xref: /freebsd/share/misc/bsd-family-tree (revision 39beb93c3f8bdbf72a61fda42300b5ebed7390c8)
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               2.7.9BSD
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 |     V              |      |                 |                       |
231 |                    |      |                 |                       |
232FreeBSD 8 -current    |  NetBSD -current  OpenBSD -current             |
233 |                    |      |                 |                       |
234 v                    v      v                 v                       v
235
236Time
237----------------
238
239Time tolerance +/- 6 months, depending on which book/article you read; if it
240was the announcement in Usenet or if it was available as tape.
241
242[44B] McKusick, Marshall Kirk, Keith Bostic, Michael J Karels,
243	and John Quarterman. The Design and Implementation of
244	the 4.4BSD Operating System.
245[APL] Apple website [http://www.apple.com/macosx/]
246[BSDI] Berkeley Software Design, Inc.
247[DFB] DragonFlyBSD Project, The.
248[DOC] README, COPYRIGHT on tape.
249[FBD] FreeBSD Project, The.
250[KB]  Keith Bostic. BSD2.10 available from Usenix. comp.unix.sources,
251	Volume 11, Info 4, April, 1987.
252[KKK] Mike Karels, Kirk McKusick, and Keith Bostic. tahoe announcement.
253	comp.bugs.4bsd.ucb-fixes, June 15, 1988.
254[KSJ] Michael J. Karels, Carl F. Smith, and William F. Jolitz.
255	Changes in the Kernel in 2.9BSD. Second Berkeley Software
256	Distribution UNIX Version 2.9, July, 1983.
257[NBD] NetBSD Project, The.
258[OBD] OpenBSD Project, The.
259[QCU] Salus, Peter H. A quarter century of UNIX.
260[SMS] Steven M. Schultz. 2.11BSD, UNIX for the PDP-11.
261[USE] Usenet announcement.
262[WRS] Wind River Systems, Inc.
263[dmr] Dennis Ritchie, via E-Mail
264
265Multics                 1965
266UNIX                    Summer 1969
267				DEC PDP-7
268First   Edition         1971-11-03 [QCU]
269				DEC PDP-11/20, Assembler
270Second  Edition         1972-06-12 [QCU]
271				10 UNIX installations
272Third   Edition         1973-02-xx [QCU]
273				Pipes, 16 installations
274Fourth  Edition         1973-11-xx [QCU]
275				rewriting in C effected,
276                                above 30 installations
277Fifth   Edition         1974-06-xx [QCU]
278				above 50 installations
279Sixth   Edition         1975-05-xx [QCU]
280				port to DEC Vax
281Seventh Edition         1979-01-xx [QCU]
282				first portable UNIX
283Eighth  Edition         1985-02-xx [QCU]
284				VAX 11/750, VAX 11/780 [dmr]
285				descended from 4.1c BSD [dmr]
286				descended from 4.1 BSD [44B]
287			scooping-out and replacement of the character-device
288			and networking part by the streams mechanism
289
290Ninth   Edition         1986-09-xx [QCU]
291Tenth   Edition         1989-10-xx [QCU]
292
2931BSD                    late 1977
294			1978-03-09 [QCU]
295				PDP-11, Pascal, ex(1)
296				30 free copies of 1BSD sent out
297				35 tapes sold for 50 USD [QCU]
2982BSD                    mid 1978 [QCU]
299				75 2BSD tapes shipped
3002.7.9BSD		?? [SMS]
3012.8BSD			1981-07-xx [KSJ]
302
3032.8.1BSD		1982-01-xx [QCU]
304				set of performance improvements
3052.9BSD			1983-07-xx [KSJ]
3062.9.1BSD                1983-11-xx
