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  1. The UNIX system family tree: Research and BSD
    2. 

  2. ---------------------------------------------
    3. 

  3. 

  4. First Edition (V1)
    5. 

  5.      |
    6. 

  6. Second Edition (V2)
    7. 

  7.      |
    8. 

  8. Third Edition (V3)
    9. 

  9.      |
    10. 

  10. Fourth Edition (V4)
    11. 

  11.      |
    12. 

  12. Fifth Edition (V5)
    13. 

  13.      |
    14. 

  14. Sixth Edition (V6) -----*
    15. 

  15.        \                |
    16. 

  16.         \               |
    17. 

  17.          \              |
    18. 

  18. Seventh Edition (V7)    |
    19. 

  19.             \           |
    20. 

  20.              \        1BSD
    21. 

  21.              32V        |
    22. 

  22.                \      2BSD---------------*
    23. 

  23.                 \    /                   |
    24. 

  24.                  \  /                    |
    25. 

  25.                   \/                     |
    26. 

  26.                  3BSD                    |
    27. 

  27.                   |                      |
    28. 

  28.                4.0BSD                2.79BSD
    29. 

  29.                   |                      |
    30. 

  30.                4.1BSD --------------> 2.8BSD
    31. 

  31.                   |                      |
    32. 

  32.               4.1aBSD -----------\       |
    33. 

  33.                   |                \     |
    34. 

  34.               4.1bBSD                \   |
    35. 

  35.                   |                    \ |
    36. 

  36.       *------ 4.1cBSD --------------> 2.9BSD
    37. 

  37.      /            |                      |
    38. 

  38. Eighth Edition    |                   2.9BSD-Seismo
    39. 

  39.      |            |                      |
    40. 

  40.      +----<--- 4.2BSD               2.9.1BSD
    41. 

  41.      |            |                      |
    42. 

  42.      +----<--- 4.3BSD -------------> 2.10BSD
    43. 

  43.      |            |               /      |
    44. 

  44. Ninth Edition     |              / 2.10.1BSD
    45. 

  45.      |         4.3BSD Tahoe-----+        |
    46. 

  46.      |            |              \       |
    47. 

  47.      |            |                \     |
    48. 

  48.      v            |                  2.11BSD
    49. 

  49. Tenth Edition     |                      |
    50. 

  50.                   |                  2.11BSD rev #430
    51. 

  51.                4.3BSD NET/1              |
    52. 

  52.                   |                      v
    53. 

  53.                4.3BSD Reno
    54. 

  54.                   |
    55. 

  55.    *---------- 4.3BSD NET/2 -------------------+-------------*
    56. 

  56.    |                    |                      |             |
    57. 

  57. 386BSD 0.0              |                      |           BSD/386 ALPHA
    58. 

  58.    |                    |                      |             |
    59. 

  59. 386BSD 0.1 ------------>+                      |           BSD/386 0.3.[13]
    60. 

  60.    |     \              |                  4.4BSD Alpha      |
    61. 

  61.    |     386BSD 1.0     |                      |           BSD/386 0.9.[34]
    62. 

  62.    |                    |                  4.4BSD            |
    63. 

  63.    |                    |                    / |             |
    64. 

  64.    |                    |   4.4BSD-Encumbered  |             |
    65. 

  65.    |                 NetBSD 0.8                |           BSD/386 1.0
    66. 

  66.    |                    |                      |             |
    67. 

  67. FreeBSD 1.0          NetBSD 0.9                |           BSD/386 1.1
    68. 

  68.    |                    |           .----- 4.4BSD Lite       |
    69. 

  69. FreeBSD 1.1             |          /   /       |     \       |
    70. 

  70.    |                    |         /   /        |      \      |
    71. 

  71. FreeBSD 1.1.5       .---|--------'   /         |       \     |
    72. 

  72.    |               /    |           /          |        \    |
    73. 

  73. FreeBSD 1.1.5.1   /     |          /           |         \   |
    74. 

  74.    |             /   NetBSD 1.0 <-'            |          \  |
    75. 

  75.    |            /       |                      |           \ |
    76. 

  76. FreeBSD 2.0 <--'        |                      |           BSD/OS 2.0
    77. 

  77.    |                     \                     |             |
    78. 

  78. FreeBSD 2.0.5             \                    |           BSD/OS 2.0.1
    79. 

  79.    |                 .-----\------------- 4.4BSD Lite2       |
    80. 

  80.    |                 |      \             |  |   |   |       |
    81. 

  81.    |                 | .-----|------Rhapsody |   |   |       |
    82. 

  82.    |                 | |     |        NetBSD 1.3 |   |       |
    83. 

  83.    |                 | |     |           OpenBSD 2.3 |       |
    84. 

  84.    |                 | |     |                BSD/OS 3.0     |
    85. 

  85. FreeBSD 2.1          | |     |                               |
    86. 

  86.  |   |               | |  NetBSD 1.1 ------.               BSD/OS 2.1
    87. 

  87.  | FreeBSD 2.1.5     | |     |              \                |
    88. 

  88.  |     |             | |  NetBSD 1.2         \             BSD/OS 3.0
    89. 

  89.  | FreeBSD 2.1.6     | |     |  \          OpenBSD 2.0       |
    90. 

  90.  |     |             | |     |   \             |             |
    91. 

  91.  | FreeBSD 2.1.6.1   | |     |    \            |             |
    92. 

  92.  |     |             | |     |     \           |             |
    93. 

  93.  | FreeBSD 2.1.7     | |     |      |          |             |
    94. 

