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bsd-family-tree revision 1.57
      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  |                    |      |                 |               DragonFly 4.6.0
    348  *--FreeBSD           |      |            OpenBSD 6.0                  |
    349  |   11.0             |      |                 |                       |
    350  |                    |      |                 |                       |
    351  |                    |      |                 |                       |
    352 FreeBSD 12 -current   |  NetBSD -current  OpenBSD -current     DragonFly -current
    353  |                    |      |                 |                       |
    354  v                    v      v                 v                       v
    355 
    356 Time
    357 ----------------
    358 
    359 Time tolerance +/- 6 months, depending on which book/article you read; if it
    360 was the announcement in Usenet or if it was available as tape.
    361 
    362 [44B] McKusick, Marshall Kirk, Keith Bostic, Michael J Karels,
    363 	and John Quarterman. The Design and Implementation of
    364 	the 4.4BSD Operating System.
    365 [APL] Apple website [http://www.apple.com/macosx/]
    366 [BSDI] Berkeley Software Design, Inc.
    367 [DFB] DragonFlyBSD Project, The.
    368 [DOC] README, COPYRIGHT on tape.
    369 [FBD] FreeBSD Project, The.
    370 [KB]  Keith Bostic. BSD2.10 available from Usenix. comp.unix.sources,
    371 	Volume 11, Info 4, April, 1987.
    372 [KKK] Mike Karels, Kirk McKusick, and Keith Bostic. tahoe announcement.
    373 	comp.bugs.4bsd.ucb-fixes, June 15, 1988.
    374 [KSJ] Michael J. Karels, Carl F. Smith, and William F. Jolitz.
    375 	Changes in the Kernel in 2.9BSD. Second Berkeley Software
    376 	Distribution UNIX Version 2.9, July, 1983.
    377 [NBD] NetBSD Project, The.
    378 [OBD] OpenBSD Project, The.
    379 [QCU] Salus, Peter H. A quarter century of UNIX.
    380 [SMS] Steven M. Schultz. 2.11BSD, UNIX for the PDP-11.
    381 [TUHS] The Unix Historical Society.  http://minnie.tuhs.org/Unix_History/.
    382 [USE] Usenet announcement.
    383 [WRS] Wind River Systems, Inc.
    384 [dmr] Dennis Ritchie, via E-Mail
    385 
    386 Multics                 1965
    387 UNIX                    Summer 1969
    388 				DEC PDP-7
    389 First   Edition         1971-11-03 [QCU]
    390 				DEC PDP-11/20, Assembler
    391 Second  Edition         1972-06-12 [QCU]
    392 				10 UNIX installations
    393 Third   Edition         1973-02-xx [QCU]
    394 				Pipes, 16 installations
    395 Fourth  Edition         1973-11-xx [QCU]
    396 				rewriting in C effected,
    397                                 above 30 installations
    398 Fifth   Edition         1974-06-xx [QCU]
    399 				above 50 installations
    400 Sixth   Edition         1975-05-xx [QCU]
    401 				port to DEC Vax
    402 Seventh Edition         1979-01-xx [QCU]
    403 				first portable UNIX
    404 Eighth  Edition         1985-02-xx [QCU]
    405 				VAX 11/750, VAX 11/780 [dmr]
    406 				descended from 4.1c BSD [dmr]
    407 				descended from 4.1 BSD [44B]
    408 			scooping-out and replacement of the character-device
    409 			and networking part by the streams mechanism
    410 
    411 Ninth   Edition         1986-09-xx [QCU]
    412 Tenth   Edition         1989-10-xx [QCU]
    413 
