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  |     FreeBSD 2.2.8 | |     |    |            |             |
 114  |         |         | |     |    |            |             |
 115  |         v         | |     |    |        OpenBSD 2.4       |
 116  |     FreeBSD 2.2.9 | |     |    |            |             |
 117  |                   | |     |    |            |             |
 118 FreeBSD 3.0 <--------* |     |    v            |             |
 119  |                     |     | NetBSD 1.3.3    |             |
 120  *---FreeBSD 3.1       |     |                 |             |
 121  |       |             |     |                 |           BSD/OS 4.0.1
 122  |   FreeBSD 3.2----*  |  NetBSD 1.4       OpenBSD 2.5       |
 123  |       |          |  |  |  |    |            |             |
 124  |       |          |  |  |  |    |            |             |
 125  |       |          |  |  |  |    |            |             |
 126  |   FreeBSD 3.3    |  |  |  | NetBSD 1.4.1    |             |
 127  |       |          |  |  |  |    |        OpenBSD 2.6       |
 128  |   FreeBSD 3.4    |  |  |  |    |            |             |
 129  |           |      |  |  |  |    |            |           BSD/OS 4.1
 130 FreeBSD 4.0  |      |  |  |  | NetBSD 1.4.2    |             |
 131  |           |      |  |  |  |    |            |             |
 132  |           |      |  |  |  |    |            |             |
 133  |   FreeBSD 3.5    |  |  |  |    |        OpenBSD 2.7       |
 134  |           |      |  |  |  |    |            |             |
 135  |   FreeBSD 3.5.1  |  |  |  |    |            |             |
 136  |                  |  |  |  |    |            |             |
 137  *---FreeBSD 4.1    |  |  |  |    |            |             |
 138  |      |           |  | (?) |    |            |             |
 139  |   FreeBSD 4.1.1  |  |  /  |    |            |             |
 140  |      |           |  | /   |    |            |             |
 141  |   FreeBSD 4.2   Darwin/   | NetBSD 1.4.3    |             |
 142  |      |         Mac OS X   |             OpenBSD 2.8     BSD/OS 4.2
 143  |      |             |      |                 |             |
 144  |      |             |      |                 |             |
 145  |      |           10.0  NetBSD 1.5           |             |
 146  |   FreeBSD 4.3      |      |    |            |             |
 147  |      |             |      |    |        OpenBSD 2.9       |
 148  |      |             |      | NetBSD 1.5.1    |             |
 149  |      |             |      |    |            |             |
 150  |   FreeBSD 4.4-.    |      | NetBSD 1.5.2    |             |
 151  |      |        | Mac OS X  |    |            |             |
 152  |      |        |   10.1    |    |        OpenBSD 3.0       |
 153  |   FreeBSD 4.5 |    |      |    |            |             |
 154  |      |         \   |      |    |            |           BSD/OS 4.3
 155  |   FreeBSD 4.6   \  |      |    |        OpenBSD 3.1       |
 156  |      |           \ |      | NetBSD 1.5.3    |             |
 157  |   FreeBSD 4.6.2 Mac OS X  |                 |             |
 158  |      |            10.2    |                 |             |
 159  |   FreeBSD 4.7      |      |                 |             |
 160  |      |             |   NetBSD 1.6       OpenBSD 3.2       |
 161  |   FreeBSD 4.8      |      |    |            |             |
 162  |      |             |      | NetBSD 1.6.1    |             |
 163  |      |--------.    |      |    |        OpenBSD 3.3     BSD/OS 5.0
 164  |      |         \   |      |    |            |             |
 165  |   FreeBSD 4.9   |  |      |    |        OpenBSD 3.4     BSD/OS 5.1 ISE
 166  |      |          |  |      |    |            |
 167  |      |          |  |      | NetBSD 1.6.2    |
 168  |      |          |  |      |    |            |
 169  |      |          |  |      |    |        OpenBSD 3.5
 170  |      |          |  |      |    v            |
 171  |   FreeBSD 4.10  |  |      |                 |
 172  |      |          |  |      |                 |
 173  |   FreeBSD 4.11  |  |      |                 |
 174  |                 |  |      |                 |
 175  |                  `-|------|-----------------|---------------------.
