xref: /freebsd/share/misc/bsd-family-tree (revision 39a7471508a20f2b15ca3bee3e532de069483811)

The UNIX system family tree: Research and BSD
---------------------------------------------

First Edition (V1)
     |
Second Edition (V2)
     |
Third Edition (V3)
     |
Fourth Edition (V4)
     |
Fifth Edition (V5)
     |
Sixth Edition (V6) -----*
       \                |
        \               |
         \              |
Seventh Edition (V7)    |
            \           |
             \        1BSD
             32V        |
               \      2BSD---------------*
                \    /                   |
                 \  /                    |
                  \/                     |
                 3BSD                    |
                  |                      |
               4.0BSD               2.7.9BSD
                  |                      |
               4.1BSD --------------> 2.8BSD
                  |                      |
              4.1aBSD -----------\       |
                  |                \     |
              4.1bBSD                \   |
                  |                    \ |
      *------ 4.1cBSD --------------> 2.9BSD
     /            |                      |
Eighth Edition    |                   2.9BSD-Seismo
     |            |                      |
     +----<--- 4.2BSD               2.9.1BSD
     |            |                      |
     +----<--- 4.3BSD -------------> 2.10BSD
     |            |               /      |
Ninth Edition     |              / 2.10.1BSD
     |         4.3BSD Tahoe-----+        |
     |            |              \       |
     |            |                \     |
     v            |                  2.11BSD
Tenth Edition     |                      |
                  |                  2.11BSD rev #430
               4.3BSD NET/1              |
                  |                      v
               4.3BSD Reno
                  |
   *---------- 4.3BSD NET/2 -------------------+-------------*
   |                    |                      |             |
386BSD 0.0              |                      |           BSD/386 ALPHA
   |                    |                      |             |
386BSD 0.1 ------------>+                      |           BSD/386 0.3.[13]
   |     \              |                  4.4BSD Alpha      |
   |     386BSD 1.0     |                      |           BSD/386 0.9.[34]
   |                    |                  4.4BSD            |
   |                    |                    / |             |
   |                    |   4.4BSD-Encumbered  |             |
   |                 NetBSD 0.8                |           BSD/386 1.0
   |                    |                      |             |
FreeBSD 1.0          NetBSD 0.9                |           BSD/386 1.1
   |                    |           .----- 4.4BSD Lite       |
FreeBSD 1.1             |          /   /       |     \       |
   |                    |         /   /        |      \      |
FreeBSD 1.1.5       .---|--------'   /         |       \     |
   |               /    |           /          |        \    |
FreeBSD 1.1.5.1   /     |          /           |         \   |
   |             /   NetBSD 1.0 <-'            |          \  |
   |            /       |                      |           \ |
FreeBSD 2.0 <--'        |                      |           BSD/OS 2.0
   |                     \                     |             |
FreeBSD 2.0.5             \                    |           BSD/OS 2.0.1
   |                 .-----\------------- 4.4BSD Lite2       |
   |                 |      \             |  |   |   |       |
   |                 | .-----|------Rhapsody |   |   |       |
   |                 | |     |        NetBSD 1.3 |   |       |
   |                 | |     |           OpenBSD 2.3 |       |
   |                 | |     |                BSD/OS 3.0     |
FreeBSD 2.1          | |     |                               |
 |   |               | |  NetBSD 1.1 ------.               BSD/OS 2.1
 | FreeBSD 2.1.5     | |     |              \                |
 |     |             | |  NetBSD 1.2         \             BSD/OS 3.0
 | FreeBSD 2.1.6     | |     |  \          OpenBSD 2.0       |
 |     |             | |     |   \             |             |
 | FreeBSD 2.1.6.1   | |     |    \            |             |
 |     |             | |     |     \           |             |
 | FreeBSD 2.1.7     | |     |      |          |             |
 |     |             | |     |  NetBSD 1.2.1   |             |
 | FreeBSD 2.1.7.1   | |     |                 |             |
 |                   | |     |                 |             |
 |                   | |     |                 |             |
 *-FreeBSD 2.2       | |     |                 |             |
 |        \          | |     |                 |             |
 |     FreeBSD 2.2.1 | |     |                 |             |
 |         |         | |     |                 |             |
 |     FreeBSD 2.2.2 | |     |             OpenBSD 2.1       |
 |         |         | |     |                 |             |
 |     FreeBSD 2.2.5 | |     |                 |             |
 |         |         | |     |             OpenBSD 2.2       |
 |         |         | |  NetBSD 1.3           |             |
 |     FreeBSD 2.2.6 | |     |    |            |             |
 |         |         | |     | NetBSD 1.3.1    |           BSD/OS 3.1
 |         |         | |     |    |        OpenBSD 2.3       |
 |         |         | |     | NetBSD 1.3.2    |             |
 |     FreeBSD 2.2.7 | |     |    |            |             |
 |         |         | |     |    |            |           BSD/OS 4.0
 |         v         | |     |    |            |             |
 |     FreeBSD 2.2.8 | |     |    |            |             |
 |                   | |     |    |        OpenBSD 2.4       |
FreeBSD 3.0 <--------* |     |    v            |             |
 |                     |     | NetBSD 1.3.3    |             |
 *---FreeBSD 3.1       |     |                 |             |
 |       |             |     |                 |           BSD/OS 4.0.1
 |   FreeBSD 3.2----*  |  NetBSD 1.4       OpenBSD 2.5       |
 |       |          |  |  |  |    |            |             |
 |       |          |  |  |  |    |            |             |
 |       |          |  |  |  |    |            |             |
 |   FreeBSD 3.3    |  |  |  | NetBSD 1.4.1    |             |
 |       |          |  |  |  |    |        OpenBSD 2.6       |
 |   FreeBSD 3.4    |  |  |  |    |            |             |
 |           |      |  |  |  |    |            |           BSD/OS 4.1
FreeBSD 4.0  |      |  |  |  | NetBSD 1.4.2    |             |
 |           |      |  |  |  |    |            |             |
 |           |      |  |  |  |    |            |             |