    414 1BSD                    late 1977
    415 			1978-03-09 [QCU]
    416 				PDP-11, Pascal, ex(1)
    417 				30 free copies of 1BSD sent out
    418 				35 tapes sold for 50 USD [QCU]
    419 2BSD                    mid 1978 [QCU] 1979-05-10 [TUHS]
    420 				75 2BSD tapes shipped
    421 2.79BSD			1980-04-xx [TUHS]
    422 2.8BSD			1981-07-xx [KSJ]
    423 
    424 2.8.1BSD		1982-01-xx [QCU]
    425 				set of performance improvements
    426 2.9BSD			1983-07-xx [KSJ]
    427 2.9.1BSD                1983-11-xx [TUHS]
    428 2.9BSD-Seismo		1985-08-xx [SMS]
    429 2.10BSD			1987-04-xx [KKK]
    430 2.10.1BSD		1989-01-xx [SMS]
    431 2.11BSD			1992-02-xx [SMS]
    432 2.11BSD rev #430	1999-12-13 [SMS]
    433 
    434 32V			1978-1[01]-xx [QCU]
    435 3BSD                    late 1979 [QCU] March 1980 [TUHS]
    436 				virtual memory, page replacement,
    437                         	demand paging
    438 4.0BSD                  1980-10-xx
    439 4.1BSD                  1981-07-08 [DOC]
    440 4.1aBSD                 1982-04-xx
    441 				alpha release, 100 sites, networking [44B]
    442 4.1bBSD				internal release, fast filesystem [44B]
    443 4.1cBSD                 late 1982
    444 				beta release, IPC [44B]
    445 4.2BSD                  1983-09-xx [QCU]
    446                         1983-08-03 [DOC]
    447 4.3BSD                  1986-06-xx [QCU]
    448 			1986-04-05 [KB], [DOC]
    449 4.3BSD Tahoe            1988-06-15 [QCU], [DOC]
    450 4.3BSD NET/1            1988-11-xx [QCU]
    451                         1989-01-01 [DOC]
    452 4.3BSD Reno             1990-06-29 [QCU], [DOC]
    453 4.3BSD NET/2            1991-06-28 [QCU], [DOC]
    454 
    455 BSD/386 ALPHA		1991-12-xx [BSDI]
    456 				first code released to people outside BSDI
    457 386BSD 0.0              1992-02-xx [DOC]
    458 BSD/386 0.3.1	        1992-04-xx [BSDI] first ext. beta; B customers
    459 BSD/386 0.3.3		1992-06-xx [BSDI] first CDROM version
    460 386BSD 0.1              1992-07-28 [DOC]
    461 4.4BSD Alpha            1992-07-07
    462 BSD/386 0.9.3		1992-10-xx [BSDI]
    463 				first external gamma; G customers
    464 BSD/386 0.9.4		1992-12-xx [BSDI]
    465 				would have been 1.0 except for request
    466 				for preliminary injunction
    467 BSD/386 1.0 		1993-03-xx [BSDI]
    468 				injunction denied; first official release
    469 NetBSD 0.8              1993-04-20 [NBD]
    470 4.4BSD                  1993-06-01 [USE]
    471 NetBSD 0.9              1993-08-23 [NBD]
    472 FreeBSD 1.0		1993-11-01 [FBD]
    473 FreeBSD 1.0.2		1993-11-14 [FBD]
    474 				supersedes 1.0 13 days after release.
    475 BSD/386 1.1		1994-02-xx [BSDI]
    476 4.4BSD Lite             1994-03-01 [USE]
    477 FreeBSD 1.1		1994-05-07 [FBD]
    478 FreeBSD 1.1.5		1994-06-30 [FBD]
    479 FreeBSD 1.1.5.1		1994-07-05 [FBD]
    480 				supersedes 1.1.5 5 days after release.
    481 NetBSD 1.0              1994-10-26 [NBD]
    482 386BSD 1.0              1994-11-12 [USE]
    483 FreeBSD 2.0		1994-11-23 [FBD]
    484 BSD/OS 2.0		1995-01-xx [BSDI] 4.4 lite based
    485 FreeBSD 2.0.5		1995-06-10 [FBD]
    486 BSD/OS 2.0.1		1995-06-xx [BSDI]
    487 4.4BSD Lite Release 2	1995-06-xx [44B]
    488 				the true final distribution from the CSRG
    489 FreeBSD 2.1.0		1995-11-19 [FBD]
    490 NetBSD 1.1              1995-11-26 [NBD]
    491 BSD/OS 2.1		1996-01-xx [BSDI]
