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 |
189 | | | *--NetBSD 2.0 | |
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 |
220 | | | *--NetBSD 4.0 | |
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 OpenBSD 4.5 |
235 | | Mac OS X | | | \ | |
237 | | | | | | NetBSD | DragonFly 2.4.0
238 | | | | | | 5.0.1 OpenBSD 4.6 |
240 *--FreeBSD | | | | | | | |
241 | 8.0 | | | | | | | |
242 | | FreeBSD | | | | NetBSD | |
243 | | 7.3 | | | | 5.0.2 | DragonFly 2.6.0
244 | | | | | | | OpenBSD 4.7 |
245 | FreeBSD | | | | | | |
247 | | | | | | | | DragonFly 2.8.2
248 | | | | | | | OpenBSD 4.8 |
249 | | | | | | *--NetBSD | |
250 | FreeBSD FreeBSD | | | 5.1 | |
251 | 8.2 7.4 | | | | | DragonFly 2.10.1
252 | | | | | | OpenBSD 4.9 |
253 | `-----. Mac OS X | | | | |
255 | | | | | | OpenBSD 5.0 |
256 *--FreeBSD | | | | | | |
257 | 9.0 | | | | NetBSD | DragonFly 3.0.1
258 | | FreeBSD | | | 5.1.2 | |
260 | | | | | | NetBSD | |
261 | | | | | | 5.1.3 | |
263 | | | | | | NetBSD | |
264 | | | | | | 5.1.4 | |
265 | | | | | | OpenBSD 5.1 |
266 | | | Mac OS X | `--------. | |
268 | | | | *--NetBSD | | |
270 | | | | | | | | OpenBSD 5.2 DragonFly 3.2.1
271 | FreeBSD | | | | | NetBSD | |
272 | 9.1 | | | | | 5.2 | |
274 | | | | | | | NetBSD | |
275 | | | | | | | 5.2.1 | |
277 | | | | | | | NetBSD | |
278 | | | | | | | 5.2.2 | |
281 | | | | | | NetBSD | |
282 | | | | | | 6.0.1 | |
283 | | | | | | | OpenBSD 5.3 DragonFly 3.4.1
284 | | | | | | NetBSD | |
285 | | | | | | 6.0.2 | |
287 | | | | | | NetBSD | |
288 | | | | | | 6.0.3 | |
290 | | | | | | NetBSD | |
291 | | | | | | 6.0.4 | |
293 | | | | | | NetBSD | |
294 | | | | | | 6.0.5 | |
296 | | | | | | NetBSD | |
297 | | | | | | 6.0.6 | |
299 | | | | | *--NetBSD | |
301 | | FreeBSD | | | | |
302 | | 8.4 | | NetBSD | |
305 | FreeBSD | | NetBSD | |
308 | | 10.9 | | OpenBSD 5.4 |
309 | `-----. | | | | DragonFly 3.6.0
311 *--FreeBSD | | | NetBSD | |
312 | 10.0 | | | 6.1.3 | |
314 | | | | | | | DragonFly 3.6.1
317 | | | | | | | DragonFly 3.6.2
321 | | | | | | OpenBSD 5.5 |
323 | | | | | | | DragonFly 3.8.0
326 | | | | | | | DragonFly 3.8.1
329 | | | | | | | DragonFly 3.6.3
331 | | FreeBSD | | | | |
333 | | | | NetBSD | DragonFly 3.8.2
337 | | | | OpenBSD 5.6 |
339 | 10.1 | | | DragonFly 4.0.1
341 | | | | | DragonFly 4.0.2
343 | | | | | DragonFly 4.0.3
345 | | | | | DragonFly 4.0.4
347 | | | | | DragonFly 4.0.5
349 | | | | OpenBSD 5.7 |
350 | | | | | DragonFly 4.2.0
353 | | macOS *--NetBSD 7.0 | |
354 | | 10.11 | | | OpenBSD 5.8 |
