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  |     |            macOS  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   | | NetBSD 7.0.2   |                       |
 353  |     |      |       |     | |                |                       |
 354  |     |      |       |     | *- NetBSD 7.1    |                       |
 355  |     |      |     macOS   |                  |               DragonFly 4.8.0
 356  |     |      |     10.13   |             OpenBSD 6.1                  |
 357  |  FreeBSD   |       |     |                  |               DragonFly 5.0.0
 358  |   11.1  FreeBSD    |     |                  |                       |
 359  |     |    10.4      |     |             OpenBSD 6.2          DragonFly 5.0.1
 360  |     |              |     |                  |                       |
 361  |     |              |     |                  |               DragonFly 5.0.2
 362  |     |              |     |                  |                       |
 363  |     |              |     |                  |                       |
 364  |     v              |     |                  |                       |
 365  |                    |     |                  |                       |
 366 FreeBSD 12 -current   | NetBSD -current   OpenBSD -current    DragonFly -current
 367  |                    |     |                  |                       |
 368  v                    v     v                  v                       v
 369
 370 Time
 371 ----------------
 372
 373 Time tolerance +/- 6 months, depending on which book/article you read; if it
 374 was the announcement in Usenet or if it was available as tape.
 375
 376 [44B] McKusick, Marshall Kirk, Keith Bostic, Michael J Karels,
 377         and John Quarterman. The Design and Implementation of
 378         the 4.4BSD Operating System.
 379 [APL] Apple website [https://www.apple.com/macosx/]
 380 [BSDI] Berkeley Software Design, Inc.
 381 [DFB] DragonFlyBSD Project, The.
 382 [DOC] README, COPYRIGHT on tape.
 383 [FBD] FreeBSD Project, The.
 384 [KB]  Keith Bostic. BSD2.10 available from Usenix. comp.unix.sources,
 385         Volume 11, Info 4, April, 1987.
 386 [KKK] Mike Karels, Kirk McKusick, and Keith Bostic. tahoe announcement.
 387         comp.bugs.4bsd.ucb-fixes, June 15, 1988.
 388 [KSJ] Michael J. Karels, Carl F. Smith, and William F. Jolitz.
 389         Changes in the Kernel in 2.9BSD. Second Berkeley Software
 390         Distribution UNIX Version 2.9, July, 1983.
 391 [NBD] NetBSD Project, The.
 392 [OBD] OpenBSD Project, The.
 393 [QCU] Salus, Peter H. A quarter century of UNIX.
 394 [SMS] Steven M. Schultz. 2.11BSD, UNIX for the PDP-11.
 395 [TUHS] The Unix Historical Society.  http://minnie.tuhs.org/Unix_History/.
 396 [USE] Usenet announcement.
 397 [WRS] Wind River Systems, Inc.
 398 [dmr] Dennis Ritchie, via E-Mail
 399
 400 Multics                 1965
 401 UNIX                    Summer 1969
 402                                 DEC PDP-7
 403 First   Edition         1971-11-03 [QCU]
 404                                 DEC PDP-11/20, Assembler
 405 Second  Edition         1972-06-12 [QCU]
 406                                 10 UNIX installations
 407 Third   Edition         1973-02-xx [QCU]
 408                                 Pipes, 16 installations
 409 Fourth  Edition         1973-11-xx [QCU]
 410                                 rewriting in C effected,
 411                                 above 30 installations
 412 Fifth   Edition         1974-06-xx [QCU]
 413                                 above 50 installations
 414 Sixth   Edition         1975-05-xx [QCU]
 415                                 port to DEC Vax
 416 Seventh Edition         1979-01-xx [QCU] 1979-01-10 [TUHS]
 417                                 first portable UNIX
 418 Eighth  Edition         1985-02-xx [QCU]
 419                                 VAX 11/750, VAX 11/780 [dmr]
