share/misc/bsd-family-tree

   1 The UNIX system family tree: Research and BSD
   2 ---------------------------------------------
   3
   4 First Edition (V1)
   5      |
   6 Second Edition (V2)
   7      |
   8 Third Edition (V3)
   9      |
  10 Fourth Edition (V4)
  11      |
  12 Fifth Edition (V5)
  13      |
  14 Sixth Edition (V6) -----*
  15        \                |
  16         \               |
  17          \              |
  18 Seventh Edition (V7)    |
  19             \           |
  20              \        1BSD
  21              32V        |
  22                \      2BSD---------------*
  23                 \    /                   |
  24                  \  /                    |
  25                   \/                     |
  26                  3BSD                    |
  27                   |                      |
  28                4.0BSD                2.79BSD
  29                   |                      |
  30                4.1BSD --------------> 2.8BSD
  31                   |                      |
  32               4.1aBSD -----------\       |
  33                   |                \     |
  34               4.1bBSD                \   |
  35                   |                    \ |
  36       *------ 4.1cBSD --------------> 2.9BSD
  37      /            |                      |
  38 Eighth Edition    |                   2.9BSD-Seismo
  39      |            |                      |
  40      +----<--- 4.2BSD               2.9.1BSD
  41      |            |                      |
  42      +----<--- 4.3BSD -------------> 2.10BSD
  43      |            |               /      |
  44 Ninth Edition     |              / 2.10.1BSD
  45      |         4.3BSD Tahoe-----+        |
  46      |            |              \       |
  47      |            |                \     |
  48      v            |                  2.11BSD
  49 Tenth Edition     |                      |
  50                   |                  2.11BSD rev #430
  51                4.3BSD NET/1              |
  52                   |                      v
  53                4.3BSD Reno
  54                   |
  55    *---------- 4.3BSD NET/2 -------------------+-------------*
  56    |                    |                      |             |
  57 386BSD 0.0              |                      |           BSD/386 ALPHA
  58    |                    |                      |             |
  59 386BSD 0.1 ------------>+                      |           BSD/386 0.3.[13]
  60    |     \              |                  4.4BSD Alpha      |
  61    |     386BSD 1.0     |                      |           BSD/386 0.9.[34]
  62    |                    |                  4.4BSD            |
  63    |                    |                    / |             |
  64    |                    |   4.4BSD-Encumbered  |             |
  65    |                -NetBSD 0.8                |           BSD/386 1.0
  66    |               /    |                      |             |
  67 FreeBSD 1.0 <-----'  NetBSD 0.9                |           BSD/386 1.1
  68    |                    |           .----- 4.4BSD Lite       |
  69 FreeBSD 1.1             |          /   /       |     \       |
  70    |                    |         /   /        |      \      |
  71 FreeBSD 1.1.5       .---|--------'   /         |       \     |
  72    |               /    |           /          |        \    |
  73 FreeBSD 1.1.5.1   /     |          /           |         \   |
  74    |             /   NetBSD 1.0 <-'            |          \  |
  75    |            /       |                      |           \ |
  76 FreeBSD 2.0 <--'        |                      |           BSD/OS 2.0
  77    |                     \                     |             |
  78 FreeBSD 2.0.5             \                    |           BSD/OS 2.0.1
  79    |                 .-----\------------- 4.4BSD Lite2       |
  80    |                 |      \             |  |   |   |       |
  81    |                 | .-----|------Rhapsody |   |   |       |
  82    |                 | |     |        NetBSD 1.3 |   |       |
  83    |                 | |     |           OpenBSD 2.3 |       |
  84    |                 | |     |                BSD/OS 3.0     |
  85 FreeBSD 2.1          | |     |                               |
  86  |   |               | |  NetBSD 1.1 ------.               BSD/OS 2.1
  87  | FreeBSD 2.1.5     | |     |              \                |
  88  |     |             | |  NetBSD 1.2         \             BSD/OS 3.0
  89  | FreeBSD 2.1.6     | |     |  \          OpenBSD 2.0       |
  90  |     |             | |     |   \             |             |
  91  | FreeBSD 2.1.6.1   | |     |    \            |             |
  92  |     |             | |     |     \           |             |
  93  | FreeBSD 2.1.7     | |     |      |          |             |
  94  |     |             | |     |  NetBSD 1.2.1   |             |
  95  | FreeBSD 2.1.7.1   | |     |                 |             |
  96  |                   | |     |                 |             |
  97  |                   | |     |                 |             |
  98  *-FreeBSD 2.2       | |     |                 |             |
  99  |        \          | |     |                 |             |
 100  |     FreeBSD 2.2.1 | |     |                 |             |
 101  |         |         | |     |                 |             |
 102  |     FreeBSD 2.2.2 | |     |             OpenBSD 2.1       |
 103  |         |         | |     |                 |             |
 104  |     FreeBSD 2.2.5 | |     |                 |             |
 105  |         |         | |     |             OpenBSD 2.2       |
 106  |         |         | |  NetBSD 1.3           |             |
 107  |     FreeBSD 2.2.6 | |     |    |            |             |
 108  |         |         | |     | NetBSD 1.3.1    |           BSD/OS 3.1
 109  |         |         | |     |    |        OpenBSD 2.3       |
 110  |         |         | |     | NetBSD 1.3.2    |             |
 111  |     FreeBSD 2.2.7 | |     |    |            |             |
 112  |         |         | |     |    |            |           BSD/OS 4.0
 113  |     FreeBSD 2.2.8 | |     |    |            |             |