355 | | | | | `--. | DragonFly 4.4.1
356 | FreeBSD | | | | OpenBSD 5.9 |
360 | `------. | | | | | DragonFly 4.6.0
363 *--FreeBSD | macOS | | | OpenBSD 6.0 |
364 | 11.0 | 10.12 | | NetBSD | |
365 | | | | | | 7.0.2 | |
367 | | | | | *--NetBSD | |
371 | | | macOS | | | | DragonFly 4.8.0
372 | | | 10.13 | | | OpenBSD 6.1 |
373 | FreeBSD | | | | | | DragonFly 5.0.0
374 | 11.1 FreeBSD | | | | | |
375 | | 10.4 | | | | OpenBSD 6.2 DragonFly 5.0.1
377 | `------. | | | NetBSD | DragonFly 5.0.2
381 | | | | | 7.1.2 `--. |
383 | | | | `-----. OpenBSD 6.3 |
384 | | | *--NetBSD | | DragonFly 5.2.0
386 | | | | | | | DragonFly 5.2.1
388 | | | | | | | DragonFly 5.2.2
389 | FreeBSD | | | *--NetBSD | |
392 | | 10.14 | | OpenBSD 6.4 |
394 | | | | | | DragonFly 5.4.0
395 *--FreeBSD | | | | | |
396 | 12.0 | | | | | DragonFly 5.4.1
397 | | | | | | OpenBSD 6.5 |
400 | | | | | 8.1 | DragonFly 5.6
402 | | | | | | | DragonFly 5.6.1
403 | | FreeBSD macOS | | | |
404 | | 11.3 10.15 | | | |
405 | FreeBSD | | | OpenBSD 6.6 |
406 | 12.1 macOS | `-------. | |
407 | | 10.15.1 | | | DragonFly 5.6.2
408 | | | *--NetBSD | | |
411 | 12.2 | | | | DragonFly 5.8
413 | | | | | | DragonFly 5.6.3
417 FreeBSD 13 -current | NetBSD -current OpenBSD -current DragonFly -current
424 Time tolerance +/- 6 months, depending on which book/article you read; if it
425 was the announcement in Usenet or if it was available as tape.
427 [44B] McKusick, Marshall Kirk, Keith Bostic, Michael J Karels,
428 and John Quarterman. The Design and Implementation of
429 the 4.4BSD Operating System.
430 [APL] Apple website [https://www.apple.com/macosx/]
431 [BSDI] Berkeley Software Design, Inc.
432 [DFB] DragonFlyBSD Project, The.
433 [DOC] README, COPYRIGHT on tape.
434 [FBD] FreeBSD Project, The.
435 [KB] Keith Bostic. BSD2.10 available from Usenix. comp.unix.sources,
436 Volume 11, Info 4, April, 1987.
437 [KKK] Mike Karels, Kirk McKusick, and Keith Bostic. tahoe announcement.
438 comp.bugs.4bsd.ucb-fixes, June 15, 1988.
439 [KSJ] Michael J. Karels, Carl F. Smith, and William F. Jolitz.
440 Changes in the Kernel in 2.9BSD. Second Berkeley Software
441 Distribution UNIX Version 2.9, July, 1983.
442 [NBD] NetBSD Project, The.
443 [OBD] OpenBSD Project, The.
444 [QCU] Salus, Peter H. A quarter century of UNIX.
445 [SMS] Steven M. Schultz. 2.11BSD, UNIX for the PDP-11.
446 [TUHS] The Unix Historical Society. http://minnie.tuhs.org/Unix_History/.
447 [USE] Usenet announcement.
448 [WRS] Wind River Systems, Inc.
