xref: /freebsd/share/misc/bsd-family-tree (revision ddd5b8e9b4d8957fce018c520657cdfa4ecffad3)
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 |         v         | |     |    |            |             |
114 |     FreeBSD 2.2.8 | |     |    |            |             |
115 |                   | |     |    |        OpenBSD 2.4       |
116FreeBSD 3.0 <--------* |     |    v            |             |
117 |                     |     | NetBSD 1.3.3    |             |
118 *---FreeBSD 3.1       |     |                 |             |
119 |       |             |     |                 |           BSD/OS 4.0.1
120 |   FreeBSD 3.2----*  |  NetBSD 1.4       OpenBSD 2.5       |
121 |       |          |  |  |  |    |            |             |
122 |       |          |  |  |  |    |            |             |
123 |       |          |  |  |  |    |            |             |
124 |   FreeBSD 3.3    |  |  |  | NetBSD 1.4.1    |             |
125 |       |          |  |  |  |    |        OpenBSD 2.6       |
126 |   FreeBSD 3.4    |  |  |  |    |            |             |
127 |           |      |  |  |  |    |            |           BSD/OS 4.1
128FreeBSD 4.0  |      |  |  |  | NetBSD 1.4.2    |             |
129 |           |      |  |  |  |    |            |             |
130 |           |      |  |  |  |    |            |             |
131 |   FreeBSD 3.5    |  |  |  |    |        OpenBSD 2.7       |
132 |           |      |  |  |  |    |            |             |
133 |   FreeBSD 3.5.1  |  |  |  |    |            |             |
134 |                  |  |  |  |    |            |             |
135 *---FreeBSD 4.1    |  |  |  |    |            |             |
136 |      |           |  | (?) |    |            |             |
137 |   FreeBSD 4.1.1  |  |  /  |    |            |             |
138 |      |           |  | /   |    |            |             |
139 |   FreeBSD 4.2   Darwin/   | NetBSD 1.4.3    |             |
140 |      |         Mac OS X   |             OpenBSD 2.8     BSD/OS 4.2
141 |      |             |      |                 |             |
142 |      |             |      |                 |             |
143 |      |           10.0  NetBSD 1.5           |             |
144 |   FreeBSD 4.3      |      |    |            |             |
145 |      |             |      |    |        OpenBSD 2.9       |
146 |      |             |      | NetBSD 1.5.1    |             |
147 |      |             |      |    |            |             |
148 |   FreeBSD 4.4-.    |      | NetBSD 1.5.2    |             |
149 |      |        | Mac OS X  |    |            |             |
150 |      |        |   10.1    |    |        OpenBSD 3.0       |
151 |   FreeBSD 4.5 |    |      |    |            |             |
152 |      |         \   |      |    |            |           BSD/OS 4.3
153 |   FreeBSD 4.6   \  |      |    |        OpenBSD 3.1       |
154 |      |           \ |      | NetBSD 1.5.3    |             |
155 |   FreeBSD 4.6.2 Mac OS X  |                 |             |
156 |      |            10.2    |                 |             |
157 |   FreeBSD 4.7      |      |                 |             |
158 |      |             |   NetBSD 1.6       OpenBSD 3.2       |
159 |   FreeBSD 4.8      |      |    |            |             |
160 |      |             |      | NetBSD 1.6.1    |             |
161 |      |--------.    |      |    |        OpenBSD 3.3     BSD/OS 5.0
162 |      |         \   |      |    |            |             |
163 |   FreeBSD 4.9   |  |      |    |        OpenBSD 3.4     BSD/OS 5.1 ISE
164 |      |          |  |      |    |            |
165 |      |          |  |      | NetBSD 1.6.2    |
166 |      |          |  |      |    |            |
167 |      |          |  |      |    |        OpenBSD 3.5
168 |      |          |  |      |    v            |
169 |   FreeBSD 4.10  |  |      |                 |
170 |      |          |  |      |                 |
171 |   FreeBSD 4.11  |  |      |                 |
172 |                 |  |      |                 |
173 |                  `-|------|-----------------|---------------------.
