xref: /freebsd/share/misc/bsd-family-tree (revision a2aef24aa3c8458e4036735dd6928b4ef77294e5)
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 5.0       OpenBSD 4.5                 |
233 |             \      |      | |    \          |                       |
234 |              |  Mac OS X  | |     \         |                       |
235 |              |    10.6    | |      \        |                       |
236 |              |     |      | |   NetBSD      |               DragonFly 2.4.0
237 |              |     |      | |    5.0.1  OpenBSD 4.6                 |
238 |              |     |      | |       |       |                       |
239 *--FreeBSD     |     |      | |       |       |                       |
240 |    8.0       |     |      | |       |       |                       |
241 |     |     FreeBSD  |      | |   NetBSD      |                       |
242 |     |       7.3    |      | |    5.0.2      |               DragonFly 2.6.0
243 |     |        |     |      | |           OpenBSD 4.7                 |
244 |  FreeBSD     |     |      | |               |                       |
245 |    8.1       |     |      | |               |                       |
246 |     |        |     |      | |               |               DragonFly 2.8.2
247 |     |        |     |      | |           OpenBSD 4.8                 |
248 |     |        |     |      | *--NetBSD       |                       |
249 |  FreeBSD  FreeBSD  |      | |    5.1        |                       |
250 |    8.2      7.4    |      | |      |        |               DragonFly 2.10.1
251 |     |              |      | |      |    OpenBSD 4.9                 |
252 |     `-----.     Mac OS X  | |      |        |                       |
253 |            \      10.7    | |      |        |                       |
254 |             |      |      | |      |    OpenBSD 5.0                 |
255 *--FreeBSD    |      |      | |      |        |                       |
256 |    9.0      |      |      | |   NetBSD      |               DragonFly 3.0.1
257 |     |    FreeBSD   |      | |    5.1.2      |                       |
258 |     |      8.3     |      | |      |        |                       |
259 |     |       |      |      | |   NetBSD      |                       |
260 |     |       |      |      | |    5.1.3      |                       |
261 |     |       |      |      | |      |        |                       |
262 |     |       |      |      | |   NetBSD      |                       |
263 |     |       |      |      | |    5.1.4      |                       |
264 |     |       |      |      | |           OpenBSD 5.1                 |
265 |     |       |   Mac OS X  | `----.          |                       |
266 |     |       |     10.8    |       \         |                       |
267 |     |       |      |   NetBSD 6.0  |        |                       |
268 |     |       |      |      | | |    |    OpenBSD 5.2         DragonFly 3.2.1
269 |  FreeBSD    |      |      | | | NetBSD      |                       |
270 |    9.1      |      |      | | |   5.2       |                       |
271 |     |       |      |      | | |    |        |                       |
272 |     |       |      |      | | | NetBSD      |                       |
273 |     |       |      |      | | |  5.2.1      |                       |
274 |     |       |      |      | | |    |        |                       |
275 |     |       |      |      | | | NetBSD      |                       |
276 |     |       |      |      | | |  5.2.2      |                       |
277 |     |       |      |      | | |             |                       |
278 |     |       |      |      | |  \            |                       |
279 |     |       |      |      | |   NetBSD      |                       |
280 |     |       |      |      | |    6.0.1      |                       |
281 |     |       |      |      | |      |   OpenBSD 5.3          DragonFly 3.4.1
282 |     |       |      |      | |   NetBSD      |                       |
283 |     |       |      |      | |    6.0.2      |                       |
284 |     |       |      |      | |      |        |                       |
285 |     |       |      |      | |   NetBSD      |                       |
286 |     |       |      |      | |    6.0.3      |                       |
287 |     |       |      |      | |      |        |                       |
288 |     |       |      |      | |   NetBSD      |                       |
289 |     |       |      |      | |    6.0.4      |                       |
290 |     |       |      |      | |      |        |                       |
291 |     |       |      |      | |   NetBSD      |                       |
292 |     |       |      |      | |    6.0.5      |                       |
293 |     |       |      |      | |               |                       |
294 |     |       |      |      | |`-NetBSD 6.1   |                       |
295 |     |    FreeBSD   |      |       |         |                       |
296 |     |      8.4     |      |    NetBSD 6.1.1 |                       |
297 |     |              |      |       |         |                       |
298 |  FreeBSD           |      |    NetBSD 6.1.2 |                       |
