xref: /freebsd/share/misc/bsd-family-tree (revision 65b71c48d226f3ef3eb1c4452dccc678a7d2ac96)
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 |     |       |      |      | |           OpenBSD 5.1                 |
262 |     |       |   Mac OS X  | `----.          |                       |
263 |     |       |     10.8    |       \         |                       |
264 |     |       |      |   NetBSD 6.0  |        |                       |
265 |     |       |      |      | | |    |    OpenBSD 5.2         DragonFly 3.2.1
266 |  FreeBSD    |      |      | | | NetBSD      |                       |
267 |    9.1      |      |      | | |   5.2       |                       |
268 |     |       |      |      | | |    |        |                       |
269 |     |       |      |      | | | NetBSD      |                       |
270 |     |       |      |      | | |  5.2.1      |                       |
271 |     |       |      |      | | |             |                       |
272 |     |       |      |      | |  \            |                       |
273 |     |       |      |      | |   NetBSD      |                       |
274 |     |       |      |      | |    6.0.1      |                       |
275 |     |       |      |      | |      |        |                       |
276 |     |       |      |      | |   NetBSD      |                       |
277 |     |       |      |      | |    6.0.2      |                       |
278 |     |       |      |      | |      |   OpenBSD 5.3          DragonFly 3.4.1
279 |     |       |      |      | |   NetBSD      |                       |
280 |     |       |      |      | |    6.0.3      |                       |
281 |     |       |      |      | |      |        |                       |
282 |     |       |      |      | |   NetBSD      |                       |
283 |     |       |      |      | |    6.0.4      |                       |
284 |     |       |      |      | |      |        |                       |
285 |     |       |      |      | |   NetBSD      |                       |
286 |     |       |      |      | |    6.0.5      |                       |
287 |     |       |      |      | |               |                       |
288 |     |       |      |      | |`-NetBSD 6.1   |                       |
289 |     |    FreeBSD   |      |       |         |                       |
290 |     |      8.4     |      |    NetBSD 6.1.1 |                       |
291 |     |              |      |       |         |                       |
292 |  FreeBSD           |      |    NetBSD 6.1.2 |                       |
293 |    9.2          Mac OS X  |       |         |                       |
294 |     |             10.9    |       |    OpenBSD 5.4                  |
295 |     `-----.        |      |       |         |               DragonFly 3.6.0
296 |            \       |      |       |         |                       |
297 *--FreeBSD    |      |      |    NetBSD 6.1.3 |                       |
298 |   10.0      |      |      |       |         |                       |
299 |     |       |      |      |       |         |               DragonFly 3.6.1
300 |     |       |      |      |       |         |                       |
301 |     |       |      |      |       |         |                       |
302 |     |       |      |      |       |         |               DragonFly 3.6.2
303 |     |       |      |      |    NetBSD 6.1.4 |                       |
304 |     |       |      |      |       |         |                       |
305 |     |       |      |      |       |    OpenBSD 5.5                  |
306 |     |       |      |      |       |         |                       |
307 |     |       |      |      |       |         |               DragonFly 3.8.0
308 |     |       |      |      |       |         |                       |
309 |     |       |      |      |       |         |                       |
310 |     |       |      |      |       |         |               DragonFly 3.8.1
311 |     |       |      |      |       |         |                       |
312 |     |       |      |      |       |         |                       |
313 |     |       |      |      |       |         |               DragonFly 3.6.3
314 |     |       |      |      |       |         |                       |
315 |     |    FreeBSD   |      |       |         |                       |
316 |     |      9.3     |      |       |         |                       |
317 |     |              |      |    NetBSD 6.1.5 |               DragonFly 3.8.2
318 |     |           Mac OS X  |                 |                       |
319 |     |             10.10   |                 |                       |
320 |     |              |      |            OpenBSD 5.6                  |
321 |  FreeBSD           |      |                 |                       |
322 |   10.1             |      |                 |               DragonFly 4.0.1
323 |                    |      |                 |                       |
324 |                    |      |                 |               DragonFly 4.0.2
325 |                    |      |                 |                       |
326 |                    |      |                 |               DragonFly 4.0.3
327 |                    |      |                 |                       |
328 |                    |      |                 |               DragonFly 4.0.4
329 |                    |      |                 |                       |
330 |                    |      |                 |               DragonFly 4.0.5
331 |                    |      |                 |                       |
332 |                    |      |            OpenBSD 5.7                  |
333 |                    |      |                 |               DragonFly 4.2.0
334 |                    |      |                 |                       |
335FreeBSD 11 -current   |  NetBSD -current  OpenBSD -current     DragonFly -current
336 |                    |      |                 |                       |
337 v                    v      v                 v                       v
338
339Time
340----------------
341
342Time tolerance +/- 6 months, depending on which book/article you read; if it
343was the announcement in Usenet or if it was available as tape.