  94.  |     |             | |     |  NetBSD 1.2.1   |             |
    95. 

  95.  | FreeBSD 2.1.7.1   | |     |                 |             |
    96. 

  96.  |                   | |     |                 |             |
    97. 

  97.  |                   | |     |                 |             |
    98. 

  98.  *-FreeBSD 2.2       | |     |                 |             |
    99. 

  99.  |        \          | |     |                 |             |
    100. 

  100.  |     FreeBSD 2.2.1 | |     |                 |             |
    101. 

  101.  |         |         | |     |                 |             |
    102. 

  102.  |     FreeBSD 2.2.2 | |     |             OpenBSD 2.1       |
    103. 

  103.  |         |         | |     |                 |             |
    104. 

  104.  |     FreeBSD 2.2.5 | |     |                 |             |
    105. 

  105.  |         |         | |     |             OpenBSD 2.2       |
    106. 

  106.  |         |         | |  NetBSD 1.3           |             |
    107. 

  107.  |     FreeBSD 2.2.6 | |     |    |            |             |
    108. 

  108.  |         |         | |     | NetBSD 1.3.1    |           BSD/OS 3.1
    109. 

  109.  |         |         | |     |    |        OpenBSD 2.3       |
    110. 

  110.  |         |         | |     | NetBSD 1.3.2    |             |
    111. 

  111.  |     FreeBSD 2.2.7 | |     |    |            |             |
    112. 

  112.  |         |         | |     |    |            |           BSD/OS 4.0
    113. 

  113.  |         v         | |     |    |            |             |
    114. 

  114.  |     FreeBSD 2.2.8 | |     |    |            |             |
    115. 

  115.  |                   | |     |    |        OpenBSD 2.4       |
    116. 

  116. FreeBSD 3.0 <--------* |     |    v            |             |
    117. 

  117.  |                     |     | NetBSD 1.3.3    |             |
    118. 

  118.  *---FreeBSD 3.1       |     |                 |             |
    119. 

  119.  |       |             |     |                 |           BSD/OS 4.0.1
    120. 

  120.  |   FreeBSD 3.2----*  |  NetBSD 1.4       OpenBSD 2.5       |
    121. 

  121.  |       |          |  |  |  |    |            |             |
    122. 

  122.  |       |          |  |  |  |    |            |             |
    123. 

  123.  |       |          |  |  |  |    |            |             |
    124. 

  124.  |   FreeBSD 3.3    |  |  |  | NetBSD 1.4.1    |             |
    125. 

  125.  |       |          |  |  |  |    |        OpenBSD 2.6       |
    126. 

  126.  |   FreeBSD 3.4    |  |  |  |    |            |             |
    127. 

  127.  |           |      |  |  |  |    |            |           BSD/OS 4.1
    128. 

  128. FreeBSD 4.0  |      |  |  |  | NetBSD 1.4.2    |             |
    129. 

  129.  |           |      |  |  |  |    |            |             |
    130. 

  130.  |           |      |  |  |  |    |            |             |
    131. 

  131.  |   FreeBSD 3.5    |  |  |  |    |        OpenBSD 2.7       |
    132. 

  132.  |           |      |  |  |  |    |            |             |
    133. 

  133.  |   FreeBSD 3.5.1  |  |  |  |    |            |             |
    134. 

  134.  |                  |  |  |  |    |            |             |
    135. 

  135.  *---FreeBSD 4.1    |  |  |  |    |            |             |
    136. 

  136.  |      |           |  | (?) |    |            |             |
    137. 

  137.  |   FreeBSD 4.1.1  |  |  /  |    |            |             |
    138. 

  138.  |      |           |  | /   |    |            |             |
    139. 

  139.  |   FreeBSD 4.2   Darwin/   | NetBSD 1.4.3    |             |
    140. 

  140.  |      |         Mac OS X   |             OpenBSD 2.8     BSD/OS 4.2
    141. 

  141.  |      |             |      |                 |             |
    142. 

  142.  |      |             |      |                 |             |
    143. 

  143.  |      |           10.0  NetBSD 1.5           |             |
    144. 

  144.  |   FreeBSD 4.3      |      |    |            |             |
    145. 

  145.  |      |             |      |    |        OpenBSD 2.9       |
    146. 

  146.  |      |             |      | NetBSD 1.5.1    |             |
    147. 

  147.  |      |             |      |    |            |             |
    148. 

  148.  |   FreeBSD 4.4-.    |      | NetBSD 1.5.2    |             |
    149. 

  149.  |      |        | Mac OS X  |    |            |             |
    150. 

  150.  |      |        |   10.1    |    |        OpenBSD 3.0       |
    151. 

  151.  |   FreeBSD 4.5 |    |      |    |            |             |
    152. 

  152.  |      |         \   |      |    |            |           BSD/OS 4.3
    153. 

  153.  |   FreeBSD 4.6   \  |      |    |        OpenBSD 3.1       |
    154. 

  154.  |      |           \ |      | NetBSD 1.5.3    |             |
    155. 

  155.  |   FreeBSD 4.6.2 Mac OS X  |                 |             |
    156. 

  156.  |      |            10.2    |                 |             |
    157. 

  157.  |   FreeBSD 4.7      |      |                 |             |
    158. 

  158.  |      |             |   NetBSD 1.6       OpenBSD 3.2       |
    159. 

  159.  |   FreeBSD 4.8      |      |    |            |             |
    160. 

  160.  |      |             |      | NetBSD 1.6.1    |             |
    161. 

  161.  |      |--------.    |      |    |        OpenBSD 3.3     BSD/OS 5.0
    162. 

