xref: /freebsd/share/misc/bsd-family-tree (revision 32100375a661c1e16588ddfa7b90ca8d26cb9786)
1The UNIX system family tree: Research and BSD
2---------------------------------------------
3
4First Edition (V1)
5     |
6Second Edition (V2)
7     |
8Third Edition (V3)
9     |
10Fourth Edition (V4)
11     |
12Fifth Edition (V5)
13     |
14Sixth Edition (V6) -----*
15       \                |
16        \               |
17         \              |
18Seventh 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     /            |                      |
38Eighth Edition    |                   2.9BSD-Seismo
39     |            |                      |
40     +----<--- 4.2BSD               2.9.1BSD
41     |            |                      |
42     +----<--- 4.3BSD -------------> 2.10BSD
43     |            |               /      |
44Ninth Edition     |              / 2.10.1BSD
45     |         4.3BSD Tahoe-----+        |
46     |            |              \       |
47     |            |                \     |
48     v            |                  2.11BSD
49Tenth Edition     |                      |
50                  |                  2.11BSD rev #430
51               4.3BSD NET/1              |
52                  |                      v
53               4.3BSD Reno
54                  |
55   *---------- 4.3BSD NET/2 -------------------+-------------*
56   |                    |                      |             |
57386BSD 0.0              |                      |           BSD/386 ALPHA
58   |                    |                      |             |
59386BSD 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   |               /    |                      |             |
67FreeBSD 1.0 <-----'     *--NetBSD 0.9          |           BSD/386 1.1
68   |                    |           .----- 4.4BSD Lite       |
69FreeBSD 1.1             |          /     /     |     \       |
70   |                    |         /     |      |      \      |
71FreeBSD 1.1.5       .---|--------'      |      |       \     |
72   |               /    |               |      |        \    |
73FreeBSD 1.1.5.1   /     |               |      |         \   |
74   |             /      *--NetBSD 1.0 <-'      |          \  |
75   |            /       |                      |           \ |
76FreeBSD 2.0 <--'        |                      |           BSD/OS 2.0
77   |                     \                     |             |
78FreeBSD 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     |
85FreeBSD 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 |                   | |     |    |            |             |
118FreeBSD 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
130FreeBSD 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 |                    |      |                 |                      \
177FreeBSD 5.0           |      |                 |                       |
178 |                    |      |                 |                       |
179FreeBSD 5.1           |      |                 |               DragonFly 1.0
180 |          \         |      |                 |                       |
181 |           ----- Mac OS X  |                 |                       |
182 |                   10.3    |                 |                       |
183FreeBSD 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     OpenBSD 4.5                 |
233 |             \      |      |   5.0           |                       |
234 |             \      |      |  / | \          |                       |
235 |              |  Mac OS X  |  | |  \         |                       |
236 |              |    10.6    |  | |   \        |                       |
237 |              |     |      |  | | NetBSD     |               DragonFly 2.4.0
238 |              |     |      |  | |  5.0.1 OpenBSD 4.6                 |
239 |              |     |      |  | |    |       |                       |
240 *--FreeBSD     |     |      |  | |    |       |                       |
241 |    8.0       |     |      |  | |    |       |                       |
242 |     |     FreeBSD  |      |  | | NetBSD     |                       |
243 |     |       7.3    |      |  | |  5.0.2     |               DragonFly 2.6.0
244 |     |        |     |      |  | |        OpenBSD 4.7                 |
245 |  FreeBSD     |     |      |  | |            |                       |
246 |    8.1       |     |      |  | |            |                       |
247 |     |        |     |      |  | |            |               DragonFly 2.8.2
248 |     |        |     |      |  | |        OpenBSD 4.8                 |
249 |     |        |     |      |  | *--NetBSD    |                       |
250 |  FreeBSD  FreeBSD  |      |  |    5.1       |                       |
251 |    8.2      7.4    |      |  |     |        |               DragonFly 2.10.1
252 |     |              |      |  |     |    OpenBSD 4.9                 |
253 |     `-----.     Mac OS X  |  |     |        |                       |
254 |            \      10.7    |  |     |        |                       |
255 |             |      |      |  |     |    OpenBSD 5.0                 |
256 *--FreeBSD    |      |      |  |     |        |                       |
257 |    9.0      |      |      |  |  NetBSD      |               DragonFly 3.0.1
258 |     |    FreeBSD   |      |  |   5.1.2      |                       |
259 |     |      8.3     |      |  |     |        |                       |
260 |     |       |      |      |  |  NetBSD      |                       |
261 |     |       |      |      |  |   5.1.3      |                       |
262 |     |       |      |      |  |     |        |                       |
263 |     |       |      |      |  |  NetBSD      |                       |
264 |     |       |      |      |  |   5.1.4      |                       |
265 |     |       |      |      |  |          OpenBSD 5.1                 |
266 |     |       |   Mac OS X  |  `--------.     |                       |
267 |     |       |     10.8    |           |     |                       |
268 |     |       |      |      *--NetBSD   |     |                       |
269 |     |       |      |      |    6.0    |     |                       |
