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  |     |       |      |      | |      |        |                       |
 262  |     |       |      |      | |   NetBSD      |                       |
 263  |     |       |      |      | |    5.1.4      |                       |
 264  |     |       |      |      | |           OpenBSD 5.1                 |
 265  |     |       |   Mac OS X  | `----.          |                       |
 266  |     |       |     10.8    |       \         |                       |
 267  |     |       |      |   NetBSD 6.0  |        |                       |
 268  |     |       |      |      | | |    |    OpenBSD 5.2         DragonFly 3.2.1
 269  |  FreeBSD    |      |      | | | NetBSD      |                       |
 270  |    9.1      |      |      | | |   5.2       |                       |
 271  |     |       |      |      | | |    |        |                       |
 272  |     |       |      |      | | | NetBSD      |                       |
 273  |     |       |      |      | | |  5.2.1      |                       |
 274  |     |       |      |      | | |    |        |                       |
 275  |     |       |      |      | | | NetBSD      |                       |
 276  |     |       |      |      | | |  5.2.2      |                       |
 277  |     |       |      |      | | |             |                       |
 278  |     |       |      |      | |  \            |                       |
 279  |     |       |      |      | |   NetBSD      |                       |
 280  |     |       |      |      | |    6.0.1      |                       |
 281  |     |       |      |      | |      |   OpenBSD 5.3          DragonFly 3.4.1
 282  |     |       |      |      | |   NetBSD      |                       |
 283  |     |       |      |      | |    6.0.2      |                       |
 284  |     |       |      |      | |      |        |                       |
 285  |     |       |      |      | |   NetBSD      |                       |
 286  |     |       |      |      | |    6.0.3      |                       |
 287  |     |       |      |      | |      |        |                       |
 288  |     |       |      |      | |   NetBSD      |                       |
 289  |     |       |      |      | |    6.0.4      |                       |
 290  |     |       |      |      | |      |        |                       |
 291  |     |       |      |      | |   NetBSD      |                       |
 292  |     |       |      |      | |    6.0.5      |                       |
 293  |     |       |      |      | |               |                       |
 294  |     |       |      |      | |`-NetBSD 6.1   |                       |
 295  |     |    FreeBSD   |      |       |         |                       |
 296  |     |      8.4     |      |    NetBSD 6.1.1 |                       |
 297  |     |              |      |       |         |                       |
 298  |  FreeBSD           |      |    NetBSD 6.1.2 |                       |
 299  |    9.2          Mac OS X  |       |         |                       |
 300  |     |             10.9    |       |    OpenBSD 5.4                  |
 301  |     `-----.        |      |       |         |               DragonFly 3.6.0
 302  |            \       |      |       |         |                       |
 303  *--FreeBSD    |      |      |    NetBSD 6.1.3 |                       |
 304  |   10.0      |      |      |       |         |                       |
 305  |     |       |      |      |       |         |               DragonFly 3.6.1
 306  |     |       |      |      |       |         |                       |
 307  |     |       |      |      |       |         |                       |
 308  |     |       |      |      |       |         |               DragonFly 3.6.2
 309  |     |       |      |      |    NetBSD 6.1.4 |                       |
 310  |     |       |      |      |       |         |                       |
 311  |     |       |      |      |       |    OpenBSD 5.5                  |
 312  |     |       |      |      |       |         |                       |
 313  |     |       |      |      |       |         |               DragonFly 3.8.0
 314  |     |       |      |      |       |         |                       |
 315  |     |       |      |      |       |         |                       |
 316  |     |       |      |      |       |         |               DragonFly 3.8.1