  162.  |      |         \   |      |    |            |             |
    163. 

  163.  |   FreeBSD 4.9   |  |      |    |        OpenBSD 3.4     BSD/OS 5.1 ISE
    164. 

  164.  |      |          |  |      |    |            |
    165. 

  165.  |      |          |  |      | NetBSD 1.6.2    |
    166. 

  166.  |      |          |  |      |    |            |
    167. 

  167.  |      |          |  |      |    |        OpenBSD 3.5
    168. 

  168.  |      |          |  |      |    v            |
    169. 

  169.  |   FreeBSD 4.10  |  |      |                 |
    170. 

  170.  |      |          |  |      |                 |
    171. 

  171.  |   FreeBSD 4.11  |  |      |                 |
    172. 

  172.  |                 |  |      |                 |
    173. 

  173.  |                  `-|------|-----------------|---------------------.
    174. 

  174.  |                    |      |                 |                      \
    175. 

  175. FreeBSD 5.0           |      |                 |                       |
    176. 

  176.  |                    |      |                 |                       |
    177. 

  177. FreeBSD 5.1           |      |                 |                 DragonFly 1.0
    178. 

  178.  |          \         |      |                 |                       |
    179. 

  179.  |           ----- Mac OS X  |                 |                       |
    180. 

  180.  |                   10.3    |                 |                       |
    181. 

  181. FreeBSD 5.2           |      |                 |                       |
    182. 

  182.  |      |             |      |                 |                       |
    183. 

  183.  |   FreeBSD 5.2.1    |      |                 |                       |
    184. 

  184.  |                    |      |                 |                       |
    185. 

  185.  *-------FreeBSD 5.3  |      |                 |                       |
    186. 

  186.  |           |        |      |             OpenBSD 3.6                 |
    187. 

  187.  |           |        |   NetBSD 2.0           |                       |
    188. 

  188.  |           |        |      | |  |            |                DragonFly 1.2.0
    189. 

  189.  |           |     Mac OS X  | | NetBSD 2.0.2  |                       |
    190. 

  190.  |           |       10.4    | |  |            |                       |
    191. 

  191.  |       FreeBSD 5.4  |      | |  |            |                       |
    192. 

  192.  |           |        |      | |  |        OpenBSD 3.7                 |
    193. 

  193.  |           |        |      | | NetBSD 2.0.3  |                       |
    194. 

  194.  |           |        |      | |  |            |                       |
    195. 

  195.  *--FreeBSD  |        |      | |  v        OpenBSD 3.8                 |
    196. 

  196.  |    6.0    |        |      | |               |                       |
    197. 

  197.  |     |     |        |      |  \              |                       |
    198. 

  198.  |     |     |        |      | NetBSD 2.1      |                       |
    199. 

  199.  |     |     |        |      |                 |                       |
    200. 

  200.  |     |     |        |   NetBSD 3.0           |                       |
    201. 

  201.  |     |     |        |      | |  |            |                DragonFly 1.4.0
    202. 

  202.  |     |     |        |      | |  |        OpenBSD 3.9                 |
    203. 

  203.  |  FreeBSD  |        |      | |  |            |                       |
    204. 

  204.  |    6.1    |        |      | |  |            |                       |
    205. 

  205.  |     |  FreeBSD 5.5 |      | |  |            |                       |
    206. 

  206.  |     |              |      | | NetBSD 3.0.1  |                DragonFly 1.6.0
    207. 

  207.  |     |              |      | |  |            |                       |
    208. 

  208.  |     |              |      | |  |        OpenBSD 4.0                 |
    209. 

  209.  |     |              |      | | NetBSD 3.0.2  |                       |
    210. 

  210.  |     |              |      | NetBSD 3.1      |                       |
    211. 

  211.  | FreeBSD 6.2        |      |                 |                       |
    212. 

  212.  |     |              |      |                 |                DragonFly 1.8.0
    213. 

  213.  |     |              |      |             OpenBSD 4.1                 |
    214. 

  214.  |     |              |      |                 |                DragonFly 1.10.0
    215. 

  215.  |     |           Mac OS X  |                 |                       |
    216. 

  216.  |     |             10.5    |                 |                       |
    217. 

  217.  |     |              |      |             OpenBSD 4.2                 |
    218. 

  218.  |     |              |   NetBSD 4.0           |                       |
    219. 

  219.  | FreeBSD 6.3        |      |                 |                       |
    220. 

  220.  |            \       |      |                 |                       |
    221. 

  221.  *--FreeBSD    |      |      |                 |                DragonFly 1.12.0
    222. 

  222.  |    7.0      |      |      |                 |                       |
    223. 

  223.  |     |       |      |      |             OpenBSD 4.3                 |
    224. 

  224.  |     |       |      |      |                 |                DragonFly 2.0.0
    225. 

  225.  |     |    FreeBSD   |      |             OpenBSD 4.4                 |
    226. 

  226.  |     |      6.4     |      |                 |                       |
    227. 

  227.  |     |              |      |                 |                       |
    228. 

  228.  |  FreeBSD 7.1       |      |                 |                       |
    229. 

  229.  |     |              |      |                 |                DragonFly 2.2.0
    230. 

  230.  |  FreeBSD 7.2       |   NetBSD 5.0       OpenBSD 4.5                 |
    231. 

  231.  |             \      |      |    |            |                       |
    232. 

  232.  |              |  Mac OS X  |    |            |                       |
    233. 

  233.  |              |    10.6    |    |            |                       |
    234. 