449 [dmr] Dennis Ritchie, via E-Mail
454 First Edition 1971-11-03 [QCU]
455 DEC PDP-11/20, Assembler
456 Second Edition 1972-06-12 [QCU]
457 10 UNIX installations
458 Third Edition 1973-02-xx [QCU]
459 Pipes, 16 installations
460 Fourth Edition 1973-11-xx [QCU]
461 rewriting in C effected,
462 above 30 installations
463 Fifth Edition 1974-06-xx [QCU]
464 above 50 installations
465 Sixth Edition 1975-05-xx [QCU]
467 Seventh Edition 1979-01-xx [QCU] 1979-01-10 [TUHS]
469 Eighth Edition 1985-02-xx [QCU]
470 VAX 11/750, VAX 11/780 [dmr]
471 descended from 4.1c BSD [dmr]
472 descended from 4.1 BSD [44B]
473 scooping-out and replacement of the character-device
474 and networking part by the streams mechanism
476 Ninth Edition 1986-09-xx [QCU]
477 Tenth Edition 1989-10-xx [QCU]
482 PDP-11, Pascal, ex(1)
483 30 free copies of 1BSD sent out
484 35 tapes sold for 50 USD [QCU]
485 2BSD mid 1978 [QCU] 1979-05-10 [TUHS]
486 75 2BSD tapes shipped
487 2.79BSD 1980-04-xx [TUHS]
488 2.8BSD 1981-07-xx [KSJ]
490 2.8.1BSD 1982-01-xx [QCU]
491 set of performance improvements
492 2.9BSD 1983-07-xx [KSJ]
493 2.9.1BSD 1983-11-xx [TUHS]
494 2.9BSD-Seismo 1985-08-xx [SMS]
495 2.10BSD 1987-04-xx [KKK]
496 2.10.1BSD 1989-01-xx [SMS]
497 2.11BSD 1991-03-14 [SMS]
498 2.11BSD rev #430 1999-12-13 [SMS]
500 32V 1978-1[01]-xx [QCU] 1979-03-26 [TUHS]
501 3BSD late 1979 [QCU] March 1980 [TUHS]
502 virtual memory, page replacement,
505 4.1BSD 1981-07-08 [DOC]
507 alpha release, 100 sites, networking [44B]
508 4.1bBSD internal release, fast filesystem [44B]
510 beta release, IPC [44B]
511 4.2BSD 1983-09-xx [QCU]
513 4.3BSD 1986-06-xx [QCU]
514 1986-04-05 [KB], [DOC]
515 4.3BSD Tahoe 1988-06-15 [QCU], [DOC]
516 4.3BSD NET/1 1988-11-xx [QCU]
518 4.3BSD Reno 1990-06-29 [QCU], [DOC]
519 4.3BSD NET/2 1991-06-28 [QCU], [DOC]
521 BSD/386 ALPHA 1991-12-xx [BSDI]
522 first code released to people outside BSDI
523 386BSD 0.0 1992-02-xx [DOC]
524 BSD/386 0.3.1 1992-04-xx [BSDI] first ext. beta; B customers
525 BSD/386 0.3.3 1992-06-xx [BSDI] first CDROM version
526 386BSD 0.1 1992-07-28 [DOC]
527 4.4BSD Alpha 1992-07-07
528 BSD/386 0.9.3 1992-10-xx [BSDI]
529 first external gamma; G customers
530 BSD/386 0.9.4 1992-12-xx [BSDI]
531 would have been 1.0 except for request
532 for preliminary injunction
533 BSD/386 1.0 1993-03-xx [BSDI]
534 injunction denied; first official release
535 NetBSD 0.8 1993-04-20 [NBD]
536 4.4BSD 1993-06-01 [USE]
537 NetBSD 0.9 1993-08-23 [NBD]
538 FreeBSD 1.0 1993-11-01 [FBD]
539 FreeBSD 1.0.2 1993-11-14 [FBD]
540 supersedes 1.0 13 days after release.
541 BSD/386 1.1 1994-02-xx [BSDI]
542 4.4BSD Lite 1994-03-01 [USE]
543 FreeBSD 1.1 1994-05-07 [FBD]
544 FreeBSD 1.1.5 1994-06-30 [FBD]
545 FreeBSD 1.1.5.1 1994-07-05 [FBD]
546 supersedes 1.1.5 5 days after release.