344
345[44B] McKusick, Marshall Kirk, Keith Bostic, Michael J Karels,
346	and John Quarterman. The Design and Implementation of
347	the 4.4BSD Operating System.
348[APL] Apple website [http://www.apple.com/macosx/]
349[BSDI] Berkeley Software Design, Inc.
350[DFB] DragonFlyBSD Project, The.
351[DOC] README, COPYRIGHT on tape.
352[FBD] FreeBSD Project, The.
353[KB]  Keith Bostic. BSD2.10 available from Usenix. comp.unix.sources,
354	Volume 11, Info 4, April, 1987.
355[KKK] Mike Karels, Kirk McKusick, and Keith Bostic. tahoe announcement.
356	comp.bugs.4bsd.ucb-fixes, June 15, 1988.
357[KSJ] Michael J. Karels, Carl F. Smith, and William F. Jolitz.
358	Changes in the Kernel in 2.9BSD. Second Berkeley Software
359	Distribution UNIX Version 2.9, July, 1983.
360[NBD] NetBSD Project, The.
361[OBD] OpenBSD Project, The.
362[QCU] Salus, Peter H. A quarter century of UNIX.
363[SMS] Steven M. Schultz. 2.11BSD, UNIX for the PDP-11.
364[TUHS] The Unix Historical Society.  http://minnie.tuhs.org/Unix_History/.
365[USE] Usenet announcement.
366[WRS] Wind River Systems, Inc.
367[dmr] Dennis Ritchie, via E-Mail
368
369Multics                 1965
370UNIX                    Summer 1969
371				DEC PDP-7
372First   Edition         1971-11-03 [QCU]
373				DEC PDP-11/20, Assembler
374Second  Edition         1972-06-12 [QCU]
375				10 UNIX installations
376Third   Edition         1973-02-xx [QCU]
377				Pipes, 16 installations
378Fourth  Edition         1973-11-xx [QCU]
379				rewriting in C effected,
380                                above 30 installations
381Fifth   Edition         1974-06-xx [QCU]
382				above 50 installations
383Sixth   Edition         1975-05-xx [QCU]
384				port to DEC Vax
385Seventh Edition         1979-01-xx [QCU]
386				first portable UNIX
387Eighth  Edition         1985-02-xx [QCU]
388				VAX 11/750, VAX 11/780 [dmr]
389				descended from 4.1c BSD [dmr]
390				descended from 4.1 BSD [44B]
391			scooping-out and replacement of the character-device
392			and networking part by the streams mechanism
393
394Ninth   Edition         1986-09-xx [QCU]
395Tenth   Edition         1989-10-xx [QCU]
396
3971BSD                    late 1977
398			1978-03-09 [QCU]
399				PDP-11, Pascal, ex(1)
400				30 free copies of 1BSD sent out
401				35 tapes sold for 50 USD [QCU]
4022BSD                    mid 1978 [QCU] 1979-05-10 [TUHS]