174 |                    |      |                 |                      \
175FreeBSD 5.0           |      |                 |                       |
176 |                    |      |                 |                       |
177FreeBSD 5.1           |      |                 |                 DragonFly 1.0
178 |          \         |      |                 |                       |
179 |           ----- Mac OS X  |                 |                       |
180 |                   10.3    |                 |                       |
181FreeBSD 5.2           |      |                 |                       |
182 |      |             |      |                 |                       |
183 |   FreeBSD 5.2.1    |      |                 |                       |
184 |                    |      |                 |                       |
185 *-------FreeBSD 5.3  |      |                 |                       |
186 |           |        |      |             OpenBSD 3.6                 |
187 |           |        |   NetBSD 2.0           |                       |
188 |           |        |      | |  |            |                DragonFly 1.2.0
189 |           |     Mac OS X  | | NetBSD 2.0.2  |                       |
190 |           |       10.4    | |  |            |                       |
191 |       FreeBSD 5.4  |      | |  |            |                       |
192 |           |        |      | |  |        OpenBSD 3.7                 |
193 |           |        |      | | NetBSD 2.0.3  |                       |
194 |           |        |      | |  |            |                       |
195 *--FreeBSD  |        |      | |  v        OpenBSD 3.8                 |
196 |    6.0    |        |      | |               |                       |
197 |     |     |        |      |  \              |                       |
198 |     |     |        |      | NetBSD 2.1      |                       |
199 |     |     |        |      |                 |                       |
200 |     |     |        |   NetBSD 3.0           |                       |
201 |     |     |        |      | |  |            |                DragonFly 1.4.0
202 |     |     |        |      | |  |        OpenBSD 3.9                 |
203 |  FreeBSD  |        |      | |  |            |                       |
204 |    6.1    |        |      | |  |            |                       |
205 |     |  FreeBSD 5.5 |      | |  |            |                       |
206 |     |              |      | | NetBSD 3.0.1  |                DragonFly 1.6.0
207 |     |              |      | |  |            |                       |
208 |     |              |      | |  |        OpenBSD 4.0                 |
209 |     |              |      | | NetBSD 3.0.2  |                       |
210 |     |              |      | NetBSD 3.1      |                       |
211 | FreeBSD 6.2        |      |                 |                       |
212 |     |              |      |                 |                DragonFly 1.8.0
213 |     |              |      |             OpenBSD 4.1                 |
214 |     |              |      |                 |                DragonFly 1.10.0
215 |     |           Mac OS X  |                 |                       |
216 |     |             10.5    |                 |                       |
217 |     |              |      |             OpenBSD 4.2                 |
218 |     |              |   NetBSD 4.0           |                       |
219 | FreeBSD 6.3        |      |                 |                       |
220 |            \       |      |                 |                       |
221 *--FreeBSD    |      |      |                 |                DragonFly 1.12.0
222 |    7.0      |      |      |                 |                       |
223 |     |       |      |      |             OpenBSD 4.3                 |
224 |     |       |      |      |                 |                DragonFly 2.0.0
225 |     |    FreeBSD   |      |             OpenBSD 4.4                 |