 420                                 descended from 4.1c BSD [dmr]
 421                                 descended from 4.1 BSD [44B]
 422                         scooping-out and replacement of the character-device
 423                         and networking part by the streams mechanism
 424
 425 Ninth   Edition         1986-09-xx [QCU]
 426 Tenth   Edition         1989-10-xx [QCU]
 427
 428 1BSD                    late 1977
 429                         1978-03-09 [QCU]
 430                                 PDP-11, Pascal, ex(1)
 431                                 30 free copies of 1BSD sent out
 432                                 35 tapes sold for 50 USD [QCU]
 433 2BSD                    mid 1978 [QCU] 1979-05-10 [TUHS]
 434                                 75 2BSD tapes shipped
 435 2.79BSD                 1980-04-xx [TUHS]
 436 2.8BSD                  1981-07-xx [KSJ]
 437
 438 2.8.1BSD                1982-01-xx [QCU]
 439                                 set of performance improvements
 440 2.9BSD                  1983-07-xx [KSJ]
 441 2.9.1BSD                1983-11-xx [TUHS]
 442 2.9BSD-Seismo           1985-08-xx [SMS]
 443 2.10BSD                 1987-04-xx [KKK]
 444 2.10.1BSD               1989-01-xx [SMS]
 445 2.11BSD                 1992-02-xx [SMS]
 446 2.11BSD rev #430        1999-12-13 [SMS]
 447
 448 32V                     1978-1[01]-xx [QCU] 1979-03-26 [TUHS]
 449 3BSD                    late 1979 [QCU] March 1980 [TUHS]
 450                                 virtual memory, page replacement,
 451                                 demand paging
 452 4.0BSD                  1980-10-xx
 453 4.1BSD                  1981-07-08 [DOC]
 454 4.1aBSD                 1982-04-xx
 455                                 alpha release, 100 sites, networking [44B]
 456 4.1bBSD                         internal release, fast filesystem [44B]
 457 4.1cBSD                 late 1982
 458                                 beta release, IPC [44B]
 459 4.2BSD                  1983-09-xx [QCU]
 460                         1983-08-03 [DOC]
 461 4.3BSD                  1986-06-xx [QCU]
 462                         1986-04-05 [KB], [DOC]
 463 4.3BSD Tahoe            1988-06-15 [QCU], [DOC]
 464 4.3BSD NET/1            1988-11-xx [QCU]
 465                         1989-01-01 [DOC]
 466 4.3BSD Reno             1990-06-29 [QCU], [DOC]
 467 4.3BSD NET/2            1991-06-28 [QCU], [DOC]
 468
 469 BSD/386 ALPHA           1991-12-xx [BSDI]
 470                                 first code released to people outside BSDI
 471 386BSD 0.0              1992-02-xx [DOC]
 472 BSD/386 0.3.1           1992-04-xx [BSDI] first ext. beta; B customers
 473 BSD/386 0.3.3           1992-06-xx [BSDI] first CDROM version
 474 386BSD 0.1              1992-07-28 [DOC]
 475 4.4BSD Alpha            1992-07-07
 476 BSD/386 0.9.3           1992-10-xx [BSDI]
 477                                 first external gamma; G customers
 478 BSD/386 0.9.4           1992-12-xx [BSDI]
 479                                 would have been 1.0 except for request
 480                                 for preliminary injunction
 481 BSD/386 1.0             1993-03-xx [BSDI]
 482                                 injunction denied; first official release
 483 NetBSD 0.8              1993-04-20 [NBD]
 484 4.4BSD                  1993-06-01 [USE]
 485 NetBSD 0.9              1993-08-23 [NBD]
 486 FreeBSD 1.0             1993-11-01 [FBD]
 487 FreeBSD 1.0.2           1993-11-14 [FBD]
 488                                 supersedes 1.0 13 days after release.
 489 BSD/386 1.1             1994-02-xx [BSDI]
 490 4.4BSD Lite             1994-03-01 [USE]
 491 FreeBSD 1.1             1994-05-07 [FBD]
 492 FreeBSD 1.1.5           1994-06-30 [FBD]
 493 FreeBSD 1.1.5.1         1994-07-05 [FBD]
 494                                 supersedes 1.1.5 5 days after release.