403				75 2BSD tapes shipped
4042.79BSD			1980-04-xx [TUHS]
4052.8BSD			1981-07-xx [KSJ]
406
4072.8.1BSD		1982-01-xx [QCU]
408				set of performance improvements
4092.9BSD			1983-07-xx [KSJ]
4102.9.1BSD                1983-11-xx [TUHS]
4112.9BSD-Seismo		1985-08-xx [SMS]
4122.10BSD			1987-04-xx [KKK]
4132.10.1BSD		1989-01-xx [SMS]
4142.11BSD			1992-02-xx [SMS]
4152.11BSD rev #430	1999-12-13 [SMS]
416
41732V			1978-1[01]-xx [QCU]
4183BSD                    late 1979 [QCU] March 1980 [TUHS]
419				virtual memory, page replacement,
420                        	demand paging
4214.0BSD                  1980-10-xx
4224.1BSD                  1981-07-08 [DOC]
4234.1aBSD                 1982-04-xx
424				alpha release, 100 sites, networking [44B]
4254.1bBSD				internal release, fast filesystem [44B]
4264.1cBSD                 late 1982
427				beta release, IPC [44B]
4284.2BSD                  1983-09-xx [QCU]
429                        1983-08-03 [DOC]
4304.3BSD                  1986-06-xx [QCU]
431			1986-04-05 [KB], [DOC]
4324.3BSD Tahoe            1988-06-15 [QCU], [DOC]
4334.3BSD NET/1            1988-11-xx [QCU]
434                        1989-01-01 [DOC]
4354.3BSD Reno             1990-06-29 [QCU], [DOC]
4364.3BSD NET/2            1991-06-28 [QCU], [DOC]
437
438BSD/386 ALPHA		1991-12-xx [BSDI]
439				first code released to people outside BSDI
440386BSD 0.0              1992-02-xx [DOC]
441BSD/386 0.3.1	        1992-04-xx [BSDI] first ext. beta; B customers
442BSD/386 0.3.3		1992-06-xx [BSDI] first CDROM version
443386BSD 0.1              1992-07-28 [DOC]
4444.4BSD Alpha            1992-07-07
445BSD/386 0.9.3		1992-10-xx [BSDI]
446				first external gamma; G customers
447BSD/386 0.9.4		1992-12-xx [BSDI]
448				would have been 1.0 except for request
449				for preliminary injunction
450BSD/386 1.0 		1993-03-xx [BSDI]
451				injunction denied; first official release
452NetBSD 0.8              1993-04-20 [NBD]
4534.4BSD                  1993-06-01 [USE]
454NetBSD 0.9              1993-08-23 [NBD]
455FreeBSD 1.0		1993-11-01 [FBD]
456FreeBSD 1.0.2		1993-11-14 [FBD]
457				supersedes 1.0 13 days after release.
458BSD/386 1.1		1994-02-xx [BSDI]
4594.4BSD Lite             1994-03-01 [USE]
460FreeBSD 1.1		1994-05-07 [FBD]
461FreeBSD 1.1.5		1994-06-30 [FBD]
462FreeBSD 1.1.5.1		1994-07-05 [FBD]
463				supersedes 1.1.5 5 days after release.