226 |     |      6.4     |      |                 |                       |
227 |     |              |      |                 |                       |
228 |  FreeBSD 7.1       |      |                 |                       |
229 |     |              |      |                 |                DragonFly 2.2.0
230 |  FreeBSD 7.2       |   NetBSD 5.0       OpenBSD 4.5                 |
231 |             \      |      |    |            |                       |
232 |              |  Mac OS X  |    |            |                       |
233 |              |    10.6    |    |            |                       |
234 |              |     |      |    |            |                DragonFly 2.4.0
235 |              |     |      |    |        OpenBSD 4.6                 |
236 |              |     |      |    |            |                       |
237 *--FreeBSD     |     |      |    |            |                       |
238 |    8.0       |     |      |    |            |                       |
239 |     |     FreeBSD  |      |    |            |                       |
240 |     |       7.3    |      |    |            |                DragonFly 2.6.0
241 |     |        |     |      |    |        OpenBSD 4.7                 |
242 |  FreeBSD     |     |      |    |            |                       |
243 |    8.1       |     |      |    |            |                       |
244 |     |        |     |      |    |            |                DragonFly 2.8.2
245 |     |        |     |      |    |        OpenBSD 4.8                 |
246 |     |        |     |      | NetBSD 5.1      |                       |
247 |  FreeBSD  FreeBSD  |      |                 |                       |
248 |    8.2      7.4    |      |                 |               DragonFly 2.10.1
249 |     |              |      |             OpenBSD 4.9                 |
250 |     `-----.     Mac OS X  |                 |                       |
251 |            \      10.7    |                 |                       |
252 |             |      |      |             OpenBSD 5.0                 |
253 *--FreeBSD    |      |      |                 |                       |
254 |    9.0      |      |      |                 |               DragonFly 3.0.1
255 |     |    FreeBSD   |      |                 |                       |
256 |     |      8.3     |      |             OpenBSD 5.1                 |
257 |     |           Mac OS X  |                 |                       |
258 |     |             10.8    |                 |                       |
259 |     |              |   NetBSD 6.0           |                       |
260 |     |              |      |             OpenBSD 5.2         DragonFly 3.2.1
261 |  FreeBSD           |      |                 |                       |
262 |    9.1             |      |                 |                       |
263 |                    |      |                 |                       |
264FreeBSD 10 -current   |  NetBSD -current  OpenBSD -current             |
265 |                    |      |                 |                       |
266 v                    v      v                 v                       v
267
268Time
269----------------
270
271Time tolerance +/- 6 months, depending on which book/article you read; if it
272was the announcement in Usenet or if it was available as tape.
273
274[44B] McKusick, Marshall Kirk, Keith Bostic, Michael J Karels,
275	and John Quarterman. The Design and Implementation of
276	the 4.4BSD Operating System.
277[APL] Apple website [http://www.apple.com/macosx/]
278[BSDI] Berkeley Software Design, Inc.
279[DFB] DragonFlyBSD Project, The.
280[DOC] README, COPYRIGHT on tape.
281[FBD] FreeBSD Project, The.
282[KB]  Keith Bostic. BSD2.10 available from Usenix. comp.unix.sources,
283	Volume 11, Info 4, April, 1987.
284[KKK] Mike Karels, Kirk McKusick, and Keith Bostic. tahoe announcement.
285	comp.bugs.4bsd.ucb-fixes, June 15, 1988.
286[KSJ] Michael J. Karels, Carl F. Smith, and William F. Jolitz.
287	Changes in the Kernel in 2.9BSD. Second Berkeley Software
