
  88  |     |             | |  NetBSD 1.2         \             BSD/OS 3.0
  89  | FreeBSD 2.1.6     | |     |  \          OpenBSD 2.0       |
  90  |     |             | |     |   \             |             |
  91  | FreeBSD 2.1.6.1   | |     |    \            |             |
  92  |     |             | |     |     \           |             |
  93  | FreeBSD 2.1.7     | |     |      |          |             |
  94  |     |             | |     |  NetBSD 1.2.1   |             |
  95  | FreeBSD 2.1.7.1   | |     |                 |             |
  96  |                   | |     |                 |             |
  97  |                   | |     |                 |             |
  98  *-FreeBSD 2.2       | |     |                 |             |
  99  |        \          | |     |                 |             |
 100  |     FreeBSD 2.2.1 | |     |                 |             |
 101  |         |         | |     |                 |             |
 102  |     FreeBSD 2.2.2 | |     |             OpenBSD 2.1       |
 103  |         |         | |     |                 |             |
 104  |     FreeBSD 2.2.5 | |     |                 |             |
 105  |         |         | |     |             OpenBSD 2.2       |
 106  |         |         | |  NetBSD 1.3           |             |
 107  |     FreeBSD 2.2.6 | |     |    |            |             |
 108  |         |         | |     | NetBSD 1.3.1    |           BSD/OS 3.1
 109  |         |         | |     |    |        OpenBSD 2.3       |
 110  |         |         | |     | NetBSD 1.3.2    |             |
 111  |     FreeBSD 2.2.7 | |     |    |            |             |
 112  |         |         | |     |    |            |           BSD/OS 4.0
 113  |         v         | |     |    |            |             |
 114  |     FreeBSD 2.2.8 | |     |    |            |             |
 115  |                   | |     |    |        OpenBSD 2.4       |
 116 FreeBSD 3.0 <--------* |     |    v            |             |
 117  |                     |     | NetBSD 1.3.3    |             |
 118  *---FreeBSD 3.1       |     |                 |             |
 119  |       |             |     |                 |           BSD/OS 4.0.1
 120  |   FreeBSD 3.2----*  |  NetBSD 1.4       OpenBSD 2.5       |
 121  |       |          |  |  |  |    |            |             |
 122  |       |          |  |  |  |    |            |             |
 123  |       |          |  |  |  |    |            |             |
 124  |   FreeBSD 3.3    |  |  |  | NetBSD 1.4.1    |             |
 125  |       |          |  |  |  |    |        OpenBSD 2.6       |
 126  |   FreeBSD 3.4    |  |  |  |    |            |             |
 127  |           |      |  |  |  |    |            |           BSD/OS 4.1
 128 FreeBSD 4.0  |      |  |  |  | NetBSD 1.4.2    |             |
 129  |           |      |  |  |  |    |            |             |
 130  |           |      |  |  |  |    |            |             |
 131  |   FreeBSD 3.5    |  |  |  |    |        OpenBSD 2.7       |
 132  |           |      |  |  |  |    |            |             |
 133  |   FreeBSD 3.5.1  |  |  |  |    |            |             |
 134  |                  |  |  |  |    |            |             |
 135  *---FreeBSD 4.1    |  |  |  |    |            |             |
 136  |      |           |  | (?) |    |            |             |
 137  |   FreeBSD 4.1.1  |  |  /  |    |            |             |
 138  |      |           |  | /   |    |            |             |
 139  |   FreeBSD 4.2   Darwin/   | NetBSD 1.4.3    |             |
 140  |      |         Mac OS X   |             OpenBSD 2.8     BSD/OS 4.2
 141  |      |             |      |                 |             |
 142  |      |             |      |                 |             |
 143  |      |           10.0  NetBSD 1.5           |             |
 144  |   FreeBSD 4.3      |      |    |            |             |
 145  |      |             |      |    |        OpenBSD 2.9       |
 146  |      |             |      | NetBSD 1.5.1    |             |
 147  |      |             |      |    |            |             |
 148  |   FreeBSD 4.4-.    |      | NetBSD 1.5.2    |             |
 149  |      |        | Mac OS X  |    |            |             |
 150  |      |        |   10.1    |    |        OpenBSD 3.0       |
 151  |   FreeBSD 4.5 |    |      |    |            |             |
 152  |      |         \   |      |    |            |           BSD/OS 4.3