299 |    9.2          Mac OS X  |       |         |                       |
300 |     |             10.9    |       |    OpenBSD 5.4                  |
301 |     `-----.        |      |       |         |               DragonFly 3.6.0
302 |            \       |      |       |         |                       |
303 *--FreeBSD    |      |      |    NetBSD 6.1.3 |                       |
304 |   10.0      |      |      |       |         |                       |
305 |     |       |      |      |       |         |               DragonFly 3.6.1
306 |     |       |      |      |       |         |                       |
307 |     |       |      |      |       |         |                       |
308 |     |       |      |      |       |         |               DragonFly 3.6.2
309 |     |       |      |      |    NetBSD 6.1.4 |                       |
310 |     |       |      |      |       |         |                       |
311 |     |       |      |      |       |    OpenBSD 5.5                  |
312 |     |       |      |      |       |         |                       |
313 |     |       |      |      |       |         |               DragonFly 3.8.0
314 |     |       |      |      |       |         |                       |
315 |     |       |      |      |       |         |                       |
316 |     |       |      |      |       |         |               DragonFly 3.8.1
317 |     |       |      |      |       |         |                       |
318 |     |       |      |      |       |         |                       |
319 |     |       |      |      |       |         |               DragonFly 3.6.3
320 |     |       |      |      |       |         |                       |
321 |     |    FreeBSD   |      |       |         |                       |
322 |     |      9.3     |      |       |         |                       |
323 |     |              |      |    NetBSD 6.1.5 |               DragonFly 3.8.2
324 |     |           Mac OS X  |                 |                       |
325 |     |             10.10   |                 |                       |
326 |     |              |      |            OpenBSD 5.6                  |
327 |  FreeBSD           |      |                 |                       |
328 |   10.1             |      |                 |               DragonFly 4.0.1
329 |     |              |      |                 |                       |
330 |     |              |      |                 |               DragonFly 4.0.2
331 |     |              |      |                 |                       |
332 |     |              |      |                 |               DragonFly 4.0.3
333 |     |              |      |                 |                       |
334 |     |              |      |                 |               DragonFly 4.0.4
335 |     |              |      |                 |                       |
336 |     |              |      |                 |               DragonFly 4.0.5
337 |     |              |      |                 |                       |
338 |     |              |      |            OpenBSD 5.7                  |
339 |     |              |      |                 |               DragonFly 4.2.0
340 |  FreeBSD           |      |                 |                       |
341 |   10.2             |      |                 |                       |
342 |     |            macOS  NetBSD 7.0           |                       |
343 |     |            10.11    |            OpenBSD 5.8                  |
344 |     |              |      |                 |               DragonFly 4.4.1
345 |  FreeBSD           |      |            OpenBSD 5.9                  |
346 |   10.3             |      |                 |                       |
347 |     |              |   NetBSD 7.0.1         |                       |
348 |     `------.       |      |                 |               DragonFly 4.6.0
349 |            |       |      |                 |                       |
350 |            |       |      |                 |                       |
351 *--FreeBSD   |     macOS    |            OpenBSD 6.0                  |
352 |   11.0     |     10.12    |                 |                       |
353 |     |      |       |   NetBSD 7.1           |                       |
354 |     |      |     macOS    |                 |               DragonFly 4.8.0
355 |     |      |     10.13    |            OpenBSD 6.1                  |
356 |  FreeBSD   |       |      |                 |                       |
357 |   11.1  FreeBSD    |      |                 |                       |
358 |     |    10.4      |      |            OpenBSD 6.2                  |
359 |     v              |      |                 |               DragonFly 5.0.0
360 |                    |      |                 |                       |
361FreeBSD 12 -current   |  NetBSD -current  OpenBSD -current    DragonFly -current
362 |                    |      |                 |                       |
363 v                    v      v                 v                       v
364
365Time
366----------------
367
368Time tolerance +/- 6 months, depending on which book/article you read; if it
369was the announcement in Usenet or if it was available as tape.