 317  |     |       |      |      |       |         |                       |
 318  |     |       |      |      |       |         |                       |
 319  |     |       |      |      |       |         |               DragonFly 3.6.3
 320  |     |       |      |      |       |         |                       |
 321  |     |    FreeBSD   |      |       |         |                       |
 322  |     |      9.3     |      |       |         |                       |
 323  |     |              |      |    NetBSD 6.1.5 |               DragonFly 3.8.2
 324  |     |           Mac OS X  |                 |                       |
 325  |     |             10.10   |                 |                       |
 326  |     |              |      |            OpenBSD 5.6                  |
 327  |  FreeBSD           |      |                 |                       |
 328  |   10.1             |      |                 |               DragonFly 4.0.1
 329  |     |              |      |                 |                       |
 330  |     |              |      |                 |               DragonFly 4.0.2
 331  |     |              |      |                 |                       |
 332  |     |              |      |                 |               DragonFly 4.0.3
 333  |     |              |      |                 |                       |
 334  |     |              |      |                 |               DragonFly 4.0.4
 335  |     |              |      |                 |                       |
 336  |     |              |      |                 |               DragonFly 4.0.5
 337  |     |              |      |                 |                       |
 338  |     |              |      |            OpenBSD 5.7                  |
 339  |     |              |      |                 |               DragonFly 4.2.0
 340  |  FreeBSD           |      |                 |                       |
 341  |   10.2             |      |                 |                       |
 342  |     |            OS X  NetBSD 7.0           |                       |
 343  |     |            10.11    |            OpenBSD 5.8                  |
 344  |     |              |      |                 |               DragonFly 4.4.1
 345  |  FreeBSD           |      |            OpenBSD 5.9                  |
 346  |   10.3             |      |                 |                       |
 347  |                    |   NetBSD 7.0.1         |                       |
 348  |                    |      |                 |               DragonFly 4.6.0
 349  *--FreeBSD           |      |            OpenBSD 6.0                  |
 350  |   11.0             |      |                 |                       |
 351  |                    |      |                 |                       |
 352  |                    |      |                 |                       |
 353 FreeBSD 12 -current   |  NetBSD -current  OpenBSD -current     DragonFly -current
 354  |                    |      |                 |                       |
 355  v                    v      v                 v                       v
 356
 357 Time
 358 ----------------
 359
 360 Time tolerance +/- 6 months, depending on which book/article you read; if it
 361 was the announcement in Usenet or if it was available as tape.
 362
 363 [44B] McKusick, Marshall Kirk, Keith Bostic, Michael J Karels,
 364         and John Quarterman. The Design and Implementation of
 365         the 4.4BSD Operating System.
 366 [APL] Apple website [http://www.apple.com/macosx/]
 367 [BSDI] Berkeley Software Design, Inc.
 368 [DFB] DragonFlyBSD Project, The.
 369 [DOC] README, COPYRIGHT on tape.
 370 [FBD] FreeBSD Project, The.
 371 [KB]  Keith Bostic. BSD2.10 available from Usenix. comp.unix.sources,
 372         Volume 11, Info 4, April, 1987.
 373 [KKK] Mike Karels, Kirk McKusick, and Keith Bostic. tahoe announcement.
 374         comp.bugs.4bsd.ucb-fixes, June 15, 1988.
 375 [KSJ] Michael J. Karels, Carl F. Smith, and William F. Jolitz.
 376         Changes in the Kernel in 2.9BSD. Second Berkeley Software
 377         Distribution UNIX Version 2.9, July, 1983.
 378 [NBD] NetBSD Project, The.
 379 [OBD] OpenBSD Project, The.
 380 [QCU] Salus, Peter H. A quarter century of UNIX.
 381 [SMS] Steven M. Schultz. 2.11BSD, UNIX for the PDP-11.
 382 [TUHS] The Unix Historical Society.  http://minnie.tuhs.org/Unix_History/.
 383 [USE] Usenet announcement.
 384 [WRS] Wind River Systems, Inc.