 114  |         |         | |     |    |            |             |
 115  |         v         | |     |    |        OpenBSD 2.4       |
 116  |     FreeBSD 2.2.9 | |     |    |            |             |
 117  |                   | |     |    |            |             |
 118 FreeBSD 3.0 <--------* |     |    v            |             |
 119  |                     |     | NetBSD 1.3.3    |             |
 120  *---FreeBSD 3.1       |     |                 |             |
 121  |       |             |     |                 |           BSD/OS 4.0.1
 122  |   FreeBSD 3.2----*  |  NetBSD 1.4       OpenBSD 2.5       |
 123  |       |          |  |  |  |    |            |             |
 124  |       |          |  |  |  |    |            |             |
 125  |       |          |  |  |  |    |            |             |
 126  |   FreeBSD 3.3    |  |  |  | NetBSD 1.4.1    |             |
 127  |       |          |  |  |  |    |        OpenBSD 2.6       |
 128  |   FreeBSD 3.4    |  |  |  |    |            |             |
 129  |           |      |  |  |  |    |            |           BSD/OS 4.1
 130 FreeBSD 4.0  |      |  |  |  | NetBSD 1.4.2    |             |
 131  |           |      |  |  |  |    |            |             |
 132  |           |      |  |  |  |    |            |             |
 133  |   FreeBSD 3.5    |  |  |  |    |        OpenBSD 2.7       |
 134  |           |      |  |  |  |    |            |             |
 135  |   FreeBSD 3.5.1  |  |  |  |    |            |             |
 136  |                  |  |  |  |    |            |             |
 137  *---FreeBSD 4.1    |  |  |  |    |            |             |
 138  |      |           |  | (?) |    |            |             |
 139  |   FreeBSD 4.1.1  |  |  /  |    |            |             |
 140  |      |           |  | /   |    |            |             |
 141  |   FreeBSD 4.2   Darwin/   | NetBSD 1.4.3    |             |
 142  |      |         Mac OS X   |             OpenBSD 2.8     BSD/OS 4.2
 143  |      |             |      |                 |             |
 144  |      |             |      |                 |             |
 145  |      |           10.0  NetBSD 1.5           |             |
 146  |   FreeBSD 4.3      |      |    |            |             |
 147  |      |             |      |    |        OpenBSD 2.9       |
 148  |      |             |      | NetBSD 1.5.1    |             |
 149  |      |             |      |    |            |             |
 150  |   FreeBSD 4.4-.    |      | NetBSD 1.5.2    |             |
 151  |      |        | Mac OS X  |    |            |             |
 152  |      |        |   10.1    |    |        OpenBSD 3.0       |
 153  |   FreeBSD 4.5 |    |      |    |            |             |
 154  |      |         \   |      |    |            |           BSD/OS 4.3
 155  |   FreeBSD 4.6   \  |      |    |        OpenBSD 3.1       |
 156  |      |           \ |      | NetBSD 1.5.3    |             |
 157  |   FreeBSD 4.6.2 Mac OS X  |                 |             |
 158  |      |            10.2    |                 |             |
 159  |   FreeBSD 4.7      |      |                 |             |
 160  |      |             |   NetBSD 1.6       OpenBSD 3.2       |
 161  |   FreeBSD 4.8      |      |    |            |             |
 162  |      |             |      | NetBSD 1.6.1    |             |
 163  |      |--------.    |      |    |        OpenBSD 3.3     BSD/OS 5.0
 164  |      |         \   |      |    |            |             |
 165  |   FreeBSD 4.9   |  |      |    |        OpenBSD 3.4     BSD/OS 5.1 ISE
 166  |      |          |  |      |    |            |
 167  |      |          |  |      | NetBSD 1.6.2    |
 168  |      |          |  |      |    |            |
 169  |      |          |  |      |    |        OpenBSD 3.5
 170  |      |          |  |      |    v            |
 171  |   FreeBSD 4.10  |  |      |                 |
 172  |      |          |  |      |                 |
 173  |   FreeBSD 4.11  |  |      |                 |
 174  |                 |  |      |                 |
 175  |                  `-|------|-----------------|---------------------.
 176  |                    |      |                 |                      \
 177 FreeBSD 5.0           |      |                 |                       |
 178  |                    |      |                 |                       |
 179 FreeBSD 5.1           |      |                 |                 DragonFly 1.0
 180  |          \         |      |                 |                       |
 181  |           ----- Mac OS X  |                 |                       |
 182  |                   10.3    |                 |                       |
 183 FreeBSD 5.2           |      |                 |                       |
 184  |      |             |      |                 |                       |
 185  |   FreeBSD 5.2.1    |      |                 |                       |
 186  |                    |      |                 |                       |
 187  *-------FreeBSD 5.3  |      |                 |                       |
 188  |           |        |      |             OpenBSD 3.6                 |
 189  |           |        |   NetBSD 2.0           |                       |
 190  |           |        |      | |  |            |                DragonFly 1.2.0
 191  |           |     Mac OS X  | | NetBSD 2.0.2  |                       |
 192  |           |       10.4    | |  |            |                       |
 193  |       FreeBSD 5.4  |      | |  |            |                       |
 194  |           |        |      | |  |        OpenBSD 3.7                 |
 195  |           |        |      | | NetBSD 2.0.3  |                       |
 196  |           |        |      | |  |            |                       |
 197  *--FreeBSD  |        |      | |  v        OpenBSD 3.8                 |
 198  |    6.0    |        |      | |               |                       |
 199  |     |     |        |      |  \              |                       |
 200  |     |     |        |      | NetBSD 2.1      |                       |
 201  |     |     |        |      |                 |                       |
 202  |     |     |        |   NetBSD 3.0           |                       |