 495 NetBSD 1.0              1994-10-26 [NBD]
 496 386BSD 1.0              1994-11-12 [USE]
 497 FreeBSD 2.0             1994-11-23 [FBD]
 498 BSD/OS 2.0              1995-01-xx [BSDI] 4.4 lite based
 499 FreeBSD 2.0.5           1995-06-10 [FBD]
 500 BSD/OS 2.0.1            1995-06-xx [BSDI]
 501 4.4BSD Lite Release 2   1995-06-xx [44B]
 502                                 the true final distribution from the CSRG
 503 FreeBSD 2.1.0           1995-11-19 [FBD]
 504 NetBSD 1.1              1995-11-26 [NBD]
 505 BSD/OS 2.1              1996-01-xx [BSDI]
 506 FreeBSD 2.1.5           1996-07-14 [FBD]
 507 NetBSD 1.2              1996-10-04 [NBD]
 508 OpenBSD 2.0             1996-10-18 [OBD]
 509 FreeBSD 2.1.6           1996-11-16 [FBD]
 510 FreeBSD 2.1.6.1         1996-11-25 [FBD] (sendmail security release)
 511 Rhapsody                1997-xx-xx
 512 FreeBSD 2.1.7           1997-02-20 [FBD]
 513 BSD/OS 3.0              1997-02-xx [BSDI] 4.4 lite2 based
 514 FreeBSD 2.2.0           1997-03-16 [FBD]
 515 FreeBSD 2.2.1           1997-03-25 [FBD]
 516 FreeBSD 2.2.2           1997-05-16 [FBD]
 517 NetBSD 1.2.1            1997-05-20 [NBD] (patch release)
 518 OpenBSD 2.1             1997-06-01 [OBD]
 519 FreeBSD 2.2.5           1997-10-22 [FBD]
 520 OpenBSD 2.2             1997-12-01 [OBD]
 521 NetBSD 1.3              1998-01-04 [NBD]
 522 FreeBSD 2.2.6           1998-03-25 [FBD]
 523 NetBSD 1.3.1            1998-03-09 [NBD] (patch release)
 524 BSD/OS 3.1              1998-03-xx [BSDI]
 525 OpenBSD 2.3             1998-05-19 [OBD]
 526 NetBSD 1.3.2            1998-05-29 [NBD] (patch release)
 527 FreeBSD 2.2.7           1998-07-22 [FBD]
 528 BSD/OS 4.0              1998-08-xx [BSDI]
 529                                 2-lock MP support, ELF executables
 530 FreeBSD 3.0             1998-10-16 [FBD]
 531                                 FreeBSD-3.0 is a snapshot from -current,
 532                                 while 3.1 and 3.2 are from 3.x-stable which
 533                                 was branched quite some time after 3.0-release
 534 FreeBSD 2.2.8           1998-11-29 [FBD]
 535 OpenBSD 2.4             1998-12-01 [OBD]
 536 NetBSD 1.3.3            1998-12-23 [NBD] (patch release)
 537 FreeBSD 3.1             1999-02-15 [FBD]
 538 BSD/OS 4.0.1            1999-03-xx [BSDI]
 539 NetBSD 1.4              1999-05-12 [NBD]
 540 FreeBSD 3.2             1999-05-17 [FBD]
 541 OpenBSD 2.5             1999-05-19 [OBD]
 542 NetBSD 1.4.1            1999-08-26 [NBD] (patch release)
 543 FreeBSD 3.3             1999-09-17 [FBD]
 544 OpenBSD 2.6             1999-12-01 [OBD]
 545 FreeBSD 3.4             1999-12-20 [FBD]
 546 BSD/OS 4.1              1999-12-xx [BSDI]
 547 FreeBSD 4.0             2000-03-13 [FBD]
 548 NetBSD 1.4.2            2000-03-19 [NBD] (patch release)
 549 OpenBSD 2.7             2000-06-15 [OBD]