 153  |   FreeBSD 4.6   \  |      |    |        OpenBSD 3.1       |
 154  |      |           \ |      | NetBSD 1.5.3    |             |
 155  |   FreeBSD 4.6.2 Mac OS X  |                 |             |
 156  |      |            10.2    |                 |             |
 157  |   FreeBSD 4.7      |      |                 |             |
 158  |      |             |   NetBSD 1.6       OpenBSD 3.2       |
 159  |   FreeBSD 4.8      |      |    |            |             |
 160  |      |             |      | NetBSD 1.6.1    |             |
 161  |      |--------.    |      |    |        OpenBSD 3.3     BSD/OS 5.0
 162  |      |         \   |      |    |            |             |
 163  |   FreeBSD 4.9   |  |      |    |        OpenBSD 3.4     BSD/OS 5.1 ISE
 164  |      |          |  |      |    |            |
 165  |      |          |  |      | NetBSD 1.6.2    |
 166  |      |          |  |      |    |            |
 167  |      |          |  |      |    |        OpenBSD 3.5
 168  |      |          |  |      |    v            |
 169  |   FreeBSD 4.10  |  |      |                 |
 170  |      |          |  |      |                 |
 171  |   FreeBSD 4.11  |  |      |                 |
 172  |                 |  |      |                 |
 173  |                  `-|------|-----------------|---------------------.
 174  |                    |      |                 |                      \
 175 FreeBSD 5.0           |      |                 |                       |
 176  |                    |      |                 |                       |
 177 FreeBSD 5.1           |      |                 |                 DragonFly 1.0
 178  |          \         |      |                 |                       |
 179  |           ----- Mac OS X  |                 |                       |
 180  |                   10.3    |                 |                       |
 181 FreeBSD 5.2           |      |                 |                       |
 182  |      |             |      |                 |                       |
 183  |   FreeBSD 5.2.1    |      |                 |                       |
 184  |                    |      |                 |                       |
 185  *-------FreeBSD 5.3  |      |                 |                       |
 186  |           |        |      |             OpenBSD 3.6                 |
 187  |           |        |   NetBSD 2.0           |                       |
 188  |           |        |      | |  |            |                DragonFly 1.2.0
 189  |           |     Mac OS X  | | NetBSD 2.0.2  |                       |
 190  |           |       10.4    | |  |            |                       |
 191  |       FreeBSD 5.4  |      | |  |            |                       |
 192  |           |        |      | |  |        OpenBSD 3.7                 |
 193  |           |        |      | | NetBSD 2.0.3  |                       |
 194  |           |        |      | |  |            |                       |
 195  *--FreeBSD  |        |      | |  v        OpenBSD 3.8                 |
 196  |    6.0    |        |      | |               |                       |
 197  |     |     |        |      |  \              |                       |
 198  |     |     |        |      | NetBSD 2.1      |                       |
 199  |     |     |        |      |                 |                       |
 200  |     |     |        |   NetBSD 3.0           |                       |
 201  |     |     |        |      | |  |            |                DragonFly 1.4.0
 202  |     |     |        |      | |  |        OpenBSD 3.9                 |
 203  |  FreeBSD  |        |      | |  |            |                       |
 204  |    6.1    |        |      | |  |            |                       |
 205  |     |  FreeBSD 5.5 |      | |  |            |                       |
 206  |     |              |      | | NetBSD 3.0.1  |                DragonFly 1.6.0
 207  |     |              |      | |  |            |                       |
 208  |     |              |      | |  |        OpenBSD 4.0                 |
 209  |     |              |      | | NetBSD 3.0.2  |                       |
 210  |     |              |      | NetBSD 3.1      |                       |
 211  | FreeBSD 6.2        |      |                 |                       |
 212  |     |              |      |                 |                DragonFly 1.8.0
 213  |     |              |      |             OpenBSD 4.1                 |
