1 The UNIX system family tree: Research and BSD
2 ---------------------------------------------
14 Sixth Edition (V6) -----*
18 Seventh Edition (V7) |
22 \ 2BSD---------------*
30 4.1BSD --------------> 2.8BSD
32 4.1aBSD -----------\ |
36 *------ 4.1cBSD --------------> 2.9BSD
38 Eighth Edition | 2.9BSD-Seismo
40 +----<--- 4.2BSD 2.9.1BSD
42 +----<--- 4.3BSD -------------> 2.10BSD
44 Ninth Edition | / 2.10.1BSD
45 | 4.3BSD Tahoe-----+ |
55 *---------- 4.3BSD NET/2 -------------------+-------------*
57 386BSD 0.0 | | BSD/386 ALPHA
59 386BSD 0.1 ------------>+ | BSD/386 0.3.[13]
61 | 386BSD 1.0 | | BSD/386 0.9.[34]
64 | | 4.4BSD-Encumbered | |
65 | -NetBSD 0.8 | BSD/386 1.0
67 FreeBSD 1.0 <-----' NetBSD 0.9 | BSD/386 1.1
68 | | .----- 4.4BSD Lite |
69 FreeBSD 1.1 | / / | \ |
71 FreeBSD 1.1.5 .---|--------' / | \ |
73 FreeBSD 1.1.5.1 / | / | \ |
74 | / NetBSD 1.0 <-' | \ |
76 FreeBSD 2.0 <--' | | BSD/OS 2.0
78 FreeBSD 2.0.5 \ | BSD/OS 2.0.1
79 | .-----\------------- 4.4BSD Lite2 |
81 | | .-----|------Rhapsody | | | |
82 | | | | NetBSD 1.3 | | |
83 | | | | OpenBSD 2.3 | |
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 |
91 | FreeBSD 2.1.6.1 | | | \ | |
93 | FreeBSD 2.1.7 | | | | | |
94 | | | | | NetBSD 1.2.1 | |
95 | FreeBSD 2.1.7.1 | | | | |
98 *-FreeBSD 2.2 | | | | |
100 | FreeBSD 2.2.1 | | | | |
102 | FreeBSD 2.2.2 | | | OpenBSD 2.1 |
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 | FreeBSD 2.2.8 | | | | | |
115 | v | | | | OpenBSD 2.4 |
116 | FreeBSD 2.2.9 | | | | | |
118 FreeBSD 3.0 <--------* | | v | |
119 | | | NetBSD 1.3.3 | |
120 *---FreeBSD 3.1 | | | |
121 | | | | | BSD/OS 4.0.1
122 | FreeBSD 3.2----* | NetBSD 1.4 OpenBSD 2.5 |
126 | FreeBSD 3.3 | | | | NetBSD 1.4.1 | |
127 | | | | | | | OpenBSD 2.6 |
128 | FreeBSD 3.4 | | | | | | |
129 | | | | | | | | BSD/OS 4.1
130 FreeBSD 4.0 | | | | | NetBSD 1.4.2 | |
133 | FreeBSD 3.5 | | | | | OpenBSD 2.7 |
135 | FreeBSD 3.5.1 | | | | | | |
137 *---FreeBSD 4.1 | | | | | | |
139 | FreeBSD 4.1.1 | | / | | | |
141 | FreeBSD 4.2 Darwin/ | NetBSD 1.4.3 | |
142 | | Mac OS X | OpenBSD 2.8 BSD/OS 4.2
145 | | 10.0 NetBSD 1.5 | |
146 | FreeBSD 4.3 | | | | |
147 | | | | | OpenBSD 2.9 |
148 | | | | NetBSD 1.5.1 | |
150 | FreeBSD 4.4-. | | NetBSD 1.5.2 | |
151 | | | Mac OS X | | | |
152 | | | 10.1 | | OpenBSD 3.0 |
153 | FreeBSD 4.5 | | | | | |
154 | | \ | | | | BSD/OS 4.3
155 | FreeBSD 4.6 \ | | | OpenBSD 3.1 |
156 | | \ | | NetBSD 1.5.3 | |
157 | FreeBSD 4.6.2 Mac OS X | | |
159 | FreeBSD 4.7 | | | |
160 | | | NetBSD 1.6 OpenBSD 3.2 |
161 | FreeBSD 4.8 | | | | |
162 | | | | NetBSD 1.6.1 | |
163 | |--------. | | | OpenBSD 3.3 BSD/OS 5.0
165 | FreeBSD 4.9 | | | | OpenBSD 3.4 BSD/OS 5.1 ISE
167 | | | | | NetBSD 1.6.2 |
169 | | | | | | OpenBSD 3.5
171 | FreeBSD 4.10 | | | |
173 | FreeBSD 4.11 | | | |
175 | `-|------|-----------------|---------------------.