 385 [dmr] Dennis Ritchie, via E-Mail
 386
 387 Multics                 1965
 388 UNIX                    Summer 1969
 389                                 DEC PDP-7
 390 First   Edition         1971-11-03 [QCU]
 391                                 DEC PDP-11/20, Assembler
 392 Second  Edition         1972-06-12 [QCU]
 393                                 10 UNIX installations
 394 Third   Edition         1973-02-xx [QCU]
 395                                 Pipes, 16 installations
 396 Fourth  Edition         1973-11-xx [QCU]
 397                                 rewriting in C effected,
 398                                 above 30 installations
 399 Fifth   Edition         1974-06-xx [QCU]
 400                                 above 50 installations
 401 Sixth   Edition         1975-05-xx [QCU]
 402                                 port to DEC Vax
 403 Seventh Edition         1979-01-xx [QCU]
 404                                 first portable UNIX
 405 Eighth  Edition         1985-02-xx [QCU]
 406                                 VAX 11/750, VAX 11/780 [dmr]
 407                                 descended from 4.1c BSD [dmr]
 408                                 descended from 4.1 BSD [44B]
 409                         scooping-out and replacement of the character-device
 410                         and networking part by the streams mechanism
 411
 412 Ninth   Edition         1986-09-xx [QCU]
 413 Tenth   Edition         1989-10-xx [QCU]
 414
 415 1BSD                    late 1977
 416                         1978-03-09 [QCU]
 417                                 PDP-11, Pascal, ex(1)
 418                                 30 free copies of 1BSD sent out
 419                                 35 tapes sold for 50 USD [QCU]
 420 2BSD                    mid 1978 [QCU] 1979-05-10 [TUHS]
 421                                 75 2BSD tapes shipped
 422 2.79BSD                 1980-04-xx [TUHS]
 423 2.8BSD                  1981-07-xx [KSJ]
 424
 425 2.8.1BSD                1982-01-xx [QCU]
 426                                 set of performance improvements
 427 2.9BSD                  1983-07-xx [KSJ]
 428 2.9.1BSD                1983-11-xx [TUHS]
 429 2.9BSD-Seismo           1985-08-xx [SMS]
 430 2.10BSD                 1987-04-xx [KKK]
 431 2.10.1BSD               1989-01-xx [SMS]
 432 2.11BSD                 1992-02-xx [SMS]
 433 2.11BSD rev #430        1999-12-13 [SMS]
 434
 435 32V                     1978-1[01]-xx [QCU]
 436 3BSD                    late 1979 [QCU] March 1980 [TUHS]
 437                                 virtual memory, page replacement,
 438                                 demand paging
 439 4.0BSD                  1980-10-xx
 440 4.1BSD                  1981-07-08 [DOC]
 441 4.1aBSD                 1982-04-xx
 442                                 alpha release, 100 sites, networking [44B]
 443 4.1bBSD                         internal release, fast filesystem [44B]
 444 4.1cBSD                 late 1982
 445                                 beta release, IPC [44B]
 446 4.2BSD                  1983-09-xx [QCU]
 447                         1983-08-03 [DOC]
 448 4.3BSD                  1986-06-xx [QCU]
 449                         1986-04-05 [KB], [DOC]
 450 4.3BSD Tahoe            1988-06-15 [QCU], [DOC]
 451 4.3BSD NET/1            1988-11-xx [QCU]
 452                         1989-01-01 [DOC]
 453 4.3BSD Reno             1990-06-29 [QCU], [DOC]
 454 4.3BSD NET/2            1991-06-28 [QCU], [DOC]
 455
 456 BSD/386 ALPHA           1991-12-xx [BSDI]
 457                                 first code released to people outside BSDI
 458 386BSD 0.0              1992-02-xx [DOC]
 459 BSD/386 0.3.1           1992-04-xx [BSDI] first ext. beta; B customers
 460 BSD/386 0.3.3           1992-06-xx [BSDI] first CDROM version
 461 386BSD 0.1              1992-07-28 [DOC]
 462 4.4BSD Alpha            1992-07-07
 463 BSD/386 0.9.3           1992-10-xx [BSDI]
 464                                 first external gamma; G customers
 465 BSD/386 0.9.4           1992-12-xx [BSDI]
 466                                 would have been 1.0 except for request
 467                                 for preliminary injunction
 468 BSD/386 1.0             1993-03-xx [BSDI]
 469                                 injunction denied; first official release
 470 NetBSD 0.8              1993-04-20 [NBD]
 471 4.4BSD                  1993-06-01 [USE]
 472 NetBSD 0.9              1993-08-23 [NBD]
 473 FreeBSD 1.0             1993-11-01 [FBD]
 474 FreeBSD 1.0.2           1993-11-14 [FBD]
 475                                 supersedes 1.0 13 days after release.
