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  |                    |      |                 |                       |
 350  |                    |      |                 |                       |
 351  *--FreeBSD         macOS    |            OpenBSD 6.0                  |
 352  |   11.0           10.12    |                 |                       |
 353  |     |              |   NetBSD 7.1           |                       |
 354  |     |              |      |                 |               DragonFly 4.8.0
 355  |     |              |      |            OpenBSD 6.1                  |
 356  |  FreeBSD           |      |                 |                       |
 357  |   11.1             |      |                 |                       |
 358  |                    |      |                 |                       |
 359 FreeBSD 12 -current   |  NetBSD -current  OpenBSD -current    DragonFly -current
 360  |                    |      |                 |                       |
 361  v                    v      v                 v                       v
 362
 363 Time
 364 ----------------
 365
 366 Time tolerance +/- 6 months, depending on which book/article you read; if it
 367 was the announcement in Usenet or if it was available as tape.
 368
 369 [44B] McKusick, Marshall Kirk, Keith Bostic, Michael J Karels,
 370         and John Quarterman. The Design and Implementation of
 371         the 4.4BSD Operating System.
 372 [APL] Apple website [http://www.apple.com/macosx/]
 373 [BSDI] Berkeley Software Design, Inc.
 374 [DFB] DragonFlyBSD Project, The.
 375 [DOC] README, COPYRIGHT on tape.
 376 [FBD] FreeBSD Project, The.
 377 [KB]  Keith Bostic. BSD2.10 available from Usenix. comp.unix.sources,
 378         Volume 11, Info 4, April, 1987.
 379 [KKK] Mike Karels, Kirk McKusick, and Keith Bostic. tahoe announcement.
 380         comp.bugs.4bsd.ucb-fixes, June 15, 1988.
 381 [KSJ] Michael J. Karels, Carl F. Smith, and William F. Jolitz.
 382         Changes in the Kernel in 2.9BSD. Second Berkeley Software
 383         Distribution UNIX Version 2.9, July, 1983.
 384 [NBD] NetBSD Project, The.
 385 [OBD] OpenBSD Project, The.
 386 [QCU] Salus, Peter H. A quarter century of UNIX.
 387 [SMS] Steven M. Schultz. 2.11BSD, UNIX for the PDP-11.
 388 [TUHS] The Unix Historical Society.  http://minnie.tuhs.org/Unix_History/.
 389 [USE] Usenet announcement.
 390 [WRS] Wind River Systems, Inc.
 391 [dmr] Dennis Ritchie, via E-Mail
 392
 393 Multics                 1965
 394 UNIX                    Summer 1969
 395                                 DEC PDP-7
 396 First   Edition         1971-11-03 [QCU]
 397                                 DEC PDP-11/20, Assembler
 398 Second  Edition         1972-06-12 [QCU]
 399                                 10 UNIX installations
 400 Third   Edition         1973-02-xx [QCU]
 401                                 Pipes, 16 installations
 402 Fourth  Edition         1973-11-xx [QCU]
 403                                 rewriting in C effected,
 404                                 above 30 installations
 405 Fifth   Edition         1974-06-xx [QCU]
 406                                 above 50 installations
 407 Sixth   Edition         1975-05-xx [QCU]
 408                                 port to DEC Vax
 409 Seventh Edition         1979-01-xx [QCU]
 410                                 first portable UNIX
 411 Eighth  Edition         1985-02-xx [QCU]
 412                                 VAX 11/750, VAX 11/780 [dmr]
 413                                 descended from 4.1c BSD [dmr]
 414                                 descended from 4.1 BSD [44B]