179 FreeBSD 5.1 | | | DragonFly 1.0
181 | ----- Mac OS X | | |
185 | FreeBSD 5.2.1 | | | |
187 *-------FreeBSD 5.3 | | | |
188 | | | | OpenBSD 3.6 |
190 | | | | | | | DragonFly 1.2.0
191 | | Mac OS X | | NetBSD 2.0.2 | |
193 | FreeBSD 5.4 | | | | | |
194 | | | | | | OpenBSD 3.7 |
195 | | | | | NetBSD 2.0.3 | |
197 *--FreeBSD | | | | v OpenBSD 3.8 |
200 | | | | | NetBSD 2.1 | |
202 | | | | NetBSD 3.0 | |
203 | | | | | | | | DragonFly 1.4.0
204 | | | | | | | OpenBSD 3.9 |
205 | FreeBSD | | | | | | |
207 | | FreeBSD 5.5 | | | | | |
208 | | | | | NetBSD 3.0.1 | DragonFly 1.6.0
210 | | | | | | OpenBSD 4.0 |
211 | | | | | NetBSD 3.0.2 | |
212 | | | | NetBSD 3.1 | |
213 | FreeBSD 6.2 | | | |
214 | | | | | DragonFly 1.8.0
215 | | | | OpenBSD 4.1 |
216 | | | | | DragonFly 1.10.0
219 | | | | OpenBSD 4.2 |
221 | FreeBSD 6.3 | | | | |
223 *--FreeBSD | | | | | DragonFly 1.12.0
225 | | | | | | OpenBSD 4.3 |
226 | | | | | NetBSD | DragonFly 2.0.0
227 | | FreeBSD | | 4.0.1 OpenBSD 4.4 |
230 | FreeBSD 7.1 | | | |
231 | | | | | DragonFly 2.2.0
232 | FreeBSD 7.2 | NetBSD 5.0 OpenBSD 4.5 |
234 | | Mac OS X | | \ | |
236 | | | | | NetBSD | DragonFly 2.4.0
237 | | | | | 5.0.1 OpenBSD 4.6 |
239 *--FreeBSD | | | | | | |
241 | | FreeBSD | | | NetBSD | |
242 | | 7.3 | | | 5.0.2 | DragonFly 2.6.0
243 | | | | | | OpenBSD 4.7 |
244 | FreeBSD | | | | | |
246 | | | | | | | DragonFly 2.8.2
247 | | | | | | OpenBSD 4.8 |
248 | | | | | *--NetBSD | |
249 | FreeBSD FreeBSD | | | 5.1 | |
250 | 8.2 7.4 | | | | | DragonFly 2.10.1
251 | | | | | | OpenBSD 4.9 |
252 | `-----. Mac OS X | | | | |
254 | | | | | | OpenBSD 5.0 |
255 *--FreeBSD | | | | | | |
256 | 9.0 | | | | NetBSD | DragonFly 3.0.1
257 | | FreeBSD | | | 5.1.2 | |
259 | | | | | | NetBSD | |
260 | | | | | | 5.1.3 | |
261 | | | | | | OpenBSD 5.1 |
262 | | | Mac OS X | `----. | |
264 | | | | NetBSD 6.0 | | |
265 | | | | | | | | OpenBSD 5.2 DragonFly 3.2.1
266 | FreeBSD | | | | | NetBSD | |
267 | 9.1 | | | | | 5.2 | |
269 | | | | | | | NetBSD | |
270 | | | | | | | 5.2.1 | |
273 | | | | | | NetBSD | |
274 | | | | | | 6.0.1 | |
276 | | | | | | NetBSD | |
277 | | | | | | 6.0.2 | |
278 | | | | | | | OpenBSD 5.3 DragonFly 3.4.1
279 | | | | | | NetBSD | |
280 | | | | | | 6.0.3 | |
282 | | | | | | NetBSD | |
283 | | | | | | 6.0.4 | |
285 | | | | | | NetBSD | |