288	Distribution UNIX Version 2.9, July, 1983.
289[NBD] NetBSD Project, The.
290[OBD] OpenBSD Project, The.
291[QCU] Salus, Peter H. A quarter century of UNIX.
292[SMS] Steven M. Schultz. 2.11BSD, UNIX for the PDP-11.
293[TUHS] The Unix Historical Society.  http://minnie.tuhs.org/Unix_History/.
294[USE] Usenet announcement.
295[WRS] Wind River Systems, Inc.
296[dmr] Dennis Ritchie, via E-Mail
297
298Multics                 1965
299UNIX                    Summer 1969
300				DEC PDP-7
301First   Edition         1971-11-03 [QCU]
302				DEC PDP-11/20, Assembler
303Second  Edition         1972-06-12 [QCU]
304				10 UNIX installations
305Third   Edition         1973-02-xx [QCU]
306				Pipes, 16 installations
307Fourth  Edition         1973-11-xx [QCU]
308				rewriting in C effected,
309                                above 30 installations
310Fifth   Edition         1974-06-xx [QCU]
311				above 50 installations
312Sixth   Edition         1975-05-xx [QCU]
313				port to DEC Vax
314Seventh Edition         1979-01-xx [QCU]
315				first portable UNIX
316Eighth  Edition         1985-02-xx [QCU]
317				VAX 11/750, VAX 11/780 [dmr]
318				descended from 4.1c BSD [dmr]
319				descended from 4.1 BSD [44B]
320			scooping-out and replacement of the character-device
321			and networking part by the streams mechanism
322
323Ninth   Edition         1986-09-xx [QCU]
324Tenth   Edition         1989-10-xx [QCU]
325
3261BSD                    late 1977
327			1978-03-09 [QCU]
328				PDP-11, Pascal, ex(1)
329				30 free copies of 1BSD sent out
330				35 tapes sold for 50 USD [QCU]
3312BSD                    mid 1978 [QCU] 1979-05-10 [TUHS]
332				75 2BSD tapes shipped
3332.79BSD			1980-04-xx [TUHS]
3342.8BSD			1981-07-xx [KSJ]
335
3362.8.1BSD		1982-01-xx [QCU]
337				set of performance improvements
3382.9BSD			1983-07-xx [KSJ]
3392.9.1BSD                1983-11-xx [TUHS]
3402.9BSD-Seismo		1985-08-xx [SMS]
3412.10BSD			1987-04-xx [KKK]
3422.10.1BSD		1989-01-xx [SMS]
3432.11BSD			1992-02-xx [SMS]
3442.11BSD rev #430	1999-12-13 [SMS]
345
34632V			1978-1[01]-xx [QCU]
3473BSD                    late 1979 [QCU] March 1980 [TUHS]
348				virtual memory, page replacement,
349                        	demand paging
3504.0BSD                  1980-10-xx
3514.1BSD                  1981-07-08 [DOC]
3524.1aBSD                 1982-04-xx
353				alpha release, 100 sites, networking [44B]
3544.1bBSD				internal release, fast filesystem [44B]
3554.1cBSD                 late 1982
356				beta release, IPC [44B]
3574.2BSD                  1983-09-xx [QCU]
358                        1983-08-03 [DOC]
3594.3BSD                  1986-06-xx [QCU]
360			1986-04-05 [KB], [DOC]
3614.3BSD Tahoe            1988-06-15 [QCU], [DOC]
3624.3BSD NET/1            1988-11-xx [QCU]
363                        1989-01-01 [DOC]
3644.3BSD Reno             1990-06-29 [QCU], [DOC]
3654.3BSD NET/2            1991-06-28 [QCU], [DOC]
366
367BSD/386 ALPHA		1991-12-xx [BSDI]
368				first code released to people outside BSDI
369386BSD 0.0              1992-02-xx [DOC]
370BSD/386 0.3.1	        1992-04-xx [BSDI] first ext. beta; B customers
371BSD/386 0.3.3		1992-06-xx [BSDI] first CDROM version
372386BSD 0.1              1992-07-28 [DOC]
3734.4BSD Alpha            1992-07-07
374BSD/386 0.9.3		1992-10-xx [BSDI]
375				first external gamma; G customers
376BSD/386 0.9.4		1992-12-xx [BSDI]
377				would have been 1.0 except for request
378				for preliminary injunction
379BSD/386 1.0 		1993-03-xx [BSDI]
380				injunction denied; first official release
381NetBSD 0.8              1993-04-20 [NBD]
3824.4BSD                  1993-06-01 [USE]
383NetBSD 0.9              1993-08-23 [NBD]
384FreeBSD 1.0		1993-11-01 [FBD]
385FreeBSD 1.0.2		1993-11-14 [FBD]
386				supersedes 1.0 13 days after release.
387BSD/386 1.1		1994-02-xx [BSDI]
3884.4BSD Lite             1994-03-01 [USE]
389FreeBSD 1.1		1994-05-07 [FBD]
390FreeBSD 1.1.5		1994-06-30 [FBD]
391FreeBSD 1.1.5.1		1994-07-05 [FBD]
392				supersedes 1.1.5 5 days after release.