 214  |     |              |      |                 |                DragonFly 1.10.0
 215  |     |           Mac OS X  |                 |                       |
 216  |     |             10.5    |                 |                       |
 217  |     |              |      |             OpenBSD 4.2                 |
 218  |     |              |   NetBSD 4.0           |                       |
 219  | FreeBSD 6.3        |      |                 |                       |
 220  |            \       |      |                 |                       |
 221  *--FreeBSD    |      |      |                 |                DragonFly 1.12.0
 222  |    7.0      |      |      |                 |                       |
 223  |     |       |      |      |             OpenBSD 4.3                 |
 224  |     |       |      |      |                 |                DragonFly 2.0.0
 225  |     |    FreeBSD   |      |             OpenBSD 4.4                 |
 226  |     |      6.4     |      |                 |                       |
 227  |     |              |      |                 |                       |
 228  |  FreeBSD 7.1       |      |                 |                       |
 229  |     |              |      |                 |                DragonFly 2.2.0
 230  |  FreeBSD 7.2       |   NetBSD 5.0       OpenBSD 4.5                 |
 231  |             \      |      |    |            |                       |
 232  |              |  Mac OS X  |    |            |                       |
 233  |              |    10.6    |    |            |                       |
 234  |              |     |      |    |            |                DragonFly 2.4.0
 235  |              |     |      |    |        OpenBSD 4.6                 |
 236  |              |     |      |    |            |                       |
 237  *--FreeBSD     |     |      |    |            |                       |
 238  |    8.0       |     |      |    |            |                       |
 239  |     |     FreeBSD  |      |    |            |                       |
 240  |     |       7.3    |      |    |            |                DragonFly 2.6.0
 241  |     |        |     |      |    |        OpenBSD 4.7                 |
 242  |  FreeBSD     |     |      |    |            |                       |
 243  |    8.1       |     |      |    |            |                       |
 244  |     |        |     |      |    |            |                DragonFly 2.8.2
 245  |     |        |     |      |    |        OpenBSD 4.8                 |
 246  |     |        |     |      | NetBSD 5.1      |                       |
 247  |  FreeBSD  FreeBSD  |      |                 |                       |
 248  |    8.2      7.4    |      |                 |               DragonFly 2.10.1
 249  |     v              |      |             OpenBSD 4.9                 |
 250  |                 Mac OS X  |                 |                       |
 251  |                   10.7    |                 |                       |
 252  |                    |      |             OpenBSD 5.0                 |
 253  +--FreeBSD           |      |                 |                       |
 254  |    9.0             |      |                 |               DragonFly 3.0.1
 255  |     v              |      |                 |                       |
 256  |                    |      |                 |                       |
 257 FreeBSD 10 -current   |  NetBSD -current  OpenBSD -current             |
 258  |                    |      |                 |                       |
 259  v                    v      v                 v                       v
 260
 261 Time
 262 ----------------
 263
 264 Time tolerance +/- 6 months, depending on which book/article you read; if it
 265 was the announcement in Usenet or if it was available as tape.
 266
 267 [44B] McKusick, Marshall Kirk, Keith Bostic, Michael J Karels,
 268         and John Quarterman. The Design and Implementation of
 269         the 4.4BSD Operating System.
 270 [APL] Apple website [http://www.apple.com/macosx/]
 271 [BSDI] Berkeley Software Design, Inc.
 272 [DFB] DragonFlyBSD Project, The.
 273 [DOC] README, COPYRIGHT on tape.
 274 [FBD] FreeBSD Project, The.
 275 [KB]  Keith Bostic. BSD2.10 available from Usenix. comp.unix.sources,
 276         Volume 11, Info 4, April, 1987.
 277 [KKK] Mike Karels, Kirk McKusick, and Keith Bostic. tahoe announcement.
 278         comp.bugs.4bsd.ucb-fixes, June 15, 1988.