547 NetBSD 1.0 1994-10-26 [NBD]
548 386BSD 1.0 1994-11-12 [USE]
549 FreeBSD 2.0 1994-11-23 [FBD]
550 BSD/OS 2.0 1995-01-xx [BSDI] 4.4 lite based
551 FreeBSD 2.0.5 1995-06-10 [FBD]
552 BSD/OS 2.0.1 1995-06-xx [BSDI]
553 4.4BSD Lite Release 2 1995-06-xx [44B]
554 the true final distribution from the CSRG
555 FreeBSD 2.1.0 1995-11-19 [FBD]
556 NetBSD 1.1 1995-11-26 [NBD]
557 BSD/OS 2.1 1996-01-xx [BSDI]
558 FreeBSD 2.1.5 1996-07-14 [FBD]
559 NetBSD 1.2 1996-10-04 [NBD]
560 OpenBSD 2.0 1996-10-18 [OBD]
561 FreeBSD 2.1.6 1996-11-16 [FBD]
562 FreeBSD 2.1.6.1 1996-11-25 [FBD] (sendmail security release)
564 FreeBSD 2.1.7 1997-02-20 [FBD]
565 BSD/OS 3.0 1997-02-xx [BSDI] 4.4 lite2 based
566 FreeBSD 2.2.0 1997-03-16 [FBD]
567 FreeBSD 2.2.1 1997-03-25 [FBD]
568 FreeBSD 2.2.2 1997-05-16 [FBD]
569 NetBSD 1.2.1 1997-05-20 [NBD] (patch release)
570 OpenBSD 2.1 1997-06-01 [OBD]
571 FreeBSD 2.2.5 1997-10-22 [FBD]
572 OpenBSD 2.2 1997-12-01 [OBD]
573 NetBSD 1.3 1998-01-04 [NBD]
574 FreeBSD 2.2.6 1998-03-25 [FBD]
575 NetBSD 1.3.1 1998-03-09 [NBD] (patch release)
576 BSD/OS 3.1 1998-03-xx [BSDI]
577 OpenBSD 2.3 1998-05-19 [OBD]
578 NetBSD 1.3.2 1998-05-29 [NBD] (patch release)
579 FreeBSD 2.2.7 1998-07-22 [FBD]
580 BSD/OS 4.0 1998-08-xx [BSDI]
581 2-lock MP support, ELF executables
582 FreeBSD 3.0 1998-10-16 [FBD]
583 FreeBSD-3.0 is a snapshot from -current,
584 while 3.1 and 3.2 are from 3.x-stable which
585 was branched quite some time after 3.0-release
586 FreeBSD 2.2.8 1998-11-29 [FBD]
587 OpenBSD 2.4 1998-12-01 [OBD]
588 NetBSD 1.3.3 1998-12-23 [NBD] (patch release)
589 FreeBSD 3.1 1999-02-15 [FBD]
590 BSD/OS 4.0.1 1999-03-xx [BSDI]
591 NetBSD 1.4 1999-05-12 [NBD]
592 FreeBSD 3.2 1999-05-17 [FBD]
593 OpenBSD 2.5 1999-05-19 [OBD]
594 NetBSD 1.4.1 1999-08-26 [NBD] (patch release)
595 FreeBSD 3.3 1999-09-17 [FBD]
596 OpenBSD 2.6 1999-12-01 [OBD]
597 FreeBSD 3.4 1999-12-20 [FBD]
598 BSD/OS 4.1 1999-12-xx [BSDI]
599 FreeBSD 4.0 2000-03-13 [FBD]
600 NetBSD 1.4.2 2000-03-19 [NBD] (patch release)
601 OpenBSD 2.7 2000-06-15 [OBD]
602 FreeBSD 3.5 2000-06-24 [FBD]
603 FreeBSD 4.1 2000-07-27 [FBD]
604 FreeBSD 3.5.1 2000-07-28 [FBD]
605 FreeBSD 4.1.1 2000-09-25 [FBD] (a network-only patch release)
606 FreeBSD 4.2 2000-11-21 [FBD]
607 NetBSD 1.4.3 2000-11-25 [NBD] (patch release)
608 BSD/OS 4.2 2000-11-29 [BSDI]
609 OpenBSD 2.8 2000-12-01 [OBD]
610 NetBSD 1.5 2000-12-06 [NBD]
