xref: /freebsd/share/misc/bsd-family-tree (revision bb15ca603fa442c72dde3f3cb8b46db6970e3950)
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 |     v              |      |             OpenBSD 4.9                 |
250 |                    |      |                 |                       |
251 |                    |      |                 |                       |
252 |                    |      |             OpenBSD 5.0                 |
253 |                    |      |                 |                       |
254FreeBSD 9 -current    |  NetBSD -current  OpenBSD -current             |
255 |                    |      |                 |                       |
256 v                    v      v                 v                       v
257
258Time
259----------------
260
261Time tolerance +/- 6 months, depending on which book/article you read; if it
262was the announcement in Usenet or if it was available as tape.
263
264[44B] McKusick, Marshall Kirk, Keith Bostic, Michael J Karels,
265	and John Quarterman. The Design and Implementation of
266	the 4.4BSD Operating System.
267[APL] Apple website [http://www.apple.com/macosx/]
268[BSDI] Berkeley Software Design, Inc.
269[DFB] DragonFlyBSD Project, The.
270[DOC] README, COPYRIGHT on tape.
271[FBD] FreeBSD Project, The.
272[KB]  Keith Bostic. BSD2.10 available from Usenix. comp.unix.sources,
273	Volume 11, Info 4, April, 1987.
274[KKK] Mike Karels, Kirk McKusick, and Keith Bostic. tahoe announcement.
275	comp.bugs.4bsd.ucb-fixes, June 15, 1988.
276[KSJ] Michael J. Karels, Carl F. Smith, and William F. Jolitz.
277	Changes in the Kernel in 2.9BSD. Second Berkeley Software
278	Distribution UNIX Version 2.9, July, 1983.
279[NBD] NetBSD Project, The.
280[OBD] OpenBSD Project, The.
281[QCU] Salus, Peter H. A quarter century of UNIX.
282[SMS] Steven M. Schultz. 2.11BSD, UNIX for the PDP-11.
283[TUHS] The Unix Historical Society.  http://minnie.tuhs.org/Unix_History/.
284[USE] Usenet announcement.
285[WRS] Wind River Systems, Inc.
286[dmr] Dennis Ritchie, via E-Mail
287
288Multics                 1965
289UNIX                    Summer 1969
290				DEC PDP-7
291First   Edition         1971-11-03 [QCU]
292				DEC PDP-11/20, Assembler
293Second  Edition         1972-06-12 [QCU]
294				10 UNIX installations
295Third   Edition         1973-02-xx [QCU]
296				Pipes, 16 installations
297Fourth  Edition         1973-11-xx [QCU]
298				rewriting in C effected,
299                                above 30 installations
300Fifth   Edition         1974-06-xx [QCU]
301				above 50 installations
302Sixth   Edition         1975-05-xx [QCU]
303				port to DEC Vax
304Seventh Edition         1979-01-xx [QCU]
305				first portable UNIX
306Eighth  Edition         1985-02-xx [QCU]
307				VAX 11/750, VAX 11/780 [dmr]
308				descended from 4.1c BSD [dmr]