 203  |     |     |        |      | |  |            |                DragonFly 1.4.0
 204  |     |     |        |      | |  |        OpenBSD 3.9                 |
 205  |  FreeBSD  |        |      | |  |            |                       |
 206  |    6.1    |        |      | |  |            |                       |
 207  |     |  FreeBSD 5.5 |      | |  |            |                       |
 208  |     |              |      | | NetBSD 3.0.1  |                DragonFly 1.6.0
 209  |     |              |      | |  |            |                       |
 210  |     |              |      | |  |        OpenBSD 4.0                 |
 211  |     |              |      | | NetBSD 3.0.2  |                       |
 212  |     |              |      | NetBSD 3.1      |                       |
 213  | FreeBSD 6.2        |      |                 |                       |
 214  |     |              |      |                 |                DragonFly 1.8.0
 215  |     |              |      |             OpenBSD 4.1                 |
 216  |     |              |      |                 |                DragonFly 1.10.0
 217  |     |           Mac OS X  |                 |                       |
 218  |     |             10.5    |                 |                       |
 219  |     |              |      |             OpenBSD 4.2                 |
 220  |     |              |   NetBSD 4.0           |                       |
 221  | FreeBSD 6.3        |      |    |            |                       |
 222  |            \       |      |    |            |                       |
 223  *--FreeBSD    |      |      |    |            |                DragonFly 1.12.0
 224  |    7.0      |      |      |    |            |                       |
 225  |     |       |      |      |    |        OpenBSD 4.3                 |
 226  |     |       |      |      | NetBSD          |                DragonFly 2.0.0
 227  |     |    FreeBSD   |      |  4.0.1      OpenBSD 4.4                 |
 228  |     |      6.4     |      |                 |                       |
 229  |     |              |      |                 |                       |
 230  |  FreeBSD 7.1       |      |                 |                       |
 231  |     |              |      |                 |                DragonFly 2.2.0
 232  |  FreeBSD 7.2       |   NetBSD 5.0       OpenBSD 4.5                 |
 233  |             \      |      | |    \          |                       |
 234  |              |  Mac OS X  | |     \         |                       |
 235  |              |    10.6    | |      \        |                       |
 236  |              |     |      | |   NetBSD      |                DragonFly 2.4.0
 237  |              |     |      | |    5.0.1  OpenBSD 4.6                 |
 238  |              |     |      | |       |       |                       |
 239  *--FreeBSD     |     |      | |       |       |                       |
 240  |    8.0       |     |      | |       |       |                       |
 241  |     |     FreeBSD  |      | |   NetBSD      |                       |
 242  |     |       7.3    |      | |    5.0.2      |                DragonFly 2.6.0
 243  |     |        |     |      | |           OpenBSD 4.7                 |
 244  |  FreeBSD     |     |      | |               |                       |
 245  |    8.1       |     |      | |               |                       |
 246  |     |        |     |      | |               |                DragonFly 2.8.2
 247  |     |        |     |      | |           OpenBSD 4.8                 |
 248  |     |        |     |      | *--NetBSD       |                       |
 249  |  FreeBSD  FreeBSD  |      | |    5.1        |                       |
 250  |    8.2      7.4    |      | |      |        |               DragonFly 2.10.1
 251  |     |              |      | |      |    OpenBSD 4.9                 |
 252  |     `-----.     Mac OS X  | |      |        |                       |
 253  |            \      10.7    | |      |        |                       |
 254  |             |      |      | |      |    OpenBSD 5.0                 |
 255  *--FreeBSD    |      |      | |      |        |                       |
 256  |    9.0      |      |      | |   NetBSD      |               DragonFly 3.0.1
 257  |     |    FreeBSD   |      | |    5.1.2      |                       |
 258  |     |      8.3     |      | |      |        |                       |
 259  |     |       |      |      | |   NetBSD      |                       |
 260  |     |       |      |      | |    5.1.3      |                       |
 261  |     |       |      |      | |           OpenBSD 5.1                 |
 262  |     |       |   Mac OS X  | `----.          |                       |
 263  |     |       |     10.8    |       \         |                       |
 264  |     |       |      |   NetBSD 6.0  |        |                       |
 265  |     |       |      |      | | |    |    OpenBSD 5.2         DragonFly 3.2.1
 266  |  FreeBSD    |      |      | | | NetBSD      |                       |
 267  |    9.1      |      |      | | |   5.2       |                       |
 268  |     |       |      |      | | |    |        |                       |
 269  |     |       |      |      | | | NetBSD      |                       |
 270  |     |       |      |      | | |  5.2.1      |                       |
 271  |     |       |      |      | | |             |                       |
 272  |     |       |      |      | |  \            |                       |
 273  |     |       |      |      | |   NetBSD      |                       |
 274  |     |       |      |      | |    6.0.1      |                       |
 275  |     |       |      |      | |      |        |                       |
 276  |     |       |      |      | |   NetBSD      |                       |
 277  |     |       |      |      | |    6.0.2      |                       |
 278  |     |       |      |      | |      |   OpenBSD 5.3          DragonFly 3.4.1
 279  |     |       |      |      | |   NetBSD      |                       |
 280  |     |       |      |      | |    6.0.3      |                       |