 550 FreeBSD 3.5             2000-06-24 [FBD]
 551 FreeBSD 4.1             2000-07-27 [FBD]
 552 FreeBSD 3.5.1           2000-07-28 [FBD]
 553 FreeBSD 4.1.1           2000-09-25 [FBD] (a network-only patch release)
 554 FreeBSD 4.2             2000-11-21 [FBD]
 555 NetBSD 1.4.3            2000-11-25 [NBD] (patch release)
 556 BSD/OS 4.2              2000-11-29 [BSDI]
 557 OpenBSD 2.8             2000-12-01 [OBD]
 558 NetBSD 1.5              2000-12-06 [NBD]
 559 Mac OS X 10.0           2001-03-24 [APL]
 560 FreeBSD 4.3             2001-04-20 [FBD]
 561 OpenBSD 2.9             2001-06-01 [OBD]
 562 NetBSD 1.5.1            2001-07-11 [NBD] (patch release)
 563 NetBSD 1.5.2            2001-09-13 [NBD] (patch release)
 564 FreeBSD 4.4             2001-09-18 [FBD]
 565 Mac OS X 10.1           2001-09-29 [APL]
 566 OpenBSD 3.0             2001-12-01 [OBD]
 567 FreeBSD 4.5             2002-01-29 [FBD]
 568 BSD/OS 4.3              2002-03-14 [WRS]
 569 OpenBSD 3.1             2002-05-19 [OBD]
 570 FreeBSD 4.6             2002-06-15 [FBD]
 571 NetBSD 1.5.3            2002-07-22 [NBD] (patch release)
 572 FreeBSD 4.6.2           2002-08-15 [FBD] (patch release)
 573 Mac OS X 10.2           2002-08-23 [APL]
 574 NetBSD 1.6              2002-09-14 [NBD]
 575 FreeBSD 4.7             2002-10-08 [FBD]
 576 OpenBSD 3.2             2002-11-01 [OBD]
 577 FreeBSD 5.0             2003-01-17 [FBD]
 578                                 FreeBSD 5.0 is a separate branch off of
 579                                 -current, similar to 3.0.
 580 FreeBSD 4.8             2003-04-03 [FBD]
 581 NetBSD 1.6.1            2003-04-21 [NBD] (patch release)
 582 OpenBSD 3.3             2003-05-01 [OBD]
 583 BSD/OS 5.0              2003-05-?? [WRS]
 584 FreeBSD 5.1             2003-06-09 [FBD]
 585 Mac OS X 10.3           2003-10-24 [APL]
 586 FreeBSD 4.9             2003-10-28 [FBD]
 587 BSD/OS 5.1 ISE          2003-10-?? [WRS] (final version)
 588 OpenBSD 3.4             2003-11-01 [OBD]
 589 FreeBSD 5.2             2004-01-12 [FBD]
 590 FreeBSD 5.2.1           2004-02-22 [FBD] (patch release)
 591 NetBSD 1.6.2            2004-03-01 [NBD] (patch release)
 592 OpenBSD 3.5             2004-04-01 [OBD]
 593 FreeBSD 4.10            2004-05-27 [FBD]
 594 DragonFly 1.0           2004-07-12 [DFB]
 595 OpenBSD 3.6             2004-10-29 [OBD]
 596 FreeBSD 5.3             2004-11-06 [FBD]
 597 NetBSD 2.0              2004-12-09 [NBD]
 598 FreeBSD 4.11            2005-01-25 [FBD]
 599 DragonFly 1.2.0         2005-04-08 [DFB]
 600 NetBSD 2.0.2            2005-04-14 [NBD] (security/critical release)
 601 Mac OS X 10.4           2005-04-29 [APL]
 602 FreeBSD 5.4             2005-05-09 [FBD]
 603 OpenBSD 3.7             2005-05-19 [OBD]
 604 NetBSD 2.0.3            2005-10-31 [NBD] (security/critical release)
 605 OpenBSD 3.8             2005-11-01 [OBD]
