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  |     |       |      |      | NetBSD          |                DragonFly 2.0.0
 225  |     |    FreeBSD   |      |  4.0.1      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  |              |     |      | |   NetBSD      |                DragonFly 2.4.0
 235  |              |     |      | |    5.0.1  OpenBSD 4.6                 |
 236  |              |     |      | |       |       |                       |
 237  *--FreeBSD     |     |      | |       |       |                       |
 238  |    8.0       |     |      | |       |       |                       |
 239  |     |     FreeBSD  |      | |   NetBSD      |                       |
 240  |     |       7.3    |      | |    5.0.2      |                DragonFly 2.6.0
 241  |     |        |     |      | |           OpenBSD 4.7                 |
 242  |  FreeBSD     |     |      | |               |                       |
 243  |    8.1       |     |      | |               |                       |
 244  |     |        |     |      | |               |                DragonFly 2.8.2
 245  |     |        |     |      | |           OpenBSD 4.8                 |
 246  |     |        |     |      | *--NetBSD       |                       |
 247  |  FreeBSD  FreeBSD  |      | |    5.1        |                       |
 248  |    8.2      7.4    |      | |      |        |               DragonFly 2.10.1
 249  |     |              |      | |      |    OpenBSD 4.9                 |
 250  |     `-----.     Mac OS X  | |      |        |                       |
 251  |            \      10.7    | |      |        |                       |
 252  |             |      |      | |      |    OpenBSD 5.0                 |
 253  *--FreeBSD    |      |      | |      |        |                       |
 254  |    9.0      |      |      | |   NetBSD      |               DragonFly 3.0.1
 255  |     |    FreeBSD   |      | |    5.1.2      |                       |
 256  |     |      8.3     |      | |      |        |                       |
 257  |     |       |      |      | |   NetBSD      |                       |
 258  |     |       |      |      | |    5.1.3      |                       |
 259  |     |       |      |      | |           OpenBSD 5.1                 |
 260  |     |       |   Mac OS X  | `----.          |                       |
 261  |     |       |     10.8    |       \         |                       |
 262  |     |       |      |   NetBSD 6.0  |        |                       |
 263  |     |       |      |      | | |    |    OpenBSD 5.2         DragonFly 3.2.1
 264  |  FreeBSD    |      |      | | | NetBSD      |                       |
 265  |    9.1      |      |      | | |   5.2       |                       |
 266  |     |       |      |      | | |    |        |                       |
 267  |     |       |      |      | | | NetBSD      |                       |
 268  |     |       |      |      | | |  5.2.1      |                       |
 269  |     |       |      |      | | |             |                       |
 270  |     |       |      |      | |  \            |                       |
 271  |     |       |      |      | |   NetBSD      |                       |
 272  |     |       |      |      | |    6.0.1      |                       |
 273  |     |       |      |      | |      |        |                       |
 274  |     |       |      |      | |   NetBSD      |                       |
 275  |     |       |      |      | |    6.0.2      |                       |
 276  |     |       |      |      | |      |   OpenBSD 5.3          DragonFly 3.4.1
 277  |     |       |      |      | |   NetBSD      |                       |
 278  |     |       |      |      | |    6.0.3      |                       |
 279  |     |       |      |      | |               |                       |
 280  |     |       |      |      | |`-NetBSD 6.1   |                       |
 281  |     |    FreeBSD   |      |       |         |                       |
 282  |     |      8.4     |      |    NetBSD 6.1.1 |                       |
 283  |     |              |      |       |         |                       |
 284  |  FreeBSD           |      |    NetBSD 6.1.2 |                       |
 285  |    9.2          Mac OS X  |                 |                       |
 286  |                   10.9    |            OpenBSD 5.4                  |
 287  |                    |      |                 |                       |
 288  |                    |      |                 |                       |
 289  |                    |      |                 |                       |
 290  |                    |      |                 |                       |
 291 FreeBSD 10 -current   |  NetBSD -current  OpenBSD -current             |
 292  |                    |      |                 |                       |
 293  v                    v      v                 v                       v
 294
 295 Time
 296 ----------------
 297
 298 Time tolerance +/- 6 months, depending on which book/article you read; if it
 299 was the announcement in Usenet or if it was available as tape.
 300
 301 [44B] McKusick, Marshall Kirk, Keith Bostic, Michael J Karels,
 302         and John Quarterman. The Design and Implementation of
 303         the 4.4BSD Operating System.
 304 [APL] Apple website [http://www.apple.com/macosx/]
 305 [BSDI] Berkeley Software Design, Inc.