464NetBSD 1.0              1994-10-26 [NBD]
465386BSD 1.0              1994-11-12 [USE]
466FreeBSD 2.0		1994-11-23 [FBD]
467BSD/OS 2.0		1995-01-xx [BSDI] 4.4 lite based
468FreeBSD 2.0.5		1995-06-10 [FBD]
469BSD/OS 2.0.1		1995-06-xx [BSDI]
4704.4BSD Lite Release 2	1995-06-xx [44B]
471				the true final distribution from the CSRG
472FreeBSD 2.1.0		1995-11-19 [FBD]
473NetBSD 1.1              1995-11-26 [NBD]
474BSD/OS 2.1		1996-01-xx [BSDI]
475FreeBSD 2.1.5		1996-07-14 [FBD]
476NetBSD 1.2              1996-10-04 [NBD]
477OpenBSD 2.0             1996-10-18 [OBD]
478FreeBSD 2.1.6		1996-11-16 [FBD]
479FreeBSD 2.1.6.1		1996-11-25 [FBD] (sendmail security release)
480Rhapsody		1997-xx-xx
481FreeBSD 2.1.7		1997-02-20 [FBD]
482BSD/OS 3.0		1997-02-xx [BSDI] 4.4 lite2 based
483FreeBSD 2.2.0		1997-03-16 [FBD]
484FreeBSD 2.2.1		1997-03-25 [FBD]
485FreeBSD 2.2.2		1997-05-16 [FBD]
486NetBSD 1.2.1            1997-05-20 [NBD] (patch release)
487OpenBSD 2.1             1997-06-01 [OBD]
488FreeBSD 2.2.5		1997-10-22 [FBD]
489OpenBSD 2.2             1997-12-01 [OBD]
490NetBSD 1.3              1998-01-04 [NBD]
491FreeBSD 2.2.6		1998-03-25 [FBD]
492NetBSD 1.3.1            1998-03-09 [NBD] (patch release)
493BSD/OS 3.1		1998-03-xx [BSDI]
494OpenBSD 2.3             1998-05-19 [OBD]
495NetBSD 1.3.2            1998-05-29 [NBD] (patch release)
496FreeBSD 2.2.7		1998-07-22 [FBD]
497BSD/OS 4.0		1998-08-xx [BSDI]
498				2-lock MP support, ELF executables
499FreeBSD 3.0		1998-10-16 [FBD]
500				FreeBSD-3.0 is a snapshot from -current,
501				while 3.1 and 3.2 are from 3.x-stable which
502				was branched quite some time after 3.0-release
503FreeBSD 2.2.8           1998-11-29 [FBD]
504OpenBSD 2.4             1998-12-01 [OBD]
505NetBSD 1.3.3            1998-12-23 [NBD] (patch release)
506FreeBSD 3.1		1999-02-15 [FBD]
507BSD/OS 4.0.1		1999-03-xx [BSDI]
508NetBSD 1.4              1999-05-12 [NBD]
509FreeBSD 3.2             1999-05-17 [FBD]
510OpenBSD 2.5             1999-05-19 [OBD]
511NetBSD 1.4.1            1999-08-26 [NBD] (patch release)
512FreeBSD 3.3             1999-09-17 [FBD]
513OpenBSD 2.6             1999-12-01 [OBD]
514FreeBSD 3.4             1999-12-20 [FBD]
515BSD/OS 4.1		1999-12-xx [BSDI]
516FreeBSD 4.0             2000-03-13 [FBD]
517NetBSD 1.4.2            2000-03-19 [NBD] (patch release)
518OpenBSD 2.7             2000-06-15 [OBD]
519FreeBSD 3.5		2000-06-24 [FBD]
520FreeBSD 4.1		2000-07-27 [FBD]
521FreeBSD 3.5.1		2000-07-28 [FBD]
522FreeBSD 4.1.1		2000-09-25 [FBD] (a network-only patch release)
523FreeBSD 4.2  		2000-11-21 [FBD]
524NetBSD 1.4.3		2000-11-25 [NBD] (patch release)
525BSD/OS 4.2		2000-11-29 [BSDI]
526OpenBSD 2.8		2000-12-01 [OBD]
527NetBSD 1.5              2000-12-06 [NBD]
528Mac OS X 10.0           2001-03-24 [APL]
529FreeBSD 4.3  		2001-04-20 [FBD]
530OpenBSD 2.9  		2001-06-01 [OBD]
531NetBSD 1.5.1		2001-07-11 [NBD] (patch release)
532NetBSD 1.5.2		2001-09-13 [NBD] (patch release)
533FreeBSD 4.4  		2001-09-18 [FBD]
534Mac OS X 10.1		2001-09-29 [APL]
535OpenBSD 3.0		2001-12-01 [OBD]
536FreeBSD 4.5  		2002-01-29 [FBD]
537BSD/OS 4.3		2002-03-14 [WRS]
538OpenBSD 3.1		2002-05-19 [OBD]
539FreeBSD 4.6  		2002-06-15 [FBD]
540NetBSD 1.5.3		2002-07-22 [NBD] (patch release)
541FreeBSD 4.6.2		2002-08-15 [FBD] (patch release)
542Mac OS X 10.2		2002-08-23 [APL]
543NetBSD 1.6		2002-09-14 [NBD]
544FreeBSD 4.7		2002-10-08 [FBD]
545OpenBSD 3.2		2002-11-01 [OBD]
546FreeBSD 5.0		2003-01-17 [FBD]
547				FreeBSD 5.0 is a separate branch off of
548				-current, similar to 3.0.