 176  |                    |      |                 |                      \
 177 FreeBSD 5.0           |      |                 |                       |
 178  |                    |      |                 |                       |
 179 FreeBSD 5.1           |      |                 |                 DragonFly 1.0
 180  |          \         |      |                 |                       |
 181  |           ----- Mac OS X  |                 |                       |
 182  |                   10.3    |                 |                       |
 183 FreeBSD 5.2           |      |                 |                       |
 184  |      |             |      |                 |                       |
 185  |   FreeBSD 5.2.1    |      |                 |                       |
 186  |                    |      |                 |                       |
 187  *-------FreeBSD 5.3  |      |                 |                       |
 188  |           |        |      |             OpenBSD 3.6                 |
 189  |           |        |   NetBSD 2.0           |                       |
 190  |           |        |      | |  |            |                DragonFly 1.2.0
 191  |           |     Mac OS X  | | NetBSD 2.0.2  |                       |
 192  |           |       10.4    | |  |            |                       |
 193  |       FreeBSD 5.4  |      | |  |            |                       |
 194  |           |        |      | |  |        OpenBSD 3.7                 |
 195  |           |        |      | | NetBSD 2.0.3  |                       |
 196  |           |        |      | |  |            |                       |
 197  *--FreeBSD  |        |      | |  v        OpenBSD 3.8                 |
 198  |    6.0    |        |      | |               |                       |
 199  |     |     |        |      |  \              |                       |
 200  |     |     |        |      | NetBSD 2.1      |                       |
 201  |     |     |        |      |                 |                       |
 202  |     |     |        |   NetBSD 3.0           |                       |
 203  |     |     |        |      | |  |            |                DragonFly 1.4.0
 204  |     |     |        |      | |  |        OpenBSD 3.9                 |
 205  |  FreeBSD  |        |      | |  |            |                       |
 206  |    6.1    |        |      | |  |            |                       |
 207  |     |  FreeBSD 5.5 |      | |  |            |                       |
 208  |     |              |      | | NetBSD 3.0.1  |                DragonFly 1.6.0
 209  |     |              |      | |  |            |                       |
 210  |     |              |      | |  |        OpenBSD 4.0                 |
 211  |     |              |      | | NetBSD 3.0.2  |                       |
 212  |     |              |      | NetBSD 3.1      |                       |
 213  | FreeBSD 6.2        |      |                 |                       |
 214  |     |              |      |                 |                DragonFly 1.8.0
 215  |     |              |      |             OpenBSD 4.1                 |
 216  |     |              |      |                 |                DragonFly 1.10.0
 217  |     |           Mac OS X  |                 |                       |
 218  |     |             10.5    |                 |                       |
 219  |     |              |      |             OpenBSD 4.2                 |
 220  |     |              |   NetBSD 4.0           |                       |
 221  | FreeBSD 6.3        |      |    |            |                       |
 222  |            \       |      |    |            |                       |
 223  *--FreeBSD    |      |      |    |            |                DragonFly 1.12.0
 224  |    7.0      |      |      |    |            |                       |
 225  |     |       |      |      |    |        OpenBSD 4.3                 |
 226  |     |       |      |      | NetBSD          |                DragonFly 2.0.0
 227  |     |    FreeBSD   |      |  4.0.1      OpenBSD 4.4                 |
 228  |     |      6.4     |      |                 |                       |
 229  |     |              |      |                 |                       |
 230  |  FreeBSD 7.1       |      |                 |                       |
 231  |     |              |      |                 |                DragonFly 2.2.0
 232  |  FreeBSD 7.2       |   NetBSD 5.0       OpenBSD 4.5                 |
 233  |             \      |      | |    \          |                       |
 234  |              |  Mac OS X  | |     \         |                       |
 235  |              |    10.6    | |      \        |                       |
 236  |              |     |      | |   NetBSD      |                DragonFly 2.4.0
 237  |              |     |      | |    5.0.1  OpenBSD 4.6                 |
 238  |              |     |      | |       |       |                       |
 239  *--FreeBSD     |     |      | |       |       |                       |
 240  |    8.0       |     |      | |       |       |                       |
 241  |     |     FreeBSD  |      | |   NetBSD      |                       |
 242  |     |       7.3    |      | |    5.0.2      |                DragonFly 2.6.0
 243  |     |        |     |      | |           OpenBSD 4.7                 |
 244  |  FreeBSD     |     |      | |               |                       |
 245  |    8.1       |     |      | |               |                       |
 246  |     |        |     |      | |               |                DragonFly 2.8.2
 247  |     |        |     |      | |           OpenBSD 4.8                 |
 248  |     |        |     |      | *--NetBSD       |                       |
 249  |  FreeBSD  FreeBSD  |      | |    5.1        |                       |
 250  |    8.2      7.4    |      | |      |        |               DragonFly 2.10.1
 251  |     |              |      | |      |    OpenBSD 4.9                 |
 252  |     `-----.     Mac OS X  | |      |        |                       |
 253  |            \      10.7    | |      |        |                       |
 254  |             |      |      | |      |    OpenBSD 5.0                 |
 255  *--FreeBSD    |      |      | |      |        |                       |
 256  |    9.0      |      |      | |   NetBSD      |               DragonFly 3.0.1
 257  |     |    FreeBSD   |      | |    5.1.2      |                       |
 258  |     |      8.3     |      | |      |        |                       |
 259  |     |       |      |      | |   NetBSD      |                       |
 260  |     |       |      |      | |    5.1.3      |                       |
 261  |     |       |      |      | |           OpenBSD 5.1                 |
 262  |     |       |   Mac OS X  | `----.          |                       |
 263  |     |       |     10.8    |       \         |                       |