 306 [DFB] DragonFlyBSD Project, The.
 307 [DOC] README, COPYRIGHT on tape.
 308 [FBD] FreeBSD Project, The.
 309 [KB]  Keith Bostic. BSD2.10 available from Usenix. comp.unix.sources,
 310         Volume 11, Info 4, April, 1987.
 311 [KKK] Mike Karels, Kirk McKusick, and Keith Bostic. tahoe announcement.
 312         comp.bugs.4bsd.ucb-fixes, June 15, 1988.
 313 [KSJ] Michael J. Karels, Carl F. Smith, and William F. Jolitz.
 314         Changes in the Kernel in 2.9BSD. Second Berkeley Software
 315         Distribution UNIX Version 2.9, July, 1983.
 316 [NBD] NetBSD Project, The.
 317 [OBD] OpenBSD Project, The.
 318 [QCU] Salus, Peter H. A quarter century of UNIX.
 319 [SMS] Steven M. Schultz. 2.11BSD, UNIX for the PDP-11.
 320 [TUHS] The Unix Historical Society.  http://minnie.tuhs.org/Unix_History/.
 321 [USE] Usenet announcement.
 322 [WRS] Wind River Systems, Inc.
 323 [dmr] Dennis Ritchie, via E-Mail
 324
 325 Multics                 1965
 326 UNIX                    Summer 1969
 327                                 DEC PDP-7
 328 First   Edition         1971-11-03 [QCU]
 329                                 DEC PDP-11/20, Assembler
 330 Second  Edition         1972-06-12 [QCU]
 331                                 10 UNIX installations
 332 Third   Edition         1973-02-xx [QCU]
 333                                 Pipes, 16 installations
 334 Fourth  Edition         1973-11-xx [QCU]
 335                                 rewriting in C effected,
 336                                 above 30 installations
 337 Fifth   Edition         1974-06-xx [QCU]
 338                                 above 50 installations
 339 Sixth   Edition         1975-05-xx [QCU]
 340                                 port to DEC Vax
 341 Seventh Edition         1979-01-xx [QCU]
 342                                 first portable UNIX
 343 Eighth  Edition         1985-02-xx [QCU]
 344                                 VAX 11/750, VAX 11/780 [dmr]
 345                                 descended from 4.1c BSD [dmr]
 346                                 descended from 4.1 BSD [44B]
 347                         scooping-out and replacement of the character-device
 348                         and networking part by the streams mechanism
 349
 350 Ninth   Edition         1986-09-xx [QCU]
 351 Tenth   Edition         1989-10-xx [QCU]
 352
 353 1BSD                    late 1977
 354                         1978-03-09 [QCU]
 355                                 PDP-11, Pascal, ex(1)
 356                                 30 free copies of 1BSD sent out
 357                                 35 tapes sold for 50 USD [QCU]
 358 2BSD                    mid 1978 [QCU] 1979-05-10 [TUHS]
 359                                 75 2BSD tapes shipped
 360 2.79BSD                 1980-04-xx [TUHS]
 361 2.8BSD                  1981-07-xx [KSJ]
 362
 363 2.8.1BSD                1982-01-xx [QCU]
 364                                 set of performance improvements
 365 2.9BSD                  1983-07-xx [KSJ]
 366 2.9.1BSD                1983-11-xx [TUHS]
 367 2.9BSD-Seismo           1985-08-xx [SMS]
 368 2.10BSD                 1987-04-xx [KKK]
 369 2.10.1BSD               1989-01-xx [SMS]
 370 2.11BSD                 1992-02-xx [SMS]
 371 2.11BSD rev #430        1999-12-13 [SMS]
 372
 373 32V                     1978-1[01]-xx [QCU]
 374 3BSD                    late 1979 [QCU] March 1980 [TUHS]