 281  |     |       |      |      | |      |        |                       |
 282  |     |       |      |      | |   NetBSD      |                       |
 283  |     |       |      |      | |    6.0.4      |                       |
 284  |     |       |      |      | |      |        |                       |
 285  |     |       |      |      | |   NetBSD      |                       |
 286  |     |       |      |      | |    6.0.5      |                       |
 287  |     |       |      |      | |               |                       |
 288  |     |       |      |      | |`-NetBSD 6.1   |                       |
 289  |     |    FreeBSD   |      |       |         |                       |
 290  |     |      8.4     |      |    NetBSD 6.1.1 |                       |
 291  |     |              |      |       |         |                       |
 292  |  FreeBSD           |      |    NetBSD 6.1.2 |                       |
 293  |    9.2          Mac OS X  |       |         |                       |
 294  |     |             10.9    |       |    OpenBSD 5.4                  |
 295  |     `-----.        |      |       |         |               DragonFly 3.6.0
 296  |            \       |      |       |         |                       |
 297  *--FreeBSD    |      |      |    NetBSD 6.1.3 |                       |
 298  |   10.0      |      |      |       |         |                       |
 299  |     |       |      |      |       |         |               DragonFly 3.6.1
 300  |     |       |      |      |       |         |                       |
 301  |     |       |      |      |       |         |                       |
 302  |     |       |      |      |       |         |               DragonFly 3.6.2
 303  |     |       |      |      |    NetBSD 6.1.4 |                       |
 304  |     |       |      |      |       |         |                       |
 305  |     |       |      |      |       |    OpenBSD 5.5                  |
 306  |     |       |      |      |       |         |                       |
 307  |     |       |      |      |       |         |               DragonFly 3.8.0
 308  |     |       |      |      |       |         |                       |
 309  |     |       |      |      |       |         |                       |
 310  |     |       |      |      |       |         |               DragonFly 3.8.1
 311  |     |       |      |      |       |         |                       |
 312  |     |       |      |      |       |         |                       |
 313  |     |       |      |      |       |         |               DragonFly 3.6.3
 314  |     |       |      |      |       |         |                       |
 315  |     |    FreeBSD   |      |       |         |                       |
 316  |     |      9.3     |      |       |         |                       |
 317  |     |              |      |    NetBSD 6.1.5 |               DragonFly 3.8.2
 318  |     |           Mac OS X  |                 |                       |
 319  |     |             10.10   |                 |                       |
 320  |     |              |      |            OpenBSD 5.6                  |
 321  |  FreeBSD           |      |                 |                       |
 322  |   10.1             |      |                 |               DragonFly 4.0.1
 323  |     |              |      |                 |                       |
 324  |     |              |      |                 |               DragonFly 4.0.2
 325  |     |              |      |                 |                       |
 326  |     |              |      |                 |               DragonFly 4.0.3
 327  |     |              |      |                 |                       |
 328  |     |              |      |                 |               DragonFly 4.0.4
 329  |     |              |      |                 |                       |
 330  |     |              |      |                 |               DragonFly 4.0.5
 331  |     |              |      |                 |                       |
 332  |     |              |      |            OpenBSD 5.7                  |
 333  |     |              |      |                 |               DragonFly 4.2.0
 334  |  FreeBSD           |      |                 |                       |
 335  |   10.2             |      |                 |                       |
 336  |                  OS X  NetBSD 7.0           |                       |
 337  |                  10.11    |            OpenBSD 5.8                  |
 338  |                    |      |                 |               DragonFly 4.4.1
 339  |                    |      |                 |                       |
 340 FreeBSD 11 -current   |  NetBSD -current  OpenBSD -current     DragonFly -current
 341  |                    |      |                 |                       |
 342  v                    v      v                 v                       v
 343
 344 Time
 345 ----------------
 346
 347 Time tolerance +/- 6 months, depending on which book/article you read; if it
 348 was the announcement in Usenet or if it was available as tape.
 349
 350 [44B] McKusick, Marshall Kirk, Keith Bostic, Michael J Karels,
 351         and John Quarterman. The Design and Implementation of
 352         the 4.4BSD Operating System.
 353 [APL] Apple website [http://www.apple.com/macosx/]
 354 [BSDI] Berkeley Software Design, Inc.
 355 [DFB] DragonFlyBSD Project, The.
 356 [DOC] README, COPYRIGHT on tape.
 357 [FBD] FreeBSD Project, The.
 358 [KB]  Keith Bostic. BSD2.10 available from Usenix. comp.unix.sources,
 359         Volume 11, Info 4, April, 1987.
 360 [KKK] Mike Karels, Kirk McKusick, and Keith Bostic. tahoe announcement.
 361         comp.bugs.4bsd.ucb-fixes, June 15, 1988.
 362 [KSJ] Michael J. Karels, Carl F. Smith, and William F. Jolitz.
 363         Changes in the Kernel in 2.9BSD. Second Berkeley Software
 364         Distribution UNIX Version 2.9, July, 1983.
 365 [NBD] NetBSD Project, The.
 366 [OBD] OpenBSD Project, The.
 367 [QCU] Salus, Peter H. A quarter century of UNIX.
 368 [SMS] Steven M. Schultz. 2.11BSD, UNIX for the PDP-11.
 369 [TUHS] The Unix Historical Society.  http://minnie.tuhs.org/Unix_History/.
 370 [USE] Usenet announcement.
 371 [WRS] Wind River Systems, Inc.