 279 [KSJ] Michael J. Karels, Carl F. Smith, and William F. Jolitz.
 280         Changes in the Kernel in 2.9BSD. Second Berkeley Software
 281         Distribution UNIX Version 2.9, July, 1983.
 282 [NBD] NetBSD Project, The.
 283 [OBD] OpenBSD Project, The.
 284 [QCU] Salus, Peter H. A quarter century of UNIX.
 285 [SMS] Steven M. Schultz. 2.11BSD, UNIX for the PDP-11.
 286 [TUHS] The Unix Historical Society.  http://minnie.tuhs.org/Unix_History/.
 287 [USE] Usenet announcement.
 288 [WRS] Wind River Systems, Inc.
 289 [dmr] Dennis Ritchie, via E-Mail
 290
 291 Multics                 1965
 292 UNIX                    Summer 1969
 293                                 DEC PDP-7
 294 First   Edition         1971-11-03 [QCU]
 295                                 DEC PDP-11/20, Assembler
 296 Second  Edition         1972-06-12 [QCU]
 297                                 10 UNIX installations
 298 Third   Edition         1973-02-xx [QCU]
 299                                 Pipes, 16 installations
 300 Fourth  Edition         1973-11-xx [QCU]
 301                                 rewriting in C effected,
 302                                 above 30 installations
 303 Fifth   Edition         1974-06-xx [QCU]
 304                                 above 50 installations
 305 Sixth   Edition         1975-05-xx [QCU]
 306                                 port to DEC Vax
 307 Seventh Edition         1979-01-xx [QCU]
 308                                 first portable UNIX
 309 Eighth  Edition         1985-02-xx [QCU]
 310                                 VAX 11/750, VAX 11/780 [dmr]
 311                                 descended from 4.1c BSD [dmr]
 312                                 descended from 4.1 BSD [44B]
 313                         scooping-out and replacement of the character-device
 314                         and networking part by the streams mechanism
 315
 316 Ninth   Edition         1986-09-xx [QCU]
 317 Tenth   Edition         1989-10-xx [QCU]
 318
 319 1BSD                    late 1977
 320                         1978-03-09 [QCU]
 321                                 PDP-11, Pascal, ex(1)
 322                                 30 free copies of 1BSD sent out
 323                                 35 tapes sold for 50 USD [QCU]
 324 2BSD                    mid 1978 [QCU] 1979-05-10 [TUHS]
 325                                 75 2BSD tapes shipped
 326 2.79BSD                 1980-04-xx [TUHS]
 327 2.8BSD                  1981-07-xx [KSJ]
 328
 329 2.8.1BSD                1982-01-xx [QCU]
 330                                 set of performance improvements
 331 2.9BSD                  1983-07-xx [KSJ]
 332 2.9.1BSD                1983-11-xx [TUHS]
 333 2.9BSD-Seismo           1985-08-xx [SMS]
 334 2.10BSD                 1987-04-xx [KKK]
 335 2.10.1BSD               1989-01-xx [SMS]
 336 2.11BSD                 1992-02-xx [SMS]
 337 2.11BSD rev #430        1999-12-13 [SMS]
 338
 339 32V                     1978-1[01]-xx [QCU]
 340 3BSD                    late 1979 [QCU] March 1980 [TUHS]
 341                                 virtual memory, page replacement,
 342                                 demand paging
 343 4.0BSD                  1980-10-xx
 344 4.1BSD                  1981-07-08 [DOC]
 345 4.1aBSD                 1982-04-xx