  234.  |              |     |      |    |            |                DragonFly 2.4.0
    235. 

  235.  |              |     |      |    |        OpenBSD 4.6                 |
    236. 

  236.  |              |     |      |    |            |                       |
    237. 

  237.  *--FreeBSD     |     |      |    |            |                       |
    238. 

  238.  |    8.0       |     |      |    |            |                       |
    239. 

  239.  |     |     FreeBSD  |      |    |            |                       |
    240. 

  240.  |     |       7.3    |      |    |            |                DragonFly 2.6.0
    241. 

  241.  |     |        |     |      |    |        OpenBSD 4.7                 |
    242. 

  242.  |  FreeBSD     |     |      |    |            |                       |
    243. 

  243.  |    8.1       |     |      |    |            |                       |
    244. 

  244.  |     |        |     |      |    |            |                DragonFly 2.8.2
    245. 

  245.  |     |        |     |      |    |        OpenBSD 4.8                 |
    246. 

  246.  |     |        |     |      | NetBSD 5.1      |                       |
    247. 

  247.  |  FreeBSD  FreeBSD  |      |                 |                       |
    248. 

  248.  |    8.2      7.4    |      |                 |               DragonFly 2.10.1
    249. 

  249.  |     |              |      |             OpenBSD 4.9                 |
    250. 

  250.  |     `-----.     Mac OS X  |                 |                       |
    251. 

  251.  |            \      10.7    |                 |                       |
    252. 

  252.  |             |      |      |             OpenBSD 5.0                 |
    253. 

  253.  *--FreeBSD    |      |      |                 |                       |
    254. 

  254.  |    9.0      |      |      |                 |               DragonFly 3.0.1
    255. 

  255.  |     v    FreeBSD   |      |                 |                       |
    256. 

  256.  |            8.3     |      |             OpenBSD 5.1                 |
    257. 

  257.  |                 Mac OS X  |                 |                       |
    258. 

  258.  |                   10.8    |                 |                       |
    259. 

  259. FreeBSD 10 -current   |  NetBSD -current  OpenBSD -current             |
    260. 

  260.  |                    |      |                 |                       |
    261. 

  261.  v                    v      v                 v                       v
    262. 

  262. 

  263. Time
    264. 

  264. ----------------
    265. 

  265. 

  266. Time tolerance +/- 6 months, depending on which book/article you read; if it
    267. 

  267. was the announcement in Usenet or if it was available as tape.
    268. 

  268. 

  269. [44B] McKusick, Marshall Kirk, Keith Bostic, Michael J Karels,
    270. 

  270. 	and John Quarterman. The Design and Implementation of
    271. 

  271. 	the 4.4BSD Operating System.
    272. 

  272. [APL] Apple website [http://www.apple.com/macosx/]
    273. 

  273. [BSDI] Berkeley Software Design, Inc.
    274. 

  274. [DFB] DragonFlyBSD Project, The.
    275. 

  275. [DOC] README, COPYRIGHT on tape.
    276. 

  276. [FBD] FreeBSD Project, The.
    277. 

  277. [KB]  Keith Bostic. BSD2.10 available from Usenix. comp.unix.sources,
    278. 

  278. 	Volume 11, Info 4, April, 1987.
    279. 

  279. [KKK] Mike Karels, Kirk McKusick, and Keith Bostic. tahoe announcement.
    280. 

  280. 	comp.bugs.4bsd.ucb-fixes, June 15, 1988.
    281. 

  281. [KSJ] Michael J. Karels, Carl F. Smith, and William F. Jolitz.
    282. 

  282. 	Changes in the Kernel in 2.9BSD. Second Berkeley Software
    283. 

  283. 	Distribution UNIX Version 2.9, July, 1983.
    284. 

  284. [NBD] NetBSD Project, The.
    285. 

  285. [OBD] OpenBSD Project, The.
    286. 

  286. [QCU] Salus, Peter H. A quarter century of UNIX.
    287. 

  287. [SMS] Steven M. Schultz. 2.11BSD, UNIX for the PDP-11.
    288. 

  288. [TUHS] The Unix Historical Society.  http://minnie.tuhs.org/Unix_History/.
    289. 

  289. [USE] Usenet announcement.
    290. 

  290. [WRS] Wind River Systems, Inc.
    291. 

  291. [dmr] Dennis Ritchie, via E-Mail
    292. 

  292. 

  293. Multics                 1965
    294. 

  294. UNIX                    Summer 1969
    295. 

  295. 				DEC PDP-7
    296. 

  296. First   Edition         1971-11-03 [QCU]
    297. 

  297. 				DEC PDP-11/20, Assembler
    298. 

  298. Second  Edition         1972-06-12 [QCU]
    299. 

  299. 				10 UNIX installations
    300. 

  300. Third   Edition         1973-02-xx [QCU]
    301. 

  301. 				Pipes, 16 installations
    302. 

  302. Fourth  Edition         1973-11-xx [QCU]
    303. 

  303. 				rewriting in C effected,
    304. 

  304.                                 above 30 installations
    305. 

  305. Fifth   Edition         1974-06-xx [QCU]
    306. 

  306. 				above 50 installations
    307. 

  307. Sixth   Edition         1975-05-xx [QCU]
    308. 

  308. 				port to DEC Vax
    309. 

  309. Seventh Edition         1979-01-xx [QCU]
    310. 

  310. 				first portable UNIX
    311. 

  311. Eighth  Edition         1985-02-xx [QCU]
    312. 

  312. 				VAX 11/750, VAX 11/780 [dmr]
    313. 

  313. 				descended from 4.1c BSD [dmr]
    314. 