 415                         scooping-out and replacement of the character-device
 416                         and networking part by the streams mechanism
 417
 418 Ninth   Edition         1986-09-xx [QCU]
 419 Tenth   Edition         1989-10-xx [QCU]
 420
 421 1BSD                    late 1977
 422                         1978-03-09 [QCU]
 423                                 PDP-11, Pascal, ex(1)
 424                                 30 free copies of 1BSD sent out
 425                                 35 tapes sold for 50 USD [QCU]
 426 2BSD                    mid 1978 [QCU] 1979-05-10 [TUHS]
 427                                 75 2BSD tapes shipped
 428 2.79BSD                 1980-04-xx [TUHS]
 429 2.8BSD                  1981-07-xx [KSJ]
 430
 431 2.8.1BSD                1982-01-xx [QCU]
 432                                 set of performance improvements
 433 2.9BSD                  1983-07-xx [KSJ]
 434 2.9.1BSD                1983-11-xx [TUHS]
 435 2.9BSD-Seismo           1985-08-xx [SMS]
 436 2.10BSD                 1987-04-xx [KKK]
 437 2.10.1BSD               1989-01-xx [SMS]
 438 2.11BSD                 1992-02-xx [SMS]
 439 2.11BSD rev #430        1999-12-13 [SMS]
 440
 441 32V                     1978-1[01]-xx [QCU]
 442 3BSD                    late 1979 [QCU] March 1980 [TUHS]
 443                                 virtual memory, page replacement,
 444                                 demand paging
 445 4.0BSD                  1980-10-xx
 446 4.1BSD                  1981-07-08 [DOC]
 447 4.1aBSD                 1982-04-xx
 448                                 alpha release, 100 sites, networking [44B]
 449 4.1bBSD                         internal release, fast filesystem [44B]
 450 4.1cBSD                 late 1982
 451                                 beta release, IPC [44B]
 452 4.2BSD                  1983-09-xx [QCU]
 453                         1983-08-03 [DOC]
 454 4.3BSD                  1986-06-xx [QCU]
 455                         1986-04-05 [KB], [DOC]
 456 4.3BSD Tahoe            1988-06-15 [QCU], [DOC]
 457 4.3BSD NET/1            1988-11-xx [QCU]
 458                         1989-01-01 [DOC]
 459 4.3BSD Reno             1990-06-29 [QCU], [DOC]
 460 4.3BSD NET/2            1991-06-28 [QCU], [DOC]
 461
 462 BSD/386 ALPHA           1991-12-xx [BSDI]
 463                                 first code released to people outside BSDI
 464 386BSD 0.0              1992-02-xx [DOC]
 465 BSD/386 0.3.1           1992-04-xx [BSDI] first ext. beta; B customers
 466 BSD/386 0.3.3           1992-06-xx [BSDI] first CDROM version
 467 386BSD 0.1              1992-07-28 [DOC]
 468 4.4BSD Alpha            1992-07-07
 469 BSD/386 0.9.3           1992-10-xx [BSDI]
 470                                 first external gamma; G customers
 471 BSD/386 0.9.4           1992-12-xx [BSDI]
 472                                 would have been 1.0 except for request
 473                                 for preliminary injunction
 474 BSD/386 1.0             1993-03-xx [BSDI]
 475                                 injunction denied; first official release
 476 NetBSD 0.8              1993-04-20 [NBD]
 477 4.4BSD                  1993-06-01 [USE]
 478 NetBSD 0.9              1993-08-23 [NBD]
 479 FreeBSD 1.0             1993-11-01 [FBD]
 480 FreeBSD 1.0.2           1993-11-14 [FBD]
 481                                 supersedes 1.0 13 days after release.
 482 BSD/386 1.1             1994-02-xx [BSDI]
 483 4.4BSD Lite             1994-03-01 [USE]
 484 FreeBSD 1.1             1994-05-07 [FBD]
 485 FreeBSD 1.1.5           1994-06-30 [FBD]
 486 FreeBSD 1.1.5.1         1994-07-05 [FBD]
 487                                 supersedes 1.1.5 5 days after release.