 346                                 alpha release, 100 sites, networking [44B]
 347 4.1bBSD                         internal release, fast filesystem [44B]
 348 4.1cBSD                 late 1982
 349                                 beta release, IPC [44B]
 350 4.2BSD                  1983-09-xx [QCU]
 351                         1983-08-03 [DOC]
 352 4.3BSD                  1986-06-xx [QCU]
 353                         1986-04-05 [KB], [DOC]
 354 4.3BSD Tahoe            1988-06-15 [QCU], [DOC]
 355 4.3BSD NET/1            1988-11-xx [QCU]
 356                         1989-01-01 [DOC]
 357 4.3BSD Reno             1990-06-29 [QCU], [DOC]
 358 4.3BSD NET/2            1991-06-28 [QCU], [DOC]
 359
 360 BSD/386 ALPHA           1991-12-xx [BSDI]
 361                                 first code released to people outside BSDI
 362 386BSD 0.0              1992-02-xx [DOC]
 363 BSD/386 0.3.1           1992-04-xx [BSDI] first ext. beta; B customers
 364 BSD/386 0.3.3           1992-06-xx [BSDI] first CDROM version
 365 386BSD 0.1              1992-07-28 [DOC]
 366 4.4BSD Alpha            1992-07-07
 367 BSD/386 0.9.3           1992-10-xx [BSDI]
 368                                 first external gamma; G customers
 369 BSD/386 0.9.4           1992-12-xx [BSDI]
 370                                 would have been 1.0 except for request
 371                                 for preliminary injunction
 372 BSD/386 1.0             1993-03-xx [BSDI]
 373                                 injunction denied; first official release
 374 NetBSD 0.8              1993-04-20 [NBD]
 375 4.4BSD                  1993-06-01 [USE]
 376 NetBSD 0.9              1993-08-23 [NBD]
 377 FreeBSD 1.0             1993-11-01 [FBD]
 378 FreeBSD 1.0.2           1993-11-14 [FBD]
 379                                 supersedes 1.0 13 days after release.
 380 BSD/386 1.1             1994-02-xx [BSDI]
 381 4.4BSD Lite             1994-03-01 [USE]
 382 FreeBSD 1.1             1994-05-07 [FBD]
 383 FreeBSD 1.1.5           1994-06-30 [FBD]
 384 FreeBSD 1.1.5.1         1994-07-05 [FBD]
 385                                 supersedes 1.1.5 5 days after release.
 386 NetBSD 1.0              1994-10-26 [NBD]
 387 386BSD 1.0              1994-11-12 [USE]
 388 FreeBSD 2.0             1994-11-23 [FBD]
 389 BSD/OS 2.0              1995-01-xx [BSDI] 4.4 lite based
 390 FreeBSD 2.0.5           1995-06-10 [FBD]
 391 BSD/OS 2.0.1            1995-06-xx [BSDI]
 392 4.4BSD Lite Release 2   1995-06-xx [44B]
 393                                 the true final distribution from the CSRG
 394 FreeBSD 2.1.0           1995-11-19 [FBD]
 395 NetBSD 1.1              1995-11-26 [NBD]
 396 BSD/OS 2.1              1996-01-xx [BSDI]
 397 FreeBSD 2.1.5           1996-07-14 [FBD]
 398 NetBSD 1.2              1996-10-04 [NBD]
 399 OpenBSD 2.0             1996-10-18 [OBD]
 400 FreeBSD 2.1.6           1996-11-16 [FBD]
 401 FreeBSD 2.1.6.1         1996-11-25 [FBD] (sendmail security release)
 402 Rhapsody                1997-xx-xx
 403 FreeBSD 2.1.7           1997-02-20 [FBD]
 404 BSD/OS 3.0              1997-02-xx [BSDI] 4.4 lite2 based
 405 FreeBSD 2.2.0           1997-03-16 [FBD]
 406 FreeBSD 2.2.1           1997-03-25 [FBD]
 407 FreeBSD 2.2.2           1997-05-16 [FBD]