  314. 				descended from 4.1 BSD [44B]
    315. 

  315. 			scooping-out and replacement of the character-device
    316. 

  316. 			and networking part by the streams mechanism
    317. 

  317. 

  318. Ninth   Edition         1986-09-xx [QCU]
    319. 

  319. Tenth   Edition         1989-10-xx [QCU]
    320. 

  320. 

  321. 1BSD                    late 1977
    322. 

  322. 			1978-03-09 [QCU]
    323. 

  323. 				PDP-11, Pascal, ex(1)
    324. 

  324. 				30 free copies of 1BSD sent out
    325. 

  325. 				35 tapes sold for 50 USD [QCU]
    326. 

  326. 2BSD                    mid 1978 [QCU] 1979-05-10 [TUHS]
    327. 

  327. 				75 2BSD tapes shipped
    328. 

  328. 2.79BSD			1980-04-xx [TUHS]
    329. 

  329. 2.8BSD			1981-07-xx [KSJ]
    330. 

  330. 

  331. 2.8.1BSD		1982-01-xx [QCU]
    332. 

  332. 				set of performance improvements
    333. 

  333. 2.9BSD			1983-07-xx [KSJ]
    334. 

  334. 2.9.1BSD                1983-11-xx [TUHS]
    335. 

  335. 2.9BSD-Seismo		1985-08-xx [SMS]
    336. 

  336. 2.10BSD			1987-04-xx [KKK]
    337. 

  337. 2.10.1BSD		1989-01-xx [SMS]
    338. 

  338. 2.11BSD			1992-02-xx [SMS]
    339. 

  339. 2.11BSD rev #430	1999-12-13 [SMS]
    340. 

  340. 

  341. 32V			1978-1[01]-xx [QCU]
    342. 

  342. 3BSD                    late 1979 [QCU] March 1980 [TUHS]
    343. 

  343. 				virtual memory, page replacement,
    344. 

  344.                         	demand paging
    345. 

  345. 4.0BSD                  1980-10-xx
    346. 

  346. 4.1BSD                  1981-07-08 [DOC]
    347. 

  347. 4.1aBSD                 1982-04-xx
    348. 

  348. 				alpha release, 100 sites, networking [44B]
    349. 

  349. 4.1bBSD				internal release, fast filesystem [44B]
    350. 

  350. 4.1cBSD                 late 1982
    351. 

  351. 				beta release, IPC [44B]
    352. 

  352. 4.2BSD                  1983-09-xx [QCU]
    353. 

  353.                         1983-08-03 [DOC]
    354. 

  354. 4.3BSD                  1986-06-xx [QCU]
    355. 

  355. 			1986-04-05 [KB], [DOC]
    356. 

  356. 4.3BSD Tahoe            1988-06-15 [QCU], [DOC]
    357. 

  357. 4.3BSD NET/1            1988-11-xx [QCU]
    358. 

  358.                         1989-01-01 [DOC]
    359. 

  359. 4.3BSD Reno             1990-06-29 [QCU], [DOC]
    360. 

  360. 4.3BSD NET/2            1991-06-28 [QCU], [DOC]
    361. 

  361. 

  362. BSD/386 ALPHA		1991-12-xx [BSDI]
    363. 

  363. 				first code released to people outside BSDI
    364. 

  364. 386BSD 0.0              1992-02-xx [DOC]
    365. 

  365. BSD/386 0.3.1	        1992-04-xx [BSDI] first ext. beta; B customers
    366. 

  366. BSD/386 0.3.3		1992-06-xx [BSDI] first CDROM version
    367. 

  367. 386BSD 0.1              1992-07-28 [DOC]
    368. 

  368. 4.4BSD Alpha            1992-07-07
    369. 

  369. BSD/386 0.9.3		1992-10-xx [BSDI]
    370. 

  370. 				first external gamma; G customers
    371. 

  371. BSD/386 0.9.4		1992-12-xx [BSDI]
    372. 

  372. 				would have been 1.0 except for request
    373. 

  373. 				for preliminary injunction
    374. 

  374. BSD/386 1.0 		1993-03-xx [BSDI]
    375. 

  375. 				injunction denied; first official release
    376. 

  376. NetBSD 0.8              1993-04-20 [NBD]
    377. 

  377. 4.4BSD                  1993-06-01 [USE]
    378. 

  378. NetBSD 0.9              1993-08-23 [NBD]
    379. 

  379. FreeBSD 1.0		1993-11-01 [FBD]
    380. 

  380. FreeBSD 1.0.2		1993-11-14 [FBD]
    381. 

  381. 				supersedes 1.0 13 days after release.
    382. 

  382. BSD/386 1.1		1994-02-xx [BSDI]
    383. 

  383. 4.4BSD Lite             1994-03-01 [USE]
    384. 

  384. FreeBSD 1.1		1994-05-07 [FBD]
    385. 

  385. FreeBSD 1.1.5		1994-06-30 [FBD]
    386. 

  386. FreeBSD 1.1.5.1		1994-07-05 [FBD]
    387. 

  387. 				supersedes 1.1.5 5 days after release.
    388. 

  388. NetBSD 1.0              1994-10-26 [NBD]
    389. 

  389. 386BSD 1.0              1994-11-12 [USE]
    390. 

  390. FreeBSD 2.0		1994-11-23 [FBD]
    391. 

  391. BSD/OS 2.0		1995-01-xx [BSDI] 4.4 lite based
    392. 

  392. FreeBSD 2.0.5		1995-06-10 [FBD]
    393. 

  393. BSD/OS 2.0.1		1995-06-xx [BSDI]
    394. 

  394. 4.4BSD Lite Release 2	1995-06-xx [44B]
    395. 