 372 [dmr] Dennis Ritchie, via E-Mail
 373
 374 Multics                 1965
 375 UNIX                    Summer 1969
 376                                 DEC PDP-7
 377 First   Edition         1971-11-03 [QCU]
 378                                 DEC PDP-11/20, Assembler
 379 Second  Edition         1972-06-12 [QCU]
 380                                 10 UNIX installations
 381 Third   Edition         1973-02-xx [QCU]
 382                                 Pipes, 16 installations
 383 Fourth  Edition         1973-11-xx [QCU]
 384                                 rewriting in C effected,
 385                                 above 30 installations
 386 Fifth   Edition         1974-06-xx [QCU]
 387                                 above 50 installations
 388 Sixth   Edition         1975-05-xx [QCU]
 389                                 port to DEC Vax
 390 Seventh Edition         1979-01-xx [QCU]
 391                                 first portable UNIX
 392 Eighth  Edition         1985-02-xx [QCU]
 393                                 VAX 11/750, VAX 11/780 [dmr]
 394                                 descended from 4.1c BSD [dmr]
 395                                 descended from 4.1 BSD [44B]
 396                         scooping-out and replacement of the character-device
 397                         and networking part by the streams mechanism
 398
 399 Ninth   Edition         1986-09-xx [QCU]
 400 Tenth   Edition         1989-10-xx [QCU]
 401
 402 1BSD                    late 1977
 403                         1978-03-09 [QCU]
 404                                 PDP-11, Pascal, ex(1)
 405                                 30 free copies of 1BSD sent out
 406                                 35 tapes sold for 50 USD [QCU]
 407 2BSD                    mid 1978 [QCU] 1979-05-10 [TUHS]
 408                                 75 2BSD tapes shipped
 409 2.79BSD                 1980-04-xx [TUHS]
 410 2.8BSD                  1981-07-xx [KSJ]
 411
 412 2.8.1BSD                1982-01-xx [QCU]
 413                                 set of performance improvements
 414 2.9BSD                  1983-07-xx [KSJ]
 415 2.9.1BSD                1983-11-xx [TUHS]
 416 2.9BSD-Seismo           1985-08-xx [SMS]
 417 2.10BSD                 1987-04-xx [KKK]
 418 2.10.1BSD               1989-01-xx [SMS]
 419 2.11BSD                 1992-02-xx [SMS]
 420 2.11BSD rev #430        1999-12-13 [SMS]
 421
 422 32V                     1978-1[01]-xx [QCU]
 423 3BSD                    late 1979 [QCU] March 1980 [TUHS]
 424                                 virtual memory, page replacement,
 425                                 demand paging
 426 4.0BSD                  1980-10-xx
 427 4.1BSD                  1981-07-08 [DOC]
 428 4.1aBSD                 1982-04-xx
 429                                 alpha release, 100 sites, networking [44B]
 430 4.1bBSD                         internal release, fast filesystem [44B]
 431 4.1cBSD                 late 1982
 432                                 beta release, IPC [44B]
 433 4.2BSD                  1983-09-xx [QCU]
 434                         1983-08-03 [DOC]
 435 4.3BSD                  1986-06-xx [QCU]
 436                         1986-04-05 [KB], [DOC]
 437 4.3BSD Tahoe            1988-06-15 [QCU], [DOC]
 438 4.3BSD NET/1            1988-11-xx [QCU]
 439                         1989-01-01 [DOC]
 440 4.3BSD Reno             1990-06-29 [QCU], [DOC]
 441 4.3BSD NET/2            1991-06-28 [QCU], [DOC]
 442
 443 BSD/386 ALPHA           1991-12-xx [BSDI]
 444                                 first code released to people outside BSDI
 445 386BSD 0.0              1992-02-xx [DOC]
 446 BSD/386 0.3.1           1992-04-xx [BSDI] first ext. beta; B customers
 447 BSD/386 0.3.3           1992-06-xx [BSDI] first CDROM version
 448 386BSD 0.1              1992-07-28 [DOC]
 449 4.4BSD Alpha            1992-07-07
 450 BSD/386 0.9.3           1992-10-xx [BSDI]
 451                                 first external gamma; G customers
 452 BSD/386 0.9.4           1992-12-xx [BSDI]
 453                                 would have been 1.0 except for request
 454                                 for preliminary injunction
 455 BSD/386 1.0             1993-03-xx [BSDI]
 456                                 injunction denied; first official release
 457 NetBSD 0.8              1993-04-20 [NBD]
 458 4.4BSD                  1993-06-01 [USE]
 459 NetBSD 0.9              1993-08-23 [NBD]
 460 FreeBSD 1.0             1993-11-01 [FBD]
 461 FreeBSD 1.0.2           1993-11-14 [FBD]
 462                                 supersedes 1.0 13 days after release.
 463 BSD/386 1.1             1994-02-xx [BSDI]
 464 4.4BSD Lite             1994-03-01 [USE]
 465 FreeBSD 1.1             1994-05-07 [FBD]
 466 FreeBSD 1.1.5           1994-06-30 [FBD]
 467 FreeBSD 1.1.5.1         1994-07-05 [FBD]
 468                                 supersedes 1.1.5 5 days after release.