 375                                 virtual memory, page replacement,
 376                                 demand paging
 377 4.0BSD                  1980-10-xx
 378 4.1BSD                  1981-07-08 [DOC]
 379 4.1aBSD                 1982-04-xx
 380                                 alpha release, 100 sites, networking [44B]
 381 4.1bBSD                         internal release, fast filesystem [44B]
 382 4.1cBSD                 late 1982
 383                                 beta release, IPC [44B]
 384 4.2BSD                  1983-09-xx [QCU]
 385                         1983-08-03 [DOC]
 386 4.3BSD                  1986-06-xx [QCU]
 387                         1986-04-05 [KB], [DOC]
 388 4.3BSD Tahoe            1988-06-15 [QCU], [DOC]
 389 4.3BSD NET/1            1988-11-xx [QCU]
 390                         1989-01-01 [DOC]
 391 4.3BSD Reno             1990-06-29 [QCU], [DOC]
 392 4.3BSD NET/2            1991-06-28 [QCU], [DOC]
 393
 394 BSD/386 ALPHA           1991-12-xx [BSDI]
 395                                 first code released to people outside BSDI
 396 386BSD 0.0              1992-02-xx [DOC]
 397 BSD/386 0.3.1           1992-04-xx [BSDI] first ext. beta; B customers
 398 BSD/386 0.3.3           1992-06-xx [BSDI] first CDROM version
 399 386BSD 0.1              1992-07-28 [DOC]
 400 4.4BSD Alpha            1992-07-07
 401 BSD/386 0.9.3           1992-10-xx [BSDI]
 402                                 first external gamma; G customers
 403 BSD/386 0.9.4           1992-12-xx [BSDI]
 404                                 would have been 1.0 except for request
 405                                 for preliminary injunction
 406 BSD/386 1.0             1993-03-xx [BSDI]
 407                                 injunction denied; first official release
 408 NetBSD 0.8              1993-04-20 [NBD]
 409 4.4BSD                  1993-06-01 [USE]
 410 NetBSD 0.9              1993-08-23 [NBD]
 411 FreeBSD 1.0             1993-11-01 [FBD]
 412 FreeBSD 1.0.2           1993-11-14 [FBD]
 413                                 supersedes 1.0 13 days after release.
 414 BSD/386 1.1             1994-02-xx [BSDI]
 415 4.4BSD Lite             1994-03-01 [USE]
 416 FreeBSD 1.1             1994-05-07 [FBD]
 417 FreeBSD 1.1.5           1994-06-30 [FBD]
 418 FreeBSD 1.1.5.1         1994-07-05 [FBD]
 419                                 supersedes 1.1.5 5 days after release.
 420 NetBSD 1.0              1994-10-26 [NBD]
 421 386BSD 1.0              1994-11-12 [USE]
 422 FreeBSD 2.0             1994-11-23 [FBD]
 423 BSD/OS 2.0              1995-01-xx [BSDI] 4.4 lite based
 424 FreeBSD 2.0.5           1995-06-10 [FBD]
 425 BSD/OS 2.0.1            1995-06-xx [BSDI]
 426 4.4BSD Lite Release 2   1995-06-xx [44B]
 427                                 the true final distribution from the CSRG
 428 FreeBSD 2.1.0           1995-11-19 [FBD]
 429 NetBSD 1.1              1995-11-26 [NBD]
 430 BSD/OS 2.1              1996-01-xx [BSDI]
 431 FreeBSD 2.1.5           1996-07-14 [FBD]
 432 NetBSD 1.2              1996-10-04 [NBD]
 433 OpenBSD 2.0             1996-10-18 [OBD]
 434 FreeBSD 2.1.6           1996-11-16 [FBD]
 435 FreeBSD 2.1.6.1         1996-11-25 [FBD] (sendmail security release)
 436 Rhapsody                1997-xx-xx
 437 FreeBSD 2.1.7           1997-02-20 [FBD]
 438 BSD/OS 3.0              1997-02-xx [BSDI] 4.4 lite2 based
 439 FreeBSD 2.2.0           1997-03-16 [FBD]