370
371[44B] McKusick, Marshall Kirk, Keith Bostic, Michael J Karels,
372	and John Quarterman. The Design and Implementation of
373	the 4.4BSD Operating System.
374[APL] Apple website [https://www.apple.com/macosx/]
375[BSDI] Berkeley Software Design, Inc.
376[DFB] DragonFlyBSD Project, The.
377[DOC] README, COPYRIGHT on tape.
378[FBD] FreeBSD Project, The.
379[KB]  Keith Bostic. BSD2.10 available from Usenix. comp.unix.sources,
380	Volume 11, Info 4, April, 1987.
381[KKK] Mike Karels, Kirk McKusick, and Keith Bostic. tahoe announcement.
382	comp.bugs.4bsd.ucb-fixes, June 15, 1988.
383[KSJ] Michael J. Karels, Carl F. Smith, and William F. Jolitz.
384	Changes in the Kernel in 2.9BSD. Second Berkeley Software
385	Distribution UNIX Version 2.9, July, 1983.
386[NBD] NetBSD Project, The.
387[OBD] OpenBSD Project, The.
388[QCU] Salus, Peter H. A quarter century of UNIX.
389[SMS] Steven M. Schultz. 2.11BSD, UNIX for the PDP-11.
390[TUHS] The Unix Historical Society.  http://minnie.tuhs.org/Unix_History/.
391[USE] Usenet announcement.
392[WRS] Wind River Systems, Inc.
393[dmr] Dennis Ritchie, via E-Mail
394
395Multics                 1965
396UNIX                    Summer 1969
397				DEC PDP-7
398First   Edition         1971-11-03 [QCU]
399				DEC PDP-11/20, Assembler
400Second  Edition         1972-06-12 [QCU]
401				10 UNIX installations
402Third   Edition         1973-02-xx [QCU]
403				Pipes, 16 installations
404Fourth  Edition         1973-11-xx [QCU]
405				rewriting in C effected,
406                                above 30 installations
407Fifth   Edition         1974-06-xx [QCU]
408				above 50 installations
409Sixth   Edition         1975-05-xx [QCU]
410				port to DEC Vax
411Seventh Edition         1979-01-xx [QCU]
412				first portable UNIX
413Eighth  Edition         1985-02-xx [QCU]
414				VAX 11/750, VAX 11/780 [dmr]
415				descended from 4.1c BSD [dmr]
416				descended from 4.1 BSD [44B]
417			scooping-out and replacement of the character-device
418			and networking part by the streams mechanism
419
420Ninth   Edition         1986-09-xx [QCU]
421Tenth   Edition         1989-10-xx [QCU]
422
4231BSD                    late 1977
424			1978-03-09 [QCU]
425				PDP-11, Pascal, ex(1)
426				30 free copies of 1BSD sent out
427				35 tapes sold for 50 USD [QCU]
4282BSD                    mid 1978 [QCU] 1979-05-10 [TUHS]
429				75 2BSD tapes shipped
4302.79BSD			1980-04-xx [TUHS]
4312.8BSD			1981-07-xx [KSJ]
432
4332.8.1BSD		1982-01-xx [QCU]
434				set of performance improvements
4352.9BSD			1983-07-xx [KSJ]
4362.9.1BSD                1983-11-xx [TUHS]
4372.9BSD-Seismo		1985-08-xx [SMS]
4382.10BSD			1987-04-xx [KKK]
4392.10.1BSD		1989-01-xx [SMS]
4402.11BSD			1992-02-xx [SMS]
4412.11BSD rev #430	1999-12-13 [SMS]