393NetBSD 1.0              1994-10-26 [NBD]
394386BSD 1.0              1994-11-12 [USE]
395FreeBSD 2.0		1994-11-23 [FBD]
396BSD/OS 2.0		1995-01-xx [BSDI] 4.4 lite based
397FreeBSD 2.0.5		1995-06-10 [FBD]
398BSD/OS 2.0.1		1995-06-xx [BSDI]
3994.4BSD Lite Release 2	1995-06-xx [44B]
400				the true final distribution from the CSRG
401FreeBSD 2.1.0		1995-11-19 [FBD]
402NetBSD 1.1              1995-11-26 [NBD]
403BSD/OS 2.1		1996-01-xx [BSDI]
404FreeBSD 2.1.5		1996-07-14 [FBD]
405NetBSD 1.2              1996-10-04 [NBD]
406OpenBSD 2.0             1996-10-18 [OBD]
407FreeBSD 2.1.6		1996-11-16 [FBD]
408FreeBSD 2.1.6.1		1996-11-25 [FBD] (sendmail security release)
409Rhapsody		1997-xx-xx
410FreeBSD 2.1.7		1997-02-20 [FBD]
411BSD/OS 3.0		1997-02-xx [BSDI] 4.4 lite2 based
412FreeBSD 2.2.0		1997-03-16 [FBD]
413FreeBSD 2.2.1		1997-03-25 [FBD]
414FreeBSD 2.2.2		1997-05-16 [FBD]
415NetBSD 1.2.1            1997-05-20 [NBD] (patch release)
416OpenBSD 2.1             1997-06-01 [OBD]
417FreeBSD 2.2.5		1997-10-22 [FBD]
418OpenBSD 2.2             1997-12-01 [OBD]
419NetBSD 1.3              1998-01-04 [NBD]
420FreeBSD 2.2.6		1998-03-25 [FBD]
421NetBSD 1.3.1            1998-03-09 [NBD] (patch release)
422BSD/OS 3.1		1998-03-xx [BSDI]
423OpenBSD 2.3             1998-05-19 [OBD]
424NetBSD 1.3.2            1998-05-29 [NBD] (patch release)
425FreeBSD 2.2.7		1998-07-22 [FBD]
426BSD/OS 4.0		1998-08-xx [BSDI]
427				2-lock MP support, ELF executables
428FreeBSD 3.0		1998-10-16 [FBD]
429				FreeBSD-3.0 is a snapshot from -current,
430				while 3.1 and 3.2 are from 3.x-stable which
431				was branched quite some time after 3.0-release
432FreeBSD 2.2.8           1998-11-29 [FBD]
433OpenBSD 2.4             1998-12-01 [OBD]
434NetBSD 1.3.3            1998-12-23 [NBD] (patch release)
435FreeBSD 3.1		1999-02-15 [FBD]
436BSD/OS 4.0.1		1999-03-xx [BSDI]
437NetBSD 1.4              1999-05-12 [NBD]
438FreeBSD 3.2             1999-05-17 [FBD]
439OpenBSD 2.5             1999-05-19 [OBD]
440NetBSD 1.4.1            1999-08-26 [NBD] (patch release)
441FreeBSD 3.3             1999-09-17 [FBD]
442OpenBSD 2.6             1999-12-01 [OBD]
443FreeBSD 3.4             1999-12-20 [FBD]
444BSD/OS 4.1		1999-12-xx [BSDI]
445FreeBSD 4.0             2000-03-13 [FBD]
446NetBSD 1.4.2            2000-03-19 [NBD] (patch release)
447OpenBSD 2.7             2000-06-15 [OBD]
448FreeBSD 3.5		2000-06-24 [FBD]
449FreeBSD 4.1		2000-07-27 [FBD]
450FreeBSD 3.5.1		2000-07-28 [FBD]
451FreeBSD 4.1.1		2000-09-25 [FBD] (a network-only patch release)
452FreeBSD 4.2  		2000-11-21 [FBD]
453NetBSD 1.4.3		2000-11-25 [NBD] (patch release)
454BSD/OS 4.2		2000-11-29 [BSDI]
455OpenBSD 2.8		2000-12-01 [OBD]
456NetBSD 1.5              2000-12-06 [NBD]
457Mac OS X 10.0           2001-03-24 [APL]
458FreeBSD 4.3  		2001-04-20 [FBD]
459OpenBSD 2.9  		2001-06-01 [OBD]
460NetBSD 1.5.1		2001-07-11 [NBD] (patch release)
461NetBSD 1.5.2		2001-09-13 [NBD] (patch release)
462FreeBSD 4.4  		2001-09-18 [FBD]
463Mac OS X 10.1		2001-09-29 [APL]
464OpenBSD 3.0		2001-12-01 [OBD]
465FreeBSD 4.5  		2002-01-29 [FBD]
466BSD/OS 4.3		2002-03-14 [WRS]
467OpenBSD 3.1		2002-05-19 [OBD]
468FreeBSD 4.6  		2002-06-15 [FBD]
469NetBSD 1.5.3		2002-07-22 [NBD] (patch release)
470FreeBSD 4.6.2		2002-08-15 [FBD] (patch release)
471Mac OS X 10.2		2002-08-23 [APL]
472NetBSD 1.6		2002-09-14 [NBD]
473FreeBSD 4.7		2002-10-08 [FBD]
474OpenBSD 3.2		2002-11-01 [OBD]
475FreeBSD 5.0		2003-01-17 [FBD]
476				FreeBSD 5.0 is a separate branch off of
477				-current, similar to 3.0.