286 | | | | | | 6.0.5 | |
288 | | | | | |`-NetBSD 6.1 | |
289 | | FreeBSD | | | | |
290 | | 8.4 | | NetBSD 6.1.1 | |
292 | FreeBSD | | NetBSD 6.1.2 | |
293 | 9.2 Mac OS X | | | |
294 | | 10.9 | | OpenBSD 5.4 |
295 | `-----. | | | | DragonFly 3.6.0
297 *--FreeBSD | | | NetBSD 6.1.3 | |
299 | | | | | | | DragonFly 3.6.1
302 | | | | | | | DragonFly 3.6.2
303 | | | | | NetBSD 6.1.4 | |
305 | | | | | | OpenBSD 5.5 |
307 | | | | | | | DragonFly 3.8.0
310 | | | | | | | DragonFly 3.8.1
313 | | | | | | | DragonFly 3.6.3
315 | | FreeBSD | | | | |
317 | | | | NetBSD 6.1.5 | DragonFly 3.8.2
320 | | | | OpenBSD 5.6 |
322 | 10.1 | | | DragonFly 4.0.1
324 | | | | | DragonFly 4.0.2
326 | | | | | DragonFly 4.0.3
328 | | | | | DragonFly 4.0.4
330 | | | | | DragonFly 4.0.5
332 | | | | OpenBSD 5.7 |
333 | | | | | DragonFly 4.2.0
336 | | OS X NetBSD 7.0 | |
337 | | 10.11 | OpenBSD 5.8 |
338 | | | | | DragonFly 4.4.1
339 | FreeBSD | | OpenBSD 5.9 |
341 | | | | DragonFly 4.6.0
342 *--FreeBSD | | OpenBSD 6.0 |
346 FreeBSD 12 -current | NetBSD -current OpenBSD -current DragonFly -current
353 Time tolerance +/- 6 months, depending on which book/article you read; if it
354 was the announcement in Usenet or if it was available as tape.
356 [44B] McKusick, Marshall Kirk, Keith Bostic, Michael J Karels,
357 and John Quarterman. The Design and Implementation of
358 the 4.4BSD Operating System.
359 [APL] Apple website [http://www.apple.com/macosx/]
360 [BSDI] Berkeley Software Design, Inc.
361 [DFB] DragonFlyBSD Project, The.
362 [DOC] README, COPYRIGHT on tape.
363 [FBD] FreeBSD Project, The.
364 [KB] Keith Bostic. BSD2.10 available from Usenix. comp.unix.sources,
365 Volume 11, Info 4, April, 1987.
366 [KKK] Mike Karels, Kirk McKusick, and Keith Bostic. tahoe announcement.
367 comp.bugs.4bsd.ucb-fixes, June 15, 1988.
368 [KSJ] Michael J. Karels, Carl F. Smith, and William F. Jolitz.
369 Changes in the Kernel in 2.9BSD. Second Berkeley Software
370 Distribution UNIX Version 2.9, July, 1983.
371 [NBD] NetBSD Project, The.
372 [OBD] OpenBSD Project, The.
373 [QCU] Salus, Peter H. A quarter century of UNIX.
374 [SMS] Steven M. Schultz. 2.11BSD, UNIX for the PDP-11.
375 [TUHS] The Unix Historical Society. http://minnie.tuhs.org/Unix_History/.
376 [USE] Usenet announcement.
377 [WRS] Wind River Systems, Inc.