    492 FreeBSD 2.1.5		1996-07-14 [FBD]
    493 NetBSD 1.2              1996-10-04 [NBD]
    494 OpenBSD 2.0             1996-10-18 [OBD]
    495 FreeBSD 2.1.6		1996-11-16 [FBD]
    496 FreeBSD 2.1.6.1		1996-11-25 [FBD] (sendmail security release)
    497 Rhapsody		1997-xx-xx
    498 FreeBSD 2.1.7		1997-02-20 [FBD]
    499 BSD/OS 3.0		1997-02-xx [BSDI] 4.4 lite2 based
    500 FreeBSD 2.2.0		1997-03-16 [FBD]
    501 FreeBSD 2.2.1		1997-03-25 [FBD]
    502 FreeBSD 2.2.2		1997-05-16 [FBD]
    503 NetBSD 1.2.1            1997-05-20 [NBD] (patch release)
    504 OpenBSD 2.1             1997-06-01 [OBD]
    505 FreeBSD 2.2.5		1997-10-22 [FBD]
    506 OpenBSD 2.2             1997-12-01 [OBD]
    507 NetBSD 1.3              1998-01-04 [NBD]
    508 FreeBSD 2.2.6		1998-03-25 [FBD]
    509 NetBSD 1.3.1            1998-03-09 [NBD] (patch release)
    510 BSD/OS 3.1		1998-03-xx [BSDI]
    511 OpenBSD 2.3             1998-05-19 [OBD]
    512 NetBSD 1.3.2            1998-05-29 [NBD] (patch release)
    513 FreeBSD 2.2.7		1998-07-22 [FBD]
    514 BSD/OS 4.0		1998-08-xx [BSDI]
    515 				2-lock MP support, ELF executables
    516 FreeBSD 3.0		1998-10-16 [FBD]
    517 				FreeBSD-3.0 is a snapshot from -current,
    518 				while 3.1 and 3.2 are from 3.x-stable which
    519 				was branched quite some time after 3.0-release
    520 FreeBSD 2.2.8           1998-11-29 [FBD]
    521 OpenBSD 2.4             1998-12-01 [OBD]
    522 NetBSD 1.3.3            1998-12-23 [NBD] (patch release)
    523 FreeBSD 3.1		1999-02-15 [FBD]
    524 BSD/OS 4.0.1		1999-03-xx [BSDI]
    525 NetBSD 1.4              1999-05-12 [NBD]
    526 FreeBSD 3.2             1999-05-17 [FBD]
    527 OpenBSD 2.5             1999-05-19 [OBD]
    528 NetBSD 1.4.1            1999-08-26 [NBD] (patch release)
    529 FreeBSD 3.3             1999-09-17 [FBD]
    530 OpenBSD 2.6             1999-12-01 [OBD]
    531 FreeBSD 3.4             1999-12-20 [FBD]
    532 BSD/OS 4.1		1999-12-xx [BSDI]
    533 FreeBSD 4.0             2000-03-13 [FBD]
    534 NetBSD 1.4.2            2000-03-19 [NBD] (patch release)
    535 OpenBSD 2.7             2000-06-15 [OBD]
    536 FreeBSD 3.5		2000-06-24 [FBD]
    537 FreeBSD 4.1		2000-07-27 [FBD]
    538 FreeBSD 3.5.1		2000-07-28 [FBD]
    539 FreeBSD 4.1.1		2000-09-25 [FBD] (a network-only patch release)
    540 FreeBSD 4.2  		2000-11-21 [FBD]
    541 NetBSD 1.4.3		2000-11-25 [NBD] (patch release)
    542 BSD/OS 4.2		2000-11-29 [BSDI]
    543 OpenBSD 2.8		2000-12-01 [OBD]
    544 NetBSD 1.5              2000-12-06 [NBD]
    545 Mac OS X 10.0           2001-03-24 [APL]
    546 FreeBSD 4.3  		2001-04-20 [FBD]
    547 OpenBSD 2.9  		2001-06-01 [OBD]
    548 NetBSD 1.5.1		2001-07-11 [NBD] (patch release)
    549 NetBSD 1.5.2		2001-09-13 [NBD] (patch release)
    550 FreeBSD 4.4  		2001-09-18 [FBD]
    551 Mac OS X 10.1		2001-09-29 [APL]
    552 OpenBSD 3.0		2001-12-01 [OBD]
    553 FreeBSD 4.5  		2002-01-29 [FBD]
    554 BSD/OS 4.3		2002-03-14 [WRS]
    555 OpenBSD 3.1		2002-05-19 [OBD]
    556 FreeBSD 4.6  		2002-06-15 [FBD]
    557 NetBSD 1.5.3		2002-07-22 [NBD] (patch release)
    558 FreeBSD 4.6.2		2002-08-15 [FBD] (patch release)
    559 Mac OS X 10.2		2002-08-23 [APL]
    560 NetBSD 1.6		2002-09-14 [NBD]
    561 FreeBSD 4.7		2002-10-08 [FBD]
    562 OpenBSD 3.2		2002-11-01 [OBD]
    563 FreeBSD 5.0		2003-01-17 [FBD]
    564 				FreeBSD 5.0 is a separate branch off of
    565 				-current, similar to 3.0.