478FreeBSD 4.8		2003-04-03 [FBD]
479NetBSD 1.6.1		2003-04-21 [NBD] (patch release)
480OpenBSD 3.3		2003-05-01 [OBD]
481BSD/OS 5.0		2003-05-?? [WRS]
482FreeBSD 5.1		2003-06-09 [FBD]
483Mac OS X 10.3		2003-10-24 [APL]
484FreeBSD 4.9		2003-10-28 [FBD]
485BSD/OS 5.1 ISE		2003-10-?? [WRS] (final version)
486OpenBSD 3.4		2003-11-01 [OBD]
487FreeBSD 5.2		2004-01-12 [FBD]
488FreeBSD 5.2.1		2004-02-22 [FBD] (patch release)
489NetBSD 1.6.2		2004-03-01 [NBD] (patch release)
490OpenBSD 3.5		2004-04-01 [OBD]
491FreeBSD 4.10		2004-05-27 [FBD]
492DragonFly 1.0		2004-07-12 [DFB]
493OpenBSD 3.6		2004-10-29 [OBD]
494FreeBSD 5.3		2004-11-06 [FBD]
495NetBSD 2.0		2004-12-09 [NBD]
496FreeBSD 4.11		2005-01-25 [FBD]
497DragonFly 1.2.0		2005-04-08 [DFB]
498NetBSD 2.0.2		2005-04-14 [NBD] (security/critical release)
499Mac OS X 10.4		2005-04-29 [APL]
500FreeBSD 5.4		2005-05-09 [FBD]
501OpenBSD 3.7		2005-05-19 [OBD]
502NetBSD 2.0.3		2005-10-31 [NBD] (security/critical release)
503OpenBSD 3.8		2005-11-01 [OBD]
504FreeBSD 6.0		2005-11-01 [FBD]
505NetBSD 2.1		2005-11-02 [NBD]
506NetBSD 3.0		2005-12-23 [NBD]
507DragonFly 1.4.0		2006-01-08 [DFB]
508OpenBSD 3.9		2006-05-01 [OBD]
509FreeBSD 6.1		2006-05-08 [FBD]
510FreeBSD 5.5		2006-05-25 [FBD]
511NetBSD 3.0.1		2006-07-24 [NBD] (security/critical release)
512DragonFly 1.6.0		2006-07-24 [DFB]
513OpenBSD 4.0		2006-11-01 [OBD]
514NetBSD 3.0.2		2006-11-04 [NBD] (security/critical release)
515NetBSD 3.1		2006-11-04 [NBD]
516FreeBSD 6.2		2007-01-15 [FBD]
517DragonFly 1.8.0		2007-01-30 [DFB]
518OpenBSD 4.1		2007-05-01 [OBD]
519DragonFly 1.10.0	2007-08-06 [DFB]
520Mac OS X 10.5		2007-10-26 [APL]
521OpenBSD 4.2		2007-11-01 [OBD]
522NetBSD 4.0		2007-12-19 [NBD]
523FreeBSD 6.3		2008-01-18 [FBD]
524DragonFly 1.12.0	2008-02-26 [DFB]
525FreeBSD 7.0		2008-02-27 [FBD]
526OpenBSD 4.3		2008-05-01 [OBD]
527DragonFly 2.0.0		2008-07-21 [DFB]
528OpenBSD 4.4		2008-11-01 [OBD]
529FreeBSD 6.4		2008-11-28 [FBD]
530FreeBSD 7.1		2009-01-04 [FBD]
531DragonFly 2.2.0		2009-02-17 [DFB]
532NetBSD 5.0		2009-04-29 [NBD]
533OpenBSD 4.5		2009-05-01 [OBD]
534FreeBSD 7.2		2009-05-04 [FBD]
535Mac OS X 10.6		2009-06-08 [APL]
536DragonFly 2.4.0		2009-09-16 [DFB]
537OpenBSD 4.6		2009-10-18 [OBD]
538FreeBSD 8.0		2009-11-26 [FBD]
539FreeBSD 7.3		2010-03-23 [FBD]
540DragonFly 2.6.0		2010-03-28 [DFB]
541OpenBSD 4.7		2010-05-19 [OBD]
542FreeBSD 8.1		2010-07-24 [FBD]
543DragonFly 2.8.2		2010-10-30 [DFB]
544OpenBSD 4.8		2010-11-01 [OBD]
545NetBSD 5.1		2010-11-19 [NBD]
546FreeBSD 7.4		2011-02-24 [FBD]
547FreeBSD 8.2		2011-02-24 [FBD]
548DragonFly 2.10.1	2011-04-26 [DFB]