270 |     |       |      |      |    | |    | OpenBSD 5.2         DragonFly 3.2.1
271 |  FreeBSD    |      |      |    | | NetBSD   |                       |
272 |    9.1      |      |      |    | |   5.2    |                       |
273 |     |       |      |      |    | |    |     |                       |
274 |     |       |      |      |    | | NetBSD   |                       |
275 |     |       |      |      |    | |  5.2.1   |                       |
276 |     |       |      |      |    | |    |     |                       |
277 |     |       |      |      |    | | NetBSD   |                       |
278 |     |       |      |      |    | |  5.2.2   |                       |
279 |     |       |      |      |    | |          |                       |
280 |     |       |      |      |    |  \         |                       |
281 |     |       |      |      |    |   NetBSD   |                       |
282 |     |       |      |      |    |    6.0.1   |                       |
283 |     |       |      |      |    |      | OpenBSD 5.3         DragonFly 3.4.1
284 |     |       |      |      |    |   NetBSD   |                       |
285 |     |       |      |      |    |    6.0.2   |                       |
286 |     |       |      |      |    |      |     |                       |
287 |     |       |      |      |    |   NetBSD   |                       |
288 |     |       |      |      |    |    6.0.3   |                       |
289 |     |       |      |      |    |      |     |                       |
290 |     |       |      |      |    |   NetBSD   |                       |
291 |     |       |      |      |    |    6.0.4   |                       |
292 |     |       |      |      |    |      |     |                       |
293 |     |       |      |      |    |   NetBSD   |                       |
294 |     |       |      |      |    |    6.0.5   |                       |
295 |     |       |      |      |    |      |     |                       |
296 |     |       |      |      |    |   NetBSD   |                       |
297 |     |       |      |      |    |    6.0.6   |                       |
298 |     |       |      |      |    |            |                       |
299 |     |       |      |      |    *--NetBSD    |                       |
300 |     |       |      |      |         6.1     |                       |
301 |     |    FreeBSD   |      |          |      |                       |
302 |     |      8.4     |      |       NetBSD    |                       |
303 |     |       |      |      |        6.1.1    |                       |
304 |     |              |      |          |      |                       |
305 |  FreeBSD           |      |       NetBSD    |                       |
306 |    9.2             |      |        6.1.2    |                       |
307 |     |           Mac OS X  |          |      |                       |
308 |     |             10.9    |          |  OpenBSD 5.4                 |
309 |     `-----.        |      |          |      |               DragonFly 3.6.0
310 |            \       |      |          |      |                       |
311 *--FreeBSD    |      |      |       NetBSD    |                       |
312 |   10.0      |      |      |        6.1.3    |                       |
313 |     |       |      |      |          |      |                       |
314 |     |       |      |      |          |      |               DragonFly 3.6.1
315 |     |       |      |      |          |      |                       |
316 |     |       |      |      |          |      |                       |
317 |     |       |      |      |          |      |               DragonFly 3.6.2
318 |     |       |      |      |       NetBSD    |                       |
319 |     |       |      |      |        6.1.4    |                       |
320 |     |       |      |      |          |      |                       |
321 |     |       |      |      |          |  OpenBSD 5.5                 |
322 |     |       |      |      |          |      |                       |
323 |     |       |      |      |          |      |               DragonFly 3.8.0
324 |     |       |      |      |          |      |                       |
325 |     |       |      |      |          |      |                       |
326 |     |       |      |      |          |      |               DragonFly 3.8.1
327 |     |       |      |      |          |      |                       |
328 |     |       |      |      |          |      |                       |
329 |     |       |      |      |          |      |               DragonFly 3.6.3
330 |     |       |      |      |          |      |                       |
331 |     |    FreeBSD   |      |          |      |                       |
332 |     |      9.3     |      |          |      |                       |
333 |     |              |      |       NetBSD    |               DragonFly 3.8.2
334 |     |              |      |        6.1.5    |                       |
335 |     |           Mac OS X  |                 |                       |
336 |     |             10.10   |                 |                       |
337 |     |              |      |             OpenBSD 5.6                 |
338 |  FreeBSD           |      |                 |                       |
339 |   10.1             |      |                 |               DragonFly 4.0.1
340 |     |              |      |                 |                       |
341 |     |              |      |                 |               DragonFly 4.0.2
342 |     |              |      |                 |                       |
343 |     |              |      |                 |               DragonFly 4.0.3
344 |     |              |      |                 |                       |
345 |     |              |      |                 |               DragonFly 4.0.4
346 |     |              |      |                 |                       |
347 |     |              |      |                 |               DragonFly 4.0.5
348 |     |              |      |                 |                       |
349 |     |              |      |             OpenBSD 5.7                 |
350 |     |              |      |                 |               DragonFly 4.2.0