309				descended from 4.1 BSD [44B]
310			scooping-out and replacement of the character-device
311			and networking part by the streams mechanism
312
313Ninth   Edition         1986-09-xx [QCU]
314Tenth   Edition         1989-10-xx [QCU]
315
3161BSD                    late 1977
317			1978-03-09 [QCU]
318				PDP-11, Pascal, ex(1)
319				30 free copies of 1BSD sent out
320				35 tapes sold for 50 USD [QCU]
3212BSD                    mid 1978 [QCU] 1979-05-10 [TUHS]
322				75 2BSD tapes shipped
3232.79BSD			1980-04-xx [TUHS]
3242.8BSD			1981-07-xx [KSJ]
325
3262.8.1BSD		1982-01-xx [QCU]
327				set of performance improvements
3282.9BSD			1983-07-xx [KSJ]
3292.9.1BSD                1983-11-xx [TUHS]
3302.9BSD-Seismo		1985-08-xx [SMS]
3312.10BSD			1987-04-xx [KKK]
3322.10.1BSD		1989-01-xx [SMS]
3332.11BSD			1992-02-xx [SMS]
3342.11BSD rev #430	1999-12-13 [SMS]
335
33632V			1978-1[01]-xx [QCU]
3373BSD                    late 1979 [QCU] March 1980 [TUHS]
338				virtual memory, page replacement,
339                        	demand paging
3404.0BSD                  1980-10-xx
3414.1BSD                  1981-07-08 [DOC]
3424.1aBSD                 1982-04-xx
343				alpha release, 100 sites, networking [44B]
3444.1bBSD				internal release, fast filesystem [44B]
3454.1cBSD                 late 1982
346				beta release, IPC [44B]
3474.2BSD                  1983-09-xx [QCU]
348                        1983-08-03 [DOC]
3494.3BSD                  1986-06-xx [QCU]
350			1986-04-05 [KB], [DOC]
3514.3BSD Tahoe            1988-06-15 [QCU], [DOC]
3524.3BSD NET/1            1988-11-xx [QCU]
353                        1989-01-01 [DOC]
3544.3BSD Reno             1990-06-29 [QCU], [DOC]
3554.3BSD NET/2            1991-06-28 [QCU], [DOC]
356
357BSD/386 ALPHA		1991-12-xx [BSDI]
358				first code released to people outside BSDI
359386BSD 0.0              1992-02-xx [DOC]
360BSD/386 0.3.1	        1992-04-xx [BSDI] first ext. beta; B customers
361BSD/386 0.3.3		1992-06-xx [BSDI] first CDROM version
362386BSD 0.1              1992-07-28 [DOC]
3634.4BSD Alpha            1992-07-07
364BSD/386 0.9.3		1992-10-xx [BSDI]
365				first external gamma; G customers
366BSD/386 0.9.4		1992-12-xx [BSDI]
367				would have been 1.0 except for request
368				for preliminary injunction
369BSD/386 1.0 		1993-03-xx [BSDI]
370				injunction denied; first official release
371NetBSD 0.8              1993-04-20 [NBD]
3724.4BSD                  1993-06-01 [USE]
373NetBSD 0.9              1993-08-23 [NBD]
374FreeBSD 1.0		1993-11-01 [FBD]
375FreeBSD 1.0.2		1993-11-14 [FBD]
376				supersedes 1.0 13 days after release.
377BSD/386 1.1		1994-02-xx [BSDI]
3784.4BSD Lite             1994-03-01 [USE]
379FreeBSD 1.1		1994-05-07 [FBD]
380FreeBSD 1.1.5		1994-06-30 [FBD]
381FreeBSD 1.1.5.1		1994-07-05 [FBD]
382				supersedes 1.1.5 5 days after release.