  395. 				the true final distribution from the CSRG
    396. 

  396. FreeBSD 2.1.0		1995-11-19 [FBD]
    397. 

  397. NetBSD 1.1              1995-11-26 [NBD]
    398. 

  398. BSD/OS 2.1		1996-01-xx [BSDI]
    399. 

  399. FreeBSD 2.1.5		1996-07-14 [FBD]
    400. 

  400. NetBSD 1.2              1996-10-04 [NBD]
    401. 

  401. OpenBSD 2.0             1996-10-18 [OBD]
    402. 

  402. FreeBSD 2.1.6		1996-11-16 [FBD]
    403. 

  403. FreeBSD 2.1.6.1		1996-11-25 [FBD] (sendmail security release)
    404. 

  404. Rhapsody		1997-xx-xx
    405. 

  405. FreeBSD 2.1.7		1997-02-20 [FBD]
    406. 

  406. BSD/OS 3.0		1997-02-xx [BSDI] 4.4 lite2 based
    407. 

  407. FreeBSD 2.2.0		1997-03-16 [FBD]
    408. 

  408. FreeBSD 2.2.1		1997-03-25 [FBD]
    409. 

  409. FreeBSD 2.2.2		1997-05-16 [FBD]
    410. 

  410. NetBSD 1.2.1            1997-05-20 [NBD] (patch release)
    411. 

  411. OpenBSD 2.1             1997-06-01 [OBD]
    412. 

  412. FreeBSD 2.2.5		1997-10-22 [FBD]
    413. 

  413. OpenBSD 2.2             1997-12-01 [OBD]
    414. 

  414. NetBSD 1.3              1998-01-04 [NBD]
    415. 

  415. FreeBSD 2.2.6		1998-03-25 [FBD]
    416. 

  416. NetBSD 1.3.1            1998-03-09 [NBD] (patch release)
    417. 

  417. BSD/OS 3.1		1998-03-xx [BSDI]
    418. 

  418. OpenBSD 2.3             1998-05-19 [OBD]
    419. 

  419. NetBSD 1.3.2            1998-05-29 [NBD] (patch release)
    420. 

  420. FreeBSD 2.2.7		1998-07-22 [FBD]
    421. 

  421. BSD/OS 4.0		1998-08-xx [BSDI]
    422. 

  422. 				2-lock MP support, ELF executables
    423. 

  423. FreeBSD 3.0		1998-10-16 [FBD]
    424. 

  424. 				FreeBSD-3.0 is a snapshot from -current,
    425. 

  425. 				while 3.1 and 3.2 are from 3.x-stable which
    426. 

  426. 				was branched quite some time after 3.0-release
    427. 