351 |  FreeBSD           |      |                 |                       |
352 |   10.2             |      |                 |                       |
353 |     |            macOS    *--NetBSD 7.0     |                       |
354 |     |            10.11    |   | |       OpenBSD 5.8                 |
355 |     |              |      |   | `--.        |               DragonFly 4.4.1
356 |  FreeBSD           |      |   |    |    OpenBSD 5.9                 |
357 |   10.3             |      |   |    |        |                       |
358 |     |              |      |   | NetBSD      |                       |
359 |     |              |      |   |  7.0.1      |                       |
360 |     `------.       |      |   |    |        |               DragonFly 4.6.0
361 |            |       |      |   |    |        |                       |
362 |            |       |      |   |    |        |                       |
363 *--FreeBSD   |     macOS    |   |    |    OpenBSD 6.0                 |
364 |   11.0     |     10.12    |   | NetBSD      |                       |
365 |     |      |       |      |   |  7.0.2      |                       |
366 |     |      |       |      |   |             |                       |
367 |     |      |       |      |   *--NetBSD     |                       |
368 |     |      |       |      |   |   7.1       |                       |
369 |     |      |       |      |   |    |        |                       |
370 |     |      |       |      |   |    |        |                       |
371 |     |      |     macOS    |   |    |        |               DragonFly 4.8.0
372 |     |      |     10.13    |   |    |    OpenBSD 6.1                 |
373 |  FreeBSD   |       |      |   |    |        |               DragonFly 5.0.0
374 |   11.1  FreeBSD    |      |   |    |        |                       |
375 |     |    10.4      |      |   |    |    OpenBSD 6.2         DragonFly 5.0.1
376 |     |              |      |   |    |        |                       |
377 |     `------.       |      |   | NetBSD      |               DragonFly 5.0.2
378 |            |       |      |   |  7.1.1      |                       |
379 |            |       |      |   |    |        |                       |
380 |            |       |      |   | NetBSD      |                       |
381 |            |       |      |   |  7.1.2      `--.                    |
382 |            |       |      |   |                |                    |
383 |            |       |      |   `-----.      OpenBSD 6.3              |
384 |            |       |      *--NetBSD |          |            DragonFly 5.2.0
385 |            |       |      |   8.0   |          |                    |
386 |            |       |      |   |     |          |            DragonFly 5.2.1
387 |            |       |      |   |     |          |                    |
388 |            |       |      |   |     |          |            DragonFly 5.2.2
389 |         FreeBSD    |      |   |     *--NetBSD  |                    |
390 |           11.2     |      |   |         7.2    |                    |
391 |            |     macOS    |   |                |                    |
392 |            |     10.14    |   |            OpenBSD 6.4              |
393 |            |       |      |   |                |                    |
394 |            |       |      |   |                |            DragonFly 5.4.0
395 *--FreeBSD   |       |      |   |                |                    |
396 |   12.0     |       |      |   |                |            DragonFly 5.4.1
397 |     |      |       |      |   |            OpenBSD 6.5              |
398 |     |      |       |      |   |                |                    |
399 |     |      |       |      |  NetBSD            |                    |
400 |     |      |       |      |   8.1              |            DragonFly 5.6
401 |     |      |       |      |   |                |                    |
402 |     |      |       |      |   |                |            DragonFly 5.6.1
403 |     |   FreeBSD  macOS    |   |                |                    |
404 |     |     11.3   10.15    |   |                |                    |
405 |  FreeBSD           |      |   |            OpenBSD 6.6              |
406 |   12.1           macOS    |   `-------.        |                    |
407 |     |           10.15.1   |           |        |            DragonFly 5.6.2
408 |     |              |      *--NetBSD   |        |                    |
409 |     v              |      |   9.0     |        |                    |
410 |                    |      |           |        |                    |
411 |                    |      |           |        |            DragonFly 5.8
412 |                    |      |           |        |                    |
413 |                    |      |           |        |            DragonFly 5.6.3
414 |                    |      |        NetBSD      |                    |
415 |                    |      |         8.2        |                    |
416 |                    |      |                    |                    |
417FreeBSD 13 -current   |  NetBSD -current   OpenBSD -current    DragonFly -current
418 |                    |      |                    |                    |
419 v                    v      v                    v                    v
420
421Time
422----------------
423
424Time tolerance +/- 6 months, depending on which book/article you read; if it
425was the announcement in Usenet or if it was available as tape.
426
427[44B] McKusick, Marshall Kirk, Keith Bostic, Michael J Karels,
428	and John Quarterman. The Design and Implementation of
429	the 4.4BSD Operating System.
430[APL] Apple website [https://www.apple.com/macosx/]
431[BSDI] Berkeley Software Design, Inc.
432[DFB] DragonFlyBSD Project, The.
433[DOC] README, COPYRIGHT on tape.
434[FBD] FreeBSD Project, The.
435[KB]  Keith Bostic. BSD2.10 available from Usenix. comp.unix.sources,
436	Volume 11, Info 4, April, 1987.
437[KKK] Mike Karels, Kirk McKusick, and Keith Bostic. tahoe announcement.
438	comp.bugs.4bsd.ucb-fixes, June 15, 1988.
439[KSJ] Michael J. Karels, Carl F. Smith, and William F. Jolitz.