 488 NetBSD 1.0              1994-10-26 [NBD]
 489 386BSD 1.0              1994-11-12 [USE]
 490 FreeBSD 2.0             1994-11-23 [FBD]
 491 BSD/OS 2.0              1995-01-xx [BSDI] 4.4 lite based
 492 FreeBSD 2.0.5           1995-06-10 [FBD]
 493 BSD/OS 2.0.1            1995-06-xx [BSDI]
 494 4.4BSD Lite Release 2   1995-06-xx [44B]
 495                                 the true final distribution from the CSRG
 496 FreeBSD 2.1.0           1995-11-19 [FBD]
 497 NetBSD 1.1              1995-11-26 [NBD]
 498 BSD/OS 2.1              1996-01-xx [BSDI]
 499 FreeBSD 2.1.5           1996-07-14 [FBD]
 500 NetBSD 1.2              1996-10-04 [NBD]
 501 OpenBSD 2.0             1996-10-18 [OBD]
 502 FreeBSD 2.1.6           1996-11-16 [FBD]
 503 FreeBSD 2.1.6.1         1996-11-25 [FBD] (sendmail security release)
 504 Rhapsody                1997-xx-xx
 505 FreeBSD 2.1.7           1997-02-20 [FBD]
 506 BSD/OS 3.0              1997-02-xx [BSDI] 4.4 lite2 based
 507 FreeBSD 2.2.0           1997-03-16 [FBD]
 508 FreeBSD 2.2.1           1997-03-25 [FBD]
 509 FreeBSD 2.2.2           1997-05-16 [FBD]
 510 NetBSD 1.2.1            1997-05-20 [NBD] (patch release)
 511 OpenBSD 2.1             1997-06-01 [OBD]
 512 FreeBSD 2.2.5           1997-10-22 [FBD]
 513 OpenBSD 2.2             1997-12-01 [OBD]
 514 NetBSD 1.3              1998-01-04 [NBD]
 515 FreeBSD 2.2.6           1998-03-25 [FBD]
 516 NetBSD 1.3.1            1998-03-09 [NBD] (patch release)
 517 BSD/OS 3.1              1998-03-xx [BSDI]
 518 OpenBSD 2.3             1998-05-19 [OBD]
 519 NetBSD 1.3.2            1998-05-29 [NBD] (patch release)
 520 FreeBSD 2.2.7           1998-07-22 [FBD]
 521 BSD/OS 4.0              1998-08-xx [BSDI]
 522                                 2-lock MP support, ELF executables
 523 FreeBSD 3.0             1998-10-16 [FBD]
 524                                 FreeBSD-3.0 is a snapshot from -current,
 525                                 while 3.1 and 3.2 are from 3.x-stable which
 526                                 was branched quite some time after 3.0-release
 527 FreeBSD 2.2.8           1998-11-29 [FBD]
 528 OpenBSD 2.4             1998-12-01 [OBD]
 529 NetBSD 1.3.3            1998-12-23 [NBD] (patch release)
 530 FreeBSD 3.1             1999-02-15 [FBD]
 531 BSD/OS 4.0.1            1999-03-xx [BSDI]
 532 NetBSD 1.4              1999-05-12 [NBD]
 533 FreeBSD 3.2             1999-05-17 [FBD]
 534 OpenBSD 2.5             1999-05-19 [OBD]
 535 NetBSD 1.4.1            1999-08-26 [NBD] (patch release)
 536 FreeBSD 3.3             1999-09-17 [FBD]
 537 OpenBSD 2.6             1999-12-01 [OBD]
 538 FreeBSD 3.4             1999-12-20 [FBD]
 539 BSD/OS 4.1              1999-12-xx [BSDI]
 540 FreeBSD 4.0             2000-03-13 [FBD]
 541 NetBSD 1.4.2            2000-03-19 [NBD] (patch release)
 542 OpenBSD 2.7             2000-06-15 [OBD]
 543 FreeBSD 3.5             2000-06-24 [FBD]
 544 FreeBSD 4.1             2000-07-27 [FBD]
 545 FreeBSD 3.5.1           2000-07-28 [FBD]
 546 FreeBSD 4.1.1           2000-09-25 [FBD] (a network-only patch release)
 547 FreeBSD 4.2             2000-11-21 [FBD]
 548 NetBSD 1.4.3            2000-11-25 [NBD] (patch release)
 549 BSD/OS 4.2              2000-11-29 [BSDI]
 550 OpenBSD 2.8             2000-12-01 [OBD]
 551 NetBSD 1.5              2000-12-06 [NBD]
 552 Mac OS X 10.0           2001-03-24 [APL]
 553 FreeBSD 4.3             2001-04-20 [FBD]
 554 OpenBSD 2.9             2001-06-01 [OBD]
 555 NetBSD 1.5.1            2001-07-11 [NBD] (patch release)
 556 NetBSD 1.5.2            2001-09-13 [NBD] (patch release)
 557 FreeBSD 4.4             2001-09-18 [FBD]
 558 Mac OS X 10.1           2001-09-29 [APL]
 559 OpenBSD 3.0             2001-12-01 [OBD]
 560 FreeBSD 4.5             2002-01-29 [FBD]
 561 BSD/OS 4.3              2002-03-14 [WRS]
 562 OpenBSD 3.1             2002-05-19 [OBD]
 563 FreeBSD 4.6             2002-06-15 [FBD]
 564 NetBSD 1.5.3            2002-07-22 [NBD] (patch release)
 565 FreeBSD 4.6.2           2002-08-15 [FBD] (patch release)
 566 Mac OS X 10.2           2002-08-23 [APL]
 567 NetBSD 1.6              2002-09-14 [NBD]
 568 FreeBSD 4.7             2002-10-08 [FBD]
 569 OpenBSD 3.2             2002-11-01 [OBD]
 570 FreeBSD 5.0             2003-01-17 [FBD]
 571                                 FreeBSD 5.0 is a separate branch off of
 572                                 -current, similar to 3.0.