 440 FreeBSD 2.2.1           1997-03-25 [FBD]
 441 FreeBSD 2.2.2           1997-05-16 [FBD]
 442 NetBSD 1.2.1            1997-05-20 [NBD] (patch release)
 443 OpenBSD 2.1             1997-06-01 [OBD]
 444 FreeBSD 2.2.5           1997-10-22 [FBD]
 445 OpenBSD 2.2             1997-12-01 [OBD]
 446 NetBSD 1.3              1998-01-04 [NBD]
 447 FreeBSD 2.2.6           1998-03-25 [FBD]
 448 NetBSD 1.3.1            1998-03-09 [NBD] (patch release)
 449 BSD/OS 3.1              1998-03-xx [BSDI]
 450 OpenBSD 2.3             1998-05-19 [OBD]
 451 NetBSD 1.3.2            1998-05-29 [NBD] (patch release)
 452 FreeBSD 2.2.7           1998-07-22 [FBD]
 453 BSD/OS 4.0              1998-08-xx [BSDI]
 454                                 2-lock MP support, ELF executables
 455 FreeBSD 3.0             1998-10-16 [FBD]
 456                                 FreeBSD-3.0 is a snapshot from -current,
 457                                 while 3.1 and 3.2 are from 3.x-stable which
 458                                 was branched quite some time after 3.0-release
 459 FreeBSD 2.2.8           1998-11-29 [FBD]
 460 OpenBSD 2.4             1998-12-01 [OBD]
 461 NetBSD 1.3.3            1998-12-23 [NBD] (patch release)
 462 FreeBSD 3.1             1999-02-15 [FBD]
 463 BSD/OS 4.0.1            1999-03-xx [BSDI]
 464 NetBSD 1.4              1999-05-12 [NBD]
 465 FreeBSD 3.2             1999-05-17 [FBD]
 466 OpenBSD 2.5             1999-05-19 [OBD]
 467 NetBSD 1.4.1            1999-08-26 [NBD] (patch release)
 468 FreeBSD 3.3             1999-09-17 [FBD]
 469 OpenBSD 2.6             1999-12-01 [OBD]
 470 FreeBSD 3.4             1999-12-20 [FBD]
 471 BSD/OS 4.1              1999-12-xx [BSDI]
 472 FreeBSD 4.0             2000-03-13 [FBD]
 473 NetBSD 1.4.2            2000-03-19 [NBD] (patch release)
 474 OpenBSD 2.7             2000-06-15 [OBD]
 475 FreeBSD 3.5             2000-06-24 [FBD]
 476 FreeBSD 4.1             2000-07-27 [FBD]
 477 FreeBSD 3.5.1           2000-07-28 [FBD]
 478 FreeBSD 4.1.1           2000-09-25 [FBD] (a network-only patch release)
 479 FreeBSD 4.2             2000-11-21 [FBD]
 480 NetBSD 1.4.3            2000-11-25 [NBD] (patch release)
 481 BSD/OS 4.2              2000-11-29 [BSDI]
 482 OpenBSD 2.8             2000-12-01 [OBD]
 483 NetBSD 1.5              2000-12-06 [NBD]
 484 Mac OS X 10.0           2001-03-24 [APL]
 485 FreeBSD 4.3             2001-04-20 [FBD]
 486 OpenBSD 2.9             2001-06-01 [OBD]
 487 NetBSD 1.5.1            2001-07-11 [NBD] (patch release)
 488 NetBSD 1.5.2            2001-09-13 [NBD] (patch release)
 489 FreeBSD 4.4             2001-09-18 [FBD]
 490 Mac OS X 10.1           2001-09-29 [APL]
 491 OpenBSD 3.0             2001-12-01 [OBD]
 492 FreeBSD 4.5             2002-01-29 [FBD]
 493 BSD/OS 4.3              2002-03-14 [WRS]
 494 OpenBSD 3.1             2002-05-19 [OBD]
 495 FreeBSD 4.6             2002-06-15 [FBD]
 496 NetBSD 1.5.3            2002-07-22 [NBD] (patch release)
 497 FreeBSD 4.6.2           2002-08-15 [FBD] (patch release)
 498 Mac OS X 10.2           2002-08-23 [APL]
 499 NetBSD 1.6              2002-09-14 [NBD]
 500 FreeBSD 4.7             2002-10-08 [FBD]
 501 OpenBSD 3.2             2002-11-01 [OBD]
 502 FreeBSD 5.0             2003-01-17 [FBD]
 503                                 FreeBSD 5.0 is a separate branch off of
 504                                 -current, similar to 3.0.
