bsd-family-tree revision 59769 
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              |                      |             |
58   |                    |                      |             |
59386BSD 0.1 ------------>+                      |           BSDI 1.0
60   |     \              |                  4.4BSD Alpha      |
61   |     386BSD 1.0     |                      |             |
62   |                    |                  4.4BSD            |
63   |                    |                    / |             |
64   |                    |   4.4BSD-Encumbered  |             |
65   |                 NetBSD 0.8                |             |
66   |                    |                      |             |
67FreeBSD 1.0          NetBSD 0.9                |             |
68   |                    |           .----- 4.4BSD Lite --> BSDI 2.0
69FreeBSD 1.1             |          /   /       |             |
70   |                    |         /   /        |           BSDI 2.0.1
71FreeBSD 1.1.5       .---|--------'   /         |             |
72   |               /    |           /      4.4BSD Lite2 -> BSDI 2.1
73FreeBSD 1.1.5.1   /     |          /      /    |    | \      |
74   |             /   NetBSD 1.0 <-'      /     |    |   \    |
75   |            /       |              /       |    |    `-BSDI 3.0
76FreeBSD 2.0 <--'        |         FreeBSD 3.0  |    |        |
77   |                     \               NetBSD 1.3 |        v
78FreeBSD 2.0.5             \                   OpenBSD 2.3
79   |                       \
80   |                        \
81FreeBSD 2.1                  |
82 |   |                    NetBSD 1.1 ------.
83 | FreeBSD 2.1.5             |              \
84 |     |                  NetBSD 1.2         \
85 | FreeBSD 2.1.6             |  \          OpenBSD 2.0
86 |     |                     |   \             |
87 | FreeBSD 2.1.6.1           |    \            |
88 |     |                     |     \           |
89 | FreeBSD 2.1.7             |      |          |
90 |     |                     |  NetBSD 1.2.1   |
91 | FreeBSD 2.1.7.1           |                 |
92 |                           |                 |
93 |                           |                 |
94 *-FreeBSD 2.2               |                 |
95 |        \                  |                 |
96 |     FreeBSD 2.2.1         |                 |
97 |         |                 |                 |
98 |     FreeBSD 2.2.2         |             OpenBSD 2.1
99 |         |              NetBSD 1.3           |
100 |     FreeBSD 2.2.5         |   \             |
101 |         |                 | NetBSD 1.3.1  OpenBSD 2.2
102 |         v                 |    |            |
103 |     FreeBSD 2.2.6         |    |          OpenBSD 2.3
104 |         |                 | NetBSD 1.3.2    |
105 |         v                 |    |            |
106 |     FreeBSD 2.2.7         |    |            |
107 |         |                 |    |            |
108 |         v                 |    |            |
109 |     FreeBSD 2.2.8         |    |            |
110 |                           |    |            |
111 |                           |    |        OpenBSD 2.4
112FreeBSD 3.0                  |    |            |
113 |                           | NetBSD 1.3.3    |
114 *---FreeBSD 3.1             |                 |
115 |       |                   |                 |
116 |   FreeBSD 3.2          NetBSD 1.4       OpenBSD 2.5
117 |       |                   |    |            |
118 |   FreeBSD 3.3             | NetBSD 1.4.1    |
119 |       |                   |    |        OpenBSD 2.6
120 |   FreeBSD 3.4             |    |            |
121 |           |               |    |            |
122FreeBSD 4.0  |               | NetBSD 1.4.2    |
123 |           |               |                 |
124 |           |            NetBSD -current  OpenBSD -current
125 |   FreeBSD 3.5             |                 |
126 |                           v                 v
127 *---FreeBSD 4.1
128 |        
129FreeBSD 5.0-current
130 |
131 v
132
133
134Time
135----------------
136
137Time tolerance +/- 6 month, depend on which book/article you read; if
138it was the announcement in Usenet or if it was available as tape.
139
140[44B] McKusick, Marshall Kirk, Keith Bostic, Michael J Karels,
141	and John Quarterman. The Design and Implementation of
142	the 4.4BSD Operating System.
143[DOC] README, COPYRIGHT on tape.
144[QCU] Salus, Peter H. A quarter century of UNIX.
145[U25] Peter H. Salus. Unix at 25.
146[USE] Usenet announcement.
147[KSJ] Michael J. Karels, Carl F. Smith, and William F. Jolitz.
