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