549FreeBSD 4.8		2003-04-03 [FBD]
550NetBSD 1.6.1		2003-04-21 [NBD] (patch release)
551OpenBSD 3.3		2003-05-01 [OBD]
552BSD/OS 5.0		2003-05-?? [WRS]
553FreeBSD 5.1		2003-06-09 [FBD]
554Mac OS X 10.3		2003-10-24 [APL]
555FreeBSD 4.9		2003-10-28 [FBD]
556BSD/OS 5.1 ISE		2003-10-?? [WRS] (final version)
557OpenBSD 3.4		2003-11-01 [OBD]
558FreeBSD 5.2		2004-01-12 [FBD]
559FreeBSD 5.2.1		2004-02-22 [FBD] (patch release)
560NetBSD 1.6.2		2004-03-01 [NBD] (patch release)
561OpenBSD 3.5		2004-04-01 [OBD]
562FreeBSD 4.10		2004-05-27 [FBD]
563DragonFly 1.0		2004-07-12 [DFB]
564OpenBSD 3.6		2004-10-29 [OBD]
565FreeBSD 5.3		2004-11-06 [FBD]
566NetBSD 2.0		2004-12-09 [NBD]
567FreeBSD 4.11		2005-01-25 [FBD]
568DragonFly 1.2.0		2005-04-08 [DFB]
569NetBSD 2.0.2		2005-04-14 [NBD] (security/critical release)
570Mac OS X 10.4		2005-04-29 [APL]
571FreeBSD 5.4		2005-05-09 [FBD]
572OpenBSD 3.7		2005-05-19 [OBD]
573NetBSD 2.0.3		2005-10-31 [NBD] (security/critical release)
574OpenBSD 3.8		2005-11-01 [OBD]
575FreeBSD 6.0		2005-11-01 [FBD]
576NetBSD 2.1		2005-11-02 [NBD]
577NetBSD 3.0		2005-12-23 [NBD]
578DragonFly 1.4.0		2006-01-08 [DFB]
579FreeBSD 2.2.9		2006-04-01 [FBD]
580OpenBSD 3.9		2006-05-01 [OBD]
581FreeBSD 6.1		2006-05-08 [FBD]
582FreeBSD 5.5		2006-05-25 [FBD]
583NetBSD 3.0.1		2006-07-24 [NBD] (security/critical release)
584DragonFly 1.6.0		2006-07-24 [DFB]
585OpenBSD 4.0		2006-11-01 [OBD]
586NetBSD 3.0.2		2006-11-04 [NBD] (security/critical release)
587NetBSD 3.1		2006-11-04 [NBD]
588FreeBSD 6.2		2007-01-15 [FBD]
589DragonFly 1.8.0		2007-01-30 [DFB]
590OpenBSD 4.1		2007-05-01 [OBD]
591DragonFly 1.10.0	2007-08-06 [DFB]
592Mac OS X 10.5		2007-10-26 [APL]
593OpenBSD 4.2		2007-11-01 [OBD]
594NetBSD 4.0		2007-12-19 [NBD]
595FreeBSD 6.3		2008-01-18 [FBD]
596DragonFly 1.12.0	2008-02-26 [DFB]
597FreeBSD 7.0		2008-02-27 [FBD]
598OpenBSD 4.3		2008-05-01 [OBD]
599DragonFly 2.0.0		2008-07-21 [DFB]
600OpenBSD 4.4		2008-11-01 [OBD]
601FreeBSD 6.4		2008-11-28 [FBD]
602FreeBSD 7.1		2009-01-04 [FBD]
603DragonFly 2.2.0		2009-02-17 [DFB]
604NetBSD 5.0		2009-04-29 [NBD]
605OpenBSD 4.5		2009-05-01 [OBD]
606FreeBSD 7.2		2009-05-04 [FBD]
607Mac OS X 10.6		2009-06-08 [APL]
608NetBSD 5.0.1		2009-08-02 [NBD] (security/critical release)
609DragonFly 2.4.0		2009-09-16 [DFB]
610OpenBSD 4.6		2009-10-18 [OBD]
611FreeBSD 8.0		2009-11-26 [FBD]
