bsd-family-tree revision 57000 
1The Unix system family tree / BSD history chart
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      /           |                      |
32Eighth Edition     |                 2.8.1BSD
33     |            |                      |
34     |        4.1aBSD -----------\       |
35     |            |                \     |
36     |        4.1bBSD                \   |
37     |            |                    \ |
38     |        4.1cBSD --------------> 2.9BSD
39     |            |                      |
40     |            |                   2.9BSD-Seismo
41     |            |                      |
42     +----<--- 4.2BSD               2.9.1BSD
43     |            |                      |
44     +----<--- 4.3BSD -------------> 2.10BSD
45     |            |               /      |
46Ninth Edition     |              / 2.10.1BSD
47     |         4.3BSD Tahoe-----+        |
48     |            |              \       |
49     |            |                \     |
50     v            |                  2.11BSD
51Tenth Edition     |                      |
52                  |                  2.11BSD rev #366
53               4.3BSD NET/1              |
54                  |                      v
55               4.3BSD Reno
56                  |
57   *---------- 4.3BSD NET/2 -------------------+-------------*
58   |                    |                      |             |
59386BSD 0.0              |                      |             |
60   |                    |                      |             |
61386BSD 0.1 ------------>+                      |           BSDI 1.0
62   |     \              |                  4.4BSD Alpha      |
63   |     386BSD 1.0     |                      |             |
64   |                    |                  4.4BSD            |
65   |                    |                    / |             |
66   |                    |   4.4BSD-Encumbered  |             |
67   |                 NetBSD 0.8                |             |
68   |                    |                      |             |
69FreeBSD 1.0          NetBSD 0.9                |             |
70   |                    |           .----- 4.4BSD Lite --> BSDI 2.0
71FreeBSD 1.1             |          /   /       |             |
72   |                    |         /   /        |           BSDI 2.0.1
73FreeBSD 1.1.5       .---|--------'   /         |             |
74   |               /    |           /      4.4BSD Lite2 -> BSDI 2.1
75FreeBSD 1.1.5.1   /     |          /      /    |    | \      |
76   |             /   NetBSD 1.0 <-'      /     |    |   \    |
77   |            /       |              /       |    |    `-BSDI 3.0
78FreeBSD 2.0 <--'        |         FreeBSD 3.0  |    |        |
79   |                     \               NetBSD 1.3 |        v
80FreeBSD 2.0.5             \                   OpenBSD 2.3
81   |                       \
82   |                        \
83FreeBSD 2.1                  |
84 |   |                    NetBSD 1.1 ------.
85 | FreeBSD 2.1.5             |              \
86 |     |                  NetBSD 1.2         \
87 | FreeBSD 2.1.6             |  \          OpenBSD 2.0
88 |     |                     |   \             |
89 | FreeBSD 2.1.6.1           |    \            |
90 |     |                     |     \           |
91 | FreeBSD 2.1.7             |      |          |
92 |     |                     |  NetBSD 1.2.1   |
93 | FreeBSD 2.1.7.1           |                 |
94 |                           |                 |
95 |                           |                 |
96 *-FreeBSD 2.2               |                 |
97 |        \                  |                 |
98 |     FreeBSD 2.2.1         |                 |
99 |         |                 |                 |
100 |     FreeBSD 2.2.2         |             OpenBSD 2.1
101 |         |              NetBSD 1.3           |
102 |     FreeBSD 2.2.5         |   \             |
103 |         |                 | NetBSD 1.3.1  OpenBSD 2.2
104 |         v                 |    |            |
105 |     FreeBSD 2.2.6         |    |          OpenBSD 2.3
106 |         |                 | NetBSD 1.3.2    |
107 |         v                 |    |            |
108 |     FreeBSD 2.2.7         |    |            |
109 |         |                 |    |            |
110 |         v                 |    |            |
111 |     FreeBSD 2.2.8         |    |            |
112 |                           |    |            |
113 |                           |    |        OpenBSD 2.4
114FreeBSD 3.0                  |    |            |
115 |                           | NetBSD 1.3.3    |
116 *---FreeBSD 3.1             |                 |
117 |       |                   |                 |
118 |   FreeBSD 3.2          NetBSD 1.4       OpenBSD 2.5
119 |       |                   |    |            |
120 |   FreeBSD 3.3             | NetBSD 1.4.1    |
121 |       |                   |             OpenBSD 2.6
122 |   FreeBSD 3.4             |                 |
123 |                           |                 |
124 |                           |                 |
125FreeBSD 4.0-CURRENT       NetBSD -current  OpenBSD -current
126 |                           |                 |
127 v                           v                 v
128
129
130
131Time
132----------------
133
134Time tolerance +/- 6 month, depend on which book/article you read; if
135it was the announcement in Usenet or if it was available as tape.