611 Mac OS X 10.0 2001-03-24 [APL]
612 FreeBSD 4.3 2001-04-20 [FBD]
613 OpenBSD 2.9 2001-06-01 [OBD]
614 NetBSD 1.5.1 2001-07-11 [NBD] (patch release)
615 NetBSD 1.5.2 2001-09-13 [NBD] (patch release)
616 FreeBSD 4.4 2001-09-18 [FBD]
617 Mac OS X 10.1 2001-09-29 [APL]
618 OpenBSD 3.0 2001-12-01 [OBD]
619 FreeBSD 4.5 2002-01-29 [FBD]
620 BSD/OS 4.3 2002-03-14 [WRS]
621 OpenBSD 3.1 2002-05-19 [OBD]
622 FreeBSD 4.6 2002-06-15 [FBD]
623 NetBSD 1.5.3 2002-07-22 [NBD] (patch release)
624 FreeBSD 4.6.2 2002-08-15 [FBD] (patch release)
625 Mac OS X 10.2 2002-08-23 [APL]
626 NetBSD 1.6 2002-09-14 [NBD]
627 FreeBSD 4.7 2002-10-08 [FBD]
628 OpenBSD 3.2 2002-11-01 [OBD]
629 FreeBSD 5.0 2003-01-17 [FBD]
630 FreeBSD 5.0 is a separate branch off of
631 -current, similar to 3.0.
632 FreeBSD 4.8 2003-04-03 [FBD]
633 NetBSD 1.6.1 2003-04-21 [NBD] (patch release)
634 OpenBSD 3.3 2003-05-01 [OBD]
635 BSD/OS 5.0 2003-05-?? [WRS]
636 FreeBSD 5.1 2003-06-09 [FBD]
637 Mac OS X 10.3 2003-10-24 [APL]
638 FreeBSD 4.9 2003-10-28 [FBD]
639 BSD/OS 5.1 ISE 2003-10-?? [WRS] (final version)
640 OpenBSD 3.4 2003-11-01 [OBD]
641 FreeBSD 5.2 2004-01-12 [FBD]
642 FreeBSD 5.2.1 2004-02-22 [FBD] (patch release)
643 NetBSD 1.6.2 2004-03-01 [NBD] (patch release)
644 OpenBSD 3.5 2004-04-01 [OBD]
645 FreeBSD 4.10 2004-05-27 [FBD]
646 DragonFly 1.0 2004-07-12 [DFB]
647 OpenBSD 3.6 2004-10-29 [OBD]
648 FreeBSD 5.3 2004-11-06 [FBD]
649 NetBSD 2.0 2004-12-09 [NBD]
650 FreeBSD 4.11 2005-01-25 [FBD]
651 DragonFly 1.2.0 2005-04-08 [DFB]
652 NetBSD 2.0.2 2005-04-14 [NBD] (security/critical release)
653 Mac OS X 10.4 2005-04-29 [APL]
654 FreeBSD 5.4 2005-05-09 [FBD]
655 OpenBSD 3.7 2005-05-19 [OBD]
656 NetBSD 2.0.3 2005-10-31 [NBD] (security/critical release)
657 OpenBSD 3.8 2005-11-01 [OBD]
658 FreeBSD 6.0 2005-11-01 [FBD]
659 NetBSD 2.1 2005-11-02 [NBD]
660 NetBSD 3.0 2005-12-23 [NBD]
661 DragonFly 1.4.0 2006-01-08 [DFB]
662 FreeBSD 2.2.9 2006-04-01 [FBD]
663 OpenBSD 3.9 2006-05-01 [OBD]
664 FreeBSD 6.1 2006-05-08 [FBD]
665 FreeBSD 5.5 2006-05-25 [FBD]
666 NetBSD 3.0.1 2006-07-24 [NBD] (security/critical release)
667 DragonFly 1.6.0 2006-07-24 [DFB]
668 OpenBSD 4.0 2006-11-01 [OBD]
669 NetBSD 3.0.2 2006-11-04 [NBD] (security/critical release)
670 NetBSD 3.1 2006-11-04 [NBD]
671 FreeBSD 6.2 2007-01-15 [FBD]
672 DragonFly 1.8.0 2007-01-30 [DFB]
673 OpenBSD 4.1 2007-05-01 [OBD]
674 DragonFly 1.10.0 2007-08-06 [DFB]