 469 NetBSD 1.0              1994-10-26 [NBD]
 470 386BSD 1.0              1994-11-12 [USE]
 471 FreeBSD 2.0             1994-11-23 [FBD]
 472 BSD/OS 2.0              1995-01-xx [BSDI] 4.4 lite based
 473 FreeBSD 2.0.5           1995-06-10 [FBD]
 474 BSD/OS 2.0.1            1995-06-xx [BSDI]
 475 4.4BSD Lite Release 2   1995-06-xx [44B]
 476                                 the true final distribution from the CSRG
 477 FreeBSD 2.1.0           1995-11-19 [FBD]
 478 NetBSD 1.1              1995-11-26 [NBD]
 479 BSD/OS 2.1              1996-01-xx [BSDI]
 480 FreeBSD 2.1.5           1996-07-14 [FBD]
 481 NetBSD 1.2              1996-10-04 [NBD]
 482 OpenBSD 2.0             1996-10-18 [OBD]
 483 FreeBSD 2.1.6           1996-11-16 [FBD]
 484 FreeBSD 2.1.6.1         1996-11-25 [FBD] (sendmail security release)
 485 Rhapsody                1997-xx-xx
 486 FreeBSD 2.1.7           1997-02-20 [FBD]
 487 BSD/OS 3.0              1997-02-xx [BSDI] 4.4 lite2 based
 488 FreeBSD 2.2.0           1997-03-16 [FBD]
 489 FreeBSD 2.2.1           1997-03-25 [FBD]
 490 FreeBSD 2.2.2           1997-05-16 [FBD]
 491 NetBSD 1.2.1            1997-05-20 [NBD] (patch release)
 492 OpenBSD 2.1             1997-06-01 [OBD]
 493 FreeBSD 2.2.5           1997-10-22 [FBD]
 494 OpenBSD 2.2             1997-12-01 [OBD]
 495 NetBSD 1.3              1998-01-04 [NBD]
 496 FreeBSD 2.2.6           1998-03-25 [FBD]
 497 NetBSD 1.3.1            1998-03-09 [NBD] (patch release)
 498 BSD/OS 3.1              1998-03-xx [BSDI]
 499 OpenBSD 2.3             1998-05-19 [OBD]
 500 NetBSD 1.3.2            1998-05-29 [NBD] (patch release)
 501 FreeBSD 2.2.7           1998-07-22 [FBD]
 502 BSD/OS 4.0              1998-08-xx [BSDI]
 503                                 2-lock MP support, ELF executables
 504 FreeBSD 3.0             1998-10-16 [FBD]
 505                                 FreeBSD-3.0 is a snapshot from -current,
 506                                 while 3.1 and 3.2 are from 3.x-stable which
 507                                 was branched quite some time after 3.0-release
 508 FreeBSD 2.2.8           1998-11-29 [FBD]
 509 OpenBSD 2.4             1998-12-01 [OBD]
 510 NetBSD 1.3.3            1998-12-23 [NBD] (patch release)
 511 FreeBSD 3.1             1999-02-15 [FBD]
 512 BSD/OS 4.0.1            1999-03-xx [BSDI]
 513 NetBSD 1.4              1999-05-12 [NBD]
 514 FreeBSD 3.2             1999-05-17 [FBD]
 515 OpenBSD 2.5             1999-05-19 [OBD]
 516 NetBSD 1.4.1            1999-08-26 [NBD] (patch release)
 517 FreeBSD 3.3             1999-09-17 [FBD]
 518 OpenBSD 2.6             1999-12-01 [OBD]
 519 FreeBSD 3.4             1999-12-20 [FBD]
 520 BSD/OS 4.1              1999-12-xx [BSDI]
 521 FreeBSD 4.0             2000-03-13 [FBD]
 522 NetBSD 1.4.2            2000-03-19 [NBD] (patch release)
 523 OpenBSD 2.7             2000-06-15 [OBD]
 524 FreeBSD 3.5             2000-06-24 [FBD]
 525 FreeBSD 4.1             2000-07-27 [FBD]
 526 FreeBSD 3.5.1           2000-07-28 [FBD]
 527 FreeBSD 4.1.1           2000-09-25 [FBD] (a network-only patch release)
 528 FreeBSD 4.2             2000-11-21 [FBD]
 529 NetBSD 1.4.3            2000-11-25 [NBD] (patch release)
 530 BSD/OS 4.2              2000-11-29 [BSDI]
 531 OpenBSD 2.8             2000-12-01 [OBD]
 532 NetBSD 1.5              2000-12-06 [NBD]
 533 Mac OS X 10.0           2001-03-24 [APL]
 534 FreeBSD 4.3             2001-04-20 [FBD]
 535 OpenBSD 2.9             2001-06-01 [OBD]
 536 NetBSD 1.5.1            2001-07-11 [NBD] (patch release)
 537 NetBSD 1.5.2            2001-09-13 [NBD] (patch release)
 538 FreeBSD 4.4             2001-09-18 [FBD]
 539 Mac OS X 10.1           2001-09-29 [APL]
 540 OpenBSD 3.0             2001-12-01 [OBD]
 541 FreeBSD 4.5             2002-01-29 [FBD]
 542 BSD/OS 4.3              2002-03-14 [WRS]
 543 OpenBSD 3.1             2002-05-19 [OBD]
 544 FreeBSD 4.6             2002-06-15 [FBD]
 545 NetBSD 1.5.3            2002-07-22 [NBD] (patch release)
 546 FreeBSD 4.6.2           2002-08-15 [FBD] (patch release)
 547 Mac OS X 10.2           2002-08-23 [APL]
 548 NetBSD 1.6              2002-09-14 [NBD]
 549 FreeBSD 4.7             2002-10-08 [FBD]
 550 OpenBSD 3.2             2002-11-01 [OBD]
 551 FreeBSD 5.0             2003-01-17 [FBD]
 552                                 FreeBSD 5.0 is a separate branch off of
 553                                 -current, similar to 3.0.