612NetBSD 5.0.2		2010-02-12 [NBD] (security/critical release)
613FreeBSD 7.3		2010-03-23 [FBD]
614DragonFly 2.6.0		2010-03-28 [DFB]
615OpenBSD 4.7		2010-05-19 [OBD]
616FreeBSD 8.1		2010-07-24 [FBD]
617DragonFly 2.8.2		2010-10-30 [DFB]
618OpenBSD 4.8		2010-11-01 [OBD]
619NetBSD 5.1		2010-11-19 [NBD]
620FreeBSD 7.4		2011-02-24 [FBD]
621FreeBSD 8.2		2011-02-24 [FBD]
622DragonFly 2.10.1	2011-04-26 [DFB]
623OpenBSD 4.9		2011-05-01 [OBD]
624Mac OS X 10.7		2011-07-20 [APL]
625OpenBSD 5.0		2011-11-01 [OBD]
626FreeBSD 9.0		2012-01-12 [FBD]
627NetBSD 5.1.2		2012-02-02 [NBD] (security/critical release)
628DragonFly 3.0.1		2012-02-21 [DFB]
629FreeBSD 8.3		2012-04-18 [FBD]
630OpenBSD 5.1		2012-05-01 [OBD]
631Mac OS X 10.8		2012-07-25 [APL]
632NetBSD 6.0		2012-10-17 [NBD]
633OpenBSD 5.2		2012-11-01 [OBD]
634DragonFly 3.2.1		2012-11-02 [DFB]
635NetBSD 5.2		2012-12-03 [NBD]
636NetBSD 6.0.1		2012-12-26 [NBD] (security/critical release)
637FreeBSD 9.1		2012-12-30 [FBD]
638DragonFly 3.4.1		2013-04-29 [DFB]
639OpenBSD 5.3		2013-05-01 [OBD]
640NetBSD 6.0.2		2013-05-18 [NBD] (security/critical release)
641NetBSD 6.1		2013-05-18 [NBD]
642FreeBSD 8.4		2013-06-07 [FBD]
643NetBSD 6.1.1		2013-08-22 [NBD]
644NetBSD 5.1.3		2013-09-29 [NBD]
645NetBSD 5.2.1		2013-09-29 [NBD]
646FreeBSD 9.2		2013-09-30 [FBD]
647NetBSD 6.0.3		2013-09-30 [NBD]
648NetBSD 6.1.2		2013-09-30 [NBD]
649Mac OS X 10.9		2013-10-22 [APL]
650OpenBSD 5.4		2013-11-01 [OBD]
651DragonFly 3.6.0 	2013-11-25 [DFB]
652FreeBSD 10.0		2014-01-20 [FBD]
653NetBSD 6.0.4		2014-01-27 [NBD]
654NetBSD 6.1.3		2014-01-27 [NBD]
655DragonFly 3.6.1 	2014-02-22 [DFB]
656DragonFly 3.6.2		2014-04-10 [DFB]
657NetBSD 6.0.5		2014-04-19 [NDB]
658NetBSD 6.1.4		2014-04-19 [NDB]
659OpenBSD 5.5		2014-05-01 [OBD]
660DragonFly 3.8.0		2014-06-04 [DFB]
661DragonFly 3.8.1		2014-06-16 [DFB]
662DragonFly 3.6.3		2014-06-17 [DFB]
663FreeBSD 9.3		2014-07-05 [FBD]
664DragonFly 3.8.2		2014-08-08 [DFB]
665NetBSD 6.1.5		2014-09-22 [NBD]
666Mac OS X 10.10		2014-10-16 [APL]
667OpenBSD 5.6		2014-11-01 [OBD]
668FreeBSD 10.1		2014-11-14 [FBD]
669DragonFly 4.0.1		2014-11-25 [DFB]
670DragonFly 4.0.2		2015-01-07 [DFB]
671DragonFly 4.0.3		2015-01-21 [DFB]
672DragonFly 4.0.4		2015-03-09 [DFB]
673DragonFly 4.0.5		2015-03-23 [DFB]
674OpenBSD 5.7		2015-05-01 [OBD]
675DragonFly 4.2.0		2015-06-29 [DFB]
676
677Bibliography