675 Mac OS X 10.5 2007-10-26 [APL]
676 OpenBSD 4.2 2007-11-01 [OBD]
677 NetBSD 4.0 2007-12-19 [NBD]
678 FreeBSD 6.3 2008-01-18 [FBD]
679 DragonFly 1.12.0 2008-02-26 [DFB]
680 FreeBSD 7.0 2008-02-27 [FBD]
681 OpenBSD 4.3 2008-05-01 [OBD]
682 DragonFly 2.0.0 2008-07-21 [DFB]
683 OpenBSD 4.4 2008-11-01 [OBD]
684 FreeBSD 6.4 2008-11-28 [FBD]
685 FreeBSD 7.1 2009-01-04 [FBD]
686 DragonFly 2.2.0 2009-02-17 [DFB]
687 NetBSD 5.0 2009-04-29 [NBD]
688 OpenBSD 4.5 2009-05-01 [OBD]
689 FreeBSD 7.2 2009-05-04 [FBD]
690 Mac OS X 10.6 2009-06-08 [APL]
691 NetBSD 5.0.1 2009-08-02 [NBD] (security/critical release)
692 DragonFly 2.4.0 2009-09-16 [DFB]
693 OpenBSD 4.6 2009-10-18 [OBD]
694 FreeBSD 8.0 2009-11-26 [FBD]
695 NetBSD 5.0.2 2010-02-12 [NBD] (security/critical release)
696 FreeBSD 7.3 2010-03-23 [FBD]
697 DragonFly 2.6.0 2010-03-28 [DFB]
698 OpenBSD 4.7 2010-05-19 [OBD]
699 FreeBSD 8.1 2010-07-24 [FBD]
700 DragonFly 2.8.2 2010-10-30 [DFB]
701 OpenBSD 4.8 2010-11-01 [OBD]
702 NetBSD 5.1 2010-11-19 [NBD]
703 FreeBSD 7.4 2011-02-24 [FBD]
704 FreeBSD 8.2 2011-02-24 [FBD]
705 DragonFly 2.10.1 2011-04-26 [DFB]
706 OpenBSD 4.9 2011-05-01 [OBD]
707 Mac OS X 10.7 2011-07-20 [APL]
708 OpenBSD 5.0 2011-11-01 [OBD]
709 FreeBSD 9.0 2012-01-12 [FBD]
710 NetBSD 5.1.2 2012-02-02 [NBD] (security/critical release)
711 DragonFly 3.0.1 2012-02-21 [DFB]
712 FreeBSD 8.3 2012-04-18 [FBD]
713 OpenBSD 5.1 2012-05-01 [OBD]
714 Mac OS X 10.8 2012-07-25 [APL]
715 NetBSD 6.0 2012-10-17 [NBD]
716 OpenBSD 5.2 2012-11-01 [OBD]
717 DragonFly 3.2.1 2012-11-02 [DFB]
718 NetBSD 5.2 2012-12-03 [NBD]
719 NetBSD 6.0.1 2012-12-26 [NBD] (security/critical release)
720 FreeBSD 9.1 2012-12-30 [FBD]
721 DragonFly 3.4.1 2013-04-29 [DFB]
722 OpenBSD 5.3 2013-05-01 [OBD]
723 NetBSD 6.0.2 2013-05-18 [NBD] (security/critical release)
724 NetBSD 6.1 2013-05-18 [NBD]
725 FreeBSD 8.4 2013-06-07 [FBD]
726 NetBSD 6.1.1 2013-08-22 [NBD]
727 NetBSD 5.1.3 2013-09-29 [NBD]
728 NetBSD 5.2.1 2013-09-29 [NBD]
729 FreeBSD 9.2 2013-09-30 [FBD]
730 NetBSD 6.0.3 2013-09-30 [NBD]
731 NetBSD 6.1.2 2013-09-30 [NBD]
732 Mac OS X 10.9 2013-10-22 [APL]
733 OpenBSD 5.4 2013-11-01 [OBD]
734 DragonFly 3.6.0 2013-11-25 [DFB]
735 FreeBSD 10.0 2014-01-20 [FBD]
736 NetBSD 5.1.4 2014-01-25 [NBD]
737 NetBSD 5.2.2 2014-01-25 [NBD]
738 NetBSD 6.0.4 2014-01-25 [NBD]
739 NetBSD 6.1.3 2014-01-25 [NBD]
740 DragonFly 3.6.1 2014-02-22 [DFB]