442
44332V			1978-1[01]-xx [QCU]
4443BSD                    late 1979 [QCU] March 1980 [TUHS]
445				virtual memory, page replacement,
446                        	demand paging
4474.0BSD                  1980-10-xx
4484.1BSD                  1981-07-08 [DOC]
4494.1aBSD                 1982-04-xx
450				alpha release, 100 sites, networking [44B]
4514.1bBSD				internal release, fast filesystem [44B]
4524.1cBSD                 late 1982
453				beta release, IPC [44B]
4544.2BSD                  1983-09-xx [QCU]
455                        1983-08-03 [DOC]
4564.3BSD                  1986-06-xx [QCU]
457			1986-04-05 [KB], [DOC]
4584.3BSD Tahoe            1988-06-15 [QCU], [DOC]
4594.3BSD NET/1            1988-11-xx [QCU]
460                        1989-01-01 [DOC]
4614.3BSD Reno             1990-06-29 [QCU], [DOC]
4624.3BSD NET/2            1991-06-28 [QCU], [DOC]
463
464BSD/386 ALPHA		1991-12-xx [BSDI]
465				first code released to people outside BSDI
466386BSD 0.0              1992-02-xx [DOC]
467BSD/386 0.3.1	        1992-04-xx [BSDI] first ext. beta; B customers
468BSD/386 0.3.3		1992-06-xx [BSDI] first CDROM version
469386BSD 0.1              1992-07-28 [DOC]
4704.4BSD Alpha            1992-07-07
471BSD/386 0.9.3		1992-10-xx [BSDI]
472				first external gamma; G customers
473BSD/386 0.9.4		1992-12-xx [BSDI]
474				would have been 1.0 except for request
475				for preliminary injunction
476BSD/386 1.0 		1993-03-xx [BSDI]
477				injunction denied; first official release
478NetBSD 0.8              1993-04-20 [NBD]
4794.4BSD                  1993-06-01 [USE]
480NetBSD 0.9              1993-08-23 [NBD]
481FreeBSD 1.0		1993-11-01 [FBD]
482FreeBSD 1.0.2		1993-11-14 [FBD]
483				supersedes 1.0 13 days after release.
484BSD/386 1.1		1994-02-xx [BSDI]
4854.4BSD Lite             1994-03-01 [USE]
486FreeBSD 1.1		1994-05-07 [FBD]
487FreeBSD 1.1.5		1994-06-30 [FBD]
488FreeBSD 1.1.5.1		1994-07-05 [FBD]
489				supersedes 1.1.5 5 days after release.
490NetBSD 1.0              1994-10-26 [NBD]
491386BSD 1.0              1994-11-12 [USE]
492FreeBSD 2.0		1994-11-23 [FBD]
493BSD/OS 2.0		1995-01-xx [BSDI] 4.4 lite based
494FreeBSD 2.0.5		1995-06-10 [FBD]
495BSD/OS 2.0.1		1995-06-xx [BSDI]
4964.4BSD Lite Release 2	1995-06-xx [44B]
497				the true final distribution from the CSRG
498FreeBSD 2.1.0		1995-11-19 [FBD]
499NetBSD 1.1              1995-11-26 [NBD]
500BSD/OS 2.1		1996-01-xx [BSDI]
501FreeBSD 2.1.5		1996-07-14 [FBD]
502NetBSD 1.2              1996-10-04 [NBD]
503OpenBSD 2.0             1996-10-18 [OBD]
504FreeBSD 2.1.6		1996-11-16 [FBD]
505FreeBSD 2.1.6.1		1996-11-25 [FBD] (sendmail security release)
506Rhapsody		1997-xx-xx
507FreeBSD 2.1.7		1997-02-20 [FBD]
508BSD/OS 3.0		1997-02-xx [BSDI] 4.4 lite2 based