 476 BSD/386 1.1             1994-02-xx [BSDI]
 477 4.4BSD Lite             1994-03-01 [USE]
 478 FreeBSD 1.1             1994-05-07 [FBD]
 479 FreeBSD 1.1.5           1994-06-30 [FBD]
 480 FreeBSD 1.1.5.1         1994-07-05 [FBD]
 481                                 supersedes 1.1.5 5 days after release.
 482 NetBSD 1.0              1994-10-26 [NBD]
 483 386BSD 1.0              1994-11-12 [USE]
 484 FreeBSD 2.0             1994-11-23 [FBD]
 485 BSD/OS 2.0              1995-01-xx [BSDI] 4.4 lite based
 486 FreeBSD 2.0.5           1995-06-10 [FBD]
 487 BSD/OS 2.0.1            1995-06-xx [BSDI]
 488 4.4BSD Lite Release 2   1995-06-xx [44B]
 489                                 the true final distribution from the CSRG
 490 FreeBSD 2.1.0           1995-11-19 [FBD]
 491 NetBSD 1.1              1995-11-26 [NBD]
 492 BSD/OS 2.1              1996-01-xx [BSDI]
 493 FreeBSD 2.1.5           1996-07-14 [FBD]
 494 NetBSD 1.2              1996-10-04 [NBD]
 495 OpenBSD 2.0             1996-10-18 [OBD]
 496 FreeBSD 2.1.6           1996-11-16 [FBD]
 497 FreeBSD 2.1.6.1         1996-11-25 [FBD] (sendmail security release)
 498 Rhapsody                1997-xx-xx
 499 FreeBSD 2.1.7           1997-02-20 [FBD]
 500 BSD/OS 3.0              1997-02-xx [BSDI] 4.4 lite2 based
 501 FreeBSD 2.2.0           1997-03-16 [FBD]
 502 FreeBSD 2.2.1           1997-03-25 [FBD]
 503 FreeBSD 2.2.2           1997-05-16 [FBD]
 504 NetBSD 1.2.1            1997-05-20 [NBD] (patch release)
 505 OpenBSD 2.1             1997-06-01 [OBD]
 506 FreeBSD 2.2.5           1997-10-22 [FBD]
 507 OpenBSD 2.2             1997-12-01 [OBD]
 508 NetBSD 1.3              1998-01-04 [NBD]
 509 FreeBSD 2.2.6           1998-03-25 [FBD]
 510 NetBSD 1.3.1            1998-03-09 [NBD] (patch release)
 511 BSD/OS 3.1              1998-03-xx [BSDI]
 512 OpenBSD 2.3             1998-05-19 [OBD]
 513 NetBSD 1.3.2            1998-05-29 [NBD] (patch release)
 514 FreeBSD 2.2.7           1998-07-22 [FBD]
 515 BSD/OS 4.0              1998-08-xx [BSDI]
 516                                 2-lock MP support, ELF executables
 517 FreeBSD 3.0             1998-10-16 [FBD]
 518                                 FreeBSD-3.0 is a snapshot from -current,
 519                                 while 3.1 and 3.2 are from 3.x-stable which
 520                                 was branched quite some time after 3.0-release