  427. FreeBSD 2.2.8           1998-11-29 [FBD]
    428. 

  428. OpenBSD 2.4             1998-12-01 [OBD]
    429. 

  429. NetBSD 1.3.3            1998-12-23 [NBD] (patch release)
    430. 

  430. FreeBSD 3.1		1999-02-15 [FBD]
    431. 

  431. BSD/OS 4.0.1		1999-03-xx [BSDI]
    432. 

  432. NetBSD 1.4              1999-05-12 [NBD]
    433. 

  433. FreeBSD 3.2             1999-05-17 [FBD]
    434. 

  434. OpenBSD 2.5             1999-05-19 [OBD]
    435. 

  435. NetBSD 1.4.1            1999-08-26 [NBD] (patch release)
    436. 

  436. FreeBSD 3.3             1999-09-17 [FBD]
    437. 

  437. OpenBSD 2.6             1999-12-01 [OBD]
    438. 

  438. FreeBSD 3.4             1999-12-20 [FBD]
    439. 

  439. BSD/OS 4.1		1999-12-xx [BSDI]
    440. 

  440. FreeBSD 4.0             2000-03-13 [FBD]
    441. 

  441. NetBSD 1.4.2            2000-03-19 [NBD] (patch release)
    442. 

  442. OpenBSD 2.7             2000-06-15 [OBD]
    443. 

  443. FreeBSD 3.5		2000-06-24 [FBD]
    444. 

  444. FreeBSD 4.1		2000-07-27 [FBD]
    445. 

  445. FreeBSD 3.5.1		2000-07-28 [FBD]
    446. 

  446. FreeBSD 4.1.1		2000-09-25 [FBD] (a network-only patch release)
    447. 

  447. FreeBSD 4.2  		2000-11-21 [FBD]
    448. 

  448. NetBSD 1.4.3		2000-11-25 [NBD] (patch release)
    449. 

  449. BSD/OS 4.2		2000-11-29 [BSDI]
    450. 

  450. OpenBSD 2.8		2000-12-01 [OBD]
    451. 

  451. NetBSD 1.5              2000-12-06 [NBD]
    452. 

  452. Mac OS X 10.0           2001-03-24 [APL]
    453. 

  453. FreeBSD 4.3  		2001-04-20 [FBD]
    454. 

  454. OpenBSD 2.9  		2001-06-01 [OBD]
    455. 

  455. NetBSD 1.5.1		2001-07-11 [NBD] (patch release)
    456. 

  456. NetBSD 1.5.2		2001-09-13 [NBD] (patch release)
    457. 

  457. FreeBSD 4.4  		2001-09-18 [FBD]
    458. 

  458. Mac OS X 10.1		2001-09-29 [APL]
    459. 

  459. OpenBSD 3.0		2001-12-01 [OBD]
    460. 

  460. FreeBSD 4.5  		2002-01-29 [FBD]
    461. 

  461. BSD/OS 4.3		2002-03-14 [WRS]
    462. 

  462. OpenBSD 3.1		2002-05-19 [OBD]
    463. 

  463. FreeBSD 4.6  		2002-06-15 [FBD]
    464. 

  464. NetBSD 1.5.3		2002-07-22 [NBD] (patch release)
    465. 

  465. FreeBSD 4.6.2		2002-08-15 [FBD] (patch release)
    466. 

  466. Mac OS X 10.2		2002-08-23 [APL]
    467. 

  467. NetBSD 1.6		2002-09-14 [NBD]
    468. 

  468. FreeBSD 4.7		2002-10-08 [FBD]
    469. 

  469. OpenBSD 3.2		2002-11-01 [OBD]
    470. 

  470. FreeBSD 5.0		2003-01-17 [FBD]
    471. 

  471. 				FreeBSD 5.0 is a separate branch off of
    472. 

  472. 				-current, similar to 3.0.
    473. 