509FreeBSD 2.2.0		1997-03-16 [FBD]
510FreeBSD 2.2.1		1997-03-25 [FBD]
511FreeBSD 2.2.2		1997-05-16 [FBD]
512NetBSD 1.2.1            1997-05-20 [NBD] (patch release)
513OpenBSD 2.1             1997-06-01 [OBD]
514FreeBSD 2.2.5		1997-10-22 [FBD]
515OpenBSD 2.2             1997-12-01 [OBD]
516NetBSD 1.3              1998-01-04 [NBD]
517FreeBSD 2.2.6		1998-03-25 [FBD]
518NetBSD 1.3.1            1998-03-09 [NBD] (patch release)
519BSD/OS 3.1		1998-03-xx [BSDI]
520OpenBSD 2.3             1998-05-19 [OBD]
521NetBSD 1.3.2            1998-05-29 [NBD] (patch release)
522FreeBSD 2.2.7		1998-07-22 [FBD]
523BSD/OS 4.0		1998-08-xx [BSDI]
524				2-lock MP support, ELF executables
525FreeBSD 3.0		1998-10-16 [FBD]
526				FreeBSD-3.0 is a snapshot from -current,
527				while 3.1 and 3.2 are from 3.x-stable which
528				was branched quite some time after 3.0-release
529FreeBSD 2.2.8           1998-11-29 [FBD]
530OpenBSD 2.4             1998-12-01 [OBD]
531NetBSD 1.3.3            1998-12-23 [NBD] (patch release)
532FreeBSD 3.1		1999-02-15 [FBD]
533BSD/OS 4.0.1		1999-03-xx [BSDI]
534NetBSD 1.4              1999-05-12 [NBD]
535FreeBSD 3.2             1999-05-17 [FBD]
536OpenBSD 2.5             1999-05-19 [OBD]
537NetBSD 1.4.1            1999-08-26 [NBD] (patch release)
538FreeBSD 3.3             1999-09-17 [FBD]
539OpenBSD 2.6             1999-12-01 [OBD]
540FreeBSD 3.4             1999-12-20 [FBD]
541BSD/OS 4.1		1999-12-xx [BSDI]
542FreeBSD 4.0             2000-03-13 [FBD]
543NetBSD 1.4.2            2000-03-19 [NBD] (patch release)
544OpenBSD 2.7             2000-06-15 [OBD]
545FreeBSD 3.5		2000-06-24 [FBD]
546FreeBSD 4.1		2000-07-27 [FBD]
547FreeBSD 3.5.1		2000-07-28 [FBD]
548FreeBSD 4.1.1		2000-09-25 [FBD] (a network-only patch release)
549FreeBSD 4.2  		2000-11-21 [FBD]
550NetBSD 1.4.3		2000-11-25 [NBD] (patch release)
551BSD/OS 4.2		2000-11-29 [BSDI]
552OpenBSD 2.8		2000-12-01 [OBD]
553NetBSD 1.5              2000-12-06 [NBD]
554Mac OS X 10.0           2001-03-24 [APL]
555FreeBSD 4.3  		2001-04-20 [FBD]
556OpenBSD 2.9  		2001-06-01 [OBD]
557NetBSD 1.5.1		2001-07-11 [NBD] (patch release)
558NetBSD 1.5.2		2001-09-13 [NBD] (patch release)
559FreeBSD 4.4  		2001-09-18 [FBD]
560Mac OS X 10.1		2001-09-29 [APL]
561OpenBSD 3.0		2001-12-01 [OBD]
562FreeBSD 4.5  		2002-01-29 [FBD]
563BSD/OS 4.3		2002-03-14 [WRS]
564OpenBSD 3.1		2002-05-19 [OBD]
565FreeBSD 4.6  		2002-06-15 [FBD]
566NetBSD 1.5.3		2002-07-22 [NBD] (patch release)
567FreeBSD 4.6.2		2002-08-15 [FBD] (patch release)
568Mac OS X 10.2		2002-08-23 [APL]
569NetBSD 1.6		2002-09-14 [NBD]
570FreeBSD 4.7		2002-10-08 [FBD]
571OpenBSD 3.2		2002-11-01 [OBD]
572FreeBSD 5.0		2003-01-17 [FBD]
573				FreeBSD 5.0 is a separate branch off of
574				-current, similar to 3.0.