440	Changes in the Kernel in 2.9BSD. Second Berkeley Software
441	Distribution UNIX Version 2.9, July, 1983.
442[NBD] NetBSD Project, The.
443[OBD] OpenBSD Project, The.
444[QCU] Salus, Peter H. A quarter century of UNIX.
445[SMS] Steven M. Schultz. 2.11BSD, UNIX for the PDP-11.
446[TUHS] The Unix Historical Society.  http://minnie.tuhs.org/Unix_History/.
447[USE] Usenet announcement.
448[WRS] Wind River Systems, Inc.
449[dmr] Dennis Ritchie, via E-Mail
450
451Multics                 1965
452UNIX                    Summer 1969
453				DEC PDP-7
454First   Edition         1971-11-03 [QCU]
455				DEC PDP-11/20, Assembler
456Second  Edition         1972-06-12 [QCU]
457				10 UNIX installations
458Third   Edition         1973-02-xx [QCU]
459				Pipes, 16 installations
460Fourth  Edition         1973-11-xx [QCU]
461				rewriting in C effected,
462                                above 30 installations
463Fifth   Edition         1974-06-xx [QCU]
464				above 50 installations
465Sixth   Edition         1975-05-xx [QCU]
466				port to DEC Vax
467Seventh Edition         1979-01-xx [QCU] 1979-01-10 [TUHS]
468				first portable UNIX
469Eighth  Edition         1985-02-xx [QCU]
470				VAX 11/750, VAX 11/780 [dmr]
471				descended from 4.1c BSD [dmr]
472				descended from 4.1 BSD [44B]
473			scooping-out and replacement of the character-device
474			and networking part by the streams mechanism
475
476Ninth   Edition         1986-09-xx [QCU]
477Tenth   Edition         1989-10-xx [QCU]
478
4791BSD                    late 1977
480			1978-01-16 [DOC]
481			1978-03-09 [QCU]
482				PDP-11, Pascal, ex(1)
483				30 free copies of 1BSD sent out
484				35 tapes sold for 50 USD [QCU]
4852BSD                    mid 1978 [QCU] 1979-05-10 [TUHS]
486				75 2BSD tapes shipped
4872.79BSD			1980-04-xx [TUHS]
4882.8BSD			1981-07-xx [KSJ]
489
4902.8.1BSD		1982-01-xx [QCU]
491				set of performance improvements
4922.9BSD			1983-07-xx [KSJ]
4932.9.1BSD                1983-11-xx [TUHS]
4942.9BSD-Seismo		1985-08-xx [SMS]
4952.10BSD			1987-04-xx [KKK]
4962.10.1BSD		1989-01-xx [SMS]
4972.11BSD			1991-03-14 [SMS]
4982.11BSD rev #430	1999-12-13 [SMS]
499
50032V			1978-1[01]-xx [QCU] 1979-03-26 [TUHS]
5013BSD                    late 1979 [QCU] March 1980 [TUHS]
502				virtual memory, page replacement,
503                        	demand paging
5044.0BSD                  1980-10-xx
5054.1BSD                  1981-07-08 [DOC]
5064.1aBSD                 1982-04-xx
507				alpha release, 100 sites, networking [44B]
5084.1bBSD				internal release, fast filesystem [44B]
5094.1cBSD                 late 1982
510				beta release, IPC [44B]
5114.2BSD                  1983-09-xx [QCU]
512                        1983-08-03 [DOC]
5134.3BSD                  1986-06-xx [QCU]
514			1986-04-05 [KB], [DOC]
5154.3BSD Tahoe            1988-06-15 [QCU], [DOC]
5164.3BSD NET/1            1988-11-xx [QCU]
517                        1989-01-01 [DOC]
5184.3BSD Reno             1990-06-29 [QCU], [DOC]
5194.3BSD NET/2            1991-06-28 [QCU], [DOC]
520
521BSD/386 ALPHA		1991-12-xx [BSDI]
522				first code released to people outside BSDI
523386BSD 0.0              1992-02-xx [DOC]
524BSD/386 0.3.1	        1992-04-xx [BSDI] first ext. beta; B customers
525BSD/386 0.3.3		1992-06-xx [BSDI] first CDROM version
526386BSD 0.1              1992-07-28 [DOC]
5274.4BSD Alpha            1992-07-07
528BSD/386 0.9.3		1992-10-xx [BSDI]
529				first external gamma; G customers
530BSD/386 0.9.4		1992-12-xx [BSDI]
531				would have been 1.0 except for request
532				for preliminary injunction
533BSD/386 1.0 		1993-03-xx [BSDI]
534				injunction denied; first official release
535NetBSD 0.8              1993-04-20 [NBD]
5364.4BSD                  1993-06-01 [USE]
537NetBSD 0.9              1993-08-23 [NBD]
538FreeBSD 1.0		1993-11-01 [FBD]
539FreeBSD 1.0.2		1993-11-14 [FBD]
540				supersedes 1.0 13 days after release.
541BSD/386 1.1		1994-02-xx [BSDI]
5424.4BSD Lite             1994-03-01 [USE]
543FreeBSD 1.1		1994-05-07 [FBD]
544FreeBSD 1.1.5		1994-06-30 [FBD]
545FreeBSD 1.1.5.1		1994-07-05 [FBD]
546				supersedes 1.1.5 5 days after release.