549OpenBSD 4.9		2011-05-01 [OBD]
550Mac OS X 10.7		2011-07-20 [APL]
551OpenBSD 5.0		2011-11-01 [OBD]
552FreeBSD 9.0		2012-01-12 [FBD]
553DragonFly 3.0.1		2012-02-21 [DFB]
554FreeBSD 8.3		2012-04-18 [FBD]
555OpenBSD 5.1		2012-05-01 [OBD]
556Mac OS X 10.8		2012-07-25 [APL]
557NetBSD 6.0		2012-10-17 [NBD]
558OpenBSD 5.2		2012-11-01 [OBD]
559DragonFly 3.2.1		2012-11-02 [DFB]
560FreeBSD 9.1		2012-12-30 [FBD]
561
562Bibliography
563------------------------
564
565Leffler, Samuel J., Marshall Kirk McKusick, Michael J Karels and John
566Quarterman. The Design and Implementation of the 4.3BSD UNIX Operating
567System. Reading, Mass. Addison-Wesley, 1989. ISBN 0-201-06196-1
568
569Salus, Peter H. A quarter century of UNIX. Addison-Wesley Publishing
570Company, Inc., 1994. ISBN 0-201-54777-5
571
572McKusick, Marshall Kirk, Keith Bostic, Michael J Karels, and John
573Quarterman. The Design and Implementation of the 4.4BSD Operating
574System. Reading, Mass. Addison-Wesley, 1996. ISBN 0-201-54979-4
575
576McKusick, Marshall Kirk, George Neville-Neil. The Design and
577Implementation of the FreeBSD Operating System.
578Addison-Wesley Professional, Published: Aug 2, 2004. ISBN 0-201-70245-2
579
580Doug McIlroy. Research Unix Reader.
581
582Michael G. Brown. The Role of BSD in the Development of Unix.
583Presented to the Tasmanian Unix Special Interest Group of the
584Australian Computer Society, Hobart, August 1993.
585
586Peter H. Salus. Unix at 25. Byte Magazine, October 1994.
587URL: http://www.byte.com/art/9410/sec8/art3.htm
588
589Andreas Klemm, Lars Köller. If you're going to San Francisco ...
590Die freien BSD-Varianten von Unix. c't April 1997, page 368ff.
591
592BSD Release Announcements collection.
593URL: http://www.FreeBSD.org/releases/
594
595BSD Hypertext Man Pages
596URL: http://www.FreeBSD.org/cgi/man.cgi
597
598UNIX history graphing project
599URL: http://minnie.tuhs.org/Unix_History/index.html
600
601UNIX history
602URL: http://www.levenez.com/unix/
603
604James Howard: The BSD Family Tree
605URL: http://ezine.daemonnews.org/200104/bsd_family.html
606("what are the differences between FreeBSD, NetBSD, and OpenBSD?")
607
608
609Acknowledgments
610---------------
611
612Josh Gilliam for suggestions, bug fixes, and finding very old
613original BSD announcements from Usenet or tapes.
614
615Steven M. Schultz for providing 2.8BSD, 2.10BSD, 2.11BSD manual pages.
616
617--
618Copyright (c) 1997-2012 Wolfram Schneider <wosch@FreeBSD.ORG>
619URL: http://cvsweb.freebsd.org/src/share/misc/bsd-family-tree
620
621$FreeBSD$
622