378 [dmr] Dennis Ritchie, via E-Mail
383 First Edition 1971-11-03 [QCU]
384 DEC PDP-11/20, Assembler
385 Second Edition 1972-06-12 [QCU]
386 10 UNIX installations
387 Third Edition 1973-02-xx [QCU]
388 Pipes, 16 installations
389 Fourth Edition 1973-11-xx [QCU]
390 rewriting in C effected,
391 above 30 installations
392 Fifth Edition 1974-06-xx [QCU]
393 above 50 installations
394 Sixth Edition 1975-05-xx [QCU]
396 Seventh Edition 1979-01-xx [QCU]
398 Eighth Edition 1985-02-xx [QCU]
399 VAX 11/750, VAX 11/780 [dmr]
400 descended from 4.1c BSD [dmr]
401 descended from 4.1 BSD [44B]
402 scooping-out and replacement of the character-device
403 and networking part by the streams mechanism
405 Ninth Edition 1986-09-xx [QCU]
406 Tenth Edition 1989-10-xx [QCU]
410 PDP-11, Pascal, ex(1)
411 30 free copies of 1BSD sent out
412 35 tapes sold for 50 USD [QCU]
413 2BSD mid 1978 [QCU] 1979-05-10 [TUHS]
414 75 2BSD tapes shipped
415 2.79BSD 1980-04-xx [TUHS]
416 2.8BSD 1981-07-xx [KSJ]
418 2.8.1BSD 1982-01-xx [QCU]
419 set of performance improvements
420 2.9BSD 1983-07-xx [KSJ]
421 2.9.1BSD 1983-11-xx [TUHS]
422 2.9BSD-Seismo 1985-08-xx [SMS]
423 2.10BSD 1987-04-xx [KKK]
424 2.10.1BSD 1989-01-xx [SMS]
425 2.11BSD 1992-02-xx [SMS]
426 2.11BSD rev #430 1999-12-13 [SMS]
428 32V 1978-1[01]-xx [QCU]
429 3BSD late 1979 [QCU] March 1980 [TUHS]
430 virtual memory, page replacement,
433 4.1BSD 1981-07-08 [DOC]
435 alpha release, 100 sites, networking [44B]
436 4.1bBSD internal release, fast filesystem [44B]
438 beta release, IPC [44B]
439 4.2BSD 1983-09-xx [QCU]
441 4.3BSD 1986-06-xx [QCU]
442 1986-04-05 [KB], [DOC]
443 4.3BSD Tahoe 1988-06-15 [QCU], [DOC]
444 4.3BSD NET/1 1988-11-xx [QCU]
446 4.3BSD Reno 1990-06-29 [QCU], [DOC]
447 4.3BSD NET/2 1991-06-28 [QCU], [DOC]
449 BSD/386 ALPHA 1991-12-xx [BSDI]
450 first code released to people outside BSDI
451 386BSD 0.0 1992-02-xx [DOC]
452 BSD/386 0.3.1 1992-04-xx [BSDI] first ext. beta; B customers
453 BSD/386 0.3.3 1992-06-xx [BSDI] first CDROM version
454 386BSD 0.1 1992-07-28 [DOC]
455 4.4BSD Alpha 1992-07-07
456 BSD/386 0.9.3 1992-10-xx [BSDI]
457 first external gamma; G customers
458 BSD/386 0.9.4 1992-12-xx [BSDI]
459 would have been 1.0 except for request
460 for preliminary injunction
461 BSD/386 1.0 1993-03-xx [BSDI]
462 injunction denied; first official release
463 NetBSD 0.8 1993-04-20 [NBD]
464 4.4BSD 1993-06-01 [USE]
465 NetBSD 0.9 1993-08-23 [NBD]
466 FreeBSD 1.0 1993-11-01 [FBD]
467 FreeBSD 1.0.2 1993-11-14 [FBD]
468 supersedes 1.0 13 days after release.
469 BSD/386 1.1 1994-02-xx [BSDI]
470 4.4BSD Lite 1994-03-01 [USE]
471 FreeBSD 1.1 1994-05-07 [FBD]
472 FreeBSD 1.1.5 1994-06-30 [FBD]
473 FreeBSD 1.1.5.1 1994-07-05 [FBD]
474 supersedes 1.1.5 5 days after release.