 573 FreeBSD 4.8             2003-04-03 [FBD]
 574 NetBSD 1.6.1            2003-04-21 [NBD] (patch release)
 575 OpenBSD 3.3             2003-05-01 [OBD]
 576 BSD/OS 5.0              2003-05-?? [WRS]
 577 FreeBSD 5.1             2003-06-09 [FBD]
 578 Mac OS X 10.3           2003-10-24 [APL]
 579 FreeBSD 4.9             2003-10-28 [FBD]
 580 BSD/OS 5.1 ISE          2003-10-?? [WRS] (final version)
 581 OpenBSD 3.4             2003-11-01 [OBD]
 582 FreeBSD 5.2             2004-01-12 [FBD]
 583 FreeBSD 5.2.1           2004-02-22 [FBD] (patch release)
 584 NetBSD 1.6.2            2004-03-01 [NBD] (patch release)
 585 OpenBSD 3.5             2004-04-01 [OBD]
 586 FreeBSD 4.10            2004-05-27 [FBD]
 587 DragonFly 1.0           2004-07-12 [DFB]
 588 OpenBSD 3.6             2004-10-29 [OBD]
 589 FreeBSD 5.3             2004-11-06 [FBD]
 590 NetBSD 2.0              2004-12-09 [NBD]
 591 FreeBSD 4.11            2005-01-25 [FBD]
 592 DragonFly 1.2.0         2005-04-08 [DFB]
 593 NetBSD 2.0.2            2005-04-14 [NBD] (security/critical release)
 594 Mac OS X 10.4           2005-04-29 [APL]
 595 FreeBSD 5.4             2005-05-09 [FBD]
 596 OpenBSD 3.7             2005-05-19 [OBD]
 597 NetBSD 2.0.3            2005-10-31 [NBD] (security/critical release)
 598 OpenBSD 3.8             2005-11-01 [OBD]
 599 FreeBSD 6.0             2005-11-01 [FBD]
 600 NetBSD 2.1              2005-11-02 [NBD]
 601 NetBSD 3.0              2005-12-23 [NBD]
 602 DragonFly 1.4.0         2006-01-08 [DFB]
 603 FreeBSD 2.2.9           2006-04-01 [FBD]
 604 OpenBSD 3.9             2006-05-01 [OBD]
 605 FreeBSD 6.1             2006-05-08 [FBD]
 606 FreeBSD 5.5             2006-05-25 [FBD]
 607 NetBSD 3.0.1            2006-07-24 [NBD] (security/critical release)
 608 DragonFly 1.6.0         2006-07-24 [DFB]
 609 OpenBSD 4.0             2006-11-01 [OBD]
 610 NetBSD 3.0.2            2006-11-04 [NBD] (security/critical release)
 611 NetBSD 3.1              2006-11-04 [NBD]
 612 FreeBSD 6.2             2007-01-15 [FBD]
 613 DragonFly 1.8.0         2007-01-30 [DFB]
 614 OpenBSD 4.1             2007-05-01 [OBD]
 615 DragonFly 1.10.0        2007-08-06 [DFB]
 616 Mac OS X 10.5           2007-10-26 [APL]
 617 OpenBSD 4.2             2007-11-01 [OBD]
 618 NetBSD 4.0              2007-12-19 [NBD]
 619 FreeBSD 6.3             2008-01-18 [FBD]
 620 DragonFly 1.12.0        2008-02-26 [DFB]
 621 FreeBSD 7.0             2008-02-27 [FBD]
 622 OpenBSD 4.3             2008-05-01 [OBD]
 623 DragonFly 2.0.0         2008-07-21 [DFB]
 624 OpenBSD 4.4             2008-11-01 [OBD]
 625 FreeBSD 6.4             2008-11-28 [FBD]
 626 FreeBSD 7.1             2009-01-04 [FBD]
 627 DragonFly 2.2.0         2009-02-17 [DFB]
 628 NetBSD 5.0              2009-04-29 [NBD]
 629 OpenBSD 4.5             2009-05-01 [OBD]
 630 FreeBSD 7.2             2009-05-04 [FBD]
 631 Mac OS X 10.6           2009-06-08 [APL]
 632 NetBSD 5.0.1            2009-08-02 [NBD] (security/critical release)
 633 DragonFly 2.4.0         2009-09-16 [DFB]
 634 OpenBSD 4.6             2009-10-18 [OBD]
 635 FreeBSD 8.0             2009-11-26 [FBD]
 636 NetBSD 5.0.2            2010-02-12 [NBD] (security/critical release)