 606 FreeBSD 6.0             2005-11-01 [FBD]
 607 NetBSD 2.1              2005-11-02 [NBD]
 608 NetBSD 3.0              2005-12-23 [NBD]
 609 DragonFly 1.4.0         2006-01-08 [DFB]
 610 FreeBSD 2.2.9           2006-04-01 [FBD]
 611 OpenBSD 3.9             2006-05-01 [OBD]
 612 FreeBSD 6.1             2006-05-08 [FBD]
 613 FreeBSD 5.5             2006-05-25 [FBD]
 614 NetBSD 3.0.1            2006-07-24 [NBD] (security/critical release)
 615 DragonFly 1.6.0         2006-07-24 [DFB]
 616 OpenBSD 4.0             2006-11-01 [OBD]
 617 NetBSD 3.0.2            2006-11-04 [NBD] (security/critical release)
 618 NetBSD 3.1              2006-11-04 [NBD]
 619 FreeBSD 6.2             2007-01-15 [FBD]
 620 DragonFly 1.8.0         2007-01-30 [DFB]
 621 OpenBSD 4.1             2007-05-01 [OBD]
 622 DragonFly 1.10.0        2007-08-06 [DFB]
 623 Mac OS X 10.5           2007-10-26 [APL]
 624 OpenBSD 4.2             2007-11-01 [OBD]
 625 NetBSD 4.0              2007-12-19 [NBD]
 626 FreeBSD 6.3             2008-01-18 [FBD]
 627 DragonFly 1.12.0        2008-02-26 [DFB]
 628 FreeBSD 7.0             2008-02-27 [FBD]
 629 OpenBSD 4.3             2008-05-01 [OBD]
 630 DragonFly 2.0.0         2008-07-21 [DFB]
 631 OpenBSD 4.4             2008-11-01 [OBD]
 632 FreeBSD 6.4             2008-11-28 [FBD]
 633 FreeBSD 7.1             2009-01-04 [FBD]
 634 DragonFly 2.2.0         2009-02-17 [DFB]
 635 NetBSD 5.0              2009-04-29 [NBD]
 636 OpenBSD 4.5             2009-05-01 [OBD]
 637 FreeBSD 7.2             2009-05-04 [FBD]
 638 Mac OS X 10.6           2009-06-08 [APL]
 639 NetBSD 5.0.1            2009-08-02 [NBD] (security/critical release)
 640 DragonFly 2.4.0         2009-09-16 [DFB]
 641 OpenBSD 4.6             2009-10-18 [OBD]
 642 FreeBSD 8.0             2009-11-26 [FBD]
 643 NetBSD 5.0.2            2010-02-12 [NBD] (security/critical release)
 644 FreeBSD 7.3             2010-03-23 [FBD]
 645 DragonFly 2.6.0         2010-03-28 [DFB]
 646 OpenBSD 4.7             2010-05-19 [OBD]
 647 FreeBSD 8.1             2010-07-24 [FBD]
 648 DragonFly 2.8.2         2010-10-30 [DFB]
 649 OpenBSD 4.8             2010-11-01 [OBD]
 650 NetBSD 5.1              2010-11-19 [NBD]
 651 FreeBSD 7.4             2011-02-24 [FBD]
 652 FreeBSD 8.2             2011-02-24 [FBD]
 653 DragonFly 2.10.1        2011-04-26 [DFB]
 654 OpenBSD 4.9             2011-05-01 [OBD]
 655 Mac OS X 10.7           2011-07-20 [APL]
 656 OpenBSD 5.0             2011-11-01 [OBD]
 657 FreeBSD 9.0             2012-01-12 [FBD]
 658 NetBSD 5.1.2            2012-02-02 [NBD] (security/critical release)
 659 DragonFly 3.0.1         2012-02-21 [DFB]
 660 FreeBSD 8.3             2012-04-18 [FBD]
 661 OpenBSD 5.1             2012-05-01 [OBD]
 662 Mac OS X 10.8           2012-07-25 [APL]
 663 NetBSD 6.0              2012-10-17 [NBD]
 664 OpenBSD 5.2             2012-11-01 [OBD]