 505 FreeBSD 4.8             2003-04-03 [FBD]
 506 NetBSD 1.6.1            2003-04-21 [NBD] (patch release)
 507 OpenBSD 3.3             2003-05-01 [OBD]
 508 BSD/OS 5.0              2003-05-?? [WRS]
 509 FreeBSD 5.1             2003-06-09 [FBD]
 510 Mac OS X 10.3           2003-10-24 [APL]
 511 FreeBSD 4.9             2003-10-28 [FBD]
 512 BSD/OS 5.1 ISE          2003-10-?? [WRS] (final version)
 513 OpenBSD 3.4             2003-11-01 [OBD]
 514 FreeBSD 5.2             2004-01-12 [FBD]
 515 FreeBSD 5.2.1           2004-02-22 [FBD] (patch release)
 516 NetBSD 1.6.2            2004-03-01 [NBD] (patch release)
 517 OpenBSD 3.5             2004-04-01 [OBD]
 518 FreeBSD 4.10            2004-05-27 [FBD]
 519 DragonFly 1.0           2004-07-12 [DFB]
 520 OpenBSD 3.6             2004-10-29 [OBD]
 521 FreeBSD 5.3             2004-11-06 [FBD]
 522 NetBSD 2.0              2004-12-09 [NBD]
 523 FreeBSD 4.11            2005-01-25 [FBD]
 524 DragonFly 1.2.0         2005-04-08 [DFB]
 525 NetBSD 2.0.2            2005-04-14 [NBD] (security/critical release)
 526 Mac OS X 10.4           2005-04-29 [APL]
 527 FreeBSD 5.4             2005-05-09 [FBD]
 528 OpenBSD 3.7             2005-05-19 [OBD]
 529 NetBSD 2.0.3            2005-10-31 [NBD] (security/critical release)
 530 OpenBSD 3.8             2005-11-01 [OBD]
 531 FreeBSD 6.0             2005-11-01 [FBD]
 532 NetBSD 2.1              2005-11-02 [NBD]
 533 NetBSD 3.0              2005-12-23 [NBD]
 534 DragonFly 1.4.0         2006-01-08 [DFB]
 535 OpenBSD 3.9             2006-05-01 [OBD]
 536 FreeBSD 6.1             2006-05-08 [FBD]
 537 FreeBSD 5.5             2006-05-25 [FBD]
 538 NetBSD 3.0.1            2006-07-24 [NBD] (security/critical release)
 539 DragonFly 1.6.0         2006-07-24 [DFB]
 540 OpenBSD 4.0             2006-11-01 [OBD]
 541 NetBSD 3.0.2            2006-11-04 [NBD] (security/critical release)
 542 NetBSD 3.1              2006-11-04 [NBD]
 543 FreeBSD 6.2             2007-01-15 [FBD]
 544 DragonFly 1.8.0         2007-01-30 [DFB]
 545 OpenBSD 4.1             2007-05-01 [OBD]
 546 DragonFly 1.10.0        2007-08-06 [DFB]
 547 Mac OS X 10.5           2007-10-26 [APL]
 548 OpenBSD 4.2             2007-11-01 [OBD]
 549 NetBSD 4.0              2007-12-19 [NBD]
 550 FreeBSD 6.3             2008-01-18 [FBD]
 551 DragonFly 1.12.0        2008-02-26 [DFB]
 552 FreeBSD 7.0             2008-02-27 [FBD]
 553 OpenBSD 4.3             2008-05-01 [OBD]
 554 DragonFly 2.0.0         2008-07-21 [DFB]
 555 OpenBSD 4.4             2008-11-01 [OBD]
 556 FreeBSD 6.4             2008-11-28 [FBD]
 557 FreeBSD 7.1             2009-01-04 [FBD]
 558 DragonFly 2.2.0         2009-02-17 [DFB]
 559 NetBSD 5.0              2009-04-29 [NBD]
 560 OpenBSD 4.5             2009-05-01 [OBD]
 561 FreeBSD 7.2             2009-05-04 [FBD]
 562 Mac OS X 10.6           2009-06-08 [APL]
 563 NetBSD 5.0.1            2009-08-02 [NBD] (security/critical release)
 564 DragonFly 2.4.0         2009-09-16 [DFB]
 565 OpenBSD 4.6             2009-10-18 [OBD]
 566 FreeBSD 8.0             2009-11-26 [FBD]
 567 NetBSD 5.0.2            2010-02-12 [NBD] (security/critical release)
 568 FreeBSD 7.3             2010-03-23 [FBD]
 569 DragonFly 2.6.0         2010-03-28 [DFB]
 570 OpenBSD 4.7             2010-05-19 [OBD]
 571 FreeBSD 8.1             2010-07-24 [FBD]
 572 DragonFly 2.8.2         2010-10-30 [DFB]
 573 OpenBSD 4.8             2010-11-01 [OBD]
 574 NetBSD 5.1              2010-11-19 [NBD]
 575 FreeBSD 7.4             2011-02-24 [FBD]
 576 FreeBSD 8.2             2011-02-24 [FBD]
 577 DragonFly 2.10.1        2011-04-26 [DFB]
 578 OpenBSD 4.9             2011-05-01 [OBD]