475 NetBSD 1.0 1994-10-26 [NBD]
476 386BSD 1.0 1994-11-12 [USE]
477 FreeBSD 2.0 1994-11-23 [FBD]
478 BSD/OS 2.0 1995-01-xx [BSDI] 4.4 lite based
479 FreeBSD 2.0.5 1995-06-10 [FBD]
480 BSD/OS 2.0.1 1995-06-xx [BSDI]
481 4.4BSD Lite Release 2 1995-06-xx [44B]
482 the true final distribution from the CSRG
483 FreeBSD 2.1.0 1995-11-19 [FBD]
484 NetBSD 1.1 1995-11-26 [NBD]
485 BSD/OS 2.1 1996-01-xx [BSDI]
486 FreeBSD 2.1.5 1996-07-14 [FBD]
487 NetBSD 1.2 1996-10-04 [NBD]
488 OpenBSD 2.0 1996-10-18 [OBD]
489 FreeBSD 2.1.6 1996-11-16 [FBD]
490 FreeBSD 2.1.6.1 1996-11-25 [FBD] (sendmail security release)
492 FreeBSD 2.1.7 1997-02-20 [FBD]
493 BSD/OS 3.0 1997-02-xx [BSDI] 4.4 lite2 based
494 FreeBSD 2.2.0 1997-03-16 [FBD]
495 FreeBSD 2.2.1 1997-03-25 [FBD]
496 FreeBSD 2.2.2 1997-05-16 [FBD]
497 NetBSD 1.2.1 1997-05-20 [NBD] (patch release)
498 OpenBSD 2.1 1997-06-01 [OBD]
499 FreeBSD 2.2.5 1997-10-22 [FBD]
500 OpenBSD 2.2 1997-12-01 [OBD]
501 NetBSD 1.3 1998-01-04 [NBD]
502 FreeBSD 2.2.6 1998-03-25 [FBD]
503 NetBSD 1.3.1 1998-03-09 [NBD] (patch release)
504 BSD/OS 3.1 1998-03-xx [BSDI]
505 OpenBSD 2.3 1998-05-19 [OBD]
506 NetBSD 1.3.2 1998-05-29 [NBD] (patch release)
507 FreeBSD 2.2.7 1998-07-22 [FBD]
508 BSD/OS 4.0 1998-08-xx [BSDI]
509 2-lock MP support, ELF executables
510 FreeBSD 3.0 1998-10-16 [FBD]
511 FreeBSD-3.0 is a snapshot from -current,
512 while 3.1 and 3.2 are from 3.x-stable which
513 was branched quite some time after 3.0-release
514 FreeBSD 2.2.8 1998-11-29 [FBD]
515 OpenBSD 2.4 1998-12-01 [OBD]
516 NetBSD 1.3.3 1998-12-23 [NBD] (patch release)
517 FreeBSD 3.1 1999-02-15 [FBD]
518 BSD/OS 4.0.1 1999-03-xx [BSDI]
519 NetBSD 1.4 1999-05-12 [NBD]
520 FreeBSD 3.2 1999-05-17 [FBD]
521 OpenBSD 2.5 1999-05-19 [OBD]
522 NetBSD 1.4.1 1999-08-26 [NBD] (patch release)
523 FreeBSD 3.3 1999-09-17 [FBD]
524 OpenBSD 2.6 1999-12-01 [OBD]
525 FreeBSD 3.4 1999-12-20 [FBD]
526 BSD/OS 4.1 1999-12-xx [BSDI]
527 FreeBSD 4.0 2000-03-13 [FBD]
528 NetBSD 1.4.2 2000-03-19 [NBD] (patch release)
529 OpenBSD 2.7 2000-06-15 [OBD]
530 FreeBSD 3.5 2000-06-24 [FBD]
531 FreeBSD 4.1 2000-07-27 [FBD]
532 FreeBSD 3.5.1 2000-07-28 [FBD]
533 FreeBSD 4.1.1 2000-09-25 [FBD] (a network-only patch release)
534 FreeBSD 4.2 2000-11-21 [FBD]
535 NetBSD 1.4.3 2000-11-25 [NBD] (patch release)
536 BSD/OS 4.2 2000-11-29 [BSDI]
537 OpenBSD 2.8 2000-12-01 [OBD]
538 NetBSD 1.5 2000-12-06 [NBD]
539 Mac OS X 10.0 2001-03-24 [APL]
540 FreeBSD 4.3 2001-04-20 [FBD]
541 OpenBSD 2.9 2001-06-01 [OBD]
542 NetBSD 1.5.1 2001-07-11 [NBD] (patch release)
543 NetBSD 1.5.2 2001-09-13 [NBD] (patch release)
544 FreeBSD 4.4 2001-09-18 [FBD]
545 Mac OS X 10.1 2001-09-29 [APL]
546 OpenBSD 3.0 2001-12-01 [OBD]
547 FreeBSD 4.5 2002-01-29 [FBD]
548 BSD/OS 4.3 2002-03-14 [WRS]
549 OpenBSD 3.1 2002-05-19 [OBD]
550 FreeBSD 4.6 2002-06-15 [FBD]
551 NetBSD 1.5.3 2002-07-22 [NBD] (patch release)
552 FreeBSD 4.6.2 2002-08-15 [FBD] (patch release)
553 Mac OS X 10.2 2002-08-23 [APL]
554 NetBSD 1.6 2002-09-14 [NBD]
555 FreeBSD 4.7 2002-10-08 [FBD]
556 OpenBSD 3.2 2002-11-01 [OBD]
557 FreeBSD 5.0 2003-01-17 [FBD]
558 FreeBSD 5.0 is a separate branch off of
559 -current, similar to 3.0.