 521 FreeBSD 2.2.8           1998-11-29 [FBD]
 522 OpenBSD 2.4             1998-12-01 [OBD]
 523 NetBSD 1.3.3            1998-12-23 [NBD] (patch release)
 524 FreeBSD 3.1             1999-02-15 [FBD]
 525 BSD/OS 4.0.1            1999-03-xx [BSDI]
 526 NetBSD 1.4              1999-05-12 [NBD]
 527 FreeBSD 3.2             1999-05-17 [FBD]
 528 OpenBSD 2.5             1999-05-19 [OBD]
 529 NetBSD 1.4.1            1999-08-26 [NBD] (patch release)
 530 FreeBSD 3.3             1999-09-17 [FBD]
 531 OpenBSD 2.6             1999-12-01 [OBD]
 532 FreeBSD 3.4             1999-12-20 [FBD]
 533 BSD/OS 4.1              1999-12-xx [BSDI]
 534 FreeBSD 4.0             2000-03-13 [FBD]
 535 NetBSD 1.4.2            2000-03-19 [NBD] (patch release)
 536 OpenBSD 2.7             2000-06-15 [OBD]
 537 FreeBSD 3.5             2000-06-24 [FBD]
 538 FreeBSD 4.1             2000-07-27 [FBD]
 539 FreeBSD 3.5.1           2000-07-28 [FBD]
 540 FreeBSD 4.1.1           2000-09-25 [FBD] (a network-only patch release)
 541 FreeBSD 4.2             2000-11-21 [FBD]
 542 NetBSD 1.4.3            2000-11-25 [NBD] (patch release)
 543 BSD/OS 4.2              2000-11-29 [BSDI]
 544 OpenBSD 2.8             2000-12-01 [OBD]
 545 NetBSD 1.5              2000-12-06 [NBD]
 546 Mac OS X 10.0           2001-03-24 [APL]
 547 FreeBSD 4.3             2001-04-20 [FBD]
 548 OpenBSD 2.9             2001-06-01 [OBD]
 549 NetBSD 1.5.1            2001-07-11 [NBD] (patch release)
 550 NetBSD 1.5.2            2001-09-13 [NBD] (patch release)
 551 FreeBSD 4.4             2001-09-18 [FBD]
 552 Mac OS X 10.1           2001-09-29 [APL]
 553 OpenBSD 3.0             2001-12-01 [OBD]
 554 FreeBSD 4.5             2002-01-29 [FBD]
 555 BSD/OS 4.3              2002-03-14 [WRS]
 556 OpenBSD 3.1             2002-05-19 [OBD]
 557 FreeBSD 4.6             2002-06-15 [FBD]
 558 NetBSD 1.5.3            2002-07-22 [NBD] (patch release)
 559 FreeBSD 4.6.2           2002-08-15 [FBD] (patch release)
 560 Mac OS X 10.2           2002-08-23 [APL]
 561 NetBSD 1.6              2002-09-14 [NBD]
 562 FreeBSD 4.7             2002-10-08 [FBD]
 563 OpenBSD 3.2             2002-11-01 [OBD]
 564 FreeBSD 5.0             2003-01-17 [FBD]
 565                                 FreeBSD 5.0 is a separate branch off of
 566                                 -current, similar to 3.0.