 665 DragonFly 3.2.1         2012-11-02 [DFB]
 666 NetBSD 5.2              2012-12-03 [NBD]
 667 NetBSD 6.0.1            2012-12-26 [NBD] (security/critical release)
 668 FreeBSD 9.1             2012-12-30 [FBD]
 669 DragonFly 3.4.1         2013-04-29 [DFB]
 670 OpenBSD 5.3             2013-05-01 [OBD]
 671 NetBSD 6.0.2            2013-05-18 [NBD] (security/critical release)
 672 NetBSD 6.1              2013-05-18 [NBD]
 673 FreeBSD 8.4             2013-06-07 [FBD]
 674 NetBSD 6.1.1            2013-08-22 [NBD]
 675 NetBSD 5.1.3            2013-09-29 [NBD]
 676 NetBSD 5.2.1            2013-09-29 [NBD]
 677 FreeBSD 9.2             2013-09-30 [FBD]
 678 NetBSD 6.0.3            2013-09-30 [NBD]
 679 NetBSD 6.1.2            2013-09-30 [NBD]
 680 Mac OS X 10.9           2013-10-22 [APL]
 681 OpenBSD 5.4             2013-11-01 [OBD]
 682 DragonFly 3.6.0         2013-11-25 [DFB]
 683 FreeBSD 10.0            2014-01-20 [FBD]
 684 NetBSD 5.1.4            2014-01-25 [NBD]
 685 NetBSD 5.2.2            2014-01-25 [NBD]
 686 NetBSD 6.0.4            2014-01-25 [NBD]
 687 NetBSD 6.1.3            2014-01-25 [NBD]
 688 DragonFly 3.6.1         2014-02-22 [DFB]
 689 DragonFly 3.6.2         2014-04-10 [DFB]
 690 NetBSD 6.0.5            2014-04-12 [NDB]
 691 NetBSD 6.1.4            2014-04-12 [NDB]
 692 OpenBSD 5.5             2014-05-01 [OBD]
 693 DragonFly 3.8.0         2014-06-04 [DFB]
 694 DragonFly 3.8.1         2014-06-16 [DFB]
 695 DragonFly 3.6.3         2014-06-17 [DFB]
 696 FreeBSD 9.3             2014-07-05 [FBD]
 697 DragonFly 3.8.2         2014-08-08 [DFB]
 698 NetBSD 6.1.5            2014-09-22 [NBD]
 699 Mac OS X 10.10          2014-10-16 [APL]
 700 OpenBSD 5.6             2014-11-01 [OBD]
 701 FreeBSD 10.1            2014-11-14 [FBD]
 702 DragonFly 4.0.1         2014-11-25 [DFB]
 703 DragonFly 4.0.2         2015-01-07 [DFB]
 704 DragonFly 4.0.3         2015-01-21 [DFB]
 705 DragonFly 4.0.4         2015-03-09 [DFB]
 706 DragonFly 4.0.5         2015-03-23 [DFB]
 707 OpenBSD 5.7             2015-05-01 [OBD]
 708 DragonFly 4.2.0         2015-06-29 [DFB]
 709 FreeBSD 10.2            2015-08-13 [FBD]
 710 NetBSD 7.0              2015-09-25 [NBD]
 711 OS X 10.11              2015-09-30 [APL]
 712 OpenBSD 5.8             2015-10-18 [OBD]
 713 DragonFly 4.4.1         2015-12-07 [DFB]
 714 OpenBSD 5.9             2016-03-29 [OBD]
 715 FreeBSD 10.3            2016-04-04 [FBD]
 716 NetBSD 7.0.1            2016-05-22 [NBD]
 717 DragonFly 4.6.0         2016-08-02 [DFB]
 718 OpenBSD 6.0             2016-09-01 [OBD]
 719 macOS 10.12             2016-09-20 [APL]
 720 NetBSD 7.0.2            2016-10-21 [NBD]
 721 FreeBSD 11.0            2016-10-10 [FBD]
 722 NetBSD 7.1              2017-03-11 [NBD]
 723 DragonFly 4.8.0         2017-03-27 [DFB]
 724 OpenBSD 6.1             2017-04-11 [OBD]