 408 NetBSD 1.2.1            1997-05-20 [NBD] (patch release)
 409 OpenBSD 2.1             1997-06-01 [OBD]
 410 FreeBSD 2.2.5           1997-10-22 [FBD]
 411 OpenBSD 2.2             1997-12-01 [OBD]
 412 NetBSD 1.3              1998-01-04 [NBD]
 413 FreeBSD 2.2.6           1998-03-25 [FBD]
 414 NetBSD 1.3.1            1998-03-09 [NBD] (patch release)
 415 BSD/OS 3.1              1998-03-xx [BSDI]
 416 OpenBSD 2.3             1998-05-19 [OBD]
 417 NetBSD 1.3.2            1998-05-29 [NBD] (patch release)
 418 FreeBSD 2.2.7           1998-07-22 [FBD]
 419 BSD/OS 4.0              1998-08-xx [BSDI]
 420                                 2-lock MP support, ELF executables
 421 FreeBSD 3.0             1998-10-16 [FBD]
 422                                 FreeBSD-3.0 is a snapshot from -current,
 423                                 while 3.1 and 3.2 are from 3.x-stable which
 424                                 was branched quite some time after 3.0-release
 425 FreeBSD 2.2.8           1998-11-29 [FBD]
 426 OpenBSD 2.4             1998-12-01 [OBD]
 427 NetBSD 1.3.3            1998-12-23 [NBD] (patch release)
 428 FreeBSD 3.1             1999-02-15 [FBD]
 429 BSD/OS 4.0.1            1999-03-xx [BSDI]
 430 NetBSD 1.4              1999-05-12 [NBD]
 431 FreeBSD 3.2             1999-05-17 [FBD]
 432 OpenBSD 2.5             1999-05-19 [OBD]
 433 NetBSD 1.4.1            1999-08-26 [NBD] (patch release)
 434 FreeBSD 3.3             1999-09-17 [FBD]
 435 OpenBSD 2.6             1999-12-01 [OBD]
 436 FreeBSD 3.4             1999-12-20 [FBD]
 437 BSD/OS 4.1              1999-12-xx [BSDI]
 438 FreeBSD 4.0             2000-03-13 [FBD]
 439 NetBSD 1.4.2            2000-03-19 [NBD] (patch release)
 440 OpenBSD 2.7             2000-06-15 [OBD]
 441 FreeBSD 3.5             2000-06-24 [FBD]
 442 FreeBSD 4.1             2000-07-27 [FBD]
 443 FreeBSD 3.5.1           2000-07-28 [FBD]
 444 FreeBSD 4.1.1           2000-09-25 [FBD] (a network-only patch release)
 445 FreeBSD 4.2             2000-11-21 [FBD]
 446 NetBSD 1.4.3            2000-11-25 [NBD] (patch release)
 447 BSD/OS 4.2              2000-11-29 [BSDI]
 448 OpenBSD 2.8             2000-12-01 [OBD]
 449 NetBSD 1.5              2000-12-06 [NBD]
 450 Mac OS X 10.0           2001-03-24 [APL]
 451 FreeBSD 4.3             2001-04-20 [FBD]
 452 OpenBSD 2.9             2001-06-01 [OBD]
 453 NetBSD 1.5.1            2001-07-11 [NBD] (patch release)
 454 NetBSD 1.5.2            2001-09-13 [NBD] (patch release)
 455 FreeBSD 4.4             2001-09-18 [FBD]
 456 Mac OS X 10.1           2001-09-29 [APL]
 457 OpenBSD 3.0             2001-12-01 [OBD]
 458 FreeBSD 4.5             2002-01-29 [FBD]
 459 BSD/OS 4.3              2002-03-14 [WRS]
 460 OpenBSD 3.1             2002-05-19 [OBD]
 461 FreeBSD 4.6             2002-06-15 [FBD]
 462 NetBSD 1.5.3            2002-07-22 [NBD] (patch release)
 463 FreeBSD 4.6.2           2002-08-15 [FBD] (patch release)
 464 Mac OS X 10.2           2002-08-23 [APL]
 465 NetBSD 1.6              2002-09-14 [NBD]
 466 FreeBSD 4.7             2002-10-08 [FBD]
 467 OpenBSD 3.2             2002-11-01 [OBD]
 468 FreeBSD 5.0             2003-01-17 [FBD]
 469                                 FreeBSD 5.0 is a separate branch off of
 470                                 -current, similar to 3.0.