 264  |     |       |      |   NetBSD 6.0  |        |                       |
 265  |     |       |      |      | | |    |    OpenBSD 5.2         DragonFly 3.2.1
 266  |  FreeBSD    |      |      | | | NetBSD      |                       |
 267  |    9.1      |      |      | | |   5.2       |                       |
 268  |     |       |      |      | | |    |        |                       |
 269  |     |       |      |      | | | NetBSD      |                       |
 270  |     |       |      |      | | |  5.2.1      |                       |
 271  |     |       |      |      | | |             |                       |
 272  |     |       |      |      | |  \            |                       |
 273  |     |       |      |      | |   NetBSD      |                       |
 274  |     |       |      |      | |    6.0.1      |                       |
 275  |     |       |      |      | |      |        |                       |
 276  |     |       |      |      | |   NetBSD      |                       |
 277  |     |       |      |      | |    6.0.2      |                       |
 278  |     |       |      |      | |      |   OpenBSD 5.3          DragonFly 3.4.1
 279  |     |       |      |      | |   NetBSD      |                       |
 280  |     |       |      |      | |    6.0.3      |                       |
 281  |     |       |      |      | |      |        |                       |
 282  |     |       |      |      | |   NetBSD      |                       |
 283  |     |       |      |      | |    6.0.4      |                       |
 284  |     |       |      |      | |      |        |                       |
 285  |     |       |      |      | |   NetBSD      |                       |
 286  |     |       |      |      | |    6.0.5      |                       |
 287  |     |       |      |      | |               |                       |
 288  |     |       |      |      | |`-NetBSD 6.1   |                       |
 289  |     |    FreeBSD   |      |       |         |                       |
 290  |     |      8.4     |      |    NetBSD 6.1.1 |                       |
 291  |     |              |      |       |         |                       |
 292  |  FreeBSD           |      |    NetBSD 6.1.2 |                       |
 293  |    9.2          Mac OS X  |       |         |                       |
 294  |     |             10.9    |       |    OpenBSD 5.4                  |
 295  |     `-----.        |      |       |         |               DragonFly 3.6.0
 296  |            \       |      |       |         |                       |
 297  *--FreeBSD    |      |      |    NetBSD 6.1.3 |                       |
 298  |   10.0      |      |      |       |         |                       |
 299  |     |       |      |      |       |         |               DragonFly 3.6.1
 300  |     |       |      |      |       |         |                       |
 301  |     |       |      |      |       |         |                       |
 302  |     |       |      |      |       |         |               DragonFly 3.6.2
 303  |     |       |      |      |    NetBSD 6.1.4 |                       |
 304  |     |       |      |      |       |         |                       |
 305  |     |       |      |      |       |    OpenBSD 5.5                  |
 306  |     |       |      |      |       |         |                       |
 307  |     |       |      |      |       |         |               DragonFly 3.8.0
 308  |     |       |      |      |       |         |                       |
 309  |     |       |      |      |       |         |                       |
 310  |     |       |      |      |       |         |               DragonFly 3.8.1
 311  |     |       |      |      |       |         |                       |
 312  |     |       |      |      |       |         |                       |
 313  |     |       |      |      |       |         |               DragonFly 3.6.3
 314  |     |       |      |      |       |         |                       |
 315  |     |    FreeBSD   |      |       |         |                       |
 316  |     |      9.3     |      |       |         |                       |
 317  |     |              |      |    NetBSD 6.1.5 |               DragonFly 3.8.2
 318  |     |           Mac OS X  |                 |                       |
 319  |     |             10.10   |                 |                       |
 320  |     |              |      |            OpenBSD 5.6                  |
 321  |  FreeBSD           |      |                 |                       |
 322  |   10.1             |      |                 |               DragonFly 4.0.1
 323  |     |              |      |                 |                       |
 324  |     |              |      |                 |               DragonFly 4.0.2
 325  |     |              |      |                 |                       |
 326  |     |              |      |                 |               DragonFly 4.0.3
 327  |     |              |      |                 |                       |
 328  |     |              |      |                 |               DragonFly 4.0.4
 329  |     |              |      |                 |                       |
 330  |     |              |      |                 |               DragonFly 4.0.5
 331  |     |              |      |                 |                       |
 332  |     |              |      |            OpenBSD 5.7                  |
 333  |     |              |      |                 |               DragonFly 4.2.0
 334  |  FreeBSD           |      |                 |                       |
 335  |   10.2             |      |                 |                       |
 336  |     |            OS X  NetBSD 7.0           |                       |
 337  |     |            10.11    |            OpenBSD 5.8                  |
 338  |     |              |      |                 |               DragonFly 4.4.1
 339  |  FreeBSD           |      |            OpenBSD 5.9                  |
 340  |   10.3             |      |                 |                       |
 341  |                    |      |                 |               DragonFly 4.6.0
 342  *--FreeBSD           |      |                 |                       |
 343  |   11.0             |      |                 |                       |
 344  |                    |      |                 |                       |
 345  |                    |      |                 |                       |
 346 FreeBSD 12 -current   |  NetBSD -current  OpenBSD -current     DragonFly -current
 347  |                    |      |                 |                       |
 348  v                    v      v                 v                       v
 349
 350 Time
 351 ----------------
 352
 353 Time tolerance +/- 6 months, depending on which book/article you read; if it
 354 was the announcement in Usenet or if it was available as tape.