741 DragonFly 3.6.2 2014-04-10 [DFB]
742 NetBSD 6.0.5 2014-04-12 [NBD]
743 NetBSD 6.1.4 2014-04-12 [NBD]
744 OpenBSD 5.5 2014-05-01 [OBD]
745 DragonFly 3.8.0 2014-06-04 [DFB]
746 DragonFly 3.8.1 2014-06-16 [DFB]
747 DragonFly 3.6.3 2014-06-17 [DFB]
748 FreeBSD 9.3 2014-07-05 [FBD]
749 DragonFly 3.8.2 2014-08-08 [DFB]
750 NetBSD 6.0.6 2014-09-22 [NBD]
751 NetBSD 6.1.5 2014-09-22 [NBD]
752 Mac OS X 10.10 2014-10-16 [APL]
753 OpenBSD 5.6 2014-11-01 [OBD]
754 FreeBSD 10.1 2014-11-14 [FBD]
755 DragonFly 4.0.1 2014-11-25 [DFB]
756 DragonFly 4.0.2 2015-01-07 [DFB]
757 DragonFly 4.0.3 2015-01-21 [DFB]
758 DragonFly 4.0.4 2015-03-09 [DFB]
759 DragonFly 4.0.5 2015-03-23 [DFB]
760 OpenBSD 5.7 2015-05-01 [OBD]
761 DragonFly 4.2.0 2015-06-29 [DFB]
762 FreeBSD 10.2 2015-08-13 [FBD]
763 NetBSD 7.0 2015-09-25 [NBD]
764 OS X 10.11 2015-09-30 [APL]
765 OpenBSD 5.8 2015-10-18 [OBD]
766 DragonFly 4.4.1 2015-12-07 [DFB]
767 OpenBSD 5.9 2016-03-29 [OBD]
768 FreeBSD 10.3 2016-04-04 [FBD]
769 NetBSD 7.0.1 2016-05-22 [NBD]
770 DragonFly 4.6.0 2016-08-02 [DFB]
771 OpenBSD 6.0 2016-09-01 [OBD]
772 macOS 10.12 2016-09-20 [APL]
773 FreeBSD 11.0 2016-10-10 [FBD]
774 NetBSD 7.0.2 2016-10-21 [NBD]
775 NetBSD 7.1 2017-03-11 [NBD]
776 DragonFly 4.8.0 2017-03-27 [DFB]
777 OpenBSD 6.1 2017-04-11 [OBD]
778 FreeBSD 11.1 2017-07-26 [FBD]
779 macOS 10.13 2017-09-25 [APL]
780 FreeBSD 10.4 2017-10-03 [FBD]
781 OpenBSD 6.2 2017-10-09 [OBD]
782 DragonFly 5.0.0 2017-10-16 [DFB]
783 DragonFly 5.0.1 2017-11-06 [DFB]
784 DragonFly 5.0.2 2017-12-04 [DFB]
785 NetBSD 7.1.1 2017-12-22 [NBD]
786 NetBSD 7.1.2 2018-03-15 [NBD]
787 OpenBSD 6.3 2018-04-02 [OBD]
788 DragonFly 5.2.0 2018-04-10 [DFB]
789 DragonFly 5.2.1 2018-05-20 [DFB]
790 DragonFly 5.2.2 2018-06-18 [DFB]
791 FreeBSD 11.2 2018-06-27 [FBD]
792 NetBSD 8.0 2018-07-17 [NBD]
793 NetBSD 7.2 2018-08-29 [NBD]
794 macOS 10.14 2018-09-24 [APL]
795 OpenBSD 6.4 2018-10-18 [OBD]
796 DragonFly 5.4.0 2018-12-03 [DFB]
797 FreeBSD 12.0 2018-12-11 [FBD]
798 DragonFly 5.4.1 2018-12-24 [DFB]
799 OpenBSD 6.5 2019-05-01 [OBD]
800 NetBSD 8.1 2019-06-04 [NBD]
801 DragonFly 5.6 2019-06-17 [DFB]
802 DragonFly 5.6.1 2019-06-19 [DFB]
803 FreeBSD 11.3 2019-07-09 [FBD]
804 DragonFly 5.6.2 2019-08-11 [DFB]
805 OpenBSD 6.6 2019-10-17 [OBD]
806 macOS 10.15 2019-10-07 [APL]
807 macOS 10.15.1 2019-10-29 [APL] (security/critical release)
808 FreeBSD 12.1 2019-11-04 [FBD]