 554 FreeBSD 4.8             2003-04-03 [FBD]
 555 NetBSD 1.6.1            2003-04-21 [NBD] (patch release)
 556 OpenBSD 3.3             2003-05-01 [OBD]
 557 BSD/OS 5.0              2003-05-?? [WRS]
 558 FreeBSD 5.1             2003-06-09 [FBD]
 559 Mac OS X 10.3           2003-10-24 [APL]
 560 FreeBSD 4.9             2003-10-28 [FBD]
 561 BSD/OS 5.1 ISE          2003-10-?? [WRS] (final version)
 562 OpenBSD 3.4             2003-11-01 [OBD]
 563 FreeBSD 5.2             2004-01-12 [FBD]
 564 FreeBSD 5.2.1           2004-02-22 [FBD] (patch release)
 565 NetBSD 1.6.2            2004-03-01 [NBD] (patch release)
 566 OpenBSD 3.5             2004-04-01 [OBD]
 567 FreeBSD 4.10            2004-05-27 [FBD]
 568 DragonFly 1.0           2004-07-12 [DFB]
 569 OpenBSD 3.6             2004-10-29 [OBD]
 570 FreeBSD 5.3             2004-11-06 [FBD]
 571 NetBSD 2.0              2004-12-09 [NBD]
 572 FreeBSD 4.11            2005-01-25 [FBD]
 573 DragonFly 1.2.0         2005-04-08 [DFB]
 574 NetBSD 2.0.2            2005-04-14 [NBD] (security/critical release)
 575 Mac OS X 10.4           2005-04-29 [APL]
 576 FreeBSD 5.4             2005-05-09 [FBD]
 577 OpenBSD 3.7             2005-05-19 [OBD]
 578 NetBSD 2.0.3            2005-10-31 [NBD] (security/critical release)
 579 OpenBSD 3.8             2005-11-01 [OBD]
 580 FreeBSD 6.0             2005-11-01 [FBD]
 581 NetBSD 2.1              2005-11-02 [NBD]
 582 NetBSD 3.0              2005-12-23 [NBD]
 583 DragonFly 1.4.0         2006-01-08 [DFB]
 584 FreeBSD 2.2.9           2006-04-01 [FBD]
 585 OpenBSD 3.9             2006-05-01 [OBD]
 586 FreeBSD 6.1             2006-05-08 [FBD]
 587 FreeBSD 5.5             2006-05-25 [FBD]
 588 NetBSD 3.0.1            2006-07-24 [NBD] (security/critical release)
 589 DragonFly 1.6.0         2006-07-24 [DFB]
 590 OpenBSD 4.0             2006-11-01 [OBD]
 591 NetBSD 3.0.2            2006-11-04 [NBD] (security/critical release)
 592 NetBSD 3.1              2006-11-04 [NBD]
 593 FreeBSD 6.2             2007-01-15 [FBD]
 594 DragonFly 1.8.0         2007-01-30 [DFB]
 595 OpenBSD 4.1             2007-05-01 [OBD]
 596 DragonFly 1.10.0        2007-08-06 [DFB]
 597 Mac OS X 10.5           2007-10-26 [APL]
 598 OpenBSD 4.2             2007-11-01 [OBD]
 599 NetBSD 4.0              2007-12-19 [NBD]
 600 FreeBSD 6.3             2008-01-18 [FBD]
 601 DragonFly 1.12.0        2008-02-26 [DFB]
 602 FreeBSD 7.0             2008-02-27 [FBD]
 603 OpenBSD 4.3             2008-05-01 [OBD]
 604 DragonFly 2.0.0         2008-07-21 [DFB]
 605 OpenBSD 4.4             2008-11-01 [OBD]
 606 FreeBSD 6.4             2008-11-28 [FBD]
 607 FreeBSD 7.1             2009-01-04 [FBD]
 608 DragonFly 2.2.0         2009-02-17 [DFB]
 609 NetBSD 5.0              2009-04-29 [NBD]
 610 OpenBSD 4.5             2009-05-01 [OBD]
 611 FreeBSD 7.2             2009-05-04 [FBD]
 612 Mac OS X 10.6           2009-06-08 [APL]
 613 NetBSD 5.0.1            2009-08-02 [NBD] (security/critical release)
 614 DragonFly 2.4.0         2009-09-16 [DFB]
 615 OpenBSD 4.6             2009-10-18 [OBD]
 616 FreeBSD 8.0             2009-11-26 [FBD]
 617 NetBSD 5.0.2            2010-02-12 [NBD] (security/critical release)
 618 FreeBSD 7.3             2010-03-23 [FBD]
 619 DragonFly 2.6.0         2010-03-28 [DFB]
 620 OpenBSD 4.7             2010-05-19 [OBD]
 621 FreeBSD 8.1             2010-07-24 [FBD]
 622 DragonFly 2.8.2         2010-10-30 [DFB]
 623 OpenBSD 4.8             2010-11-01 [OBD]
 624 NetBSD 5.1              2010-11-19 [NBD]
 625 FreeBSD 7.4             2011-02-24 [FBD]
 626 FreeBSD 8.2             2011-02-24 [FBD]
 627 DragonFly 2.10.1        2011-04-26 [DFB]
 628 OpenBSD 4.9             2011-05-01 [OBD]
 629 Mac OS X 10.7           2011-07-20 [APL]
 630 OpenBSD 5.0             2011-11-01 [OBD]
 631 FreeBSD 9.0             2012-01-12 [FBD]
 632 NetBSD 5.1.2            2012-02-02 [NBD] (security/critical release)
 633 DragonFly 3.0.1         2012-02-21 [DFB]
 634 FreeBSD 8.3             2012-04-18 [FBD]
 635 OpenBSD 5.1             2012-05-01 [OBD]
 636 Mac OS X 10.8           2012-07-25 [APL]
 637 NetBSD 6.0              2012-10-17 [NBD]
 638 OpenBSD 5.2             2012-11-01 [OBD]
 639 DragonFly 3.2.1         2012-11-02 [DFB]
 640 NetBSD 5.2              2012-12-03 [NBD]
 641 NetBSD 6.0.1            2012-12-26 [NBD] (security/critical release)
 642 FreeBSD 9.1             2012-12-30 [FBD]
 643 DragonFly 3.4.1         2013-04-29 [DFB]
 644 OpenBSD 5.3             2013-05-01 [OBD]