 |   FreeBSD 3.5    |  |  |  |    |        OpenBSD 2.7       |
 |           |      |  |  |  |    |            |             |
 |   FreeBSD 3.5.1  |  |  |  |    |            |             |
 |                  |  |  |  |    |            |             |
 *---FreeBSD 4.1    |  |  |  |    |            |             |
 |      |           |  | (?) |    |            |             |
 |   FreeBSD 4.1.1  |  |  /  |    |            |             |
 |      |           |  | /   |    |            |             |
 |   FreeBSD 4.2   Darwin/   | NetBSD 1.4.3    |             |
 |      |         Mac OS X   |             OpenBSD 2.8     BSD/OS 4.2
 |      |             |      |                 |             |
 |      |             |      |                 |             |
 |      |           10.0  NetBSD 1.5           |             |
 |   FreeBSD 4.3      |      |    |            |             |
 |      |             |      |    |        OpenBSD 2.9       |
 |      |             |      | NetBSD 1.5.1    |             |
 |      |             |      |    |            |             |
 |   FreeBSD 4.4-.    |      | NetBSD 1.5.2    |             |
 |      |        | Mac OS X  |    |            |             |
 |      |        |   10.1    |    |        OpenBSD 3.0       |
 |   FreeBSD 4.5 |    |      |    |            |             |
 |      |         \   |      |    |            |           BSD/OS 4.3
 |   FreeBSD 4.6   \  |      |    |        OpenBSD 3.1       |
 |      |           \ |      | NetBSD 1.5.3    |       	     |
 |   FreeBSD 4.6.2 Mac OS X  |                 |             |
 |      |            10.2    |                 |             |
 |   FreeBSD 4.7      |      |                 |             |
 |      |             |   NetBSD 1.6       OpenBSD 3.2       |
 |   FreeBSD 4.8      |      |    |            |             |
 |      |             |      | NetBSD 1.6.1    |             |
 |      |--------.    |      |    |        OpenBSD 3.3     BSD/OS 5.0
 |      |         \   |      |    |            |             |
 |   FreeBSD 4.9   |  |      |    |        OpenBSD 3.4     BSD/OS 5.1 ISE
 |      |          |  |      |    |            |
 |      |          |  |      | NetBSD 1.6.2    |
 |      |          |  |      |    |            |
 |      |          |  |      |    |        OpenBSD 3.5
 |      |          |  |      |    v            |
 |   FreeBSD 4.10  |  |      |                 |
 |      |          |  |      |                 |
 |   FreeBSD 4.11  |  |      |                 |
 |                 |  |      |                 |
 |                  `-|------|-----------------|---------------------.
 |                    |      |                 |                      \
FreeBSD 5.0           |      |                 |                       |
 |                    |      |                 |                       |
FreeBSD 5.1           |      |                 |                 DragonFly 1.0
 |          \         |      |                 |                       |
 |           ----- Mac OS X  |                 |                       |
 |                   10.3    |                 |                       |
FreeBSD 5.2           |      |                 |                       |
 |      |             |      |                 |                       |
 |   FreeBSD 5.2.1    |      |                 |                       |
 |                    |      |                 |                       |
 *-------FreeBSD 5.3  |      |                 |                       |
 |           |        |      |             OpenBSD 3.6                 |
 |           |        |   NetBSD 2.0           |                       |
 |           |        |      | |  |            |                DragonFly 1.2.0
 |           |     Mac OS X  | | NetBSD 2.0.2  |                       |
 |           |       10.4    | |  |            |                       |
 |       FreeBSD 5.4  |      | |  |            |                       |
 |           |        |      | |  |        OpenBSD 3.7                 |
 |           |        |      | | NetBSD 2.0.3  |                       |
 |           |        |      | |  |            |                       |
 *--FreeBSD  |        |      | |  v        OpenBSD 3.8                 |
 |    6.0    |        |      | |               |                       |
 |     |     |        |      |  \              |                       |
 |     |     |        |      | NetBSD 2.1      |                       |
 |     |     |        |      |                 |                       |
 |     |     |        |   NetBSD 3.0           |                       |
 |     |     |        |      | |  |            |                DragonFly 1.4.0
 |     |     |        |      | |  |        OpenBSD 3.9                 |
 |  FreeBSD  |        |      | |  |            |                       |
 |    6.1    |        |      | |  |            |                       |
 |     |  FreeBSD 5.5 |      | |  |            |                       |
 |     |              |      | | NetBSD 3.0.1  |                DragonFly 1.6.0
 |     |              |      | |  |            |                       |
 |     |              |      | |  |        OpenBSD 4.0                 |
 |     |              |      | | NetBSD 3.0.2  |                       |
 |     |              |      | NetBSD 3.1      |                       |
 | FreeBSD 6.2        |      |                 |                       |
 |     |              |      |                 |                DragonFly 1.8.0
 |     |              |      |             OpenBSD 4.1                 |
 |     |              |      |                 |                DragonFly 1.10.0
 |     |           Mac OS X  |                 |                       |
 |     |             10.5    |                 |                       |
 |     |              |      |             OpenBSD 4.2                 |
 |     |              |   NetBSD 4.0           |                       |
 | FreeBSD 6.3        |      |                 |                       |
 |            \       |      |                 |                       |
 *--FreeBSD    |      |      |                 |                DragonFly 1.12.0
 |    7.0      |      |      |                 |                       |
 |     |       |      |      |             OpenBSD 4.3                 |
 |     V       |      |      |                 |                DragonFly 2.0.0
 |          FreeBSD   |      |             OpenBSD 4.4                 |
 |            6.4     |      |                 |                       |
 |                    |      |                 |                       |
FreeBSD 8 -current    |  NetBSD -current  OpenBSD -current             |
 |                    |      |                 |                       |
 v                    v      v                 v                       v