547NetBSD 1.0              1994-10-26 [NBD]
548386BSD 1.0              1994-11-12 [USE]
549FreeBSD 2.0		1994-11-23 [FBD]
550BSD/OS 2.0		1995-01-xx [BSDI] 4.4 lite based
551FreeBSD 2.0.5		1995-06-10 [FBD]
552BSD/OS 2.0.1		1995-06-xx [BSDI]
5534.4BSD Lite Release 2	1995-06-xx [44B]
554				the true final distribution from the CSRG
555FreeBSD 2.1.0		1995-11-19 [FBD]
556NetBSD 1.1              1995-11-26 [NBD]
557BSD/OS 2.1		1996-01-xx [BSDI]
558FreeBSD 2.1.5		1996-07-14 [FBD]
559NetBSD 1.2              1996-10-04 [NBD]
560OpenBSD 2.0             1996-10-18 [OBD]
561FreeBSD 2.1.6		1996-11-16 [FBD]
562FreeBSD 2.1.6.1		1996-11-25 [FBD] (sendmail security release)
563Rhapsody		1997-xx-xx
564FreeBSD 2.1.7		1997-02-20 [FBD]
565BSD/OS 3.0		1997-02-xx [BSDI] 4.4 lite2 based
566FreeBSD 2.2.0		1997-03-16 [FBD]
567FreeBSD 2.2.1		1997-03-25 [FBD]
568FreeBSD 2.2.2		1997-05-16 [FBD]
569NetBSD 1.2.1            1997-05-20 [NBD] (patch release)
570OpenBSD 2.1             1997-06-01 [OBD]
571FreeBSD 2.2.5		1997-10-22 [FBD]
572OpenBSD 2.2             1997-12-01 [OBD]
573NetBSD 1.3              1998-01-04 [NBD]
574FreeBSD 2.2.6		1998-03-25 [FBD]
575NetBSD 1.3.1            1998-03-09 [NBD] (patch release)
576BSD/OS 3.1		1998-03-xx [BSDI]
577OpenBSD 2.3             1998-05-19 [OBD]
578NetBSD 1.3.2            1998-05-29 [NBD] (patch release)
579FreeBSD 2.2.7		1998-07-22 [FBD]
580BSD/OS 4.0		1998-08-xx [BSDI]
581				2-lock MP support, ELF executables
582FreeBSD 3.0		1998-10-16 [FBD]
583				FreeBSD-3.0 is a snapshot from -current,
584				while 3.1 and 3.2 are from 3.x-stable which
585				was branched quite some time after 3.0-release
586FreeBSD 2.2.8           1998-11-29 [FBD]
587OpenBSD 2.4             1998-12-01 [OBD]
588NetBSD 1.3.3            1998-12-23 [NBD] (patch release)
589FreeBSD 3.1		1999-02-15 [FBD]
590BSD/OS 4.0.1		1999-03-xx [BSDI]
591NetBSD 1.4              1999-05-12 [NBD]
592FreeBSD 3.2             1999-05-17 [FBD]
593OpenBSD 2.5             1999-05-19 [OBD]
594NetBSD 1.4.1            1999-08-26 [NBD] (patch release)
595FreeBSD 3.3             1999-09-17 [FBD]
596OpenBSD 2.6             1999-12-01 [OBD]
597FreeBSD 3.4             1999-12-20 [FBD]
598BSD/OS 4.1		1999-12-xx [BSDI]
599FreeBSD 4.0             2000-03-13 [FBD]
600NetBSD 1.4.2            2000-03-19 [NBD] (patch release)
601OpenBSD 2.7             2000-06-15 [OBD]
602FreeBSD 3.5		2000-06-24 [FBD]
603FreeBSD 4.1		2000-07-27 [FBD]
604FreeBSD 3.5.1		2000-07-28 [FBD]
605FreeBSD 4.1.1		2000-09-25 [FBD] (a network-only patch release)
606FreeBSD 4.2  		2000-11-21 [FBD]
607NetBSD 1.4.3		2000-11-25 [NBD] (patch release)
608BSD/OS 4.2		2000-11-29 [BSDI]
609OpenBSD 2.8		2000-12-01 [OBD]
610NetBSD 1.5              2000-12-06 [NBD]
611Mac OS X 10.0           2001-03-24 [APL]
612FreeBSD 4.3  		2001-04-20 [FBD]
613OpenBSD 2.9  		2001-06-01 [OBD]
614NetBSD 1.5.1		2001-07-11 [NBD] (patch release)
615NetBSD 1.5.2		2001-09-13 [NBD] (patch release)
616FreeBSD 4.4  		2001-09-18 [FBD]
617Mac OS X 10.1		2001-09-29 [APL]
618OpenBSD 3.0		2001-12-01 [OBD]
619FreeBSD 4.5  		2002-01-29 [FBD]
620BSD/OS 4.3		2002-03-14 [WRS]
621OpenBSD 3.1		2002-05-19 [OBD]
622FreeBSD 4.6  		2002-06-15 [FBD]
623NetBSD 1.5.3		2002-07-22 [NBD] (patch release)
624FreeBSD 4.6.2		2002-08-15 [FBD] (patch release)
625Mac OS X 10.2		2002-08-23 [APL]
626NetBSD 1.6		2002-09-14 [NBD]
627FreeBSD 4.7		2002-10-08 [FBD]
628OpenBSD 3.2		2002-11-01 [OBD]
629FreeBSD 5.0		2003-01-17 [FBD]
630				FreeBSD 5.0 is a separate branch off of
631				-current, similar to 3.0.