 567 FreeBSD 4.8             2003-04-03 [FBD]
 568 NetBSD 1.6.1            2003-04-21 [NBD] (patch release)
 569 OpenBSD 3.3             2003-05-01 [OBD]
 570 BSD/OS 5.0              2003-05-?? [WRS]
 571 FreeBSD 5.1             2003-06-09 [FBD]
 572 Mac OS X 10.3           2003-10-24 [APL]
 573 FreeBSD 4.9             2003-10-28 [FBD]
 574 BSD/OS 5.1 ISE          2003-10-?? [WRS] (final version)
 575 OpenBSD 3.4             2003-11-01 [OBD]
 576 FreeBSD 5.2             2004-01-12 [FBD]
 577 FreeBSD 5.2.1           2004-02-22 [FBD] (patch release)
 578 NetBSD 1.6.2            2004-03-01 [NBD] (patch release)
 579 OpenBSD 3.5             2004-04-01 [OBD]
 580 FreeBSD 4.10            2004-05-27 [FBD]
 581 DragonFly 1.0           2004-07-12 [DFB]
 582 OpenBSD 3.6             2004-10-29 [OBD]
 583 FreeBSD 5.3             2004-11-06 [FBD]
 584 NetBSD 2.0              2004-12-09 [NBD]
 585 FreeBSD 4.11            2005-01-25 [FBD]
 586 DragonFly 1.2.0         2005-04-08 [DFB]
 587 NetBSD 2.0.2            2005-04-14 [NBD] (security/critical release)
 588 Mac OS X 10.4           2005-04-29 [APL]
 589 FreeBSD 5.4             2005-05-09 [FBD]
 590 OpenBSD 3.7             2005-05-19 [OBD]
 591 NetBSD 2.0.3            2005-10-31 [NBD] (security/critical release)
 592 OpenBSD 3.8             2005-11-01 [OBD]
 593 FreeBSD 6.0             2005-11-01 [FBD]
 594 NetBSD 2.1              2005-11-02 [NBD]
 595 NetBSD 3.0              2005-12-23 [NBD]
 596 DragonFly 1.4.0         2006-01-08 [DFB]
 597 FreeBSD 2.2.9           2006-04-01 [FBD]
 598 OpenBSD 3.9             2006-05-01 [OBD]
 599 FreeBSD 6.1             2006-05-08 [FBD]
 600 FreeBSD 5.5             2006-05-25 [FBD]
 601 NetBSD 3.0.1            2006-07-24 [NBD] (security/critical release)
 602 DragonFly 1.6.0         2006-07-24 [DFB]
 603 OpenBSD 4.0             2006-11-01 [OBD]
 604 NetBSD 3.0.2            2006-11-04 [NBD] (security/critical release)
 605 NetBSD 3.1              2006-11-04 [NBD]
 606 FreeBSD 6.2             2007-01-15 [FBD]
 607 DragonFly 1.8.0         2007-01-30 [DFB]
 608 OpenBSD 4.1             2007-05-01 [OBD]
 609 DragonFly 1.10.0        2007-08-06 [DFB]
 610 Mac OS X 10.5           2007-10-26 [APL]
 611 OpenBSD 4.2             2007-11-01 [OBD]
 612 NetBSD 4.0              2007-12-19 [NBD]
 613 FreeBSD 6.3             2008-01-18 [FBD]
 614 DragonFly 1.12.0        2008-02-26 [DFB]
 615 FreeBSD 7.0             2008-02-27 [FBD]
 616 OpenBSD 4.3             2008-05-01 [OBD]
 617 DragonFly 2.0.0         2008-07-21 [DFB]
 618 OpenBSD 4.4             2008-11-01 [OBD]
 619 FreeBSD 6.4             2008-11-28 [FBD]
 620 FreeBSD 7.1             2009-01-04 [FBD]
 621 DragonFly 2.2.0         2009-02-17 [DFB]
 622 NetBSD 5.0              2009-04-29 [NBD]
 623 OpenBSD 4.5             2009-05-01 [OBD]
 624 FreeBSD 7.2             2009-05-04 [FBD]
 625 Mac OS X 10.6           2009-06-08 [APL]
 626 NetBSD 5.0.1            2009-08-02 [NBD] (security/critical release)
 627 DragonFly 2.4.0         2009-09-16 [DFB]
 628 OpenBSD 4.6             2009-10-18 [OBD]