 725 FreeBSD 11.1            2017-07-26 [FBD]
 726 macOS 10.13             2017-09-25 [APL]
 727 FreeBSD 10.4            2017-10-03 [FBD]
 728 OpenBSD 6.2             2017-10-09 [OBD]
 729 DragonFly 5.0.0         2017-10-16 [DFB]
 730 DragonFly 5.0.1         2017-11-06 [DFB]
 731 DragonFly 5.0.2         2017-12-04 [DFB]
 732
 733 Bibliography
 734 ------------------------
 735
 736 Leffler, Samuel J., Marshall Kirk McKusick, Michael J Karels and John
 737 Quarterman. The Design and Implementation of the 4.3BSD UNIX Operating
 738 System. Reading, Mass. Addison-Wesley, 1989. ISBN 0-201-06196-1
 739
 740 Salus, Peter H. A quarter century of UNIX. Addison-Wesley Publishing
 741 Company, Inc., 1994. ISBN 0-201-54777-5
 742
 743 McKusick, Marshall Kirk, Keith Bostic, Michael J Karels, and John
 744 Quarterman. The Design and Implementation of the 4.4BSD Operating
 745 System. Reading, Mass. Addison-Wesley, 1996. ISBN 0-201-54979-4
 746
 747 McKusick, Marshall Kirk, George Neville-Neil. The Design and
 748 Implementation of the FreeBSD Operating System.
 749 Addison-Wesley Professional, Published: Aug 2, 2004. ISBN 0-201-70245-2
 750
 751 McKusick, Marshall Kirk, George Neville-Neil, Robert Watson. The
 752 Design and Implementation of the FreeBSD Operating System, 2nd Edition.
 753 Pearson Education, Inc., 2014. ISBN 0-321-96897-2
 754
 755 Doug McIlroy. Research Unix Reader.
 756
 757 Michael G. Brown. The Role of BSD in the Development of Unix.
 758 Presented to the Tasmanian Unix Special Interest Group of the
 759 Australian Computer Society, Hobart, August 1993.
 760
 761 Peter H. Salus. Unix at 25. Byte Magazine, October 1994.
 762 URL: http://www.byte.com/art/9410/sec8/art3.htm
 763
 764 Andreas Klemm, Lars Köller. If you're going to San Francisco ...
 765 Die freien BSD-Varianten von Unix. c't April 1997, page 368ff.
 766
 767 BSD Release Announcements collection.
 768 URL: https://www.FreeBSD.org/releases/
 769
 770 BSD Hypertext Man Pages
 771 URL: https://www.FreeBSD.org/cgi/man.cgi
 772
 773 UNIX history graphing project
 774 URL: http://minnie.tuhs.org/Unix_History/index.html
 775
 776 UNIX history
 777 URL: http://www.levenez.com/unix/
 778
 779 James Howard: The BSD Family Tree
 780 URL: http://ezine.daemonnews.org/200104/bsd_family.html
 781 ("what are the differences between FreeBSD, NetBSD, and OpenBSD?")
 782
 783
 784 Acknowledgments
 785 ---------------
 786
 787 Josh Gilliam for suggestions, bug fixes, and finding very old
 788 original BSD announcements from Usenet or tapes.
 789
 790 Steven M. Schultz for providing 2.8BSD, 2.10BSD, 2.11BSD manual pages.
 791
 792 --
 793 Copyright (c) 1997-2012 Wolfram Schneider <wosch@FreeBSD.ORG>
 794 URL: http://svnweb.freebsd.org/base/head/share/misc/bsd-family-tree
 795
 796 $FreeBSD$
 797 $NetBSD: bsd-family-tree,v 1.62 2017/12/14 10:34:06 maya Exp $