632FreeBSD 4.8		2003-04-03 [FBD]
633NetBSD 1.6.1		2003-04-21 [NBD] (patch release)
634OpenBSD 3.3		2003-05-01 [OBD]
635BSD/OS 5.0		2003-05-?? [WRS]
636FreeBSD 5.1		2003-06-09 [FBD]
637Mac OS X 10.3		2003-10-24 [APL]
638FreeBSD 4.9		2003-10-28 [FBD]
639BSD/OS 5.1 ISE		2003-10-?? [WRS] (final version)
640OpenBSD 3.4		2003-11-01 [OBD]
641FreeBSD 5.2		2004-01-12 [FBD]
642FreeBSD 5.2.1		2004-02-22 [FBD] (patch release)
643NetBSD 1.6.2		2004-03-01 [NBD] (patch release)
644OpenBSD 3.5		2004-04-01 [OBD]
645FreeBSD 4.10		2004-05-27 [FBD]
646DragonFly 1.0		2004-07-12 [DFB]
647OpenBSD 3.6		2004-10-29 [OBD]
648FreeBSD 5.3		2004-11-06 [FBD]
649NetBSD 2.0		2004-12-09 [NBD]
650FreeBSD 4.11		2005-01-25 [FBD]
651DragonFly 1.2.0		2005-04-08 [DFB]
652NetBSD 2.0.2		2005-04-14 [NBD] (security/critical release)
653Mac OS X 10.4		2005-04-29 [APL]
654FreeBSD 5.4		2005-05-09 [FBD]
655OpenBSD 3.7		2005-05-19 [OBD]
656NetBSD 2.0.3		2005-10-31 [NBD] (security/critical release)
657OpenBSD 3.8		2005-11-01 [OBD]
658FreeBSD 6.0		2005-11-01 [FBD]
659NetBSD 2.1		2005-11-02 [NBD]
660NetBSD 3.0		2005-12-23 [NBD]
661DragonFly 1.4.0		2006-01-08 [DFB]
662FreeBSD 2.2.9		2006-04-01 [FBD]
663OpenBSD 3.9		2006-05-01 [OBD]
664FreeBSD 6.1		2006-05-08 [FBD]
665FreeBSD 5.5		2006-05-25 [FBD]
666NetBSD 3.0.1		2006-07-24 [NBD] (security/critical release)
667DragonFly 1.6.0		2006-07-24 [DFB]
668OpenBSD 4.0		2006-11-01 [OBD]
669NetBSD 3.0.2		2006-11-04 [NBD] (security/critical release)
670NetBSD 3.1		2006-11-04 [NBD]
671FreeBSD 6.2		2007-01-15 [FBD]
672DragonFly 1.8.0		2007-01-30 [DFB]
673OpenBSD 4.1		2007-05-01 [OBD]
674DragonFly 1.10.0	2007-08-06 [DFB]
675Mac OS X 10.5		2007-10-26 [APL]
676OpenBSD 4.2		2007-11-01 [OBD]
677NetBSD 4.0		2007-12-19 [NBD]
678FreeBSD 6.3		2008-01-18 [FBD]
679DragonFly 1.12.0	2008-02-26 [DFB]
680FreeBSD 7.0		2008-02-27 [FBD]
681OpenBSD 4.3		2008-05-01 [OBD]
682DragonFly 2.0.0		2008-07-21 [DFB]
683OpenBSD 4.4		2008-11-01 [OBD]
684FreeBSD 6.4		2008-11-28 [FBD]
685FreeBSD 7.1		2009-01-04 [FBD]
686DragonFly 2.2.0		2009-02-17 [DFB]
687NetBSD 5.0		2009-04-29 [NBD]
688OpenBSD 4.5		2009-05-01 [OBD]
689FreeBSD 7.2		2009-05-04 [FBD]
690Mac OS X 10.6		2009-06-08 [APL]
691NetBSD 5.0.1		2009-08-02 [NBD] (security/critical release)
692DragonFly 2.4.0		2009-09-16 [DFB]
693OpenBSD 4.6		2009-10-18 [OBD]
694FreeBSD 8.0		2009-11-26 [FBD]
695NetBSD 5.0.2		2010-02-12 [NBD] (security/critical release)
696FreeBSD 7.3		2010-03-23 [FBD]
697DragonFly 2.6.0		2010-03-28 [DFB]
698OpenBSD 4.7		2010-05-19 [OBD]
699FreeBSD 8.1		2010-07-24 [FBD]
700DragonFly 2.8.2		2010-10-30 [DFB]
701OpenBSD 4.8		2010-11-01 [OBD]
702NetBSD 5.1		2010-11-19 [NBD]
703FreeBSD 7.4		2011-02-24 [FBD]
704FreeBSD 8.2		2011-02-24 [FBD]
705DragonFly 2.10.1	2011-04-26 [DFB]
706OpenBSD 4.9		2011-05-01 [OBD]
707Mac OS X 10.7		2011-07-20 [APL]
708OpenBSD 5.0		2011-11-01 [OBD]
709FreeBSD 9.0		2012-01-12 [FBD]
710NetBSD 5.1.2		2012-02-02 [NBD] (security/critical release)
711DragonFly 3.0.1		2012-02-21 [DFB]