136
137[44B] McKusick, Marshall Kirk, Keith Bostic, Michael J Karels,
138	and John Quarterman. The Design and Implementation of
139	the 4.4BSD Operating System.
140[DOC] README, COPYRIGHT on tape.
141[QCU] Salus, Peter H. A quarter century of UNIX.
142[U25] Peter H. Salus. Unix at 25.
143[USE] Usenet announcement.
144[KSJ] Michael J. Karels, Carl F. Smith, and William F. Jolitz.
145	Changes in the Kernel in 2.9BSD. Second Berkeley Software
146	Distribution UNIX Version 2.9, July, 1983.
147[KB]  Keith Bostic. BSD2.10 available from Usenix. comp.unix.sources,
148	Volume 11, Info 4, April, 1987.
149[KKK] Mike Karels, Kirk McKusick, and Keith Bostic. tahoe announcement.
150	comp.bugs.4bsd.ucb-fixes, June 15, 1988.
151[SMS] Steven M. Schultz. 2.11BSD, UNIX for the PDP-11.
152[FBD] FreeBSD Project, The.
153[NBD] NetBSD Project, The.
154[OBD] OpenBSD Project, The.
155[dmr] Dennis Ritchie, via E-Mail
156
157
158Multics                 1965
159Unix                    Summer 1969
160				DEC PDP-7
161First   Edition         1971-11-03 [QCU]
162				DEC PDP-11/20, Assembler
163Second  Edition         1972-06-12 [QCU]
164				10 Unix installations
165Third   Edition         1973-02-xx [QCU]
166				Pipes, 16 installations
167Fourth  Edition         1973-11-xx [QCU]
168				rewriting in C effected,
169                                above 30 installations
170Fifth   Edition         1974-06-xx [QCU]
171				above 50 installations
172Sixth   Edition         1975-05-xx [QCU]
173				port to DEC Vax
174Seventh Edition         1979-01-xx [QCU]
175				first portable Unix
176Eight   Edition         1985-02-xx [QCU]
177				VAX 11/750, VAX 11/780 [dmr]
178				descended from 4.1c BSD [dmr]
179				descended from 4.1 BSD [44B]
180			scooping-out and replacement of the character-device 
181			and networking part by the streams mechanism
182
183Ninth   Edition         1986-09-xx [QCU]
184Tenth   Edition         1989-10-xx [QCU]
185
1861BSD                    late 1977
187			1978-03-09 [QCU]
188				PDP-11, Pascal, ex(1)
189				30 free copies of 1BSD sent out
190				35 tapes sold for 50 USD [QCU]
1912BSD                    mid 1978 [QCU]
192				75 2BSD tapes shipped
1932.7.9BSD		?? [SMS]
1942.8BSD			1981-07-xx [KSJ]
195
1962.8.1BSD		1982-01-xx [QCU]
197				set of performance improvements
1982.9BSD			1983-07-xx [KSJ]
1992.9.1BSD                1983-11-xx
2002.9BSD-Seismo		1985-08-xx [SMS]
2012.10BSD			1987-04-xx [KKK]
2022.10.1BSD		1989-01-xx [SMS]
2032.11BSD			1992-02-xx [SMS]
2042.11BSD rev #366	1997-02-xx [SMS]
205
20632V			1978-1[01]-xx [QCU]
2073BSD                    late 1979 [QCU]
208				virtual memory, page replacement,
209                        	demand paging
2104.0BSD                  1980-10-xx
2114.1BSD                  1981-06-xx
2124.1aBSD                 1982-04-xx
213				alpha release, 100 sites, networking [44B]
2144.1bBSD				internal release, fast filesystem [44B]
2154.1cBSD                 late 1982
216				beta release, IPC [44B]
2174.2BSD                  1983-09-xx [QCU]
2184.3BSD                  1986-06-xx [QCU]
219			1986-04-xx [KB]
2204.3BSD Tahoe            1988-06-xx [QCU]
2214.3BSD NET/1            1988-11-xx [QCU]
2224.3BSD Reno             1990-06-xx [QCU], [DOC]
2234.3BSD NET/2            1991-06-xx [QCU]
224386BSD 0.0              1992-02-xx [DOC]
225386BSD 0.1              1992-07-xx [DOC]
2264.4BSD Alpha            1992-07-07
227NetBSD 0.8              1993-04-20 [NBD]
2284.4BSD                  1993-06-01 [USE]
229NetBSD 0.9              1993-08-23 [NBD]
230FreeBSD 1.0		1993-11-xx [FOO]
2314.4BSD Lite             1994-03-01 [USE]
232FreeBSD 1.1		1994-04-xx [FBD]
233FreeBSD 1.1.5.1		1994-07-xx [FBD]
234				supersedes 1.1.5 3 days after release.