 637 FreeBSD 7.3             2010-03-23 [FBD]
 638 DragonFly 2.6.0         2010-03-28 [DFB]
 639 OpenBSD 4.7             2010-05-19 [OBD]
 640 FreeBSD 8.1             2010-07-24 [FBD]
 641 DragonFly 2.8.2         2010-10-30 [DFB]
 642 OpenBSD 4.8             2010-11-01 [OBD]
 643 NetBSD 5.1              2010-11-19 [NBD]
 644 FreeBSD 7.4             2011-02-24 [FBD]
 645 FreeBSD 8.2             2011-02-24 [FBD]
 646 DragonFly 2.10.1        2011-04-26 [DFB]
 647 OpenBSD 4.9             2011-05-01 [OBD]
 648 Mac OS X 10.7           2011-07-20 [APL]
 649 OpenBSD 5.0             2011-11-01 [OBD]
 650 FreeBSD 9.0             2012-01-12 [FBD]
 651 NetBSD 5.1.2            2012-02-02 [NBD] (security/critical release)
 652 DragonFly 3.0.1         2012-02-21 [DFB]
 653 FreeBSD 8.3             2012-04-18 [FBD]
 654 OpenBSD 5.1             2012-05-01 [OBD]
 655 Mac OS X 10.8           2012-07-25 [APL]
 656 NetBSD 6.0              2012-10-17 [NBD]
 657 OpenBSD 5.2             2012-11-01 [OBD]
 658 DragonFly 3.2.1         2012-11-02 [DFB]
 659 NetBSD 5.2              2012-12-03 [NBD]
 660 NetBSD 6.0.1            2012-12-26 [NBD] (security/critical release)
 661 FreeBSD 9.1             2012-12-30 [FBD]
 662 DragonFly 3.4.1         2013-04-29 [DFB]
 663 OpenBSD 5.3             2013-05-01 [OBD]
 664 NetBSD 6.0.2            2013-05-18 [NBD] (security/critical release)
 665 NetBSD 6.1              2013-05-18 [NBD]
 666 FreeBSD 8.4             2013-06-07 [FBD]
 667 NetBSD 6.1.1            2013-08-22 [NBD]
 668 NetBSD 5.1.3            2013-09-29 [NBD]
 669 NetBSD 5.2.1            2013-09-29 [NBD]
 670 FreeBSD 9.2             2013-09-30 [FBD]
 671 NetBSD 6.0.3            2013-09-30 [NBD]
 672 NetBSD 6.1.2            2013-09-30 [NBD]
 673 Mac OS X 10.9           2013-10-22 [APL]
 674 OpenBSD 5.4             2013-11-01 [OBD]
 675 DragonFly 3.6.0         2013-11-25 [DFB]
 676 FreeBSD 10.0            2014-01-20 [FBD]
 677 NetBSD 5.1.4            2014-01-25 [NBD]
 678 NetBSD 5.2.2            2014-01-25 [NBD]
 679 NetBSD 6.0.4            2014-01-25 [NBD]
 680 NetBSD 6.1.3            2014-01-25 [NBD]
 681 DragonFly 3.6.1         2014-02-22 [DFB]
 682 DragonFly 3.6.2         2014-04-10 [DFB]
 683 NetBSD 6.0.5            2014-04-12 [NDB]
 684 NetBSD 6.1.4            2014-04-12 [NDB]
 685 OpenBSD 5.5             2014-05-01 [OBD]
 686 DragonFly 3.8.0         2014-06-04 [DFB]
 687 DragonFly 3.8.1         2014-06-16 [DFB]
 688 DragonFly 3.6.3         2014-06-17 [DFB]
 689 FreeBSD 9.3             2014-07-05 [FBD]
 690 DragonFly 3.8.2         2014-08-08 [DFB]
 691 NetBSD 6.1.5            2014-09-22 [NBD]
 692 Mac OS X 10.10          2014-10-16 [APL]
 693 OpenBSD 5.6             2014-11-01 [OBD]
 694 FreeBSD 10.1            2014-11-14 [FBD]
 695 DragonFly 4.0.1         2014-11-25 [DFB]
 696 DragonFly 4.0.2         2015-01-07 [DFB]
 697 DragonFly 4.0.3         2015-01-21 [DFB]
 698 DragonFly 4.0.4         2015-03-09 [DFB]
 699 DragonFly 4.0.5         2015-03-23 [DFB]
 700 OpenBSD 5.7             2015-05-01 [OBD]
 701 DragonFly 4.2.0         2015-06-29 [DFB]
 702 FreeBSD 10.2            2015-08-13 [FBD]