383NetBSD 1.0              1994-10-26 [NBD]
384386BSD 1.0              1994-11-12 [USE]
385FreeBSD 2.0		1994-11-23 [FBD]
386BSD/OS 2.0		1995-01-xx [BSDI] 4.4 lite based
387FreeBSD 2.0.5		1995-06-10 [FBD]
388BSD/OS 2.0.1		1995-06-xx [BSDI]
3894.4BSD Lite Release 2	1995-06-xx [44B]
390				the true final distribution from the CSRG
391FreeBSD 2.1.0		1995-11-19 [FBD]
392NetBSD 1.1              1995-11-26 [NBD]
393BSD/OS 2.1		1996-01-xx [BSDI]
394FreeBSD 2.1.5		1996-07-14 [FBD]
395NetBSD 1.2              1996-10-04 [NBD]
396OpenBSD 2.0             1996-10-18 [OBD]
397FreeBSD 2.1.6		1996-11-16 [FBD]
398FreeBSD 2.1.6.1		1996-11-25 [FBD] (sendmail security release)
399Rhapsody		1997-xx-xx
400FreeBSD 2.1.7		1997-02-20 [FBD]
401BSD/OS 3.0		1997-02-xx [BSDI] 4.4 lite2 based
402FreeBSD 2.2.0		1997-03-16 [FBD]
403FreeBSD 2.2.1		1997-03-25 [FBD]
404FreeBSD 2.2.2		1997-05-16 [FBD]
405NetBSD 1.2.1            1997-05-20 [NBD] (patch release)
406OpenBSD 2.1             1997-06-01 [OBD]
407FreeBSD 2.2.5		1997-10-22 [FBD]
408OpenBSD 2.2             1997-12-01 [OBD]
409NetBSD 1.3              1998-01-04 [NBD]
410FreeBSD 2.2.6		1998-03-25 [FBD]
411NetBSD 1.3.1            1998-03-09 [NBD] (patch release)
412BSD/OS 3.1		1998-03-xx [BSDI]
413OpenBSD 2.3             1998-05-19 [OBD]
414NetBSD 1.3.2            1998-05-29 [NBD] (patch release)
415FreeBSD 2.2.7		1998-07-22 [FBD]
416BSD/OS 4.0		1998-08-xx [BSDI]
417				2-lock MP support, ELF executables
418FreeBSD 3.0		1998-10-16 [FBD]
419				FreeBSD-3.0 is a snapshot from -current,
420				while 3.1 and 3.2 are from 3.x-stable which
421				was branched quite some time after 3.0-release
422FreeBSD 2.2.8           1998-11-29 [FBD]
423OpenBSD 2.4             1998-12-01 [OBD]
424NetBSD 1.3.3            1998-12-23 [NBD] (patch release)
425FreeBSD 3.1		1999-02-15 [FBD]
426BSD/OS 4.0.1		1999-03-xx [BSDI]
427NetBSD 1.4              1999-05-12 [NBD]
428FreeBSD 3.2             1999-05-17 [FBD]
429OpenBSD 2.5             1999-05-19 [OBD]
430NetBSD 1.4.1            1999-08-26 [NBD] (patch release)
431FreeBSD 3.3             1999-09-17 [FBD]
432OpenBSD 2.6             1999-12-01 [OBD]
433FreeBSD 3.4             1999-12-20 [FBD]
434BSD/OS 4.1		1999-12-xx [BSDI]
435FreeBSD 4.0             2000-03-13 [FBD]
436NetBSD 1.4.2            2000-03-19 [NBD] (patch release)
437OpenBSD 2.7             2000-06-15 [OBD]
438FreeBSD 3.5		2000-06-24 [FBD]
439FreeBSD 4.1		2000-07-27 [FBD]
440FreeBSD 3.5.1		2000-07-28 [FBD]
441FreeBSD 4.1.1		2000-09-25 [FBD] (a network-only patch release)
442FreeBSD 4.2  		2000-11-21 [FBD]
443NetBSD 1.4.3		2000-11-25 [NBD] (patch release)
444BSD/OS 4.2		2000-11-29 [BSDI]
445OpenBSD 2.8		2000-12-01 [OBD]
446NetBSD 1.5              2000-12-06 [NBD]
447Mac OS X 10.0           2001-03-24 [APL]
448FreeBSD 4.3  		2001-04-20 [FBD]
449OpenBSD 2.9  		2001-06-01 [OBD]
450NetBSD 1.5.1		2001-07-11 [NBD] (patch release)
451NetBSD 1.5.2		2001-09-13 [NBD] (patch release)
452FreeBSD 4.4  		2001-09-18 [FBD]
453Mac OS X 10.1		2001-09-29 [APL]
454OpenBSD 3.0		2001-12-01 [OBD]
455FreeBSD 4.5  		2002-01-29 [FBD]
456BSD/OS 4.3		2002-03-14 [WRS]
457OpenBSD 3.1		2002-05-19 [OBD]
458FreeBSD 4.6  		2002-06-15 [FBD]
459NetBSD 1.5.3		2002-07-22 [NBD] (patch release)
460FreeBSD 4.6.2		2002-08-15 [FBD] (patch release)
461Mac OS X 10.2		2002-08-23 [APL]
462NetBSD 1.6		2002-09-14 [NBD]
463FreeBSD 4.7		2002-10-08 [FBD]
464OpenBSD 3.2		2002-11-01 [OBD]
465FreeBSD 5.0		2003-01-17 [FBD]
466				FreeBSD 5.0 is a separate branch off of
467				-current, similar to 3.0.