Time
----------------

Time tolerance +/- 6 months, depending on which book/article you read; if it
was the announcement in Usenet or if it was available as tape.

[44B] McKusick, Marshall Kirk, Keith Bostic, Michael J Karels,
	and John Quarterman. The Design and Implementation of
	the 4.4BSD Operating System.
[APL] Apple website [http://www.apple.com/macosx/]
[BSDI] Berkeley Software Design, Inc.
[DFB] DragonFlyBSD Project, The.
[DOC] README, COPYRIGHT on tape.
[FBD] FreeBSD Project, The.
[KB]  Keith Bostic. BSD2.10 available from Usenix. comp.unix.sources,
	Volume 11, Info 4, April, 1987.
[KKK] Mike Karels, Kirk McKusick, and Keith Bostic. tahoe announcement.
	comp.bugs.4bsd.ucb-fixes, June 15, 1988.
[KSJ] Michael J. Karels, Carl F. Smith, and William F. Jolitz.
	Changes in the Kernel in 2.9BSD. Second Berkeley Software
	Distribution UNIX Version 2.9, July, 1983.
[NBD] NetBSD Project, The.
[OBD] OpenBSD Project, The.
[QCU] Salus, Peter H. A quarter century of UNIX.
[SMS] Steven M. Schultz. 2.11BSD, UNIX for the PDP-11.
[USE] Usenet announcement.
[WRS] Wind River Systems, Inc.
[dmr] Dennis Ritchie, via E-Mail