 645 NetBSD 6.0.2            2013-05-18 [NBD] (security/critical release)
 646 NetBSD 6.1              2013-05-18 [NBD]
 647 FreeBSD 8.4             2013-06-07 [FBD]
 648 NetBSD 6.1.1            2013-08-22 [NBD]
 649 NetBSD 5.1.3            2013-09-29 [NBD]
 650 NetBSD 5.2.1            2013-09-29 [NBD]
 651 FreeBSD 9.2             2013-09-30 [FBD]
 652 NetBSD 6.0.3            2013-09-30 [NBD]
 653 NetBSD 6.1.2            2013-09-30 [NBD]
 654 Mac OS X 10.9           2013-10-22 [APL]
 655 OpenBSD 5.4             2013-11-01 [OBD]
 656 DragonFly 3.6.0         2013-11-25 [DFB]
 657 FreeBSD 10.0            2014-01-20 [FBD]
 658 NetBSD 6.0.4            2014-01-27 [NBD]
 659 NetBSD 6.1.3            2014-01-27 [NBD]
 660 DragonFly 3.6.1         2014-02-22 [DFB]
 661 DragonFly 3.6.2         2014-04-10 [DFB]
 662 NetBSD 6.0.5            2014-04-19 [NDB]
 663 NetBSD 6.1.4            2014-04-19 [NDB]
 664 OpenBSD 5.5             2014-05-01 [OBD]
 665 DragonFly 3.8.0         2014-06-04 [DFB]
 666 DragonFly 3.8.1         2014-06-16 [DFB]
 667 DragonFly 3.6.3         2014-06-17 [DFB]
 668 FreeBSD 9.3             2014-07-05 [FBD]
 669 DragonFly 3.8.2         2014-08-08 [DFB]
 670 NetBSD 6.1.5            2014-09-22 [NBD]
 671 Mac OS X 10.10          2014-10-16 [APL]
 672 OpenBSD 5.6             2014-11-01 [OBD]
 673 FreeBSD 10.1            2014-11-14 [FBD]
 674 DragonFly 4.0.1         2014-11-25 [DFB]
 675 DragonFly 4.0.2         2015-01-07 [DFB]
 676 DragonFly 4.0.3         2015-01-21 [DFB]
 677 DragonFly 4.0.4         2015-03-09 [DFB]
 678 DragonFly 4.0.5         2015-03-23 [DFB]
 679 OpenBSD 5.7             2015-05-01 [OBD]
 680 DragonFly 4.2.0         2015-06-29 [DFB]
 681 FreeBSD 10.2            2015-08-13 [FBD]
 682 NetBSD 7.0              2015-09-25 [NBD]
 683 OS X 10.11              2015-09-30 [APL]
 684 OpenBSD 5.8             2015-10-18 [OBD]
 685 DragonFly 4.4.1         2015-12-07 [DFB]
 686
 687 Bibliography
 688 ------------------------
 689
 690 Leffler, Samuel J., Marshall Kirk McKusick, Michael J Karels and John
 691 Quarterman. The Design and Implementation of the 4.3BSD UNIX Operating
 692 System. Reading, Mass. Addison-Wesley, 1989. ISBN 0-201-06196-1
 693
 694 Salus, Peter H. A quarter century of UNIX. Addison-Wesley Publishing
 695 Company, Inc., 1994. ISBN 0-201-54777-5
 696
 697 McKusick, Marshall Kirk, Keith Bostic, Michael J Karels, and John
 698 Quarterman. The Design and Implementation of the 4.4BSD Operating
 699 System. Reading, Mass. Addison-Wesley, 1996. ISBN 0-201-54979-4
 700
 701 McKusick, Marshall Kirk, George Neville-Neil. The Design and
 702 Implementation of the FreeBSD Operating System.
 703 Addison-Wesley Professional, Published: Aug 2, 2004. ISBN 0-201-70245-2
 704
 705 McKusick, Marshall Kirk, George Neville-Neil, Robert Watson. The
 706 Design and Implementation of the FreeBSD Operating System, 2nd Edition.
 707 Pearson Education, Inc., 2014. ISBN 0-321-96897-2
 708
 709 Doug McIlroy. Research Unix Reader.
 710
 711 Michael G. Brown. The Role of BSD in the Development of Unix.
 712 Presented to the Tasmanian Unix Special Interest Group of the
 713 Australian Computer Society, Hobart, August 1993.
 714
 715 Peter H. Salus. Unix at 25. Byte Magazine, October 1994.
 716 URL: http://www.byte.com/art/9410/sec8/art3.htm
 717
 718 Andreas Klemm, Lars Köller. If you're going to San Francisco ...
 719 Die freien BSD-Varianten von Unix. c't April 1997, page 368ff.
 720
 721 BSD Release Announcements collection.
 722 URL: http://www.FreeBSD.org/releases/
 723
 724 BSD Hypertext Man Pages
 725 URL: http://www.FreeBSD.org/cgi/man.cgi
 726
 727 UNIX history graphing project
 728 URL: http://minnie.tuhs.org/Unix_History/index.html
 729
 730 UNIX history
 731 URL: http://www.levenez.com/unix/
 732
 733 James Howard: The BSD Family Tree
 734 URL: http://ezine.daemonnews.org/200104/bsd_family.html
 735 ("what are the differences between FreeBSD, NetBSD, and OpenBSD?")
 736
 737
 738 Acknowledgments
 739 ---------------
 740
 741 Josh Gilliam for suggestions, bug fixes, and finding very old
 742 original BSD announcements from Usenet or tapes.
 743
 744 Steven M. Schultz for providing 2.8BSD, 2.10BSD, 2.11BSD manual pages.
 745
 746 --
 747 Copyright (c) 1997-2012 Wolfram Schneider <wosch@FreeBSD.ORG>
 748 URL: http://svnweb.freebsd.org/base/head/share/misc/bsd-family-tree
 749
 750 $FreeBSD: head/share/misc/bsd-family-tree 291977 2015-12-08 01:16:53Z maxim $