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