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 | | | | | 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]
481 PDP-11, Pascal, ex(1)
482 30 free copies of 1BSD sent out
483 35 tapes sold for 50 USD [QCU]
484 2BSD mid 1978 [QCU] 1979-05-10 [TUHS]
485 75 2BSD tapes shipped
486 2.79BSD 1980-04-xx [TUHS]
487 2.8BSD 1981-07-xx [KSJ]
489 2.8.1BSD 1982-01-xx [QCU]
490 set of performance improvements
491 2.9BSD 1983-07-xx [KSJ]
492 2.9.1BSD 1983-11-xx [TUHS]
493 2.9BSD-Seismo 1985-08-xx [SMS]
494 2.10BSD 1987-04-xx [KKK]
495 2.10.1BSD 1989-01-xx [SMS]
496 2.11BSD 1991-03-14 [SMS]
497 2.11BSD rev #430 1999-12-13 [SMS]
499 32V 1978-1[01]-xx [QCU] 1979-03-26 [TUHS]
500 3BSD late 1979 [QCU] March 1980 [TUHS]
501 virtual memory, page replacement,
504 4.1BSD 1981-07-08 [DOC]
506 alpha release, 100 sites, networking [44B]
507 4.1bBSD internal release, fast filesystem [44B]
509 beta release, IPC [44B]
510 4.2BSD 1983-09-xx [QCU]
512 4.3BSD 1986-06-xx [QCU]
513 1986-04-05 [KB], [DOC]
514 4.3BSD Tahoe 1988-06-15 [QCU], [DOC]
515 4.3BSD NET/1 1988-11-xx [QCU]
517 4.3BSD Reno 1990-06-29 [QCU], [DOC]
518 4.3BSD NET/2 1991-06-28 [QCU], [DOC]
520 BSD/386 ALPHA 1991-12-xx [BSDI]
521 first code released to people outside BSDI
522 386BSD 0.0 1992-02-xx [DOC]
523 BSD/386 0.3.1 1992-04-xx [BSDI] first ext. beta; B customers
524 BSD/386 0.3.3 1992-06-xx [BSDI] first CDROM version
525 386BSD 0.1 1992-07-28 [DOC]
526 4.4BSD Alpha 1992-07-07
527 BSD/386 0.9.3 1992-10-xx [BSDI]
528 first external gamma; G customers
529 BSD/386 0.9.4 1992-12-xx [BSDI]
530 would have been 1.0 except for request
531 for preliminary injunction
532 BSD/386 1.0 1993-03-xx [BSDI]
533 injunction denied; first official release
534 NetBSD 0.8 1993-04-20 [NBD]
535 4.4BSD 1993-06-01 [USE]
536 NetBSD 0.9 1993-08-23 [NBD]
537 FreeBSD 1.0 1993-11-01 [FBD]
538 FreeBSD 1.0.2 1993-11-14 [FBD]
539 supersedes 1.0 13 days after release.
540 BSD/386 1.1 1994-02-xx [BSDI]
541 4.4BSD Lite 1994-03-01 [USE]
542 FreeBSD 1.1 1994-05-07 [FBD]
543 FreeBSD 1.1.5 1994-06-30 [FBD]
544 FreeBSD 1.1.5.1 1994-07-05 [FBD]
545 supersedes 1.1.5 5 days after release.