 355
 356 [44B] McKusick, Marshall Kirk, Keith Bostic, Michael J Karels,
 357         and John Quarterman. The Design and Implementation of
 358         the 4.4BSD Operating System.
 359 [APL] Apple website [http://www.apple.com/macosx/]
 360 [BSDI] Berkeley Software Design, Inc.
 361 [DFB] DragonFlyBSD Project, The.
 362 [DOC] README, COPYRIGHT on tape.
 363 [FBD] FreeBSD Project, The.
 364 [KB]  Keith Bostic. BSD2.10 available from Usenix. comp.unix.sources,
 365         Volume 11, Info 4, April, 1987.
 366 [KKK] Mike Karels, Kirk McKusick, and Keith Bostic. tahoe announcement.
 367         comp.bugs.4bsd.ucb-fixes, June 15, 1988.
 368 [KSJ] Michael J. Karels, Carl F. Smith, and William F. Jolitz.
 369         Changes in the Kernel in 2.9BSD. Second Berkeley Software
 370         Distribution UNIX Version 2.9, July, 1983.
 371 [NBD] NetBSD Project, The.
 372 [OBD] OpenBSD Project, The.
 373 [QCU] Salus, Peter H. A quarter century of UNIX.
 374 [SMS] Steven M. Schultz. 2.11BSD, UNIX for the PDP-11.
 375 [TUHS] The Unix Historical Society.  http://minnie.tuhs.org/Unix_History/.
 376 [USE] Usenet announcement.
 377 [WRS] Wind River Systems, Inc.
 378 [dmr] Dennis Ritchie, via E-Mail
 379
 380 Multics                 1965
 381 UNIX                    Summer 1969
 382                                 DEC PDP-7
 383 First   Edition         1971-11-03 [QCU]
 384                                 DEC PDP-11/20, Assembler
 385 Second  Edition         1972-06-12 [QCU]
 386                                 10 UNIX installations
 387 Third   Edition         1973-02-xx [QCU]
 388                                 Pipes, 16 installations
 389 Fourth  Edition         1973-11-xx [QCU]
 390                                 rewriting in C effected,
 391                                 above 30 installations
 392 Fifth   Edition         1974-06-xx [QCU]
 393                                 above 50 installations
 394 Sixth   Edition         1975-05-xx [QCU]
 395                                 port to DEC Vax
 396 Seventh Edition         1979-01-xx [QCU]
 397                                 first portable UNIX
 398 Eighth  Edition         1985-02-xx [QCU]
 399                                 VAX 11/750, VAX 11/780 [dmr]
 400                                 descended from 4.1c BSD [dmr]
 401                                 descended from 4.1 BSD [44B]
 402                         scooping-out and replacement of the character-device
 403                         and networking part by the streams mechanism
 404
 405 Ninth   Edition         1986-09-xx [QCU]
 406 Tenth   Edition         1989-10-xx [QCU]
 407
 408 1BSD                    late 1977
 409                         1978-03-09 [QCU]
 410                                 PDP-11, Pascal, ex(1)
 411                                 30 free copies of 1BSD sent out
 412                                 35 tapes sold for 50 USD [QCU]
 413 2BSD                    mid 1978 [QCU] 1979-05-10 [TUHS]
 414                                 75 2BSD tapes shipped
 415 2.79BSD                 1980-04-xx [TUHS]
 416 2.8BSD                  1981-07-xx [KSJ]
 417
 418 2.8.1BSD                1982-01-xx [QCU]
 419                                 set of performance improvements
 420 2.9BSD                  1983-07-xx [KSJ]
 421 2.9.1BSD                1983-11-xx [TUHS]
 422 2.9BSD-Seismo           1985-08-xx [SMS]
 423 2.10BSD                 1987-04-xx [KKK]
 424 2.10.1BSD               1989-01-xx [SMS]
 425 2.11BSD                 1992-02-xx [SMS]
 426 2.11BSD rev #430        1999-12-13 [SMS]
 427
 428 32V                     1978-1[01]-xx [QCU]
 429 3BSD                    late 1979 [QCU] March 1980 [TUHS]
 430                                 virtual memory, page replacement,
 431                                 demand paging
 432 4.0BSD                  1980-10-xx
 433 4.1BSD                  1981-07-08 [DOC]
 434 4.1aBSD                 1982-04-xx
 435                                 alpha release, 100 sites, networking [44B]
 436 4.1bBSD                         internal release, fast filesystem [44B]
 437 4.1cBSD                 late 1982
 438                                 beta release, IPC [44B]
 439 4.2BSD                  1983-09-xx [QCU]
 440                         1983-08-03 [DOC]
 441 4.3BSD                  1986-06-xx [QCU]
 442                         1986-04-05 [KB], [DOC]
 443 4.3BSD Tahoe            1988-06-15 [QCU], [DOC]
 444 4.3BSD NET/1            1988-11-xx [QCU]
 445                         1989-01-01 [DOC]
 446 4.3BSD Reno             1990-06-29 [QCU], [DOC]
 447 4.3BSD NET/2            1991-06-28 [QCU], [DOC]
 448
 449 BSD/386 ALPHA           1991-12-xx [BSDI]
 450                                 first code released to people outside BSDI
 451 386BSD 0.0              1992-02-xx [DOC]
 452 BSD/386 0.3.1           1992-04-xx [BSDI] first ext. beta; B customers
 453 BSD/386 0.3.3           1992-06-xx [BSDI] first CDROM version
 454 386BSD 0.1              1992-07-28 [DOC]
 455 4.4BSD Alpha            1992-07-07
 456 BSD/386 0.9.3           1992-10-xx [BSDI]
 457                                 first external gamma; G customers
 458 BSD/386 0.9.4           1992-12-xx [BSDI]
 459                                 would have been 1.0 except for request
 460                                 for preliminary injunction
 461 BSD/386 1.0             1993-03-xx [BSDI]
 462                                 injunction denied; first official release
 463 NetBSD 0.8              1993-04-20 [NBD]
 464 4.4BSD                  1993-06-01 [USE]
 465 NetBSD 0.9              1993-08-23 [NBD]
 466 FreeBSD 1.0             1993-11-01 [FBD]
 467 FreeBSD 1.0.2           1993-11-14 [FBD]
 468                                 supersedes 1.0 13 days after release.