 629 FreeBSD 8.0             2009-11-26 [FBD]
 630 NetBSD 5.0.2            2010-02-12 [NBD] (security/critical release)
 631 FreeBSD 7.3             2010-03-23 [FBD]
 632 DragonFly 2.6.0         2010-03-28 [DFB]
 633 OpenBSD 4.7             2010-05-19 [OBD]
 634 FreeBSD 8.1             2010-07-24 [FBD]
 635 DragonFly 2.8.2         2010-10-30 [DFB]
 636 OpenBSD 4.8             2010-11-01 [OBD]
 637 NetBSD 5.1              2010-11-19 [NBD]
 638 FreeBSD 7.4             2011-02-24 [FBD]
 639 FreeBSD 8.2             2011-02-24 [FBD]
 640 DragonFly 2.10.1        2011-04-26 [DFB]
 641 OpenBSD 4.9             2011-05-01 [OBD]
 642 Mac OS X 10.7           2011-07-20 [APL]
 643 OpenBSD 5.0             2011-11-01 [OBD]
 644 FreeBSD 9.0             2012-01-12 [FBD]
 645 NetBSD 5.1.2            2012-02-02 [NBD] (security/critical release)
 646 DragonFly 3.0.1         2012-02-21 [DFB]
 647 FreeBSD 8.3             2012-04-18 [FBD]
 648 OpenBSD 5.1             2012-05-01 [OBD]
 649 Mac OS X 10.8           2012-07-25 [APL]
 650 NetBSD 6.0              2012-10-17 [NBD]
 651 OpenBSD 5.2             2012-11-01 [OBD]
 652 DragonFly 3.2.1         2012-11-02 [DFB]
 653 NetBSD 5.2              2012-12-03 [NBD]
 654 NetBSD 6.0.1            2012-12-26 [NBD] (security/critical release)
 655 FreeBSD 9.1             2012-12-30 [FBD]
 656 DragonFly 3.4.1         2013-04-29 [DFB]
 657 OpenBSD 5.3             2013-05-01 [OBD]
 658 NetBSD 6.0.2            2013-05-18 [NBD] (security/critical release)
 659 NetBSD 6.1              2013-05-18 [NBD]
 660 FreeBSD 8.4             2013-06-07 [FBD]
 661 NetBSD 6.1.1            2013-08-22 [NBD]
 662 NetBSD 5.1.3            2013-09-29 [NBD]
 663 NetBSD 5.2.1            2013-09-29 [NBD]
 664 FreeBSD 9.2             2013-09-30 [FBD]
 665 NetBSD 6.0.3            2013-09-30 [NBD]
 666 NetBSD 6.1.2            2013-09-30 [NBD]
 667 Mac OS X 10.9           2013-10-22 [APL]
 668 OpenBSD 5.4             2013-11-01 [OBD]
 669 DragonFly 3.6.0         2013-11-25 [DFB]
 670 FreeBSD 10.0            2014-01-20 [FBD]
 671 NetBSD 5.1.4            2014-01-25 [NBD]
 672 NetBSD 5.2.2            2014-01-25 [NBD]
 673 NetBSD 6.0.4            2014-01-25 [NBD]
 674 NetBSD 6.1.3            2014-01-25 [NBD]
 675 DragonFly 3.6.1         2014-02-22 [DFB]
 676 DragonFly 3.6.2         2014-04-10 [DFB]
 677 NetBSD 6.0.5            2014-04-12 [NDB]
 678 NetBSD 6.1.4            2014-04-12 [NDB]
 679 OpenBSD 5.5             2014-05-01 [OBD]
 680 DragonFly 3.8.0         2014-06-04 [DFB]
 681 DragonFly 3.8.1         2014-06-16 [DFB]
 682 DragonFly 3.6.3         2014-06-17 [DFB]
 683 FreeBSD 9.3             2014-07-05 [FBD]
 684 DragonFly 3.8.2         2014-08-08 [DFB]
 685 NetBSD 6.1.5            2014-09-22 [NBD]
 686 Mac OS X 10.10          2014-10-16 [APL]
 687 OpenBSD 5.6             2014-11-01 [OBD]
 688 FreeBSD 10.1            2014-11-14 [FBD]
 689 DragonFly 4.0.1         2014-11-25 [DFB]
 690 DragonFly 4.0.2         2015-01-07 [DFB]
 691 DragonFly 4.0.3         2015-01-21 [DFB]
 692 DragonFly 4.0.4         2015-03-09 [DFB]
 693 DragonFly 4.0.5         2015-03-23 [DFB]