148	Changes in the Kernel in 2.9BSD. Second Berkeley Software
149	Distribution UNIX Version 2.9, July, 1983.
150[KB]  Keith Bostic. BSD2.10 available from Usenix. comp.unix.sources,
151	Volume 11, Info 4, April, 1987.
152[KKK] Mike Karels, Kirk McKusick, and Keith Bostic. tahoe announcement.
153	comp.bugs.4bsd.ucb-fixes, June 15, 1988.
154[SMS] Steven M. Schultz. 2.11BSD, UNIX for the PDP-11.
155[FBD] FreeBSD Project, The.
156[NBD] NetBSD Project, The.
157[OBD] OpenBSD Project, The.
158[dmr] Dennis Ritchie, via E-Mail
159
160
161Multics                 1965
162UNIX                    Summer 1969
163				DEC PDP-7
164First   Edition         1971-11-03 [QCU]
165				DEC PDP-11/20, Assembler
166Second  Edition         1972-06-12 [QCU]
167				10 UNIX installations
168Third   Edition         1973-02-xx [QCU]
169				Pipes, 16 installations
170Fourth  Edition         1973-11-xx [QCU]
171				rewriting in C effected,
172                                above 30 installations
173Fifth   Edition         1974-06-xx [QCU]
174				above 50 installations
175Sixth   Edition         1975-05-xx [QCU]
176				port to DEC Vax
177Seventh Edition         1979-01-xx [QCU]
178				first portable UNIX
179Eighth  Edition         1985-02-xx [QCU]
180				VAX 11/750, VAX 11/780 [dmr]
181				descended from 4.1c BSD [dmr]
182				descended from 4.1 BSD [44B]
183			scooping-out and replacement of the character-device 
184			and networking part by the streams mechanism
185
186Ninth   Edition         1986-09-xx [QCU]
187Tenth   Edition         1989-10-xx [QCU]
188
1891BSD                    late 1977
190			1978-03-09 [QCU]
191				PDP-11, Pascal, ex(1)
192				30 free copies of 1BSD sent out
193				35 tapes sold for 50 USD [QCU]
1942BSD                    mid 1978 [QCU]
195				75 2BSD tapes shipped
1962.7.9BSD		?? [SMS]
1972.8BSD			1981-07-xx [KSJ]
198
1992.8.1BSD		1982-01-xx [QCU]
200				set of performance improvements
2012.9BSD			1983-07-xx [KSJ]
2022.9.1BSD                1983-11-xx
2032.9BSD-Seismo		1985-08-xx [SMS]
2042.10BSD			1987-04-xx [KKK]
2052.10.1BSD		1989-01-xx [SMS]
2062.11BSD			1992-02-xx [SMS]
2072.11BSD rev #430	1999-12-13 [SMS]
208
20932V			1978-1[01]-xx [QCU]
2103BSD                    late 1979 [QCU]
211				virtual memory, page replacement,
212                        	demand paging
2134.0BSD                  1980-10-xx
2144.1BSD                  1981-06-xx
2154.1aBSD                 1982-04-xx
216				alpha release, 100 sites, networking [44B]
2174.1bBSD				internal release, fast filesystem [44B]
2184.1cBSD                 late 1982
219				beta release, IPC [44B]
2204.2BSD                  1983-09-xx [QCU]
2214.3BSD                  1986-06-xx [QCU]
222			1986-04-xx [KB]
2234.3BSD Tahoe            1988-06-xx [QCU]
2244.3BSD NET/1            1988-11-xx [QCU]
2254.3BSD Reno             1990-06-xx [QCU], [DOC]
2264.3BSD NET/2            1991-06-xx [QCU]
227386BSD 0.0              1992-02-xx [DOC]
228386BSD 0.1              1992-07-xx [DOC]
2294.4BSD Alpha            1992-07-07
230NetBSD 0.8              1993-04-20 [NBD]
2314.4BSD                  1993-06-01 [USE]
232NetBSD 0.9              1993-08-23 [NBD]
233FreeBSD 1.0		1993-11-xx [FOO]
2344.4BSD Lite             1994-03-01 [USE]
235FreeBSD 1.1		1994-04-xx [FBD]
236FreeBSD 1.1.5.1		1994-07-xx [FBD]
237				supersedes 1.1.5 3 days after release.