 469 BSD/386 1.1             1994-02-xx [BSDI]
 470 4.4BSD Lite             1994-03-01 [USE]
 471 FreeBSD 1.1             1994-05-07 [FBD]
 472 FreeBSD 1.1.5           1994-06-30 [FBD]
 473 FreeBSD 1.1.5.1         1994-07-05 [FBD]
 474                                 supersedes 1.1.5 5 days after release.
 475 NetBSD 1.0              1994-10-26 [NBD]
 476 386BSD 1.0              1994-11-12 [USE]
 477 FreeBSD 2.0             1994-11-23 [FBD]
 478 BSD/OS 2.0              1995-01-xx [BSDI] 4.4 lite based
 479 FreeBSD 2.0.5           1995-06-10 [FBD]
 480 BSD/OS 2.0.1            1995-06-xx [BSDI]
 481 4.4BSD Lite Release 2   1995-06-xx [44B]
 482                                 the true final distribution from the CSRG
 483 FreeBSD 2.1.0           1995-11-19 [FBD]
 484 NetBSD 1.1              1995-11-26 [NBD]
 485 BSD/OS 2.1              1996-01-xx [BSDI]
 486 FreeBSD 2.1.5           1996-07-14 [FBD]
 487 NetBSD 1.2              1996-10-04 [NBD]
 488 OpenBSD 2.0             1996-10-18 [OBD]
 489 FreeBSD 2.1.6           1996-11-16 [FBD]
 490 FreeBSD 2.1.6.1         1996-11-25 [FBD] (sendmail security release)
 491 Rhapsody                1997-xx-xx
 492 FreeBSD 2.1.7           1997-02-20 [FBD]
 493 BSD/OS 3.0              1997-02-xx [BSDI] 4.4 lite2 based
 494 FreeBSD 2.2.0           1997-03-16 [FBD]
 495 FreeBSD 2.2.1           1997-03-25 [FBD]
 496 FreeBSD 2.2.2           1997-05-16 [FBD]
 497 NetBSD 1.2.1            1997-05-20 [NBD] (patch release)
 498 OpenBSD 2.1             1997-06-01 [OBD]
 499 FreeBSD 2.2.5           1997-10-22 [FBD]
 500 OpenBSD 2.2             1997-12-01 [OBD]
 501 NetBSD 1.3              1998-01-04 [NBD]
 502 FreeBSD 2.2.6           1998-03-25 [FBD]
 503 NetBSD 1.3.1            1998-03-09 [NBD] (patch release)
 504 BSD/OS 3.1              1998-03-xx [BSDI]
 505 OpenBSD 2.3             1998-05-19 [OBD]
 506 NetBSD 1.3.2            1998-05-29 [NBD] (patch release)
 507 FreeBSD 2.2.7           1998-07-22 [FBD]
 508 BSD/OS 4.0              1998-08-xx [BSDI]
 509                                 2-lock MP support, ELF executables
 510 FreeBSD 3.0             1998-10-16 [FBD]
 511                                 FreeBSD-3.0 is a snapshot from -current,
 512                                 while 3.1 and 3.2 are from 3.x-stable which
 513                                 was branched quite some time after 3.0-release
 514 FreeBSD 2.2.8           1998-11-29 [FBD]
 515 OpenBSD 2.4             1998-12-01 [OBD]
 516 NetBSD 1.3.3            1998-12-23 [NBD] (patch release)
 517 FreeBSD 3.1             1999-02-15 [FBD]
 518 BSD/OS 4.0.1            1999-03-xx [BSDI]
 519 NetBSD 1.4              1999-05-12 [NBD]
 520 FreeBSD 3.2             1999-05-17 [FBD]
 521 OpenBSD 2.5             1999-05-19 [OBD]
 522 NetBSD 1.4.1            1999-08-26 [NBD] (patch release)
 523 FreeBSD 3.3             1999-09-17 [FBD]
 524 OpenBSD 2.6             1999-12-01 [OBD]
 525 FreeBSD 3.4             1999-12-20 [FBD]
 526 BSD/OS 4.1              1999-12-xx [BSDI]
 527 FreeBSD 4.0             2000-03-13 [FBD]
 528 NetBSD 1.4.2            2000-03-19 [NBD] (patch release)
 529 OpenBSD 2.7             2000-06-15 [OBD]
 530 FreeBSD 3.5             2000-06-24 [FBD]
 531 FreeBSD 4.1             2000-07-27 [FBD]
 532 FreeBSD 3.5.1           2000-07-28 [FBD]
 533 FreeBSD 4.1.1           2000-09-25 [FBD] (a network-only patch release)
 534 FreeBSD 4.2             2000-11-21 [FBD]