575FreeBSD 4.8		2003-04-03 [FBD]
576NetBSD 1.6.1		2003-04-21 [NBD] (patch release)
577OpenBSD 3.3		2003-05-01 [OBD]
578BSD/OS 5.0		2003-05-?? [WRS]
579FreeBSD 5.1		2003-06-09 [FBD]
580Mac OS X 10.3		2003-10-24 [APL]
581FreeBSD 4.9		2003-10-28 [FBD]
582BSD/OS 5.1 ISE		2003-10-?? [WRS] (final version)
583OpenBSD 3.4		2003-11-01 [OBD]
584FreeBSD 5.2		2004-01-12 [FBD]
585FreeBSD 5.2.1		2004-02-22 [FBD] (patch release)
586NetBSD 1.6.2		2004-03-01 [NBD] (patch release)
587OpenBSD 3.5		2004-04-01 [OBD]
588FreeBSD 4.10		2004-05-27 [FBD]
589DragonFly 1.0		2004-07-12 [DFB]
590OpenBSD 3.6		2004-10-29 [OBD]
591FreeBSD 5.3		2004-11-06 [FBD]
592NetBSD 2.0		2004-12-09 [NBD]
593FreeBSD 4.11		2005-01-25 [FBD]
594DragonFly 1.2.0		2005-04-08 [DFB]
595NetBSD 2.0.2		2005-04-14 [NBD] (security/critical release)
596Mac OS X 10.4		2005-04-29 [APL]
597FreeBSD 5.4		2005-05-09 [FBD]
598OpenBSD 3.7		2005-05-19 [OBD]
599NetBSD 2.0.3		2005-10-31 [NBD] (security/critical release)
600OpenBSD 3.8		2005-11-01 [OBD]
601FreeBSD 6.0		2005-11-01 [FBD]
602NetBSD 2.1		2005-11-02 [NBD]
603NetBSD 3.0		2005-12-23 [NBD]
604DragonFly 1.4.0		2006-01-08 [DFB]
605FreeBSD 2.2.9		2006-04-01 [FBD]
606OpenBSD 3.9		2006-05-01 [OBD]
607FreeBSD 6.1		2006-05-08 [FBD]
608FreeBSD 5.5		2006-05-25 [FBD]
609NetBSD 3.0.1		2006-07-24 [NBD] (security/critical release)
610DragonFly 1.6.0		2006-07-24 [DFB]
611OpenBSD 4.0		2006-11-01 [OBD]
612NetBSD 3.0.2		2006-11-04 [NBD] (security/critical release)
613NetBSD 3.1		2006-11-04 [NBD]
614FreeBSD 6.2		2007-01-15 [FBD]
615DragonFly 1.8.0		2007-01-30 [DFB]
616OpenBSD 4.1		2007-05-01 [OBD]
617DragonFly 1.10.0	2007-08-06 [DFB]
618Mac OS X 10.5		2007-10-26 [APL]
619OpenBSD 4.2		2007-11-01 [OBD]
620NetBSD 4.0		2007-12-19 [NBD]
621FreeBSD 6.3		2008-01-18 [FBD]
622DragonFly 1.12.0	2008-02-26 [DFB]
623FreeBSD 7.0		2008-02-27 [FBD]
624OpenBSD 4.3		2008-05-01 [OBD]
625DragonFly 2.0.0		2008-07-21 [DFB]
626OpenBSD 4.4		2008-11-01 [OBD]
627FreeBSD 6.4		2008-11-28 [FBD]
628FreeBSD 7.1		2009-01-04 [FBD]
629DragonFly 2.2.0		2009-02-17 [DFB]
630NetBSD 5.0		2009-04-29 [NBD]
631OpenBSD 4.5		2009-05-01 [OBD]
632FreeBSD 7.2		2009-05-04 [FBD]
633Mac OS X 10.6		2009-06-08 [APL]
634NetBSD 5.0.1		2009-08-02 [NBD] (security/critical release)
635DragonFly 2.4.0		2009-09-16 [DFB]
636OpenBSD 4.6		2009-10-18 [OBD]
637FreeBSD 8.0		2009-11-26 [FBD]
638NetBSD 5.0.2		2010-02-12 [NBD] (security/critical release)
639FreeBSD 7.3		2010-03-23 [FBD]
640DragonFly 2.6.0		2010-03-28 [DFB]
641OpenBSD 4.7		2010-05-19 [OBD]
642FreeBSD 8.1		2010-07-24 [FBD]
643DragonFly 2.8.2		2010-10-30 [DFB]
644OpenBSD 4.8		2010-11-01 [OBD]