3072.9BSD-Seismo		1985-08-xx [SMS]
3082.10BSD			1987-04-xx [KKK]
3092.10.1BSD		1989-01-xx [SMS]
3102.11BSD			1992-02-xx [SMS]
3112.11BSD rev #430	1999-12-13 [SMS]
312
31332V			1978-1[01]-xx [QCU]
3143BSD                    late 1979 [QCU]
315				virtual memory, page replacement,
316                        	demand paging
3174.0BSD                  1980-10-xx
3184.1BSD                  1981-07-08 [DOC]
3194.1aBSD                 1982-04-xx
320				alpha release, 100 sites, networking [44B]
3214.1bBSD				internal release, fast filesystem [44B]
3224.1cBSD                 late 1982
323				beta release, IPC [44B]
3244.2BSD                  1983-09-xx [QCU]
325                        1983-08-03 [DOC]
3264.3BSD                  1986-06-xx [QCU]
327			1986-04-05 [KB], [DOC]
3284.3BSD Tahoe            1988-06-15 [QCU], [DOC]
3294.3BSD NET/1            1988-11-xx [QCU]
330                        1989-01-01 [DOC]
3314.3BSD Reno             1990-06-29 [QCU], [DOC]
3324.3BSD NET/2            1991-06-28 [QCU], [DOC]
333
334BSD/386 ALPHA		1991-12-xx [BSDI]
335				first code released to people outside BSDI
336386BSD 0.0              1992-02-xx [DOC]
337BSD/386 0.3.1	        1992-04-xx [BSDI] first ext. beta; B customers
338BSD/386 0.3.3		1992-06-xx [BSDI] first CDROM version
339386BSD 0.1              1992-07-28 [DOC]
3404.4BSD Alpha            1992-07-07
341BSD/386 0.9.3		1992-10-xx [BSDI]
342				first external gamma; G customers
343BSD/386 0.9.4		1992-12-xx [BSDI]
344				would have been 1.0 except for request
345				for preliminary injunction
346BSD/386 1.0 		1993-03-xx [BSDI]
347				injunction denied; first official release
348NetBSD 0.8              1993-04-20 [NBD]
3494.4BSD                  1993-06-01 [USE]
350NetBSD 0.9              1993-08-23 [NBD]
351FreeBSD 1.0		1993-11-01 [FBD]
352FreeBSD 1.0.2		1993-11-14 [FBD]
353				supersedes 1.0 13 days after release.
354BSD/386 1.1		1994-02-xx [BSDI]
3554.4BSD Lite             1994-03-01 [USE]
356FreeBSD 1.1		1994-05-07 [FBD]
357FreeBSD 1.1.5		1994-06-30 [FBD]
358FreeBSD 1.1.5.1		1994-07-05 [FBD]
359				supersedes 1.1.5 5 days after release.
360NetBSD 1.0              1994-10-26 [NBD]
361386BSD 1.0              1994-11-12 [USE]
362FreeBSD 2.0		1994-11-23 [FBD]
363BSD/OS 2.0		1995-01-xx [BSDI] 4.4 lite based
364FreeBSD 2.0.5		1995-06-10 [FBD]
365BSD/OS 2.0.1		1995-06-xx [BSDI]
3664.4BSD Lite Release 2	1995-06-xx [44B]
367				the true final distribution from the CSRG
368FreeBSD 2.1.0		1995-11-19 [FBD]
369NetBSD 1.1              1995-11-26 [NBD]
370BSD/OS 2.1		1996-01-xx [BSDI]
371FreeBSD 2.1.5		1996-07-14 [FBD]
372NetBSD 1.2              1996-10-04 [NBD]
373OpenBSD 2.0             1996-10-18 [OBD]
374FreeBSD 2.1.6		1996-11-16 [FBD]
375FreeBSD 2.1.6.1		1996-11-25 [FBD] (sendmail security release)
376Rhapsody		1997-xx-xx
377FreeBSD 2.1.7		1997-02-20 [FBD]
378BSD/OS 3.0		1997-02-xx [BSDI] 4.4 lite2 based
379FreeBSD 2.2.0		1997-03-16 [FBD]
380FreeBSD 2.2.1		1997-03-25 [FBD]
381FreeBSD 2.2.2		1997-05-16 [FBD]
382NetBSD 1.2.1            1997-05-20 [NBD] (patch release)
383OpenBSD 2.1             1997-06-01 [OBD]
384FreeBSD 2.2.5		1997-10-22 [FBD]
385OpenBSD 2.2             1997-12-01 [OBD]
386NetBSD 1.3              1998-01-04 [NBD]
387FreeBSD 2.2.6		1998-03-25 [FBD]