 535 NetBSD 1.4.3            2000-11-25 [NBD] (patch release)
 536 BSD/OS 4.2              2000-11-29 [BSDI]
 537 OpenBSD 2.8             2000-12-01 [OBD]
 538 NetBSD 1.5              2000-12-06 [NBD]
 539 Mac OS X 10.0           2001-03-24 [APL]
 540 FreeBSD 4.3             2001-04-20 [FBD]
 541 OpenBSD 2.9             2001-06-01 [OBD]
 542 NetBSD 1.5.1            2001-07-11 [NBD] (patch release)
 543 NetBSD 1.5.2            2001-09-13 [NBD] (patch release)
 544 FreeBSD 4.4             2001-09-18 [FBD]
 545 Mac OS X 10.1           2001-09-29 [APL]
 546 OpenBSD 3.0             2001-12-01 [OBD]
 547 FreeBSD 4.5             2002-01-29 [FBD]
 548 BSD/OS 4.3              2002-03-14 [WRS]
 549 OpenBSD 3.1             2002-05-19 [OBD]
 550 FreeBSD 4.6             2002-06-15 [FBD]
 551 NetBSD 1.5.3            2002-07-22 [NBD] (patch release)
 552 FreeBSD 4.6.2           2002-08-15 [FBD] (patch release)
 553 Mac OS X 10.2           2002-08-23 [APL]
 554 NetBSD 1.6              2002-09-14 [NBD]
 555 FreeBSD 4.7             2002-10-08 [FBD]
 556 OpenBSD 3.2             2002-11-01 [OBD]
 557 FreeBSD 5.0             2003-01-17 [FBD]
 558                                 FreeBSD 5.0 is a separate branch off of
 559                                 -current, similar to 3.0.
 560 FreeBSD 4.8             2003-04-03 [FBD]
 561 NetBSD 1.6.1            2003-04-21 [NBD] (patch release)
 562 OpenBSD 3.3             2003-05-01 [OBD]
 563 BSD/OS 5.0              2003-05-?? [WRS]
 564 FreeBSD 5.1             2003-06-09 [FBD]
 565 Mac OS X 10.3           2003-10-24 [APL]
 566 FreeBSD 4.9             2003-10-28 [FBD]
 567 BSD/OS 5.1 ISE          2003-10-?? [WRS] (final version)
 568 OpenBSD 3.4             2003-11-01 [OBD]
 569 FreeBSD 5.2             2004-01-12 [FBD]
 570 FreeBSD 5.2.1           2004-02-22 [FBD] (patch release)
 571 NetBSD 1.6.2            2004-03-01 [NBD] (patch release)
 572 OpenBSD 3.5             2004-04-01 [OBD]
 573 FreeBSD 4.10            2004-05-27 [FBD]
 574 DragonFly 1.0           2004-07-12 [DFB]
 575 OpenBSD 3.6             2004-10-29 [OBD]
 576 FreeBSD 5.3             2004-11-06 [FBD]
 577 NetBSD 2.0              2004-12-09 [NBD]
 578 FreeBSD 4.11            2005-01-25 [FBD]
 579 DragonFly 1.2.0         2005-04-08 [DFB]
 580 NetBSD 2.0.2            2005-04-14 [NBD] (security/critical release)
 581 Mac OS X 10.4           2005-04-29 [APL]
 582 FreeBSD 5.4             2005-05-09 [FBD]
 583 OpenBSD 3.7             2005-05-19 [OBD]
 584 NetBSD 2.0.3            2005-10-31 [NBD] (security/critical release)
 585 OpenBSD 3.8             2005-11-01 [OBD]
 586 FreeBSD 6.0             2005-11-01 [FBD]
 587 NetBSD 2.1              2005-11-02 [NBD]
 588 NetBSD 3.0              2005-12-23 [NBD]
 589 DragonFly 1.4.0         2006-01-08 [DFB]
 590 FreeBSD 2.2.9           2006-04-01 [FBD]
 591 OpenBSD 3.9             2006-05-01 [OBD]
 592 FreeBSD 6.1             2006-05-08 [FBD]
 593 FreeBSD 5.5             2006-05-25 [FBD]
 594 NetBSD 3.0.1            2006-07-24 [NBD] (security/critical release)
 595 DragonFly 1.6.0         2006-07-24 [DFB]
 596 OpenBSD 4.0             2006-11-01 [OBD]
 597 NetBSD 3.0.2            2006-11-04 [NBD] (security/critical release)
 598 NetBSD 3.1              2006-11-04 [NBD]
 599 FreeBSD 6.2             2007-01-15 [FBD]
 600 DragonFly 1.8.0         2007-01-30 [DFB]
 601 OpenBSD 4.1             2007-05-01 [OBD]
 602 DragonFly 1.10.0        2007-08-06 [DFB]
 603 Mac OS X 10.5           2007-10-26 [APL]