712FreeBSD 8.3		2012-04-18 [FBD]
713OpenBSD 5.1		2012-05-01 [OBD]
714Mac OS X 10.8		2012-07-25 [APL]
715NetBSD 6.0		2012-10-17 [NBD]
716OpenBSD 5.2		2012-11-01 [OBD]
717DragonFly 3.2.1		2012-11-02 [DFB]
718NetBSD 5.2		2012-12-03 [NBD]
719NetBSD 6.0.1		2012-12-26 [NBD] (security/critical release)
720FreeBSD 9.1		2012-12-30 [FBD]
721DragonFly 3.4.1		2013-04-29 [DFB]
722OpenBSD 5.3		2013-05-01 [OBD]
723NetBSD 6.0.2		2013-05-18 [NBD] (security/critical release)
724NetBSD 6.1		2013-05-18 [NBD]
725FreeBSD 8.4		2013-06-07 [FBD]
726NetBSD 6.1.1		2013-08-22 [NBD]
727NetBSD 5.1.3		2013-09-29 [NBD]
728NetBSD 5.2.1		2013-09-29 [NBD]
729FreeBSD 9.2		2013-09-30 [FBD]
730NetBSD 6.0.3		2013-09-30 [NBD]
731NetBSD 6.1.2		2013-09-30 [NBD]
732Mac OS X 10.9		2013-10-22 [APL]
733OpenBSD 5.4		2013-11-01 [OBD]
734DragonFly 3.6.0 	2013-11-25 [DFB]
735FreeBSD 10.0		2014-01-20 [FBD]
736NetBSD 5.1.4		2014-01-25 [NBD]
737NetBSD 5.2.2		2014-01-25 [NBD]
738NetBSD 6.0.4		2014-01-25 [NBD]
739NetBSD 6.1.3		2014-01-25 [NBD]
740DragonFly 3.6.1 	2014-02-22 [DFB]
741DragonFly 3.6.2		2014-04-10 [DFB]
742NetBSD 6.0.5		2014-04-12 [NBD]
743NetBSD 6.1.4		2014-04-12 [NBD]
744OpenBSD 5.5		2014-05-01 [OBD]
745DragonFly 3.8.0		2014-06-04 [DFB]
746DragonFly 3.8.1		2014-06-16 [DFB]
747DragonFly 3.6.3		2014-06-17 [DFB]
748FreeBSD 9.3		2014-07-05 [FBD]
749DragonFly 3.8.2		2014-08-08 [DFB]
750NetBSD 6.0.6		2014-09-22 [NBD]
751NetBSD 6.1.5		2014-09-22 [NBD]
752Mac OS X 10.10		2014-10-16 [APL]
753OpenBSD 5.6		2014-11-01 [OBD]
754FreeBSD 10.1		2014-11-14 [FBD]
755DragonFly 4.0.1		2014-11-25 [DFB]
756DragonFly 4.0.2		2015-01-07 [DFB]
757DragonFly 4.0.3		2015-01-21 [DFB]
758DragonFly 4.0.4		2015-03-09 [DFB]
759DragonFly 4.0.5		2015-03-23 [DFB]
760OpenBSD 5.7		2015-05-01 [OBD]
761DragonFly 4.2.0		2015-06-29 [DFB]
762FreeBSD 10.2            2015-08-13 [FBD]
763NetBSD 7.0		2015-09-25 [NBD]
764OS X 10.11		2015-09-30 [APL]
765OpenBSD 5.8		2015-10-18 [OBD]
766DragonFly 4.4.1		2015-12-07 [DFB]
767OpenBSD 5.9		2016-03-29 [OBD]
768FreeBSD 10.3		2016-04-04 [FBD]
769NetBSD 7.0.1		2016-05-22 [NBD]
770DragonFly 4.6.0		2016-08-02 [DFB]
771OpenBSD 6.0		2016-09-01 [OBD]
772macOS 10.12		2016-09-20 [APL]
773FreeBSD 11.0		2016-10-10 [FBD]
774NetBSD 7.0.2		2016-10-21 [NBD]
775NetBSD 7.1		2017-03-11 [NBD]
776DragonFly 4.8.0		2017-03-27 [DFB]
777OpenBSD 6.1		2017-04-11 [OBD]
778FreeBSD 11.1		2017-07-26 [FBD]
779macOS 10.13		2017-09-25 [APL]
780FreeBSD 10.4		2017-10-03 [FBD]
781OpenBSD 6.2		2017-10-09 [OBD]
782DragonFly 5.0.0		2017-10-16 [DFB]
783DragonFly 5.0.1		2017-11-06 [DFB]
784DragonFly 5.0.2		2017-12-04 [DFB]
785NetBSD 7.1.1		2017-12-22 [NBD]
786NetBSD 7.1.2		2018-03-15 [NBD]
787OpenBSD 6.3		2018-04-02 [OBD]
788DragonFly 5.2.0		2018-04-10 [DFB]
789DragonFly 5.2.1		2018-05-20 [DFB]
790DragonFly 5.2.2		2018-06-18 [DFB]
791FreeBSD 11.2		2018-06-27 [FBD]
792NetBSD 8.0		2018-07-17 [NBD]
793NetBSD 7.2		2018-08-29 [NBD]
794macOS 10.14		2018-09-24 [APL]
795OpenBSD 6.4		2018-10-18 [OBD]