388NetBSD 1.3.1            1998-03-09 [NBD] (patch release)
389BSD/OS 3.1		1998-03-xx [BSDI]
390OpenBSD 2.3             1998-05-19 [OBD]
391NetBSD 1.3.2            1998-05-29 [NBD] (patch release)
392FreeBSD 2.2.7		1998-07-22 [FBD]
393BSD/OS 4.0		1998-08-xx [BSDI]
394				2-lock MP support, ELF executables
395FreeBSD 3.0		1998-10-16 [FBD]
396				FreeBSD-3.0 is a snapshot from -current,
397				while 3.1 and 3.2 are from 3.x-stable which
398				was branched quite some time after 3.0-release
399FreeBSD 2.2.8           1998-11-29 [FBD]
400OpenBSD 2.4             1998-12-01 [OBD]
401NetBSD 1.3.3            1998-12-23 [NBD] (patch release)
402FreeBSD 3.1		1999-02-15 [FBD]
403BSD/OS 4.0.1		1999-03-xx [BSDI]
404NetBSD 1.4              1999-05-12 [NBD]
405FreeBSD 3.2             1999-05-17 [FBD]
406OpenBSD 2.5             1999-05-19 [OBD]
407NetBSD 1.4.1            1999-08-26 [NBD] (patch release)
408FreeBSD 3.3             1999-09-17 [FBD]
409OpenBSD 2.6             1999-12-01 [OBD]
410FreeBSD 3.4             1999-12-20 [FBD]
411BSD/OS 4.1		1999-12-xx [BSDI]
412FreeBSD 4.0             2000-03-13 [FBD]
413NetBSD 1.4.2            2000-03-19 [NBD] (patch release)
414OpenBSD 2.7             2000-06-15 [OBD]
415FreeBSD 3.5		2000-06-24 [FBD]
416FreeBSD 4.1		2000-07-27 [FBD]
417FreeBSD 3.5.1		2000-07-28 [FBD]
418FreeBSD 4.1.1		2000-09-25 [FBD] (a network-only patch release)
419FreeBSD 4.2  		2000-11-21 [FBD]
420NetBSD 1.4.3		2000-11-25 [NBD] (patch release)
421BSD/OS 4.2		2000-11-29 [BSDI]
422OpenBSD 2.8		2000-12-01 [OBD]
423NetBSD 1.5              2000-12-06 [NBD]
424Mac OS X 10.0           2001-03-24 [APL]
425FreeBSD 4.3  		2001-04-20 [FBD]
426OpenBSD 2.9  		2001-06-01 [OBD]
427NetBSD 1.5.1		2001-07-11 [NBD] (patch release)
428NetBSD 1.5.2		2001-09-13 [NBD] (patch release)
429FreeBSD 4.4  		2001-09-18 [FBD]
430Mac OS X 10.1		2001-09-29 [APL]
431OpenBSD 3.0		2001-12-01 [OBD]
432FreeBSD 4.5  		2002-01-29 [FBD]
433BSD/OS 4.3		2002-03-14 [WRS]
434OpenBSD 3.1		2002-05-19 [OBD]
435FreeBSD 4.6  		2002-06-15 [FBD]
436NetBSD 1.5.3		2002-07-22 [NBD] (patch release)
437FreeBSD 4.6.2		2002-08-15 [FBD] (patch release)
438Mac OS X 10.2		2002-08-23 [APL]
439NetBSD 1.6		2002-09-14 [NBD]
440FreeBSD 4.7		2002-10-08 [FBD]
441OpenBSD 3.2		2002-11-01 [OBD]
442FreeBSD 5.0		2003-01-17 [FBD]
443				FreeBSD 5.0 is a separate branch off of
444				-current, similar to 3.0.
445FreeBSD 4.8		2003-04-03 [FBD]
446NetBSD 1.6.1		2003-04-21 [NBD] (patch release)
447OpenBSD 3.3		2003-05-01 [OBD]
448BSD/OS 5.0		2003-05-?? [WRS]
449FreeBSD 5.1		2003-06-09 [FBD]
450Mac OS X 10.3		2003-10-24 [APL]
451FreeBSD 4.9		2003-10-28 [FBD]
452BSD/OS 5.1 ISE		2003-10-?? [WRS] (final version)
453OpenBSD 3.4		2003-11-01 [OBD]
454FreeBSD 5.2		2004-01-12 [FBD]
455FreeBSD 5.2.1		2004-02-22 [FBD] (patch release)
456NetBSD 1.6.2		2004-03-01 [NBD] (patch release)
457OpenBSD 3.5		2004-04-01 [OBD]
458FreeBSD 4.10		2004-05-27 [FBD]
459DragonFly 1.0		2004-07-12 [DFB]
460OpenBSD 3.6		2004-10-29 [OBD]
461FreeBSD 5.3		2004-11-06 [FBD]
462NetBSD 2.0		2004-12-09 [NBD]
463FreeBSD 4.11		2005-01-25 [FBD]
464DragonFly 1.2.0		2005-04-08 [DFB]
465NetBSD 2.0.2		2005-04-14 [NBD] (security/critical release)
466Mac OS X 10.4		2005-04-29 [APL]
467FreeBSD 5.4		2005-05-09 [FBD]
468OpenBSD 3.7		2005-05-19 [OBD]