645NetBSD 5.1		2010-11-19 [NBD]
646FreeBSD 7.4		2011-02-24 [FBD]
647FreeBSD 8.2		2011-02-24 [FBD]
648DragonFly 2.10.1	2011-04-26 [DFB]
649OpenBSD 4.9		2011-05-01 [OBD]
650Mac OS X 10.7		2011-07-20 [APL]
651OpenBSD 5.0		2011-11-01 [OBD]
652FreeBSD 9.0		2012-01-12 [FBD]
653NetBSD 5.1.2		2012-02-02 [NBD] (security/critical release)
654DragonFly 3.0.1		2012-02-21 [DFB]
655FreeBSD 8.3		2012-04-18 [FBD]
656OpenBSD 5.1		2012-05-01 [OBD]
657Mac OS X 10.8		2012-07-25 [APL]
658NetBSD 6.0		2012-10-17 [NBD]
659OpenBSD 5.2		2012-11-01 [OBD]
660DragonFly 3.2.1		2012-11-02 [DFB]
661NetBSD 5.2		2012-12-03 [NBD]
662NetBSD 6.0.1		2012-12-26 [NBD] (security/critical release)
663FreeBSD 9.1		2012-12-30 [FBD]
664DragonFly 3.4.1		2013-04-29 [DFB]
665OpenBSD 5.3		2013-05-01 [OBD]
666NetBSD 6.0.2		2013-05-18 [NBD] (security/critical release)
667NetBSD 6.1		2013-05-18 [NBD]
668FreeBSD 8.4		2013-06-07 [FBD]
669NetBSD 6.1.1		2013-08-22 [NBD]
670NetBSD 5.1.3		2013-09-29 [NBD]
671NetBSD 5.2.1		2013-09-29 [NBD]
672FreeBSD 9.2		2013-09-30 [FBD]
673NetBSD 6.0.3		2013-09-30 [NBD]
674NetBSD 6.1.2		2013-09-30 [NBD]
675Mac OS X 10.9		2013-10-22 [APL]
676OpenBSD 5.4		2013-11-01 [OBD]
677DragonFly 3.6.0 	2013-11-25 [DFB]
678FreeBSD 10.0		2014-01-20 [FBD]
679NetBSD 5.1.4		2014-01-25 [NBD]
680NetBSD 5.2.2		2014-01-25 [NBD]
681NetBSD 6.0.4		2014-01-25 [NBD]
682NetBSD 6.1.3		2014-01-25 [NBD]
683DragonFly 3.6.1 	2014-02-22 [DFB]
684DragonFly 3.6.2		2014-04-10 [DFB]
685NetBSD 6.0.5		2014-04-12 [NDB]
686NetBSD 6.1.4		2014-04-12 [NDB]
687OpenBSD 5.5		2014-05-01 [OBD]
688DragonFly 3.8.0		2014-06-04 [DFB]
689DragonFly 3.8.1		2014-06-16 [DFB]
690DragonFly 3.6.3		2014-06-17 [DFB]
691FreeBSD 9.3		2014-07-05 [FBD]
692DragonFly 3.8.2		2014-08-08 [DFB]
693NetBSD 6.1.5		2014-09-22 [NBD]
694Mac OS X 10.10		2014-10-16 [APL]
695OpenBSD 5.6		2014-11-01 [OBD]
696FreeBSD 10.1		2014-11-14 [FBD]
697DragonFly 4.0.1		2014-11-25 [DFB]
698DragonFly 4.0.2		2015-01-07 [DFB]
699DragonFly 4.0.3		2015-01-21 [DFB]
700DragonFly 4.0.4		2015-03-09 [DFB]
701DragonFly 4.0.5		2015-03-23 [DFB]
702OpenBSD 5.7		2015-05-01 [OBD]
703DragonFly 4.2.0		2015-06-29 [DFB]
704FreeBSD 10.2            2015-08-13 [FBD]
705NetBSD 7.0		2015-09-25 [NBD]
706OS X 10.11		2015-09-30 [APL]
707OpenBSD 5.8		2015-10-18 [OBD]
708DragonFly 4.4.1		2015-12-07 [DFB]
709OpenBSD 5.9		2016-03-29 [OBD]
710FreeBSD 10.3		2016-04-04 [FBD]
711NetBSD 7.0.1		2016-05-22 [NBD]
712DragonFly 4.6.0		2016-08-02 [DFB]
713OpenBSD 6.0		2016-09-01 [OBD]
714macOS 10.12		2016-09-20 [APL]
715FreeBSD 11.0		2016-10-10 [FBD]
716NetBSD 7.1		2017-03-11 [NBD]