 604 OpenBSD 4.2             2007-11-01 [OBD]
 605 NetBSD 4.0              2007-12-19 [NBD]
 606 FreeBSD 6.3             2008-01-18 [FBD]
 607 DragonFly 1.12.0        2008-02-26 [DFB]
 608 FreeBSD 7.0             2008-02-27 [FBD]
 609 OpenBSD 4.3             2008-05-01 [OBD]
 610 DragonFly 2.0.0         2008-07-21 [DFB]
 611 OpenBSD 4.4             2008-11-01 [OBD]
 612 FreeBSD 6.4             2008-11-28 [FBD]
 613 FreeBSD 7.1             2009-01-04 [FBD]
 614 DragonFly 2.2.0         2009-02-17 [DFB]
 615 NetBSD 5.0              2009-04-29 [NBD]
 616 OpenBSD 4.5             2009-05-01 [OBD]
 617 FreeBSD 7.2             2009-05-04 [FBD]
 618 Mac OS X 10.6           2009-06-08 [APL]
 619 NetBSD 5.0.1            2009-08-02 [NBD] (security/critical release)
 620 DragonFly 2.4.0         2009-09-16 [DFB]
 621 OpenBSD 4.6             2009-10-18 [OBD]
 622 FreeBSD 8.0             2009-11-26 [FBD]
 623 NetBSD 5.0.2            2010-02-12 [NBD] (security/critical release)
 624 FreeBSD 7.3             2010-03-23 [FBD]
 625 DragonFly 2.6.0         2010-03-28 [DFB]
 626 OpenBSD 4.7             2010-05-19 [OBD]
 627 FreeBSD 8.1             2010-07-24 [FBD]
 628 DragonFly 2.8.2         2010-10-30 [DFB]
 629 OpenBSD 4.8             2010-11-01 [OBD]
 630 NetBSD 5.1              2010-11-19 [NBD]
 631 FreeBSD 7.4             2011-02-24 [FBD]
 632 FreeBSD 8.2             2011-02-24 [FBD]
 633 DragonFly 2.10.1        2011-04-26 [DFB]
 634 OpenBSD 4.9             2011-05-01 [OBD]
 635 Mac OS X 10.7           2011-07-20 [APL]
 636 OpenBSD 5.0             2011-11-01 [OBD]
 637 FreeBSD 9.0             2012-01-12 [FBD]
 638 NetBSD 5.1.2            2012-02-02 [NBD] (security/critical release)
 639 DragonFly 3.0.1         2012-02-21 [DFB]
 640 FreeBSD 8.3             2012-04-18 [FBD]
 641 OpenBSD 5.1             2012-05-01 [OBD]
 642 Mac OS X 10.8           2012-07-25 [APL]
 643 NetBSD 6.0              2012-10-17 [NBD]
 644 OpenBSD 5.2             2012-11-01 [OBD]
 645 DragonFly 3.2.1         2012-11-02 [DFB]
 646 NetBSD 5.2              2012-12-03 [NBD]
 647 NetBSD 6.0.1            2012-12-26 [NBD] (security/critical release)
 648 FreeBSD 9.1             2012-12-30 [FBD]
 649 DragonFly 3.4.1         2013-04-29 [DFB]
 650 OpenBSD 5.3             2013-05-01 [OBD]
 651 NetBSD 6.0.2            2013-05-18 [NBD] (security/critical release)
 652 NetBSD 6.1              2013-05-18 [NBD]
 653 FreeBSD 8.4             2013-06-07 [FBD]
 654 NetBSD 6.1.1            2013-08-22 [NBD]
 655 NetBSD 5.1.3            2013-09-29 [NBD]
 656 NetBSD 5.2.1            2013-09-29 [NBD]
 657 FreeBSD 9.2             2013-09-30 [FBD]
 658 NetBSD 6.0.3            2013-09-30 [NBD]
 659 NetBSD 6.1.2            2013-09-30 [NBD]
 660 Mac OS X 10.9           2013-10-22 [APL]
 661 OpenBSD 5.4             2013-11-01 [OBD]
 662 DragonFly 3.6.0         2013-11-25 [DFB]
 663 FreeBSD 10.0            2014-01-20 [FBD]
 664 NetBSD 6.0.4            2014-01-27 [NBD]
 665 NetBSD 6.1.3            2014-01-27 [NBD]
 666 DragonFly 3.6.1         2014-02-22 [DFB]
 667 DragonFly 3.6.2         2014-04-10 [DFB]
 668 NetBSD 6.0.5            2014-04-19 [NDB]
 669 NetBSD 6.1.4            2014-04-19 [NDB]
 670 OpenBSD 5.5             2014-05-01 [OBD]
 671 DragonFly 3.8.0         2014-06-04 [DFB]
 672 DragonFly 3.8.1         2014-06-16 [DFB]
 673 DragonFly 3.6.3         2014-06-17 [DFB]
 674 FreeBSD 9.3             2014-07-05 [FBD]