238NetBSD 1.0              1994-10-26 [NBD]
239386BSD 1.0              1994-11-12 [USE]
240FreeBSD 2.0		1995-01-xx [FBD]
241FreeBSD 2.0.5		1995-06-xx [FBD]
2424.4BSD Lite Release 2	1995-06-xx [44B]
243				the true final distribution from the CSRG
244NetBSD 1.1              1995-11-26 [NBD]
245FreeBSD 2.1		1995-12-xx [FBD]
246FreeBSD 2.1.5		1996-08-xx [FBD]
247NetBSD 1.2              1996-10-04 [NBD]
248OpenBSD 2.0             1996-10-18 [OBD]
249FreeBSD 2.1.6		1996-12-xx [FBD]
250FreeBSD 2.1.7		1997-02-xx [FBD]
251FreeBSD 2.2.1		1997-04-xx [FBD]
252NetBSD 1.2.1            1997-05-20 [NBD] (patch release)
253OpenBSD 2.1             1997-06-01 [OBD]
254FreeBSD 2.2.2		1997-06-xx [FBD]
255NetBSD 1.3              1998-01-04 [NBD]
256FreeBSD 2.2.5		1997-11-xx [FBD]
257OpenBSD 2.2             1997-12-01 [OBD]
258FreeBSD 2.2.6		1998-03-xx [FBD]
259NetBSD 1.3.1            1998-03-09 [NBD] (patch release)
260OpenBSD 2.3             1998-05-19 [OBD]
261NetBSD 1.3.2            1998-05-29 [NBD] (patch release)
262FreeBSD 2.2.7		1998-07-xx [FBD]
263FreeBSD 3.0		1998-10-16 [FBD]
264				FreeBSD-3.0 is a snapshot from -current, 
265				while 3.1 and 3.2 are from 3.x-stable which 
266				was branched quite some time after 3.0-release
267FreeBSD 2.2.8           1998-11-29 [FBD]
268OpenBSD 2.4             1998-12-01 [OBD]
269NetBSD 1.3.3            1998-12-23 [NBD] (patch release)
270FreeBSD 3.1		1999-02-15 [FBD]
271NetBSD 1.4              1999-05-12 [NBD]
272FreeBSD 3.2             1999-05-17 [FBD]
273OpenBSD 2.5             1999-05-19 [OBD]
274NetBSD 1.4.1            1999-08-26 [NBD] (patch release)
275FreeBSD 3.3             1999-09-17 [FBD]
276OpenBSD 2.6             1999-12-01 [OBD]
277FreeBSD 3.4             1999-12-20 [FBD]
278FreeBSD 4.0             2000-03-13 [FBD]
279NetBSD 1.4.2            2000-03-19 [NBD] (patch release)
280
281
282Bibliography
283------------------------
284
285Leffler, Samuel J., Marshall Kirk McKusick, Michael J Karels and John
286Quarterman. The Design and Implementation of the 4.3BSD UNIX Operating
287System. Reading, Mass. Addison-Wesley, 1989. ISBN 0-201-06196-1
288
289Salus, Peter H. A quarter century of UNIX. Addison-Wesley Publishing
290Company, Inc., 1994. ISBN 0-201-54777-5
291
292McKusick, Marshall Kirk, Keith Bostic, Michael J Karels, and John
293Quarterman. The Design and Implementation of the 4.4BSD Operating
294System. Reading, Mass. Addison-Wesley, 1996. ISBN 0-201-54979-4
295
296Doug McIlroy. Research Unix Reader.
297
298Michael G. Brown. The Role of BSD in the Development of Unix.
299Presented to the Tasmanian Unix Special Interest Group of the
300Australian Computer Society, Hobart, August 1993.
301
302Peter H. Salus. Unix at 25. Byte Magazine, October 1994.
303URL: http://www.byte.com/art/9410/sec8/art3.htm
304
305Andreas Klemm, Lars K�ller. If you're going to San Francisco ...
306Die freien BSD-Varianten von Unix. c't April 1997, page 368ff.
307
308BSD Release Announcements collection.
309URL: http://www.de.FreeBSD.org/de/ftp/releases/
310
311BSD Hypertext Man Pages
312http://www.FreeBSD.org/cgi/man.cgi
313
314UNIX history graphing project
315http://minnie.cs.adfa.edu.au/Unix_History/index.html
316
317Acknowledgments
318---------------
319
320Josh Gilliam for suggestions, bug fixes, and finding very old
321original BSD announcements from Usenet or tapes.
322
323Steven M. Schultz for providing 2.8BSD, 2.10BSD, 2.11BSD manual pages.
324
325--
326Copyright (c) 1997-1999 Wolfram Schneider <wosch@FreeBSD.ORG>
327URL: ftp://ftp.freebsd.org/pub/FreeBSD/FreeBSD-current/src/share/misc/bsd-family-tree
328
329$FreeBSD: head/share/misc/bsd-family-tree 59769 2000-04-30 01:17:34Z grog $
330
331