    566 FreeBSD 4.8		2003-04-03 [FBD]
    567 NetBSD 1.6.1		2003-04-21 [NBD] (patch release)
    568 OpenBSD 3.3		2003-05-01 [OBD]
    569 BSD/OS 5.0		2003-05-?? [WRS]
    570 FreeBSD 5.1		2003-06-09 [FBD]
    571 Mac OS X 10.3		2003-10-24 [APL]
    572 FreeBSD 4.9		2003-10-28 [FBD]
    573 BSD/OS 5.1 ISE		2003-10-?? [WRS] (final version)
    574 OpenBSD 3.4		2003-11-01 [OBD]
    575 FreeBSD 5.2		2004-01-12 [FBD]
    576 FreeBSD 5.2.1		2004-02-22 [FBD] (patch release)
    577 NetBSD 1.6.2		2004-03-01 [NBD] (patch release)
    578 OpenBSD 3.5		2004-04-01 [OBD]
    579 FreeBSD 4.10		2004-05-27 [FBD]
    580 DragonFly 1.0		2004-07-12 [DFB]
    581 OpenBSD 3.6		2004-10-29 [OBD]
    582 FreeBSD 5.3		2004-11-06 [FBD]
    583 NetBSD 2.0		2004-12-09 [NBD]
    584 FreeBSD 4.11		2005-01-25 [FBD]
    585 DragonFly 1.2.0		2005-04-08 [DFB]
    586 NetBSD 2.0.2		2005-04-14 [NBD] (security/critical release)
    587 Mac OS X 10.4		2005-04-29 [APL]
    588 FreeBSD 5.4		2005-05-09 [FBD]
    589 OpenBSD 3.7		2005-05-19 [OBD]
    590 NetBSD 2.0.3		2005-10-31 [NBD] (security/critical release)
    591 OpenBSD 3.8		2005-11-01 [OBD]
    592 FreeBSD 6.0		2005-11-01 [FBD]
    593 NetBSD 2.1		2005-11-02 [NBD]
    594 NetBSD 3.0		2005-12-23 [NBD]
    595 DragonFly 1.4.0		2006-01-08 [DFB]
    596 FreeBSD 2.2.9		2006-04-01 [FBD]
    597 OpenBSD 3.9		2006-05-01 [OBD]
    598 FreeBSD 6.1		2006-05-08 [FBD]
    599 FreeBSD 5.5		2006-05-25 [FBD]
    600 NetBSD 3.0.1		2006-07-24 [NBD] (security/critical release)
    601 DragonFly 1.6.0		2006-07-24 [DFB]
    602 OpenBSD 4.0		2006-11-01 [OBD]
    603 NetBSD 3.0.2		2006-11-04 [NBD] (security/critical release)
    604 NetBSD 3.1		2006-11-04 [NBD]
    605 FreeBSD 6.2		2007-01-15 [FBD]
    606 DragonFly 1.8.0		2007-01-30 [DFB]
    607 OpenBSD 4.1		2007-05-01 [OBD]
    608 DragonFly 1.10.0	2007-08-06 [DFB]
    609 Mac OS X 10.5		2007-10-26 [APL]
    610 OpenBSD 4.2		2007-11-01 [OBD]
    611 NetBSD 4.0		2007-12-19 [NBD]
    612 FreeBSD 6.3		2008-01-18 [FBD]
    613 DragonFly 1.12.0	2008-02-26 [DFB]
    614 FreeBSD 7.0		2008-02-27 [FBD]
    615 OpenBSD 4.3		2008-05-01 [OBD]
    616 DragonFly 2.0.0		2008-07-21 [DFB]
    617 OpenBSD 4.4		2008-11-01 [OBD]
    618 FreeBSD 6.4		2008-11-28 [FBD]
    619 FreeBSD 7.1		2009-01-04 [FBD]
    620 DragonFly 2.2.0		2009-02-17 [DFB]
    621 NetBSD 5.0		2009-04-29 [NBD]
    622 OpenBSD 4.5		2009-05-01 [OBD]
    623 FreeBSD 7.2		2009-05-04 [FBD]
    624 Mac OS X 10.6		2009-06-08 [APL]
    625 NetBSD 5.0.1		2009-08-02 [NBD] (security/critical release)
    626 DragonFly 2.4.0		2009-09-16 [DFB]
    627 OpenBSD 4.6		2009-10-18 [OBD]
    628 FreeBSD 8.0		2009-11-26 [FBD]
    629 NetBSD 5.0.2		2010-02-12 [NBD] (security/critical release)
    630 FreeBSD 7.3		2010-03-23 [FBD]
    631 DragonFly 2.6.0		2010-03-28 [DFB]
    632 OpenBSD 4.7		2010-05-19 [OBD]