809 NetBSD 9.0 2020-02-14 [NBD]
810 DragonFly 5.8 2020-03-03 [DFB]
811 DragonFly 5.6.3 2020-03-11 [DFB]
812 NetBSD 8.2 2020-03-31 [NBD]
813 FreeBSD 12.2 2020-10-27 [FBD]
816 ------------------------
818 Leffler, Samuel J., Marshall Kirk McKusick, Michael J Karels and John
819 Quarterman. The Design and Implementation of the 4.3BSD UNIX Operating
820 System. Reading, Mass. Addison-Wesley, 1989. ISBN 0-201-06196-1
822 Salus, Peter H. A quarter century of UNIX. Addison-Wesley Publishing
823 Company, Inc., 1994. ISBN 0-201-54777-5
825 McKusick, Marshall Kirk, Keith Bostic, Michael J Karels, and John
826 Quarterman. The Design and Implementation of the 4.4BSD Operating
827 System. Reading, Mass. Addison-Wesley, 1996. ISBN 0-201-54979-4
829 McKusick, Marshall Kirk, George Neville-Neil. The Design and
830 Implementation of the FreeBSD Operating System.
831 Addison-Wesley Professional, Published: Aug 2, 2004. ISBN 0-201-70245-2
833 McKusick, Marshall Kirk, George Neville-Neil, Robert Watson. The
834 Design and Implementation of the FreeBSD Operating System, 2nd Edition.
835 Pearson Education, Inc., 2014. ISBN 0-321-96897-2
837 Doug McIlroy. Research Unix Reader.
839 Michael G. Brown. The Role of BSD in the Development of Unix.
840 Presented to the Tasmanian Unix Special Interest Group of the
841 Australian Computer Society, Hobart, August 1993.
843 Peter H. Salus. Unix at 25. Byte Magazine, October 1994.
844 URL: http://www.byte.com/art/9410/sec8/art3.htm
846 Andreas Klemm, Lars Köller. If you're going to San Francisco ...
847 Die freien BSD-Varianten von Unix. c't April 1997, page 368ff.
849 BSD Release Announcements collection.
850 URL: https://www.FreeBSD.org/releases/
852 BSD Hypertext Man Pages
853 URL: https://www.FreeBSD.org/cgi/man.cgi
855 UNIX history graphing project
856 URL: http://minnie.tuhs.org/Unix_History/index.html
859 URL: http://www.levenez.com/unix/
861 James Howard: The BSD Family Tree
862 URL: http://ezine.daemonnews.org/200104/bsd_family.html
863 ("what are the differences between FreeBSD, NetBSD, and OpenBSD?")
869 Josh Gilliam for suggestions, bug fixes, and finding very old
870 original BSD announcements from Usenet or tapes.
872 Steven M. Schultz for providing 2.8BSD, 2.10BSD, 2.11BSD manual pages.
875 Copyright (c) 1997-2012 Wolfram Schneider <wosch@FreeBSD.ORG>
876 URL: https://svnweb.freebsd.org/base/head/share/misc/bsd-family-tree