 471 FreeBSD 4.8             2003-04-03 [FBD]
 472 NetBSD 1.6.1            2003-04-21 [NBD] (patch release)
 473 OpenBSD 3.3             2003-05-01 [OBD]
 474 BSD/OS 5.0              2003-05-?? [WRS]
 475 FreeBSD 5.1             2003-06-09 [FBD]
 476 Mac OS X 10.3           2003-10-24 [APL]
 477 FreeBSD 4.9             2003-10-28 [FBD]
 478 BSD/OS 5.1 ISE          2003-10-?? [WRS] (final version)
 479 OpenBSD 3.4             2003-11-01 [OBD]
 480 FreeBSD 5.2             2004-01-12 [FBD]
 481 FreeBSD 5.2.1           2004-02-22 [FBD] (patch release)
 482 NetBSD 1.6.2            2004-03-01 [NBD] (patch release)
 483 OpenBSD 3.5             2004-04-01 [OBD]
 484 FreeBSD 4.10            2004-05-27 [FBD]
 485 DragonFly 1.0           2004-07-12 [DFB]
 486 OpenBSD 3.6             2004-10-29 [OBD]
 487 FreeBSD 5.3             2004-11-06 [FBD]
 488 NetBSD 2.0              2004-12-09 [NBD]
 489 FreeBSD 4.11            2005-01-25 [FBD]
 490 DragonFly 1.2.0         2005-04-08 [DFB]
 491 NetBSD 2.0.2            2005-04-14 [NBD] (security/critical release)
 492 Mac OS X 10.4           2005-04-29 [APL]
 493 FreeBSD 5.4             2005-05-09 [FBD]
 494 OpenBSD 3.7             2005-05-19 [OBD]
 495 NetBSD 2.0.3            2005-10-31 [NBD] (security/critical release)
 496 OpenBSD 3.8             2005-11-01 [OBD]
 497 FreeBSD 6.0             2005-11-01 [FBD]
 498 NetBSD 2.1              2005-11-02 [NBD]
 499 NetBSD 3.0              2005-12-23 [NBD]
 500 DragonFly 1.4.0         2006-01-08 [DFB]
 501 OpenBSD 3.9             2006-05-01 [OBD]
 502 FreeBSD 6.1             2006-05-08 [FBD]
 503 FreeBSD 5.5             2006-05-25 [FBD]
 504 NetBSD 3.0.1            2006-07-24 [NBD] (security/critical release)
 505 DragonFly 1.6.0         2006-07-24 [DFB]
 506 OpenBSD 4.0             2006-11-01 [OBD]
 507 NetBSD 3.0.2            2006-11-04 [NBD] (security/critical release)
 508 NetBSD 3.1              2006-11-04 [NBD]
 509 FreeBSD 6.2             2007-01-15 [FBD]
 510 DragonFly 1.8.0         2007-01-30 [DFB]
 511 OpenBSD 4.1             2007-05-01 [OBD]
 512 DragonFly 1.10.0        2007-08-06 [DFB]
 513 Mac OS X 10.5           2007-10-26 [APL]
 514 OpenBSD 4.2             2007-11-01 [OBD]
 515 NetBSD 4.0              2007-12-19 [NBD]
 516 FreeBSD 6.3             2008-01-18 [FBD]
 517 DragonFly 1.12.0        2008-02-26 [DFB]
 518 FreeBSD 7.0             2008-02-27 [FBD]
 519 OpenBSD 4.3             2008-05-01 [OBD]
 520 DragonFly 2.0.0         2008-07-21 [DFB]
 521 OpenBSD 4.4             2008-11-01 [OBD]
 522 FreeBSD 6.4             2008-11-28 [FBD]
 523 FreeBSD 7.1             2009-01-04 [FBD]
 524 DragonFly 2.2.0         2009-02-17 [DFB]
 525 NetBSD 5.0              2009-04-29 [NBD]
 526 OpenBSD 4.5             2009-05-01 [OBD]
 527 FreeBSD 7.2             2009-05-04 [FBD]
 528 Mac OS X 10.6           2009-06-08 [APL]
 529 DragonFly 2.4.0         2009-09-16 [DFB]
 530 OpenBSD 4.6             2009-10-18 [OBD]
 531 FreeBSD 8.0             2009-11-26 [FBD]