546 NetBSD 1.0 1994-10-26 [NBD]
547 386BSD 1.0 1994-11-12 [USE]
548 FreeBSD 2.0 1994-11-23 [FBD]
549 BSD/OS 2.0 1995-01-xx [BSDI] 4.4 lite based
550 FreeBSD 2.0.5 1995-06-10 [FBD]
551 BSD/OS 2.0.1 1995-06-xx [BSDI]
552 4.4BSD Lite Release 2 1995-06-xx [44B]
553 the true final distribution from the CSRG
554 FreeBSD 2.1.0 1995-11-19 [FBD]
555 NetBSD 1.1 1995-11-26 [NBD]
556 BSD/OS 2.1 1996-01-xx [BSDI]
557 FreeBSD 2.1.5 1996-07-14 [FBD]
558 NetBSD 1.2 1996-10-04 [NBD]
559 OpenBSD 2.0 1996-10-18 [OBD]
560 FreeBSD 2.1.6 1996-11-16 [FBD]
561 FreeBSD 2.1.6.1 1996-11-25 [FBD] (sendmail security release)
563 FreeBSD 2.1.7 1997-02-20 [FBD]
564 BSD/OS 3.0 1997-02-xx [BSDI] 4.4 lite2 based
565 FreeBSD 2.2.0 1997-03-16 [FBD]
566 FreeBSD 2.2.1 1997-03-25 [FBD]
567 FreeBSD 2.2.2 1997-05-16 [FBD]
568 NetBSD 1.2.1 1997-05-20 [NBD] (patch release)
569 OpenBSD 2.1 1997-06-01 [OBD]
570 FreeBSD 2.2.5 1997-10-22 [FBD]
571 OpenBSD 2.2 1997-12-01 [OBD]
572 NetBSD 1.3 1998-01-04 [NBD]
573 FreeBSD 2.2.6 1998-03-25 [FBD]
574 NetBSD 1.3.1 1998-03-09 [NBD] (patch release)
575 BSD/OS 3.1 1998-03-xx [BSDI]
576 OpenBSD 2.3 1998-05-19 [OBD]
577 NetBSD 1.3.2 1998-05-29 [NBD] (patch release)
578 FreeBSD 2.2.7 1998-07-22 [FBD]
579 BSD/OS 4.0 1998-08-xx [BSDI]
580 2-lock MP support, ELF executables
581 FreeBSD 3.0 1998-10-16 [FBD]
582 FreeBSD-3.0 is a snapshot from -current,
583 while 3.1 and 3.2 are from 3.x-stable which
584 was branched quite some time after 3.0-release
585 FreeBSD 2.2.8 1998-11-29 [FBD]
586 OpenBSD 2.4 1998-12-01 [OBD]
587 NetBSD 1.3.3 1998-12-23 [NBD] (patch release)
588 FreeBSD 3.1 1999-02-15 [FBD]
589 BSD/OS 4.0.1 1999-03-xx [BSDI]
590 NetBSD 1.4 1999-05-12 [NBD]
591 FreeBSD 3.2 1999-05-17 [FBD]
592 OpenBSD 2.5 1999-05-19 [OBD]
593 NetBSD 1.4.1 1999-08-26 [NBD] (patch release)
594 FreeBSD 3.3 1999-09-17 [FBD]
595 OpenBSD 2.6 1999-12-01 [OBD]
596 FreeBSD 3.4 1999-12-20 [FBD]
597 BSD/OS 4.1 1999-12-xx [BSDI]
598 FreeBSD 4.0 2000-03-13 [FBD]
599 NetBSD 1.4.2 2000-03-19 [NBD] (patch release)
600 OpenBSD 2.7 2000-06-15 [OBD]
601 FreeBSD 3.5 2000-06-24 [FBD]
602 FreeBSD 4.1 2000-07-27 [FBD]
603 FreeBSD 3.5.1 2000-07-28 [FBD]
604 FreeBSD 4.1.1 2000-09-25 [FBD] (a network-only patch release)
605 FreeBSD 4.2 2000-11-21 [FBD]
606 NetBSD 1.4.3 2000-11-25 [NBD] (patch release)
607 BSD/OS 4.2 2000-11-29 [BSDI]
608 OpenBSD 2.8 2000-12-01 [OBD]
609 NetBSD 1.5 2000-12-06 [NBD]
610 Mac OS X 10.0 2001-03-24 [APL]
611 FreeBSD 4.3 2001-04-20 [FBD]
612 OpenBSD 2.9 2001-06-01 [OBD]
613 NetBSD 1.5.1 2001-07-11 [NBD] (patch release)
614 NetBSD 1.5.2 2001-09-13 [NBD] (patch release)
615 FreeBSD 4.4 2001-09-18 [FBD]
616 Mac OS X 10.1 2001-09-29 [APL]
617 OpenBSD 3.0 2001-12-01 [OBD]
618 FreeBSD 4.5 2002-01-29 [FBD]
619 BSD/OS 4.3 2002-03-14 [WRS]
620 OpenBSD 3.1 2002-05-19 [OBD]
621 FreeBSD 4.6 2002-06-15 [FBD]
622 NetBSD 1.5.3 2002-07-22 [NBD] (patch release)
623 FreeBSD 4.6.2 2002-08-15 [FBD] (patch release)
624 Mac OS X 10.2 2002-08-23 [APL]
625 NetBSD 1.6 2002-09-14 [NBD]
626 FreeBSD 4.7 2002-10-08 [FBD]
627 OpenBSD 3.2 2002-11-01 [OBD]
628 FreeBSD 5.0 2003-01-17 [FBD]
629 FreeBSD 5.0 is a separate branch off of
630 -current, similar to 3.0.