560 FreeBSD 4.8 2003-04-03 [FBD]
561 NetBSD 1.6.1 2003-04-21 [NBD] (patch release)
562 OpenBSD 3.3 2003-05-01 [OBD]
563 BSD/OS 5.0 2003-05-?? [WRS]
564 FreeBSD 5.1 2003-06-09 [FBD]
565 Mac OS X 10.3 2003-10-24 [APL]
566 FreeBSD 4.9 2003-10-28 [FBD]
567 BSD/OS 5.1 ISE 2003-10-?? [WRS] (final version)
568 OpenBSD 3.4 2003-11-01 [OBD]
569 FreeBSD 5.2 2004-01-12 [FBD]
570 FreeBSD 5.2.1 2004-02-22 [FBD] (patch release)
571 NetBSD 1.6.2 2004-03-01 [NBD] (patch release)
572 OpenBSD 3.5 2004-04-01 [OBD]
573 FreeBSD 4.10 2004-05-27 [FBD]
574 DragonFly 1.0 2004-07-12 [DFB]
575 OpenBSD 3.6 2004-10-29 [OBD]
576 FreeBSD 5.3 2004-11-06 [FBD]
577 NetBSD 2.0 2004-12-09 [NBD]
578 FreeBSD 4.11 2005-01-25 [FBD]
579 DragonFly 1.2.0 2005-04-08 [DFB]
580 NetBSD 2.0.2 2005-04-14 [NBD] (security/critical release)
581 Mac OS X 10.4 2005-04-29 [APL]
582 FreeBSD 5.4 2005-05-09 [FBD]
583 OpenBSD 3.7 2005-05-19 [OBD]
584 NetBSD 2.0.3 2005-10-31 [NBD] (security/critical release)
585 OpenBSD 3.8 2005-11-01 [OBD]
586 FreeBSD 6.0 2005-11-01 [FBD]
587 NetBSD 2.1 2005-11-02 [NBD]
588 NetBSD 3.0 2005-12-23 [NBD]
589 DragonFly 1.4.0 2006-01-08 [DFB]
590 FreeBSD 2.2.9 2006-04-01 [FBD]
591 OpenBSD 3.9 2006-05-01 [OBD]
592 FreeBSD 6.1 2006-05-08 [FBD]
593 FreeBSD 5.5 2006-05-25 [FBD]
594 NetBSD 3.0.1 2006-07-24 [NBD] (security/critical release)
595 DragonFly 1.6.0 2006-07-24 [DFB]
596 OpenBSD 4.0 2006-11-01 [OBD]
597 NetBSD 3.0.2 2006-11-04 [NBD] (security/critical release)
598 NetBSD 3.1 2006-11-04 [NBD]
599 FreeBSD 6.2 2007-01-15 [FBD]
600 DragonFly 1.8.0 2007-01-30 [DFB]
601 OpenBSD 4.1 2007-05-01 [OBD]
602 DragonFly 1.10.0 2007-08-06 [DFB]
603 Mac OS X 10.5 2007-10-26 [APL]
604 OpenBSD 4.2 2007-11-01 [OBD]
605 NetBSD 4.0 2007-12-19 [NBD]
606 FreeBSD 6.3 2008-01-18 [FBD]
607 DragonFly 1.12.0 2008-02-26 [DFB]
608 FreeBSD 7.0 2008-02-27 [FBD]
609 OpenBSD 4.3 2008-05-01 [OBD]
610 DragonFly 2.0.0 2008-07-21 [DFB]
611 OpenBSD 4.4 2008-11-01 [OBD]
612 FreeBSD 6.4 2008-11-28 [FBD]
613 FreeBSD 7.1 2009-01-04 [FBD]
614 DragonFly 2.2.0 2009-02-17 [DFB]
615 NetBSD 5.0 2009-04-29 [NBD]
616 OpenBSD 4.5 2009-05-01 [OBD]
617 FreeBSD 7.2 2009-05-04 [FBD]
618 Mac OS X 10.6 2009-06-08 [APL]
619 NetBSD 5.0.1 2009-08-02 [NBD] (security/critical release)
620 DragonFly 2.4.0 2009-09-16 [DFB]
621 OpenBSD 4.6 2009-10-18 [OBD]
622 FreeBSD 8.0 2009-11-26 [FBD]
623 NetBSD 5.0.2 2010-02-12 [NBD] (security/critical release)