468FreeBSD 4.8		2003-04-03 [FBD]
469NetBSD 1.6.1		2003-04-21 [NBD] (patch release)
470OpenBSD 3.3		2003-05-01 [OBD]
471BSD/OS 5.0		2003-05-?? [WRS]
472FreeBSD 5.1		2003-06-09 [FBD]
473Mac OS X 10.3		2003-10-24 [APL]
474FreeBSD 4.9		2003-10-28 [FBD]
475BSD/OS 5.1 ISE		2003-10-?? [WRS] (final version)
476OpenBSD 3.4		2003-11-01 [OBD]
477FreeBSD 5.2		2004-01-12 [FBD]
478FreeBSD 5.2.1		2004-02-22 [FBD] (patch release)
479NetBSD 1.6.2		2004-03-01 [NBD] (patch release)
480OpenBSD 3.5		2004-04-01 [OBD]
481FreeBSD 4.10		2004-05-27 [FBD]
482DragonFly 1.0		2004-07-12 [DFB]
483OpenBSD 3.6		2004-10-29 [OBD]
484FreeBSD 5.3		2004-11-06 [FBD]
485NetBSD 2.0		2004-12-09 [NBD]
486FreeBSD 4.11		2005-01-25 [FBD]
487DragonFly 1.2.0		2005-04-08 [DFB]
488NetBSD 2.0.2		2005-04-14 [NBD] (security/critical release)
489Mac OS X 10.4		2005-04-29 [APL]
490FreeBSD 5.4		2005-05-09 [FBD]
491OpenBSD 3.7		2005-05-19 [OBD]
492NetBSD 2.0.3		2005-10-31 [NBD] (security/critical release)
493OpenBSD 3.8		2005-11-01 [OBD]
494FreeBSD 6.0		2005-11-01 [FBD]
495NetBSD 2.1		2005-11-02 [NBD]
496NetBSD 3.0		2005-12-23 [NBD]
497DragonFly 1.4.0		2006-01-08 [DFB]
498OpenBSD 3.9		2006-05-01 [OBD]
499FreeBSD 6.1		2006-05-08 [FBD]
500FreeBSD 5.5		2006-05-25 [FBD]
501NetBSD 3.0.1		2006-07-24 [NBD] (security/critical release)
502DragonFly 1.6.0		2006-07-24 [DFB]
503OpenBSD 4.0		2006-11-01 [OBD]
504NetBSD 3.0.2		2006-11-04 [NBD] (security/critical release)
505NetBSD 3.1		2006-11-04 [NBD]
506FreeBSD 6.2		2007-01-15 [FBD]
507DragonFly 1.8.0		2007-01-30 [DFB]
508OpenBSD 4.1		2007-05-01 [OBD]
509DragonFly 1.10.0	2007-08-06 [DFB]
510Mac OS X 10.5		2007-10-26 [APL]
511OpenBSD 4.2		2007-11-01 [OBD]
512NetBSD 4.0		2007-12-19 [NBD]
513FreeBSD 6.3		2008-01-18 [FBD]
514DragonFly 1.12.0	2008-02-26 [DFB]
515FreeBSD 7.0		2008-02-27 [FBD]
516OpenBSD 4.3		2008-05-01 [OBD]
517DragonFly 2.0.0		2008-07-21 [DFB]
518OpenBSD 4.4		2008-11-01 [OBD]
519FreeBSD 6.4		2008-11-28 [FBD]
520FreeBSD 7.1		2009-01-04 [FBD]
521DragonFly 2.2.0		2009-02-17 [DFB]
522NetBSD 5.0		2009-04-29 [NBD]
523OpenBSD 4.5		2009-05-01 [OBD]
524FreeBSD 7.2		2009-05-04 [FBD]
525Mac OS X 10.6		2009-06-08 [APL]
526DragonFly 2.4.0		2009-09-16 [DFB]
527OpenBSD 4.6		2009-10-18 [OBD]
528FreeBSD 8.0		2009-11-26 [FBD]
529FreeBSD 7.3		2010-03-23 [FBD]
530DragonFly 2.6.0		2010-03-28 [DFB]
531OpenBSD 4.7		2010-05-19 [OBD]
532FreeBSD 8.1		2010-07-24 [FBD]
533DragonFly 2.8.2		2010-10-30 [DFB]