631 FreeBSD 4.8 2003-04-03 [FBD]
632 NetBSD 1.6.1 2003-04-21 [NBD] (patch release)
633 OpenBSD 3.3 2003-05-01 [OBD]
634 BSD/OS 5.0 2003-05-?? [WRS]
635 FreeBSD 5.1 2003-06-09 [FBD]
636 Mac OS X 10.3 2003-10-24 [APL]
637 FreeBSD 4.9 2003-10-28 [FBD]
638 BSD/OS 5.1 ISE 2003-10-?? [WRS] (final version)
639 OpenBSD 3.4 2003-11-01 [OBD]
640 FreeBSD 5.2 2004-01-12 [FBD]
641 FreeBSD 5.2.1 2004-02-22 [FBD] (patch release)
642 NetBSD 1.6.2 2004-03-01 [NBD] (patch release)
643 OpenBSD 3.5 2004-04-01 [OBD]
644 FreeBSD 4.10 2004-05-27 [FBD]
645 DragonFly 1.0 2004-07-12 [DFB]
646 OpenBSD 3.6 2004-10-29 [OBD]
647 FreeBSD 5.3 2004-11-06 [FBD]
648 NetBSD 2.0 2004-12-09 [NBD]
649 FreeBSD 4.11 2005-01-25 [FBD]
650 DragonFly 1.2.0 2005-04-08 [DFB]
651 NetBSD 2.0.2 2005-04-14 [NBD] (security/critical release)
652 Mac OS X 10.4 2005-04-29 [APL]
653 FreeBSD 5.4 2005-05-09 [FBD]
654 OpenBSD 3.7 2005-05-19 [OBD]
655 NetBSD 2.0.3 2005-10-31 [NBD] (security/critical release)
656 OpenBSD 3.8 2005-11-01 [OBD]
657 FreeBSD 6.0 2005-11-01 [FBD]
658 NetBSD 2.1 2005-11-02 [NBD]
659 NetBSD 3.0 2005-12-23 [NBD]
660 DragonFly 1.4.0 2006-01-08 [DFB]
661 FreeBSD 2.2.9 2006-04-01 [FBD]
662 OpenBSD 3.9 2006-05-01 [OBD]
663 FreeBSD 6.1 2006-05-08 [FBD]
664 FreeBSD 5.5 2006-05-25 [FBD]
665 NetBSD 3.0.1 2006-07-24 [NBD] (security/critical release)
666 DragonFly 1.6.0 2006-07-24 [DFB]
667 OpenBSD 4.0 2006-11-01 [OBD]
668 NetBSD 3.0.2 2006-11-04 [NBD] (security/critical release)
669 NetBSD 3.1 2006-11-04 [NBD]
670 FreeBSD 6.2 2007-01-15 [FBD]
671 DragonFly 1.8.0 2007-01-30 [DFB]
672 OpenBSD 4.1 2007-05-01 [OBD]
673 DragonFly 1.10.0 2007-08-06 [DFB]
674 Mac OS X 10.5 2007-10-26 [APL]
675 OpenBSD 4.2 2007-11-01 [OBD]
676 NetBSD 4.0 2007-12-19 [NBD]
677 FreeBSD 6.3 2008-01-18 [FBD]
678 DragonFly 1.12.0 2008-02-26 [DFB]
679 FreeBSD 7.0 2008-02-27 [FBD]
680 OpenBSD 4.3 2008-05-01 [OBD]
681 DragonFly 2.0.0 2008-07-21 [DFB]
682 OpenBSD 4.4 2008-11-01 [OBD]
683 FreeBSD 6.4 2008-11-28 [FBD]
684 FreeBSD 7.1 2009-01-04 [FBD]
685 DragonFly 2.2.0 2009-02-17 [DFB]
686 NetBSD 5.0 2009-04-29 [NBD]
687 OpenBSD 4.5 2009-05-01 [OBD]
688 FreeBSD 7.2 2009-05-04 [FBD]
689 Mac OS X 10.6 2009-06-08 [APL]
690 NetBSD 5.0.1 2009-08-02 [NBD] (security/critical release)
691 DragonFly 2.4.0 2009-09-16 [DFB]
692 OpenBSD 4.6 2009-10-18 [OBD]
693 FreeBSD 8.0 2009-11-26 [FBD]
694 NetBSD 5.0.2 2010-02-12 [NBD] (security/critical release)
695 FreeBSD 7.3 2010-03-23 [FBD]
696 DragonFly 2.6.0 2010-03-28 [DFB]
697 OpenBSD 4.7 2010-05-19 [OBD]
698 FreeBSD 8.1 2010-07-24 [FBD]
699 DragonFly 2.8.2 2010-10-30 [DFB]
700 OpenBSD 4.8 2010-11-01 [OBD]
701 NetBSD 5.1 2010-11-19 [NBD]