Multics                 1965
UNIX                    Summer 1969
				DEC PDP-7
First   Edition         1971-11-03 [QCU]
				DEC PDP-11/20, Assembler
Second  Edition         1972-06-12 [QCU]
				10 UNIX installations
Third   Edition         1973-02-xx [QCU]
				Pipes, 16 installations
Fourth  Edition         1973-11-xx [QCU]
				rewriting in C effected,
                                above 30 installations
Fifth   Edition         1974-06-xx [QCU]
				above 50 installations
Sixth   Edition         1975-05-xx [QCU]
				port to DEC Vax
Seventh Edition         1979-01-xx [QCU]
				first portable UNIX
Eighth  Edition         1985-02-xx [QCU]
				VAX 11/750, VAX 11/780 [dmr]
				descended from 4.1c BSD [dmr]
				descended from 4.1 BSD [44B]
			scooping-out and replacement of the character-device
			and networking part by the streams mechanism

Ninth   Edition         1986-09-xx [QCU]
Tenth   Edition         1989-10-xx [QCU]

1BSD                    late 1977
			1978-03-09 [QCU]
				PDP-11, Pascal, ex(1)
				30 free copies of 1BSD sent out
				35 tapes sold for 50 USD [QCU]
2BSD                    mid 1978 [QCU]
				75 2BSD tapes shipped
2.7.9BSD		?? [SMS]
2.8BSD			1981-07-xx [KSJ]

2.8.1BSD		1982-01-xx [QCU]
				set of performance improvements
2.9BSD			1983-07-xx [KSJ]
2.9.1BSD                1983-11-xx
2.9BSD-Seismo		1985-08-xx [SMS]
2.10BSD			1987-04-xx [KKK]
2.10.1BSD		1989-01-xx [SMS]
2.11BSD			1992-02-xx [SMS]
2.11BSD rev #430	1999-12-13 [SMS]

32V			1978-1[01]-xx [QCU]
3BSD                    late 1979 [QCU]
				virtual memory, page replacement,
                        	demand paging
4.0BSD                  1980-10-xx
4.1BSD                  1981-07-08 [DOC]
4.1aBSD                 1982-04-xx
				alpha release, 100 sites, networking [44B]
4.1bBSD				internal release, fast filesystem [44B]
4.1cBSD                 late 1982
				beta release, IPC [44B]
4.2BSD                  1983-09-xx [QCU]
                        1983-08-03 [DOC]
4.3BSD                  1986-06-xx [QCU]
			1986-04-05 [KB], [DOC]
4.3BSD Tahoe            1988-06-15 [QCU], [DOC]
4.3BSD NET/1            1988-11-xx [QCU]
                        1989-01-01 [DOC]
4.3BSD Reno             1990-06-29 [QCU], [DOC]
4.3BSD NET/2            1991-06-28 [QCU], [DOC]