    633 FreeBSD 8.1		2010-07-24 [FBD]
    634 DragonFly 2.8.2		2010-10-30 [DFB]
    635 OpenBSD 4.8		2010-11-01 [OBD]
    636 NetBSD 5.1		2010-11-19 [NBD]
    637 FreeBSD 7.4		2011-02-24 [FBD]
    638 FreeBSD 8.2		2011-02-24 [FBD]
    639 DragonFly 2.10.1	2011-04-26 [DFB]
    640 OpenBSD 4.9		2011-05-01 [OBD]
    641 Mac OS X 10.7		2011-07-20 [APL]
    642 OpenBSD 5.0		2011-11-01 [OBD]
    643 FreeBSD 9.0		2012-01-12 [FBD]
    644 NetBSD 5.1.2		2012-02-02 [NBD] (security/critical release)
    645 DragonFly 3.0.1		2012-02-21 [DFB]
    646 FreeBSD 8.3		2012-04-18 [FBD]
    647 OpenBSD 5.1		2012-05-01 [OBD]
    648 Mac OS X 10.8		2012-07-25 [APL]
    649 NetBSD 6.0		2012-10-17 [NBD]
    650 OpenBSD 5.2		2012-11-01 [OBD]
    651 DragonFly 3.2.1		2012-11-02 [DFB]
    652 NetBSD 5.2		2012-12-03 [NBD]
    653 NetBSD 6.0.1		2012-12-26 [NBD] (security/critical release)
    654 FreeBSD 9.1		2012-12-30 [FBD]
    655 DragonFly 3.4.1		2013-04-29 [DFB]
    656 OpenBSD 5.3		2013-05-01 [OBD]
    657 NetBSD 6.0.2		2013-05-18 [NBD] (security/critical release)
    658 NetBSD 6.1		2013-05-18 [NBD]
    659 FreeBSD 8.4		2013-06-07 [FBD]
    660 NetBSD 6.1.1		2013-08-22 [NBD]
    661 NetBSD 5.1.3		2013-09-29 [NBD]
    662 NetBSD 5.2.1		2013-09-29 [NBD]
    663 FreeBSD 9.2		2013-09-30 [FBD]
    664 NetBSD 6.0.3		2013-09-30 [NBD]
    665 NetBSD 6.1.2		2013-09-30 [NBD]
    666 Mac OS X 10.9		2013-10-22 [APL]
    667 OpenBSD 5.4		2013-11-01 [OBD]
    668 DragonFly 3.6.0 	2013-11-25 [DFB]
    669 FreeBSD 10.0		2014-01-20 [FBD]
    670 NetBSD 5.1.4		2014-01-25 [NBD]
    671 NetBSD 5.2.2		2014-01-25 [NBD]
    672 NetBSD 6.0.4		2014-01-25 [NBD]
    673 NetBSD 6.1.3		2014-01-25 [NBD]
    674 DragonFly 3.6.1 	2014-02-22 [DFB]
    675 DragonFly 3.6.2		2014-04-10 [DFB]
    676 NetBSD 6.0.5		2014-04-12 [NDB]
    677 NetBSD 6.1.4		2014-04-12 [NDB]
    678 OpenBSD 5.5		2014-05-01 [OBD]
    679 DragonFly 3.8.0		2014-06-04 [DFB]
    680 DragonFly 3.8.1		2014-06-16 [DFB]
    681 DragonFly 3.6.3		2014-06-17 [DFB]
    682 FreeBSD 9.3		2014-07-05 [FBD]
    683 DragonFly 3.8.2		2014-08-08 [DFB]
    684 NetBSD 6.1.5		2014-09-22 [NBD]
    685 Mac OS X 10.10		2014-10-16 [APL]
    686 OpenBSD 5.6		2014-11-01 [OBD]
    687 FreeBSD 10.1		2014-11-14 [FBD]
    688 DragonFly 4.0.1		2014-11-25 [DFB]
    689 DragonFly 4.0.2		2015-01-07 [DFB]
    690 DragonFly 4.0.3		2015-01-21 [DFB]
    691 DragonFly 4.0.4		2015-03-09 [DFB]
    692 DragonFly 4.0.5		2015-03-23 [DFB]
    693 OpenBSD 5.7		2015-05-01 [OBD]
    694 DragonFly 4.2.0		2015-06-29 [DFB]
    695 FreeBSD 10.2            2015-08-13 [FBD]
    696 NetBSD 7.0		2015-09-25 [NBD]
    697 OS X 10.11		2015-09-30 [APL]
    698 OpenBSD 5.8		2015-10-18 [OBD]
    699 DragonFly 4.4.1		2015-12-07 [DFB]
    700 OpenBSD 5.9		2016-03-29 [OBD]
    701 FreeBSD 10.3		2016-04-04 [FBD]
    702 DragonFly 4.6.0		2016-08-02 [DFB]