796DragonFly 5.4.0		2018-12-03 [DFB]
797FreeBSD 12.0		2018-12-11 [FBD]
798DragonFly 5.4.1		2018-12-24 [DFB]
799OpenBSD 6.5		2019-05-01 [OBD]
800NetBSD 8.1		2019-06-04 [NBD]
801DragonFly 5.6		2019-06-17 [DFB]
802DragonFly 5.6.1		2019-06-19 [DFB]
803FreeBSD 11.3		2019-07-09 [FBD]
804DragonFly 5.6.2		2019-08-11 [DFB]
805OpenBSD 6.6		2019-10-17 [OBD]
806macOS 10.15		2019-10-07 [APL]
807macOS 10.15.1		2019-10-29 [APL] (security/critical release)
808FreeBSD 12.1		2019-11-04 [FBD]
809NetBSD 9.0 		2020-02-14 [NBD]
810DragonFly 5.8 		2020-03-03 [DFB]
811DragonFly 5.6.3 	2020-03-11 [DFB]
812NetBSD 8.2 		2020-03-31 [NBD]
813
814Bibliography
815------------------------
816
817Leffler, Samuel J., Marshall Kirk McKusick, Michael J Karels and John
818Quarterman. The Design and Implementation of the 4.3BSD UNIX Operating
819System. Reading, Mass. Addison-Wesley, 1989. ISBN 0-201-06196-1
820
821Salus, Peter H. A quarter century of UNIX. Addison-Wesley Publishing
822Company, Inc., 1994. ISBN 0-201-54777-5
823
824McKusick, Marshall Kirk, Keith Bostic, Michael J Karels, and John
825Quarterman. The Design and Implementation of the 4.4BSD Operating
826System. Reading, Mass. Addison-Wesley, 1996. ISBN 0-201-54979-4
827
828McKusick, Marshall Kirk, George Neville-Neil. The Design and
829Implementation of the FreeBSD Operating System.
830Addison-Wesley Professional, Published: Aug 2, 2004. ISBN 0-201-70245-2
831
832McKusick, Marshall Kirk, George Neville-Neil, Robert Watson. The
833Design and Implementation of the FreeBSD Operating System, 2nd Edition.
834Pearson Education, Inc., 2014. ISBN 0-321-96897-2
835
836Doug McIlroy. Research Unix Reader.
837
838Michael G. Brown. The Role of BSD in the Development of Unix.
839Presented to the Tasmanian Unix Special Interest Group of the
840Australian Computer Society, Hobart, August 1993.
841
842Peter H. Salus. Unix at 25. Byte Magazine, October 1994.
843URL: http://www.byte.com/art/9410/sec8/art3.htm
844
845Andreas Klemm, Lars Köller. If you're going to San Francisco ...
846Die freien BSD-Varianten von Unix. c't April 1997, page 368ff.
847
848BSD Release Announcements collection.
849URL: https://www.FreeBSD.org/releases/
850
851BSD Hypertext Man Pages
852URL: https://www.FreeBSD.org/cgi/man.cgi
853
854UNIX history graphing project
855URL: http://minnie.tuhs.org/Unix_History/index.html
856
857UNIX history
858URL: http://www.levenez.com/unix/
859
860James Howard: The BSD Family Tree
861URL: http://ezine.daemonnews.org/200104/bsd_family.html
862("what are the differences between FreeBSD, NetBSD, and OpenBSD?")
863
864
865Acknowledgments
866---------------
867
868Josh Gilliam for suggestions, bug fixes, and finding very old
869original BSD announcements from Usenet or tapes.
870
871Steven M. Schultz for providing 2.8BSD, 2.10BSD, 2.11BSD manual pages.
872
873--
874Copyright (c) 1997-2012 Wolfram Schneider <wosch@FreeBSD.ORG>
875URL: https://svnweb.freebsd.org/base/head/share/misc/bsd-family-tree
876
877$FreeBSD$
878