BSD/386 ALPHA		1991-12-xx [BSDI]
				first code released to people outside BSDI
386BSD 0.0              1992-02-xx [DOC]
BSD/386 0.3.1	        1992-04-xx [BSDI] first ext. beta; B customers
BSD/386 0.3.3		1992-06-xx [BSDI] first CDROM version
386BSD 0.1              1992-07-28 [DOC]
4.4BSD Alpha            1992-07-07
BSD/386 0.9.3		1992-10-xx [BSDI]
				first external gamma; G customers
BSD/386 0.9.4		1992-12-xx [BSDI]
				would have been 1.0 except for request
				for preliminary injunction
BSD/386 1.0 		1993-03-xx [BSDI]
				injunction denied; first official release
NetBSD 0.8              1993-04-20 [NBD]
4.4BSD                  1993-06-01 [USE]
NetBSD 0.9              1993-08-23 [NBD]
FreeBSD 1.0		1993-11-01 [FBD]
FreeBSD 1.0.2		1993-11-14 [FBD]
				supersedes 1.0 13 days after release.
BSD/386 1.1		1994-02-xx [BSDI]
4.4BSD Lite             1994-03-01 [USE]
FreeBSD 1.1		1994-05-07 [FBD]
FreeBSD 1.1.5		1994-06-30 [FBD]
FreeBSD 1.1.5.1		1994-07-05 [FBD]
				supersedes 1.1.5 5 days after release.
NetBSD 1.0              1994-10-26 [NBD]
386BSD 1.0              1994-11-12 [USE]
FreeBSD 2.0		1994-11-23 [FBD]
BSD/OS 2.0		1995-01-xx [BSDI] 4.4 lite based
FreeBSD 2.0.5		1995-06-10 [FBD]
BSD/OS 2.0.1		1995-06-xx [BSDI]
4.4BSD Lite Release 2	1995-06-xx [44B]
				the true final distribution from the CSRG
FreeBSD 2.1.0		1995-11-19 [FBD]
NetBSD 1.1              1995-11-26 [NBD]
BSD/OS 2.1		1996-01-xx [BSDI]
FreeBSD 2.1.5		1996-07-14 [FBD]
NetBSD 1.2              1996-10-04 [NBD]
OpenBSD 2.0             1996-10-18 [OBD]
FreeBSD 2.1.6		1996-11-16 [FBD]
FreeBSD 2.1.6.1		1996-11-25 [FBD] (sendmail security release)
Rhapsody		1997-xx-xx
FreeBSD 2.1.7		1997-02-20 [FBD]
BSD/OS 3.0		1997-02-xx [BSDI] 4.4 lite2 based
FreeBSD 2.2.0		1997-03-16 [FBD]
FreeBSD 2.2.1		1997-03-25 [FBD]
FreeBSD 2.2.2		1997-05-16 [FBD]
NetBSD 1.2.1            1997-05-20 [NBD] (patch release)
OpenBSD 2.1             1997-06-01 [OBD]
FreeBSD 2.2.5		1997-10-22 [FBD]
OpenBSD 2.2             1997-12-01 [OBD]
NetBSD 1.3              1998-01-04 [NBD]
FreeBSD 2.2.6		1998-03-25 [FBD]
NetBSD 1.3.1            1998-03-09 [NBD] (patch release)
BSD/OS 3.1		1998-03-xx [BSDI]
OpenBSD 2.3             1998-05-19 [OBD]
NetBSD 1.3.2            1998-05-29 [NBD] (patch release)
FreeBSD 2.2.7		1998-07-22 [FBD]
BSD/OS 4.0		1998-08-xx [BSDI]
				2-lock MP support, ELF executables
FreeBSD 3.0		1998-10-16 [FBD]
				FreeBSD-3.0 is a snapshot from -current,
				while 3.1 and 3.2 are from 3.x-stable which
				was branched quite some time after 3.0-release
FreeBSD 2.2.8           1998-11-29 [FBD]
OpenBSD 2.4             1998-12-01 [OBD]
NetBSD 1.3.3            1998-12-23 [NBD] (patch release)
FreeBSD 3.1		1999-02-15 [FBD]
BSD/OS 4.0.1		1999-03-xx [BSDI]
NetBSD 1.4              1999-05-12 [NBD]
FreeBSD 3.2             1999-05-17 [FBD]
OpenBSD 2.5             1999-05-19 [OBD]
NetBSD 1.4.1            1999-08-26 [NBD] (patch release)
FreeBSD 3.3             1999-09-17 [FBD]
OpenBSD 2.6             1999-12-01 [OBD]
FreeBSD 3.4             1999-12-20 [FBD]
BSD/OS 4.1		1999-12-xx [BSDI]
FreeBSD 4.0             2000-03-13 [FBD]
NetBSD 1.4.2            2000-03-19 [NBD] (patch release)
OpenBSD 2.7             2000-06-15 [OBD]
FreeBSD 3.5		2000-06-24 [FBD]
FreeBSD 4.1		2000-07-27 [FBD]