 694 OpenBSD 5.7             2015-05-01 [OBD]
 695 DragonFly 4.2.0         2015-06-29 [DFB]
 696 FreeBSD 10.2            2015-08-13 [FBD]
 697 NetBSD 7.0              2015-09-25 [NBD]
 698 OS X 10.11              2015-09-30 [APL]
 699 OpenBSD 5.8             2015-10-18 [OBD]
 700 DragonFly 4.4.1         2015-12-07 [DFB]
 701 OpenBSD 5.9             2016-03-29 [OBD]
 702 FreeBSD 10.3            2016-04-04 [FBD]
 703 NetBSD 7.0.1            2016-05-22 [NBD]
 704 DragonFly 4.6.0         2016-08-02 [DFB]
 705 OpenBSD 6.0             2016-09-01 [OBD]
 706 FreeBSD 11.0            2016-10-10 [FBD]
 707
 708 Bibliography
 709 ------------------------
 710
 711 Leffler, Samuel J., Marshall Kirk McKusick, Michael J Karels and John
 712 Quarterman. The Design and Implementation of the 4.3BSD UNIX Operating
 713 System. Reading, Mass. Addison-Wesley, 1989. ISBN 0-201-06196-1
 714
 715 Salus, Peter H. A quarter century of UNIX. Addison-Wesley Publishing
 716 Company, Inc., 1994. ISBN 0-201-54777-5
 717
 718 McKusick, Marshall Kirk, Keith Bostic, Michael J Karels, and John
 719 Quarterman. The Design and Implementation of the 4.4BSD Operating
 720 System. Reading, Mass. Addison-Wesley, 1996. ISBN 0-201-54979-4
 721
 722 McKusick, Marshall Kirk, George Neville-Neil. The Design and
 723 Implementation of the FreeBSD Operating System.
 724 Addison-Wesley Professional, Published: Aug 2, 2004. ISBN 0-201-70245-2
 725
 726 McKusick, Marshall Kirk, George Neville-Neil, Robert Watson. The
 727 Design and Implementation of the FreeBSD Operating System, 2nd Edition.
 728 Pearson Education, Inc., 2014. ISBN 0-321-96897-2
 729
 730 Doug McIlroy. Research Unix Reader.
 731
 732 Michael G. Brown. The Role of BSD in the Development of Unix.
 733 Presented to the Tasmanian Unix Special Interest Group of the
 734 Australian Computer Society, Hobart, August 1993.
 735
 736 Peter H. Salus. Unix at 25. Byte Magazine, October 1994.
 737 URL: http://www.byte.com/art/9410/sec8/art3.htm
 738
 739 Andreas Klemm, Lars Köller. If you're going to San Francisco ...
 740 Die freien BSD-Varianten von Unix. c't April 1997, page 368ff.
 741
 742 BSD Release Announcements collection.
 743 URL: http://www.FreeBSD.org/releases/
 744
 745 BSD Hypertext Man Pages
 746 URL: http://www.FreeBSD.org/cgi/man.cgi
 747
 748 UNIX history graphing project
 749 URL: http://minnie.tuhs.org/Unix_History/index.html
 750
 751 UNIX history
 752 URL: http://www.levenez.com/unix/
 753
 754 James Howard: The BSD Family Tree
 755 URL: http://ezine.daemonnews.org/200104/bsd_family.html
 756 ("what are the differences between FreeBSD, NetBSD, and OpenBSD?")
 757
 758
 759 Acknowledgments
 760 ---------------
 761
 762 Josh Gilliam for suggestions, bug fixes, and finding very old
 763 original BSD announcements from Usenet or tapes.
 764
 765 Steven M. Schultz for providing 2.8BSD, 2.10BSD, 2.11BSD manual pages.
 766
 767 --
 768 Copyright (c) 1997-2012 Wolfram Schneider <wosch@FreeBSD.ORG>
 769 URL: http://svnweb.freebsd.org/base/head/share/misc/bsd-family-tree
 770
 771 $FreeBSD$