702 FreeBSD 7.4 2011-02-24 [FBD]
703 FreeBSD 8.2 2011-02-24 [FBD]
704 DragonFly 2.10.1 2011-04-26 [DFB]
705 OpenBSD 4.9 2011-05-01 [OBD]
706 Mac OS X 10.7 2011-07-20 [APL]
707 OpenBSD 5.0 2011-11-01 [OBD]
708 FreeBSD 9.0 2012-01-12 [FBD]
709 NetBSD 5.1.2 2012-02-02 [NBD] (security/critical release)
710 DragonFly 3.0.1 2012-02-21 [DFB]
711 FreeBSD 8.3 2012-04-18 [FBD]
712 OpenBSD 5.1 2012-05-01 [OBD]
713 Mac OS X 10.8 2012-07-25 [APL]
714 NetBSD 6.0 2012-10-17 [NBD]
715 OpenBSD 5.2 2012-11-01 [OBD]
716 DragonFly 3.2.1 2012-11-02 [DFB]
717 NetBSD 5.2 2012-12-03 [NBD]
718 NetBSD 6.0.1 2012-12-26 [NBD] (security/critical release)
719 FreeBSD 9.1 2012-12-30 [FBD]
720 DragonFly 3.4.1 2013-04-29 [DFB]
721 OpenBSD 5.3 2013-05-01 [OBD]
722 NetBSD 6.0.2 2013-05-18 [NBD] (security/critical release)
723 NetBSD 6.1 2013-05-18 [NBD]
724 FreeBSD 8.4 2013-06-07 [FBD]
725 NetBSD 6.1.1 2013-08-22 [NBD]
726 NetBSD 5.1.3 2013-09-29 [NBD]
727 NetBSD 5.2.1 2013-09-29 [NBD]
728 FreeBSD 9.2 2013-09-30 [FBD]
729 NetBSD 6.0.3 2013-09-30 [NBD]
730 NetBSD 6.1.2 2013-09-30 [NBD]
731 Mac OS X 10.9 2013-10-22 [APL]
732 OpenBSD 5.4 2013-11-01 [OBD]
733 DragonFly 3.6.0 2013-11-25 [DFB]
734 FreeBSD 10.0 2014-01-20 [FBD]
735 NetBSD 5.1.4 2014-01-25 [NBD]
736 NetBSD 5.2.2 2014-01-25 [NBD]
737 NetBSD 6.0.4 2014-01-25 [NBD]
738 NetBSD 6.1.3 2014-01-25 [NBD]
739 DragonFly 3.6.1 2014-02-22 [DFB]
740 DragonFly 3.6.2 2014-04-10 [DFB]
741 NetBSD 6.0.5 2014-04-12 [NBD]
742 NetBSD 6.1.4 2014-04-12 [NBD]
743 OpenBSD 5.5 2014-05-01 [OBD]
744 DragonFly 3.8.0 2014-06-04 [DFB]
745 DragonFly 3.8.1 2014-06-16 [DFB]
746 DragonFly 3.6.3 2014-06-17 [DFB]
747 FreeBSD 9.3 2014-07-05 [FBD]
748 DragonFly 3.8.2 2014-08-08 [DFB]
749 NetBSD 6.0.6 2014-09-22 [NBD]
750 NetBSD 6.1.5 2014-09-22 [NBD]
751 Mac OS X 10.10 2014-10-16 [APL]
752 OpenBSD 5.6 2014-11-01 [OBD]
753 FreeBSD 10.1 2014-11-14 [FBD]
754 DragonFly 4.0.1 2014-11-25 [DFB]
755 DragonFly 4.0.2 2015-01-07 [DFB]
756 DragonFly 4.0.3 2015-01-21 [DFB]
757 DragonFly 4.0.4 2015-03-09 [DFB]
758 DragonFly 4.0.5 2015-03-23 [DFB]
759 OpenBSD 5.7 2015-05-01 [OBD]
760 DragonFly 4.2.0 2015-06-29 [DFB]
761 FreeBSD 10.2 2015-08-13 [FBD]
762 NetBSD 7.0 2015-09-25 [NBD]
763 OS X 10.11 2015-09-30 [APL]
764 OpenBSD 5.8 2015-10-18 [OBD]
765 DragonFly 4.4.1 2015-12-07 [DFB]
766 OpenBSD 5.9 2016-03-29 [OBD]
767 FreeBSD 10.3 2016-04-04 [FBD]
768 NetBSD 7.0.1 2016-05-22 [NBD]
769 DragonFly 4.6.0 2016-08-02 [DFB]
770 OpenBSD 6.0 2016-09-01 [OBD]
771 macOS 10.12 2016-09-20 [APL]
772 FreeBSD 11.0 2016-10-10 [FBD]
773 NetBSD 7.0.2 2016-10-21 [NBD]
774 NetBSD 7.1 2017-03-11 [NBD]
775 DragonFly 4.8.0 2017-03-27 [DFB]