FreeBSD 3.5.1		2000-07-28 [FBD]
FreeBSD 4.1.1		2000-09-25 [FBD] (a network-only patch release)
FreeBSD 4.2  		2000-11-21 [FBD]
NetBSD 1.4.3		2000-11-25 [NBD] (patch release)
BSD/OS 4.2		2000-11-29 [BSDI]
OpenBSD 2.8		2000-12-01 [OBD]
NetBSD 1.5              2000-12-06 [NBD]
Mac OS X 10.0           2001-03-24 [APL]
FreeBSD 4.3  		2001-04-20 [FBD]
OpenBSD 2.9  		2001-06-01 [OBD]
NetBSD 1.5.1		2001-07-11 [NBD] (patch release)
NetBSD 1.5.2		2001-09-13 [NBD] (patch release)
FreeBSD 4.4  		2001-09-18 [FBD]
Mac OS X 10.1		2001-09-29 [APL]
OpenBSD 3.0		2001-12-01 [OBD]
FreeBSD 4.5  		2002-01-29 [FBD]
BSD/OS 4.3		2002-03-14 [WRS]
OpenBSD 3.1		2002-05-19 [OBD]
FreeBSD 4.6  		2002-06-15 [FBD]
NetBSD 1.5.3		2002-07-22 [NBD] (patch release)
FreeBSD 4.6.2		2002-08-15 [FBD] (patch release)
Mac OS X 10.2		2002-08-23 [APL]
NetBSD 1.6		2002-09-14 [NBD]
FreeBSD 4.7		2002-10-08 [FBD]
OpenBSD 3.2		2002-11-01 [OBD]
FreeBSD 5.0		2003-01-17 [FBD]
				FreeBSD 5.0 is a separate branch off of
				-current, similar to 3.0.
FreeBSD 4.8		2003-04-03 [FBD]
NetBSD 1.6.1		2003-04-21 [NBD] (patch release)
OpenBSD 3.3		2003-05-01 [OBD]
BSD/OS 5.0		2003-05-?? [WRS]
FreeBSD 5.1		2003-06-09 [FBD]
Mac OS X 10.3		2003-10-24 [APL]
FreeBSD 4.9		2003-10-28 [FBD]
BSD/OS 5.1 ISE		2003-10-?? [WRS] (final version)
OpenBSD 3.4		2003-11-01 [OBD]
FreeBSD 5.2		2004-01-12 [FBD]
FreeBSD 5.2.1		2004-02-22 [FBD] (patch release)
NetBSD 1.6.2		2004-03-01 [NBD] (patch release)
OpenBSD 3.5		2004-04-01 [OBD]
FreeBSD 4.10		2004-05-27 [FBD]
DragonFly 1.0		2004-07-12 [DFB]
OpenBSD 3.6		2004-10-29 [OBD]
FreeBSD 5.3		2004-11-06 [FBD]
NetBSD 2.0		2004-12-09 [NBD]
FreeBSD 4.11		2005-01-25 [FBD]
DragonFly 1.2.0		2005-04-08 [DFB]
NetBSD 2.0.2		2005-04-14 [NBD] (security/critical release)
Mac OS X 10.4		2005-04-29 [APL]
FreeBSD 5.4		2005-05-09 [FBD]
OpenBSD 3.7		2005-05-19 [OBD]
NetBSD 2.0.3		2005-10-31 [NBD] (security/critical release)
OpenBSD 3.8		2005-11-01 [OBD]
FreeBSD 6.0		2005-11-01 [FBD]
NetBSD 2.1		2005-11-02 [NBD]
NetBSD 3.0		2005-12-23 [NBD]
DragonFly 1.4.0		2006-01-08 [DFB]
OpenBSD 3.9		2006-05-01 [OBD]
FreeBSD 6.1		2006-05-08 [FBD]
FreeBSD 5.5		2006-05-25 [FBD]
NetBSD 3.0.1		2006-07-24 [NBD] (security/critical release)
DragonFly 1.6.0		2006-07-24 [DFB]
OpenBSD 4.0		2006-11-01 [OBD]
NetBSD 3.0.2		2006-11-04 [NBD] (security/critical release)
NetBSD 3.1		2006-11-04 [NBD]
FreeBSD 6.2		2007-01-15 [FBD]
DragonFly 1.8.0		2007-01-30 [DFB]
OpenBSD 4.1		2007-05-01 [OBD]
DragonFly 1.10.0	2007-08-06 [DFB]
Mac OS X 10.5		2007-10-26 [APL]
OpenBSD 4.2		2007-11-01 [OBD]
NetBSD 4.0		2007-12-19 [NBD]
FreeBSD 6.3		2008-01-18 [FBD]
DragonFly 1.12.0	2008-02-26 [DFB]
FreeBSD 7.0		2008-02-27 [FBD]
OpenBSD 4.3		2008-05-01 [OBD]
DragonFly 2.0.0		2008-07-21 [DFB]
OpenBSD 4.4		2008-11-01 [OBD]
FreeBSD 6.4		2008-11-28 [FBD]

Bibliography
------------------------

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Acknowledgments
---------------

Josh Gilliam for suggestions, bug fixes, and finding very old
original BSD announcements from Usenet or tapes.

Steven M. Schultz for providing 2.8BSD, 2.10BSD, 2.11BSD manual pages.

--
Copyright (c) 1997-2007 Wolfram Schneider <wosch@FreeBSD.ORG>
URL: http://cvsweb.freebsd.org/src/share/misc/bsd-family-tree

$FreeBSD$