235NetBSD 1.0              1994-10-26 [NBD]
236386BSD 1.0              1994-11-12 [USE]
237FreeBSD 2.0		1995-01-xx [FBD]
238FreeBSD 2.0.5		1995-06-xx [FBD]
2394.4BSD Lite Release 2	1995-06-xx [44B]
240				the true final distribution from the CSRG
241NetBSD 1.1              1995-11-26 [NBD]
242FreeBSD 2.1		1995-12-xx [FBD]
243FreeBSD 2.1.5		1996-08-xx [FBD]
244NetBSD 1.2              1996-10-04 [NBD]
245OpenBSD 2.0             1996-10-18 [OBD]
246FreeBSD 2.1.6		1996-12-xx [FBD]
247FreeBSD 2.1.7		1997-02-xx [FBD]
248FreeBSD 2.2.1		1997-04-xx [FBD]
249NetBSD 1.2.1            1997-05-20 [NBD] (patch release)
250OpenBSD 2.1             1997-06-01 [OBD]
251FreeBSD 2.2.2		1997-06-xx [FBD]
252NetBSD 1.3              1998-01-04 [NBD]
253FreeBSD 2.2.5		1997-11-xx [FBD]
254OpenBSD 2.2             1997-12-01 [OBD]
255FreeBSD 2.2.6		1998-03-xx [FBD]
256NetBSD 1.3.1            1998-03-09 [NBD] (patch release)
257OpenBSD 2.3             1998-05-19 [OBD]
258NetBSD 1.3.2            1998-05-29 [NBD] (patch release)
259FreeBSD 2.2.7		1998-07-xx [FBD]
260FreeBSD 3.0		1998-10-16 [FBD]
261				FreeBSD-3.0 is a snapshot from -current, 
262				while 3.1 and 3.2 are from 3.x-stable which 
263				was branched quite some time after 3.0-release
264FreeBSD 2.2.8           1998-11-29 [FBD]
265OpenBSD 2.4             1998-12-01 [OBD]
266NetBSD 1.3.3            1998-12-23 [NBD] (patch release)
267FreeBSD 3.1		1999-02-15 [FBD]
268NetBSD 1.4              1999-05-12 [NBD]
269FreeBSD 3.2             1999-05-17 [FBD]
270OpenBSD 2.5             1999-05-19 [OBD]
271NetBSD 1.4.1            1999-08-26 [NBD] (patch release)
272FreeBSD 3.3             1999-09-17 [FBD]
273OpenBSD 2.6             1999-12-01 [OBD]
274FreeBSD 3.4             1999-12-20 [FBD]
275
276
277Bibliography
278------------------------
279
280Leffler, Samuel J., Marshall Kirk McKusick, Michael J Karels and John
281Quarterman. The Design and Implementation of the 4.3BSD UNIX Operating
282System. Reading, Mass. Addison-Wesley, 1989. ISBN 0-201-06196-1
283
284Salus, Peter H. A quarter century of UNIX. Addison-Wesley Publishing
285Company, Inc., 1994. ISBN 0-201-54777-5
286
287McKusick, Marshall Kirk, Keith Bostic, Michael J Karels, and John
288Quarterman. The Design and Implementation of the 4.4BSD Operating
289System. Reading, Mass. Addison-Wesley, 1996. ISBN 0-201-54979-4
290
291Doug McIlroy. Research Unix Reader.
292
293Michael G. Brown. The Role of BSD in the Development of Unix.
294Presented to the Tasmanian Unix Special Interest Group of the
295Australian Computer Society, Hobart, August 1993.
296URL: http://www.dpac.tas.gov.au/~mgb/papers/bsdrole.html
297
298Peter H. Salus. Unix at 25. Byte Magazin, October 1994.
299URL: http://www.byte.com/art/9410/sec8/art3.htm
300
301Andreas Klemm, Lars K�ller. If you're going to San Francisco ...
302Die freien BSD-Varianten von Unix. c't April 1997, page 368ff.
303URL: http://www.heise.de
304
305BSD Release Announcements collection.
306URL: http://www.de.FreeBSD.ORG/de/ftp/releases/
307
308BSD Hypertext Man Pages
309http://www.freebsd.org/cgi/man.cgi
310
311Acknowledgments
312---------------
313
314Josh Gilliam for suggestions, bugfixes, and finding very old
315original BSD announcements from Usenet or tapes.
316
317Steven M. Schultz for providing 2.8BSD, 2.10BSD, 2.11BSD manual pages.
318
319--
320Copyright (c) 1997-1999 Wolfram Schneider <wosch@FreeBSD.ORG>
321URL: ftp://ftp.freebsd.org/pub/FreeBSD/FreeBSD-current/src/share/misc/bsd-family-tree
322
323$FreeBSD: head/share/misc/bsd-family-tree 57000 2000-02-05 14:02:34Z wosch $
324