717DragonFly 4.8.0		2017-03-27 [DFB]
718OpenBSD 6.1		2017-04-11 [OBD]
719FreeBSD 11.1		2017-07-26 [FBD]
720macOS 10.13		2017-09-25 [APL]
721FreeBSD 10.4		2017-10-03 [FBD]
722OpenBSD 6.2		2017-10-09 [OBD]
723DragonFly 5.0.0		2017-10-16 [DFB]
724
725Bibliography
726------------------------
727
728Leffler, Samuel J., Marshall Kirk McKusick, Michael J Karels and John
729Quarterman. The Design and Implementation of the 4.3BSD UNIX Operating
730System. Reading, Mass. Addison-Wesley, 1989. ISBN 0-201-06196-1
731
732Salus, Peter H. A quarter century of UNIX. Addison-Wesley Publishing
733Company, Inc., 1994. ISBN 0-201-54777-5
734
735McKusick, Marshall Kirk, Keith Bostic, Michael J Karels, and John
736Quarterman. The Design and Implementation of the 4.4BSD Operating
737System. Reading, Mass. Addison-Wesley, 1996. ISBN 0-201-54979-4
738
739McKusick, Marshall Kirk, George Neville-Neil. The Design and
740Implementation of the FreeBSD Operating System.
741Addison-Wesley Professional, Published: Aug 2, 2004. ISBN 0-201-70245-2
742
743McKusick, Marshall Kirk, George Neville-Neil, Robert Watson. The
744Design and Implementation of the FreeBSD Operating System, 2nd Edition.
745Pearson Education, Inc., 2014. ISBN 0-321-96897-2
746
747Doug McIlroy. Research Unix Reader.
748
749Michael G. Brown. The Role of BSD in the Development of Unix.
750Presented to the Tasmanian Unix Special Interest Group of the
751Australian Computer Society, Hobart, August 1993.
752
753Peter H. Salus. Unix at 25. Byte Magazine, October 1994.
754URL: http://www.byte.com/art/9410/sec8/art3.htm
755
756Andreas Klemm, Lars Köller. If you're going to San Francisco ...
757Die freien BSD-Varianten von Unix. c't April 1997, page 368ff.
758
759BSD Release Announcements collection.
760URL: https://www.FreeBSD.org/releases/
761
762BSD Hypertext Man Pages
763URL: https://www.FreeBSD.org/cgi/man.cgi
764
765UNIX history graphing project
766URL: http://minnie.tuhs.org/Unix_History/index.html
767
768UNIX history
769URL: http://www.levenez.com/unix/
770
771James Howard: The BSD Family Tree
772URL: http://ezine.daemonnews.org/200104/bsd_family.html
773("what are the differences between FreeBSD, NetBSD, and OpenBSD?")
774
775
776Acknowledgments
777---------------
778
779Josh Gilliam for suggestions, bug fixes, and finding very old
780original BSD announcements from Usenet or tapes.
781
782Steven M. Schultz for providing 2.8BSD, 2.10BSD, 2.11BSD manual pages.
783
784--
785Copyright (c) 1997-2012 Wolfram Schneider <wosch@FreeBSD.ORG>
786URL: http://svnweb.freebsd.org/base/head/share/misc/bsd-family-tree
787
788$FreeBSD$
789