534OpenBSD 4.8		2010-11-01 [OBD]
535NetBSD 5.1		2010-11-19 [NBD]
536FreeBSD 7.4		2011-02-24 [FBD]
537FreeBSD 8.2		2011-02-24 [FBD]
538DragonFly 2.10.1	2011-04-26 [DFB]
539OpenBSD 4.9		2011-05-01 [OBD]
540OpenBSD 5.0		2011-11-01 [OBD]
541
542Bibliography
543------------------------
544
545Leffler, Samuel J., Marshall Kirk McKusick, Michael J Karels and John
546Quarterman. The Design and Implementation of the 4.3BSD UNIX Operating
547System. Reading, Mass. Addison-Wesley, 1989. ISBN 0-201-06196-1
548
549Salus, Peter H. A quarter century of UNIX. Addison-Wesley Publishing
550Company, Inc., 1994. ISBN 0-201-54777-5
551
552McKusick, Marshall Kirk, Keith Bostic, Michael J Karels, and John
553Quarterman. The Design and Implementation of the 4.4BSD Operating
554System. Reading, Mass. Addison-Wesley, 1996. ISBN 0-201-54979-4
555
556McKusick, Marshall Kirk, George Neville-Neil. The Design and
557Implementation of the FreeBSD Operating System.
558Addison-Wesley Professional, Published: Aug 2, 2004. ISBN 0-201-70245-2
559
560Doug McIlroy. Research Unix Reader.
561
562Michael G. Brown. The Role of BSD in the Development of Unix.
563Presented to the Tasmanian Unix Special Interest Group of the
564Australian Computer Society, Hobart, August 1993.
565
566Peter H. Salus. Unix at 25. Byte Magazine, October 1994.
567URL: http://www.byte.com/art/9410/sec8/art3.htm
568
569Andreas Klemm, Lars Köller. If you're going to San Francisco ...
570Die freien BSD-Varianten von Unix. c't April 1997, page 368ff.
571
572BSD Release Announcements collection.
573URL: http://www.FreeBSD.org/releases/
574
575BSD Hypertext Man Pages
576URL: http://www.FreeBSD.org/cgi/man.cgi
577
578UNIX history graphing project
579URL: http://minnie.tuhs.org/Unix_History/index.html
580
581UNIX history
582URL: http://www.levenez.com/unix/
583
584James Howard: The BSD Family Tree
585URL: http://ezine.daemonnews.org/200104/bsd_family.html
586("what are the differences between FreeBSD, NetBSD, and OpenBSD?")
587
588
589Acknowledgments
590---------------
591
592Josh Gilliam for suggestions, bug fixes, and finding very old
593original BSD announcements from Usenet or tapes.
594
595Steven M. Schultz for providing 2.8BSD, 2.10BSD, 2.11BSD manual pages.
596
597--
598Copyright (c) 1997-2007 Wolfram Schneider <wosch@FreeBSD.ORG>
599URL: http://cvsweb.freebsd.org/src/share/misc/bsd-family-tree
600
601$FreeBSD$
602