678------------------------
679
680Leffler, Samuel J., Marshall Kirk McKusick, Michael J Karels and John
681Quarterman. The Design and Implementation of the 4.3BSD UNIX Operating
682System. Reading, Mass. Addison-Wesley, 1989. ISBN 0-201-06196-1
683
684Salus, Peter H. A quarter century of UNIX. Addison-Wesley Publishing
685Company, Inc., 1994. ISBN 0-201-54777-5
686
687McKusick, Marshall Kirk, Keith Bostic, Michael J Karels, and John
688Quarterman. The Design and Implementation of the 4.4BSD Operating
689System. Reading, Mass. Addison-Wesley, 1996. ISBN 0-201-54979-4
690
691McKusick, Marshall Kirk, George Neville-Neil. The Design and
692Implementation of the FreeBSD Operating System.
693Addison-Wesley Professional, Published: Aug 2, 2004. ISBN 0-201-70245-2
694
695McKusick, Marshall Kirk, George Neville-Neil, Robert Watson. The
696Design and Implementation of the FreeBSD Operating System, 2nd Edition.
697Pearson Education, Inc., 2014. ISBN 0-321-96897-2
698
699Doug McIlroy. Research Unix Reader.
700
701Michael G. Brown. The Role of BSD in the Development of Unix.
702Presented to the Tasmanian Unix Special Interest Group of the
703Australian Computer Society, Hobart, August 1993.
704
705Peter H. Salus. Unix at 25. Byte Magazine, October 1994.
706URL: http://www.byte.com/art/9410/sec8/art3.htm
707
708Andreas Klemm, Lars Köller. If you're going to San Francisco ...
709Die freien BSD-Varianten von Unix. c't April 1997, page 368ff.
710
711BSD Release Announcements collection.
712URL: http://www.FreeBSD.org/releases/
713
714BSD Hypertext Man Pages
715URL: http://www.FreeBSD.org/cgi/man.cgi
716
717UNIX history graphing project
718URL: http://minnie.tuhs.org/Unix_History/index.html
719
720UNIX history
721URL: http://www.levenez.com/unix/
722
723James Howard: The BSD Family Tree
724URL: http://ezine.daemonnews.org/200104/bsd_family.html
725("what are the differences between FreeBSD, NetBSD, and OpenBSD?")
726
727
728Acknowledgments
729---------------
730
731Josh Gilliam for suggestions, bug fixes, and finding very old
732original BSD announcements from Usenet or tapes.
733
734Steven M. Schultz for providing 2.8BSD, 2.10BSD, 2.11BSD manual pages.
735
736--
737Copyright (c) 1997-2012 Wolfram Schneider <wosch@FreeBSD.ORG>
738URL: http://svnweb.freebsd.org/base/head/share/misc/bsd-family-tree
739
740$FreeBSD$
741