 703 NetBSD 7.0              2015-09-25 [NBD]
 704 OS X 10.11              2015-09-30 [APL]
 705 OpenBSD 5.8             2015-10-18 [OBD]
 706 DragonFly 4.4.1         2015-12-07 [DFB]
 707 OpenBSD 5.9             2016-03-29 [OBD]
 708 FreeBSD 10.3            2016-04-04 [FBD]
 709 NetBSD 7.0.1            2016-05-22 [NBD]
 710 DragonFly 4.6.0         2016-08-02 [DFB]
 711 OpenBSD 6.0             2016-09-01 [OBD]
 712 macOS 10.12             2016-09-20 [APL]
 713 FreeBSD 11.0            2016-10-10 [FBD]
 714 NetBSD 7.1              2017-03-11 [NBD]
 715 DragonFly 4.8.0         2017-03-27 [DFB]
 716 OpenBSD 6.1             2017-04-11 [OBD]
 717 FreeBSD 11.1            2017-07-26 [FBD]
 718
 719 Bibliography
 720 ------------------------
 721
 722 Leffler, Samuel J., Marshall Kirk McKusick, Michael J Karels and John
 723 Quarterman. The Design and Implementation of the 4.3BSD UNIX Operating
 724 System. Reading, Mass. Addison-Wesley, 1989. ISBN 0-201-06196-1
 725
 726 Salus, Peter H. A quarter century of UNIX. Addison-Wesley Publishing
 727 Company, Inc., 1994. ISBN 0-201-54777-5
 728
 729 McKusick, Marshall Kirk, Keith Bostic, Michael J Karels, and John
 730 Quarterman. The Design and Implementation of the 4.4BSD Operating
 731 System. Reading, Mass. Addison-Wesley, 1996. ISBN 0-201-54979-4
 732
 733 McKusick, Marshall Kirk, George Neville-Neil. The Design and
 734 Implementation of the FreeBSD Operating System.
 735 Addison-Wesley Professional, Published: Aug 2, 2004. ISBN 0-201-70245-2
 736
 737 McKusick, Marshall Kirk, George Neville-Neil, Robert Watson. The
 738 Design and Implementation of the FreeBSD Operating System, 2nd Edition.
 739 Pearson Education, Inc., 2014. ISBN 0-321-96897-2
 740
 741 Doug McIlroy. Research Unix Reader.
 742
 743 Michael G. Brown. The Role of BSD in the Development of Unix.
 744 Presented to the Tasmanian Unix Special Interest Group of the
 745 Australian Computer Society, Hobart, August 1993.
 746
 747 Peter H. Salus. Unix at 25. Byte Magazine, October 1994.
 748 URL: http://www.byte.com/art/9410/sec8/art3.htm
 749
 750 Andreas Klemm, Lars Köller. If you're going to San Francisco ...
 751 Die freien BSD-Varianten von Unix. c't April 1997, page 368ff.
 752
 753 BSD Release Announcements collection.
 754 URL: http://www.FreeBSD.org/releases/
 755
 756 BSD Hypertext Man Pages
 757 URL: http://www.FreeBSD.org/cgi/man.cgi
 758
 759 UNIX history graphing project
 760 URL: http://minnie.tuhs.org/Unix_History/index.html
 761
 762 UNIX history
 763 URL: http://www.levenez.com/unix/
 764
 765 James Howard: The BSD Family Tree
 766 URL: http://ezine.daemonnews.org/200104/bsd_family.html
 767 ("what are the differences between FreeBSD, NetBSD, and OpenBSD?")
 768
 769
 770 Acknowledgments
 771 ---------------
 772
 773 Josh Gilliam for suggestions, bug fixes, and finding very old
 774 original BSD announcements from Usenet or tapes.
 775
 776 Steven M. Schultz for providing 2.8BSD, 2.10BSD, 2.11BSD manual pages.
 777
 778 --
 779 Copyright (c) 1997-2012 Wolfram Schneider <wosch@FreeBSD.ORG>
 780 URL: http://svnweb.freebsd.org/base/head/share/misc/bsd-family-tree
 781
 782 $FreeBSD$