624 FreeBSD 7.3 2010-03-23 [FBD]
625 DragonFly 2.6.0 2010-03-28 [DFB]
626 OpenBSD 4.7 2010-05-19 [OBD]
627 FreeBSD 8.1 2010-07-24 [FBD]
628 DragonFly 2.8.2 2010-10-30 [DFB]
629 OpenBSD 4.8 2010-11-01 [OBD]
630 NetBSD 5.1 2010-11-19 [NBD]
631 FreeBSD 7.4 2011-02-24 [FBD]
632 FreeBSD 8.2 2011-02-24 [FBD]
633 DragonFly 2.10.1 2011-04-26 [DFB]
634 OpenBSD 4.9 2011-05-01 [OBD]
635 Mac OS X 10.7 2011-07-20 [APL]
636 OpenBSD 5.0 2011-11-01 [OBD]
637 FreeBSD 9.0 2012-01-12 [FBD]
638 NetBSD 5.1.2 2012-02-02 [NBD] (security/critical release)
639 DragonFly 3.0.1 2012-02-21 [DFB]
640 FreeBSD 8.3 2012-04-18 [FBD]
641 OpenBSD 5.1 2012-05-01 [OBD]
642 Mac OS X 10.8 2012-07-25 [APL]
643 NetBSD 6.0 2012-10-17 [NBD]
644 OpenBSD 5.2 2012-11-01 [OBD]
645 DragonFly 3.2.1 2012-11-02 [DFB]
646 NetBSD 5.2 2012-12-03 [NBD]
647 NetBSD 6.0.1 2012-12-26 [NBD] (security/critical release)
648 FreeBSD 9.1 2012-12-30 [FBD]
649 DragonFly 3.4.1 2013-04-29 [DFB]
650 OpenBSD 5.3 2013-05-01 [OBD]
651 NetBSD 6.0.2 2013-05-18 [NBD] (security/critical release)
652 NetBSD 6.1 2013-05-18 [NBD]
653 FreeBSD 8.4 2013-06-07 [FBD]
654 NetBSD 6.1.1 2013-08-22 [NBD]
655 NetBSD 5.1.3 2013-09-29 [NBD]
656 NetBSD 5.2.1 2013-09-29 [NBD]
657 FreeBSD 9.2 2013-09-30 [FBD]
658 NetBSD 6.0.3 2013-09-30 [NBD]
659 NetBSD 6.1.2 2013-09-30 [NBD]
660 Mac OS X 10.9 2013-10-22 [APL]
661 OpenBSD 5.4 2013-11-01 [OBD]
662 DragonFly 3.6.0 2013-11-25 [DFB]
663 FreeBSD 10.0 2014-01-20 [FBD]
664 NetBSD 6.0.4 2014-01-27 [NBD]
665 NetBSD 6.1.3 2014-01-27 [NBD]
666 DragonFly 3.6.1 2014-02-22 [DFB]
667 DragonFly 3.6.2 2014-04-10 [DFB]
668 NetBSD 6.0.5 2014-04-19 [NDB]
669 NetBSD 6.1.4 2014-04-19 [NDB]
670 OpenBSD 5.5 2014-05-01 [OBD]
671 DragonFly 3.8.0 2014-06-04 [DFB]
672 DragonFly 3.8.1 2014-06-16 [DFB]
673 DragonFly 3.6.3 2014-06-17 [DFB]
674 FreeBSD 9.3 2014-07-05 [FBD]
675 DragonFly 3.8.2 2014-08-08 [DFB]
676 NetBSD 6.1.5 2014-09-22 [NBD]
677 Mac OS X 10.10 2014-10-16 [APL]
678 OpenBSD 5.6 2014-11-01 [OBD]
679 FreeBSD 10.1 2014-11-14 [FBD]
680 DragonFly 4.0.1 2014-11-25 [DFB]
681 DragonFly 4.0.2 2015-01-07 [DFB]
682 DragonFly 4.0.3 2015-01-21 [DFB]
683 DragonFly 4.0.4 2015-03-09 [DFB]
684 DragonFly 4.0.5 2015-03-23 [DFB]
685 OpenBSD 5.7 2015-05-01 [OBD]
686 DragonFly 4.2.0 2015-06-29 [DFB]
687 FreeBSD 10.2 2015-08-13 [FBD]
688 NetBSD 7.0 2015-09-25 [NBD]
689 OS X 10.11 2015-09-30 [APL]
690 OpenBSD 5.8 2015-10-18 [OBD]