 579 Mac OS X 10.7           2011-07-20 [APL]
 580 OpenBSD 5.0             2011-11-01 [OBD]
 581 FreeBSD 9.0             2012-01-12 [FBD]
 582 NetBSD 5.1.2            2012-02-02 [NBD] (security/critical release)
 583 DragonFly 3.0.1         2012-02-21 [DFB]
 584 FreeBSD 8.3             2012-04-18 [FBD]
 585 OpenBSD 5.1             2012-05-01 [OBD]
 586 Mac OS X 10.8           2012-07-25 [APL]
 587 NetBSD 6.0              2012-10-17 [NBD]
 588 OpenBSD 5.2             2012-11-01 [OBD]
 589 DragonFly 3.2.1         2012-11-02 [DFB]
 590 NetBSD 5.2              2012-12-03 [NBD]
 591 NetBSD 6.0.1            2012-12-26 [NBD] (security/critical release)
 592 FreeBSD 9.1             2012-12-30 [FBD]
 593 DragonFly 3.4.1         2013-04-29 [DFB]
 594 OpenBSD 5.3             2013-05-01 [OBD]
 595 NetBSD 6.0.2            2013-05-18 [NBD] (security/critical release)
 596 NetBSD 6.1              2013-05-18 [NBD]
 597 FreeBSD 8.4             2013-06-07 [FBD]
 598 NetBSD 6.1.1            2013-08-22 [NBD]
 599 NetBSD 5.1.3            2013-09-29 [NBD]
 600 NetBSD 5.2.1            2013-09-29 [NBD]
 601 FreeBSD 9.2             2013-09-30 [FBD]
 602 NetBSD 6.0.3            2013-09-30 [NBD]
 603 NetBSD 6.1.2            2013-09-30 [NBD]
 604 Mac OS X 10.9           2013-10-22 [APL]
 605 OpenBSD 5.4             2013-11-01 [OBD]
 606
 607 Bibliography
 608 ------------------------
 609
 610 Leffler, Samuel J., Marshall Kirk McKusick, Michael J Karels and John
 611 Quarterman. The Design and Implementation of the 4.3BSD UNIX Operating
 612 System. Reading, Mass. Addison-Wesley, 1989. ISBN 0-201-06196-1
 613
 614 Salus, Peter H. A quarter century of UNIX. Addison-Wesley Publishing
 615 Company, Inc., 1994. ISBN 0-201-54777-5
 616
 617 McKusick, Marshall Kirk, Keith Bostic, Michael J Karels, and John
 618 Quarterman. The Design and Implementation of the 4.4BSD Operating
 619 System. Reading, Mass. Addison-Wesley, 1996. ISBN 0-201-54979-4
 620
 621 McKusick, Marshall Kirk, George Neville-Neil. The Design and
 622 Implementation of the FreeBSD Operating System.
 623 Addison-Wesley Professional, Published: Aug 2, 2004. ISBN 0-201-70245-2
 624
 625 Doug McIlroy. Research Unix Reader.
 626
 627 Michael G. Brown. The Role of BSD in the Development of Unix.
 628 Presented to the Tasmanian Unix Special Interest Group of the
 629 Australian Computer Society, Hobart, August 1993.
 630
 631 Peter H. Salus. Unix at 25. Byte Magazine, October 1994.
 632 URL: http://www.byte.com/art/9410/sec8/art3.htm
 633
 634 Andreas Klemm, Lars Köller. If you're going to San Francisco ...
 635 Die freien BSD-Varianten von Unix. c't April 1997, page 368ff.
 636
 637 BSD Release Announcements collection.
 638 URL: http://www.FreeBSD.org/releases/
 639
 640 BSD Hypertext Man Pages
 641 URL: http://www.FreeBSD.org/cgi/man.cgi
 642
 643 UNIX history graphing project
 644 URL: http://minnie.tuhs.org/Unix_History/index.html
 645
 646 UNIX history
 647 URL: http://www.levenez.com/unix/
 648
 649 James Howard: The BSD Family Tree
 650 URL: http://ezine.daemonnews.org/200104/bsd_family.html
 651 ("what are the differences between FreeBSD, NetBSD, and OpenBSD?")
 652
 653
 654 Acknowledgments
 655 ---------------
 656
 657 Josh Gilliam for suggestions, bug fixes, and finding very old
 658 original BSD announcements from Usenet or tapes.
 659
 660 Steven M. Schultz for providing 2.8BSD, 2.10BSD, 2.11BSD manual pages.
 661
 662 --
 663 Copyright (c) 1997-2012 Wolfram Schneider <wosch@FreeBSD.ORG>
 664 URL: http://svnweb.freebsd.org/base/head/share/misc/bsd-family-tree
 665
 666 $FreeBSD: head/share/misc/bsd-family-tree 257516 2013-11-01 18:55:56Z pluknet $