  473. FreeBSD 4.8		2003-04-03 [FBD]
    474. 

  474. NetBSD 1.6.1		2003-04-21 [NBD] (patch release)
    475. 

  475. OpenBSD 3.3		2003-05-01 [OBD]
    476. 

  476. BSD/OS 5.0		2003-05-?? [WRS]
    477. 

  477. FreeBSD 5.1		2003-06-09 [FBD]
    478. 

  478. Mac OS X 10.3		2003-10-24 [APL]
    479. 

  479. FreeBSD 4.9		2003-10-28 [FBD]
    480. 

  480. BSD/OS 5.1 ISE		2003-10-?? [WRS] (final version)
    481. 

  481. OpenBSD 3.4		2003-11-01 [OBD]
    482. 

  482. FreeBSD 5.2		2004-01-12 [FBD]
    483. 

  483. FreeBSD 5.2.1		2004-02-22 [FBD] (patch release)
    484. 

  484. NetBSD 1.6.2		2004-03-01 [NBD] (patch release)
    485. 

  485. OpenBSD 3.5		2004-04-01 [OBD]
    486. 

  486. FreeBSD 4.10		2004-05-27 [FBD]
    487. 

  487. DragonFly 1.0		2004-07-12 [DFB]
    488. 

  488. OpenBSD 3.6		2004-10-29 [OBD]
    489. 

  489. FreeBSD 5.3		2004-11-06 [FBD]
    490. 

  490. NetBSD 2.0		2004-12-09 [NBD]
    491. 

  491. FreeBSD 4.11		2005-01-25 [FBD]
    492. 

  492. DragonFly 1.2.0		2005-04-08 [DFB]
    493. 

  493. NetBSD 2.0.2		2005-04-14 [NBD] (security/critical release)
    494. 

  494. Mac OS X 10.4		2005-04-29 [APL]
    495. 

  495. FreeBSD 5.4		2005-05-09 [FBD]
    496. 

  496. OpenBSD 3.7		2005-05-19 [OBD]
    497. 

  497. NetBSD 2.0.3		2005-10-31 [NBD] (security/critical release)
    498. 

  498. OpenBSD 3.8		2005-11-01 [OBD]
    499. 

  499. FreeBSD 6.0		2005-11-01 [FBD]
    500. 

  500. NetBSD 2.1		2005-11-02 [NBD]
    501. 

  501. NetBSD 3.0		2005-12-23 [NBD]
    502. 

  502. DragonFly 1.4.0		2006-01-08 [DFB]
    503. 

  503. OpenBSD 3.9		2006-05-01 [OBD]
    504. 

  504. FreeBSD 6.1		2006-05-08 [FBD]
    505. 

  505. FreeBSD 5.5		2006-05-25 [FBD]
    506. 

  506. NetBSD 3.0.1		2006-07-24 [NBD] (security/critical release)
    507. 

  507. DragonFly 1.6.0		2006-07-24 [DFB]
    508. 

  508. OpenBSD 4.0		2006-11-01 [OBD]
    509. 

  509. NetBSD 3.0.2		2006-11-04 [NBD] (security/critical release)
    510. 

  510. NetBSD 3.1		2006-11-04 [NBD]
    511. 

  511. FreeBSD 6.2		2007-01-15 [FBD]
    512. 

  512. DragonFly 1.8.0		2007-01-30 [DFB]
    513. 

  513. OpenBSD 4.1		2007-05-01 [OBD]
    514. 

  514. DragonFly 1.10.0	2007-08-06 [DFB]
    515. 

  515. Mac OS X 10.5		2007-10-26 [APL]
    516. 

  516. OpenBSD 4.2		2007-11-01 [OBD]
    517. 

  517. NetBSD 4.0		2007-12-19 [NBD]
    518. 

  518. FreeBSD 6.3		2008-01-18 [FBD]
    519. 

  519. DragonFly 1.12.0	2008-02-26 [DFB]
    520. 

  520. FreeBSD 7.0		2008-02-27 [FBD]
    521. 

  521. OpenBSD 4.3		2008-05-01 [OBD]
    522. 

  522. DragonFly 2.0.0		2008-07-21 [DFB]
    523. 

  523. OpenBSD 4.4		2008-11-01 [OBD]
    524. 

  524. FreeBSD 6.4		2008-11-28 [FBD]
    525. 

  525. FreeBSD 7.1		2009-01-04 [FBD]
    526. 

  526. DragonFly 2.2.0		2009-02-17 [DFB]
    527. 

  527. NetBSD 5.0		2009-04-29 [NBD]
    528. 

  528. OpenBSD 4.5		2009-05-01 [OBD]
    529. 

  529. FreeBSD 7.2		2009-05-04 [FBD]
    530. 

  530. Mac OS X 10.6		2009-06-08 [APL]
    531. 

  531. DragonFly 2.4.0		2009-09-16 [DFB]
    532. 

  532. OpenBSD 4.6		2009-10-18 [OBD]
    533. 

  533. FreeBSD 8.0		2009-11-26 [FBD]
    534. 

  534. FreeBSD 7.3		2010-03-23 [FBD]
    535. 

  535. DragonFly 2.6.0		2010-03-28 [DFB]
    536. 

  536. OpenBSD 4.7		2010-05-19 [OBD]
    537. 

  537. FreeBSD 8.1		2010-07-24 [FBD]
    538. 

  538. DragonFly 2.8.2		2010-10-30 [DFB]
    539. 

  539. OpenBSD 4.8		2010-11-01 [OBD]
    540. 

  540. NetBSD 5.1		2010-11-19 [NBD]
    541. 

  541. FreeBSD 7.4		2011-02-24 [FBD]
    542. 

  542. FreeBSD 8.2		2011-02-24 [FBD]
    543. 

  543. DragonFly 2.10.1	2011-04-26 [DFB]
    544. 

  544. OpenBSD 4.9		2011-05-01 [OBD]
    545. 

  545. Mac OS X 10.7		2011-07-20 [APL]
    546. 

  546. OpenBSD 5.0		2011-11-01 [OBD]
    547. 

  547. FreeBSD 9.0		2012-01-12 [FBD]
    548. 

  548. DragonFly 3.0.1		2012-02-21 [DFB]
    549. 

  549. FreeBSD 8.3		2012-04-18 [FBD]
    550. 

  550. OpenBSD 5.1		2012-05-01 [OBD]
    551. 

  551. Mac OS X 10.8		2012-07-25 [APL]
    552. 

  552. 

  553. Bibliography
    554. 

  554. ------------------------
    555. 

  555. 

  556. Leffler, Samuel J., Marshall Kirk McKusick, Michael J Karels and John
    557. 

  557. Quarterman. The Design and Implementation of the 4.3BSD UNIX Operating
    558. 

  558. System. Reading, Mass. Addison-Wesley, 1989. ISBN 0-201-06196-1
    559. 

  559. 

  560. Salus, Peter H. A quarter century of UNIX. Addison-Wesley Publishing
    561. 

  561. Company, Inc., 1994. ISBN 0-201-54777-5
    562. 

  562. 

  563. McKusick, Marshall Kirk, Keith Bostic, Michael J Karels, and John
    564. 

  564. Quarterman. The Design and Implementation of the 4.4BSD Operating
    565. 

  565. System. Reading, Mass. Addison-Wesley, 1996. ISBN 0-201-54979-4
    566. 

  566. 

  567. McKusick, Marshall Kirk, George Neville-Neil. The Design and
    568. 

  568. Implementation of the FreeBSD Operating System.
    569. 

  569. Addison-Wesley Professional, Published: Aug 2, 2004. ISBN 0-201-70245-2
    570. 

  570. 

  571. Doug McIlroy. Research Unix Reader.
    572. 

  572. 

  573. Michael G. Brown. The Role of BSD in the Development of Unix.
    574. 

  574. Presented to the Tasmanian Unix Special Interest Group of the
    575. 

  575. Australian Computer Society, Hobart, August 1993.
    576. 

  576. 

  577. Peter H. Salus. Unix at 25. Byte Magazine, October 1994.
    578. 

  578. URL: http://www.byte.com/art/9410/sec8/art3.htm
    579. 

  579. 

  580. Andreas Klemm, Lars Kรถller. If you're going to San Francisco ...
    581. 

  581. Die freien BSD-Varianten von Unix. c't April 1997, page 368ff.
    582. 

    583. 

  583. BSD Release Announcements collection.
    584. 

  584. URL: http://www.FreeBSD.org/releases/
    585. 

  585. 

  586. BSD Hypertext Man Pages
    587. 

  587. URL: http://www.FreeBSD.org/cgi/man.cgi
    588. 

  588. 

  589. UNIX history graphing project
    590. 

  590. URL: http://minnie.tuhs.org/Unix_History/index.html
    591. 

  591. 

  592. UNIX history
    593. 

  593. URL: http://www.levenez.com/unix/
    594. 

  594. 

  595. James Howard: The BSD Family Tree
    596. 

  596. URL: http://ezine.daemonnews.org/200104/bsd_family.html
    597. 

  597. ("what are the differences between FreeBSD, NetBSD, and OpenBSD?")
    598. 

  598. 

  599. 

  600. Acknowledgments
    601. 

  601. ---------------
    602. 

  602. 

  603. Josh Gilliam for suggestions, bug fixes, and finding very old
    604. 

  604. original BSD announcements from Usenet or tapes.
    605. 

  605. 

  606. Steven M. Schultz for providing 2.8BSD, 2.10BSD, 2.11BSD manual pages.
    607. 

  607. 

  608. --
    609. 

  609. Copyright (c) 1997-2012 Wolfram Schneider <wosch@FreeBSD.ORG>
    610. 

  610. URL: http://cvsweb.freebsd.org/src/share/misc/bsd-family-tree
    611. 

  611. 

  612. $FreeBSD$
    613.