691 DragonFly 4.4.1 2015-12-07 [DFB]
692 OpenBSD 5.9 2016-03-29 [OBD]
693 FreeBSD 10.3 2016-04-04 [FBD]
694 DragonFly 4.6.0 2016-08-02 [DFB]
695 OpenBSD 6.0 2016-09-01 [OBD]
698 ------------------------
700 Leffler, Samuel J., Marshall Kirk McKusick, Michael J Karels and John
701 Quarterman. The Design and Implementation of the 4.3BSD UNIX Operating
702 System. Reading, Mass. Addison-Wesley, 1989. ISBN 0-201-06196-1
704 Salus, Peter H. A quarter century of UNIX. Addison-Wesley Publishing
705 Company, Inc., 1994. ISBN 0-201-54777-5
707 McKusick, Marshall Kirk, Keith Bostic, Michael J Karels, and John
708 Quarterman. The Design and Implementation of the 4.4BSD Operating
709 System. Reading, Mass. Addison-Wesley, 1996. ISBN 0-201-54979-4
711 McKusick, Marshall Kirk, George Neville-Neil. The Design and
712 Implementation of the FreeBSD Operating System.
713 Addison-Wesley Professional, Published: Aug 2, 2004. ISBN 0-201-70245-2
715 McKusick, Marshall Kirk, George Neville-Neil, Robert Watson. The
716 Design and Implementation of the FreeBSD Operating System, 2nd Edition.
717 Pearson Education, Inc., 2014. ISBN 0-321-96897-2
719 Doug McIlroy. Research Unix Reader.
721 Michael G. Brown. The Role of BSD in the Development of Unix.
722 Presented to the Tasmanian Unix Special Interest Group of the
723 Australian Computer Society, Hobart, August 1993.
725 Peter H. Salus. Unix at 25. Byte Magazine, October 1994.
726 URL: http://www.byte.com/art/9410/sec8/art3.htm
728 Andreas Klemm, Lars Köller. If you're going to San Francisco ...
729 Die freien BSD-Varianten von Unix. c't April 1997, page 368ff.
731 BSD Release Announcements collection.
732 URL: http://www.FreeBSD.org/releases/
734 BSD Hypertext Man Pages
735 URL: http://www.FreeBSD.org/cgi/man.cgi
737 UNIX history graphing project
738 URL: http://minnie.tuhs.org/Unix_History/index.html
741 URL: http://www.levenez.com/unix/
743 James Howard: The BSD Family Tree
744 URL: http://ezine.daemonnews.org/200104/bsd_family.html
745 ("what are the differences between FreeBSD, NetBSD, and OpenBSD?")
751 Josh Gilliam for suggestions, bug fixes, and finding very old
752 original BSD announcements from Usenet or tapes.
754 Steven M. Schultz for providing 2.8BSD, 2.10BSD, 2.11BSD manual pages.
757 Copyright (c) 1997-2012 Wolfram Schneider <wosch@FreeBSD.ORG>
758 URL: http://svnweb.freebsd.org/base/head/share/misc/bsd-family-tree