    703 OpenBSD 6.0		2016-09-01 [OBD]
    704 
    705 Bibliography
    706 ------------------------
    707 
    708 Leffler, Samuel J., Marshall Kirk McKusick, Michael J Karels and John
    709 Quarterman. The Design and Implementation of the 4.3BSD UNIX Operating
    710 System. Reading, Mass. Addison-Wesley, 1989. ISBN 0-201-06196-1
    711 
    712 Salus, Peter H. A quarter century of UNIX. Addison-Wesley Publishing
    713 Company, Inc., 1994. ISBN 0-201-54777-5
    714 
    715 McKusick, Marshall Kirk, Keith Bostic, Michael J Karels, and John
    716 Quarterman. The Design and Implementation of the 4.4BSD Operating
    717 System. Reading, Mass. Addison-Wesley, 1996. ISBN 0-201-54979-4
    718 
    719 McKusick, Marshall Kirk, George Neville-Neil. The Design and
    720 Implementation of the FreeBSD Operating System.
    721 Addison-Wesley Professional, Published: Aug 2, 2004. ISBN 0-201-70245-2
    722 
    723 McKusick, Marshall Kirk, George Neville-Neil, Robert Watson. The
    724 Design and Implementation of the FreeBSD Operating System, 2nd Edition.
    725 Pearson Education, Inc., 2014. ISBN 0-321-96897-2
    726 
    727 Doug McIlroy. Research Unix Reader.
    728 
    729 Michael G. Brown. The Role of BSD in the Development of Unix.
    730 Presented to the Tasmanian Unix Special Interest Group of the
    731 Australian Computer Society, Hobart, August 1993.
    732 
    733 Peter H. Salus. Unix at 25. Byte Magazine, October 1994.
    734 URL: http://www.byte.com/art/9410/sec8/art3.htm
    735 
    736 Andreas Klemm, Lars Kller. If you're going to San Francisco ...
    737 Die freien BSD-Varianten von Unix. c't April 1997, page 368ff.
    738 
    739 BSD Release Announcements collection.
    740 URL: http://www.FreeBSD.org/releases/
    741 
    742 BSD Hypertext Man Pages
    743 URL: http://www.FreeBSD.org/cgi/man.cgi
    744 
    745 UNIX history graphing project
    746 URL: http://minnie.tuhs.org/Unix_History/index.html
    747 
    748 UNIX history
    749 URL: http://www.levenez.com/unix/
    750 
    751 James Howard: The BSD Family Tree
    752 URL: http://ezine.daemonnews.org/200104/bsd_family.html
    753 ("what are the differences between FreeBSD, NetBSD, and OpenBSD?")
    754 
    755 
    756 Acknowledgments
    757 ---------------
    758 
    759 Josh Gilliam for suggestions, bug fixes, and finding very old
    760 original BSD announcements from Usenet or tapes.
    761 
    762 Steven M. Schultz for providing 2.8BSD, 2.10BSD, 2.11BSD manual pages.
    763 
    764 --
    765 Copyright (c) 1997-2012 Wolfram Schneider <wosch (a] FreeBSD.ORG>
    766 URL: http://svnweb.freebsd.org/base/head/share/misc/bsd-family-tree
    767 
    768 $FreeBSD: head/share/misc/bsd-family-tree 305215 2016-09-01 17:05:54Z maxim $
    769 $NetBSD: bsd-family-tree,v 1.57 2016/09/29 14:32:51 sevan Exp $
    770