 532 FreeBSD 7.3             2010-03-23 [FBD]
 533 DragonFly 2.6.0         2010-03-28 [DFB]
 534 OpenBSD 4.7             2010-05-19 [OBD]
 535 FreeBSD 8.1             2010-07-24 [FBD]
 536 DragonFly 2.8.2         2010-10-30 [DFB]
 537 OpenBSD 4.8             2010-11-01 [OBD]
 538 NetBSD 5.1              2010-11-19 [NBD]
 539 FreeBSD 7.4             2011-02-24 [FBD]
 540 FreeBSD 8.2             2011-02-24 [FBD]
 541 DragonFly 2.10.1        2011-04-26 [DFB]
 542 OpenBSD 4.9             2011-05-01 [OBD]
 543 Mac OS X 10.7           2011-07-20 [APL]
 544 OpenBSD 5.0             2011-11-01 [OBD]
 545 FreeBSD 9.0             2012-01-12 [FBD]
 546 DragonFly 3.0.1         2012-02-21 [DFB]
 547
 548 Bibliography
 549 ------------------------
 550
 551 Leffler, Samuel J., Marshall Kirk McKusick, Michael J Karels and John
 552 Quarterman. The Design and Implementation of the 4.3BSD UNIX Operating
 553 System. Reading, Mass. Addison-Wesley, 1989. ISBN 0-201-06196-1
 554
 555 Salus, Peter H. A quarter century of UNIX. Addison-Wesley Publishing
 556 Company, Inc., 1994. ISBN 0-201-54777-5
 557
 558 McKusick, Marshall Kirk, Keith Bostic, Michael J Karels, and John
 559 Quarterman. The Design and Implementation of the 4.4BSD Operating
 560 System. Reading, Mass. Addison-Wesley, 1996. ISBN 0-201-54979-4
 561
 562 McKusick, Marshall Kirk, George Neville-Neil. The Design and
 563 Implementation of the FreeBSD Operating System.
 564 Addison-Wesley Professional, Published: Aug 2, 2004. ISBN 0-201-70245-2
 565
 566 Doug McIlroy. Research Unix Reader.
 567
 568 Michael G. Brown. The Role of BSD in the Development of Unix.
 569 Presented to the Tasmanian Unix Special Interest Group of the
 570 Australian Computer Society, Hobart, August 1993.
 571
 572 Peter H. Salus. Unix at 25. Byte Magazine, October 1994.
 573 URL: http://www.byte.com/art/9410/sec8/art3.htm
 574
 575 Andreas Klemm, Lars Köller. If you're going to San Francisco ...
 576 Die freien BSD-Varianten von Unix. c't April 1997, page 368ff.
 577
 578 BSD Release Announcements collection.
 579 URL: http://www.FreeBSD.org/releases/
 580
 581 BSD Hypertext Man Pages
 582 URL: http://www.FreeBSD.org/cgi/man.cgi
 583
 584 UNIX history graphing project
 585 URL: http://minnie.tuhs.org/Unix_History/index.html
 586
 587 UNIX history
 588 URL: http://www.levenez.com/unix/
 589
 590 James Howard: The BSD Family Tree
 591 URL: http://ezine.daemonnews.org/200104/bsd_family.html
 592 ("what are the differences between FreeBSD, NetBSD, and OpenBSD?")
 593
 594
 595 Acknowledgments
 596 ---------------
 597
 598 Josh Gilliam for suggestions, bug fixes, and finding very old
 599 original BSD announcements from Usenet or tapes.
 600
 601 Steven M. Schultz for providing 2.8BSD, 2.10BSD, 2.11BSD manual pages.
 602
 603 --
 604 Copyright (c) 1997-2012 Wolfram Schneider <wosch@FreeBSD.ORG>
 605 URL: http://cvsweb.freebsd.org/src/share/misc/bsd-family-tree
 606
 607 $FreeBSD: src/share/misc/bsd-family-tree,v 1.151 2012/02/22 17:52:53 maxim Exp $