 675 DragonFly 3.8.2         2014-08-08 [DFB]
 676 NetBSD 6.1.5            2014-09-22 [NBD]
 677 Mac OS X 10.10          2014-10-16 [APL]
 678 OpenBSD 5.6             2014-11-01 [OBD]
 679 FreeBSD 10.1            2014-11-14 [FBD]
 680 DragonFly 4.0.1         2014-11-25 [DFB]
 681 DragonFly 4.0.2         2015-01-07 [DFB]
 682 DragonFly 4.0.3         2015-01-21 [DFB]
 683 DragonFly 4.0.4         2015-03-09 [DFB]
 684 DragonFly 4.0.5         2015-03-23 [DFB]
 685 OpenBSD 5.7             2015-05-01 [OBD]
 686 DragonFly 4.2.0         2015-06-29 [DFB]
 687 FreeBSD 10.2            2015-08-13 [FBD]
 688 NetBSD 7.0              2015-09-25 [NBD]
 689 OS X 10.11              2015-09-30 [APL]
 690 OpenBSD 5.8             2015-10-18 [OBD]
 691 DragonFly 4.4.1         2015-12-07 [DFB]
 692 OpenBSD 5.9             2016-03-29 [OBD]
 693 FreeBSD 10.3            2016-04-04 [FBD]
 694 DragonFly 4.6.0         2016-08-02 [DFB]
 695
 696 Bibliography
 697 ------------------------
 698
 699 Leffler, Samuel J., Marshall Kirk McKusick, Michael J Karels and John
 700 Quarterman. The Design and Implementation of the 4.3BSD UNIX Operating
 701 System. Reading, Mass. Addison-Wesley, 1989. ISBN 0-201-06196-1
 702
 703 Salus, Peter H. A quarter century of UNIX. Addison-Wesley Publishing
 704 Company, Inc., 1994. ISBN 0-201-54777-5
 705
 706 McKusick, Marshall Kirk, Keith Bostic, Michael J Karels, and John
 707 Quarterman. The Design and Implementation of the 4.4BSD Operating
 708 System. Reading, Mass. Addison-Wesley, 1996. ISBN 0-201-54979-4
 709
 710 McKusick, Marshall Kirk, George Neville-Neil. The Design and
 711 Implementation of the FreeBSD Operating System.
 712 Addison-Wesley Professional, Published: Aug 2, 2004. ISBN 0-201-70245-2
 713
 714 McKusick, Marshall Kirk, George Neville-Neil, Robert Watson. The
 715 Design and Implementation of the FreeBSD Operating System, 2nd Edition.
 716 Pearson Education, Inc., 2014. ISBN 0-321-96897-2
 717
 718 Doug McIlroy. Research Unix Reader.
 719
 720 Michael G. Brown. The Role of BSD in the Development of Unix.
 721 Presented to the Tasmanian Unix Special Interest Group of the
 722 Australian Computer Society, Hobart, August 1993.
 723
 724 Peter H. Salus. Unix at 25. Byte Magazine, October 1994.
 725 URL: http://www.byte.com/art/9410/sec8/art3.htm
 726
 727 Andreas Klemm, Lars Köller. If you're going to San Francisco ...
 728 Die freien BSD-Varianten von Unix. c't April 1997, page 368ff.
 729
 730 BSD Release Announcements collection.
 731 URL: http://www.FreeBSD.org/releases/
 732
 733 BSD Hypertext Man Pages
 734 URL: http://www.FreeBSD.org/cgi/man.cgi
 735
 736 UNIX history graphing project
 737 URL: http://minnie.tuhs.org/Unix_History/index.html
 738
 739 UNIX history
 740 URL: http://www.levenez.com/unix/
 741
 742 James Howard: The BSD Family Tree
 743 URL: http://ezine.daemonnews.org/200104/bsd_family.html
 744 ("what are the differences between FreeBSD, NetBSD, and OpenBSD?")
 745
 746
 747 Acknowledgments
 748 ---------------
 749
 750 Josh Gilliam for suggestions, bug fixes, and finding very old
 751 original BSD announcements from Usenet or tapes.
 752
 753 Steven M. Schultz for providing 2.8BSD, 2.10BSD, 2.11BSD manual pages.
 754
 755 --
 756 Copyright (c) 1997-2012 Wolfram Schneider <wosch@FreeBSD.ORG>
 757 URL: http://svnweb.freebsd.org/base/head/share/misc/bsd-family-tree
 758
 759 $FreeBSD: head/share/misc/bsd-family-tree 303739 2016-08-04 10:49:00Z maxim $