469NetBSD 2.0.3		2005-10-31 [NBD] (security/critical release)
470OpenBSD 3.8		2005-11-01 [OBD]
471FreeBSD 6.0		2005-11-01 [FBD]
472NetBSD 2.1		2005-11-02 [NBD]
473NetBSD 3.0		2005-12-23 [NBD]
474DragonFly 1.4.0		2006-01-08 [DFB]
475OpenBSD 3.9		2006-05-01 [OBD]
476FreeBSD 6.1		2006-05-08 [FBD]
477FreeBSD 5.5		2006-05-25 [FBD]
478NetBSD 3.0.1		2006-07-24 [NBD] (security/critical release)
479DragonFly 1.6.0		2006-07-24 [DFB]
480OpenBSD 4.0		2006-11-01 [OBD]
481NetBSD 3.0.2		2006-11-04 [NBD] (security/critical release)
482NetBSD 3.1		2006-11-04 [NBD]
483FreeBSD 6.2		2007-01-15 [FBD]
484DragonFly 1.8.0		2007-01-30 [DFB]
485OpenBSD 4.1		2007-05-01 [OBD]
486DragonFly 1.10.0	2007-08-06 [DFB]
487Mac OS X 10.5		2007-10-26 [APL]
488OpenBSD 4.2		2007-11-01 [OBD]
489NetBSD 4.0		2007-12-19 [NBD]
490FreeBSD 6.3		2008-01-18 [FBD]
491DragonFly 1.12.0	2008-02-26 [DFB]
492FreeBSD 7.0		2008-02-27 [FBD]
493OpenBSD 4.3		2008-05-01 [OBD]
494DragonFly 2.0.0		2008-07-21 [DFB]
495OpenBSD 4.4		2008-11-01 [OBD]
496FreeBSD 6.4		2008-11-28 [FBD]
497FreeBSD 7.1		2009-01-04 [FBD]
498DragonFly 2.2.0		2009-02-17 [DFB]
499
500Bibliography
501------------------------
502
503Leffler, Samuel J., Marshall Kirk McKusick, Michael J Karels and John
504Quarterman. The Design and Implementation of the 4.3BSD UNIX Operating
505System. Reading, Mass. Addison-Wesley, 1989. ISBN 0-201-06196-1
506
507Salus, Peter H. A quarter century of UNIX. Addison-Wesley Publishing
508Company, Inc., 1994. ISBN 0-201-54777-5
509
510McKusick, Marshall Kirk, Keith Bostic, Michael J Karels, and John
511Quarterman. The Design and Implementation of the 4.4BSD Operating
512System. Reading, Mass. Addison-Wesley, 1996. ISBN 0-201-54979-4
513
514McKusick, Marshall Kirk, George Neville-Neil. The Design and
515Implementation of the FreeBSD Operating System.
516Addison-Wesley Professional, Published: Aug 2, 2004. ISBN 0-201-70245-2
517
518Doug McIlroy. Research Unix Reader.
519
520Michael G. Brown. The Role of BSD in the Development of Unix.
521Presented to the Tasmanian Unix Special Interest Group of the
522Australian Computer Society, Hobart, August 1993.
523
524Peter H. Salus. Unix at 25. Byte Magazine, October 1994.
525URL: http://www.byte.com/art/9410/sec8/art3.htm
526
527Andreas Klemm, Lars K�ller. If you're going to San Francisco ...
528Die freien BSD-Varianten von Unix. c't April 1997, page 368ff.
529
530BSD Release Announcements collection.
531URL: http://www.de.FreeBSD.org/de/ftp/releases/
532
533BSD Hypertext Man Pages
534URL: http://www.FreeBSD.org/cgi/man.cgi
535
536UNIX history graphing project
537URL: http://minnie.tuhs.org/Unix_History/index.html
538
539UNIX history
540URL: http://www.levenez.com/unix/
541
542James Howard: The BSD Family Tree
543URL: http://ezine.daemonnews.org/200104/bsd_family.html
544("what are the differences between FreeBSD, NetBSD, and OpenBSD?")
545
546
547Acknowledgments
548---------------
549
550Josh Gilliam for suggestions, bug fixes, and finding very old
551original BSD announcements from Usenet or tapes.
552
553Steven M. Schultz for providing 2.8BSD, 2.10BSD, 2.11BSD manual pages.
554
555--
556Copyright (c) 1997-2007 Wolfram Schneider <wosch@FreeBSD.ORG>
557URL: http://cvsweb.freebsd.org/src/share/misc/bsd-family-tree
558
559$FreeBSD$
560