776 OpenBSD 6.1 2017-04-11 [OBD]
777 FreeBSD 11.1 2017-07-26 [FBD]
778 macOS 10.13 2017-09-25 [APL]
779 FreeBSD 10.4 2017-10-03 [FBD]
780 OpenBSD 6.2 2017-10-09 [OBD]
781 DragonFly 5.0.0 2017-10-16 [DFB]
782 DragonFly 5.0.1 2017-11-06 [DFB]
783 DragonFly 5.0.2 2017-12-04 [DFB]
784 NetBSD 7.1.1 2017-12-22 [NBD]
785 NetBSD 7.1.2 2018-03-15 [NBD]
786 OpenBSD 6.3 2018-04-02 [OBD]
787 DragonFly 5.2.0 2018-04-10 [DFB]
788 DragonFly 5.2.1 2018-05-20 [DFB]
789 DragonFly 5.2.2 2018-06-18 [DFB]
790 FreeBSD 11.2 2018-06-27 [FBD]
791 NetBSD 8.0 2018-07-17 [NBD]
792 NetBSD 7.2 2018-08-29 [NBD]
793 macOS 10.14 2018-09-24 [APL]
794 OpenBSD 6.4 2018-10-18 [OBD]
795 DragonFly 5.4.0 2018-12-03 [DFB]
796 FreeBSD 12.0 2018-12-11 [FBD]
797 DragonFly 5.4.1 2018-12-24 [DFB]
798 OpenBSD 6.5 2019-05-01 [OBD]
799 NetBSD 8.1 2019-06-04 [NBD]
800 DragonFly 5.6 2019-06-17 [DFB]
801 DragonFly 5.6.1 2019-06-19 [DFB]
802 FreeBSD 11.3 2019-07-09 [FBD]
803 DragonFly 5.6.2 2019-08-11 [DFB]
804 OpenBSD 6.6 2019-10-17 [OBD]
805 macOS 10.15 2019-10-07 [APL]
806 macOS 10.15.1 2019-10-29 [APL] (security/critical release)
807 FreeBSD 12.1 2019-11-04 [FBD]
808 NetBSD 9.0 2020-02-14 [NBD]
809 DragonFly 5.8 2020-03-03 [DFB]
810 DragonFly 5.6.3 2020-03-11 [DFB]
811 NetBSD 8.2 2020-03-31 [NBD]
814 ------------------------
816 Leffler, Samuel J., Marshall Kirk McKusick, Michael J Karels and John
817 Quarterman. The Design and Implementation of the 4.3BSD UNIX Operating
818 System. Reading, Mass. Addison-Wesley, 1989. ISBN 0-201-06196-1
820 Salus, Peter H. A quarter century of UNIX. Addison-Wesley Publishing
821 Company, Inc., 1994. ISBN 0-201-54777-5
823 McKusick, Marshall Kirk, Keith Bostic, Michael J Karels, and John
824 Quarterman. The Design and Implementation of the 4.4BSD Operating
825 System. Reading, Mass. Addison-Wesley, 1996. ISBN 0-201-54979-4
827 McKusick, Marshall Kirk, George Neville-Neil. The Design and
828 Implementation of the FreeBSD Operating System.
829 Addison-Wesley Professional, Published: Aug 2, 2004. ISBN 0-201-70245-2
831 McKusick, Marshall Kirk, George Neville-Neil, Robert Watson. The
832 Design and Implementation of the FreeBSD Operating System, 2nd Edition.
833 Pearson Education, Inc., 2014. ISBN 0-321-96897-2
835 Doug McIlroy. Research Unix Reader.
837 Michael G. Brown. The Role of BSD in the Development of Unix.
838 Presented to the Tasmanian Unix Special Interest Group of the
839 Australian Computer Society, Hobart, August 1993.
841 Peter H. Salus. Unix at 25. Byte Magazine, October 1994.
842 URL: http://www.byte.com/art/9410/sec8/art3.htm
844 Andreas Klemm, Lars Köller. If you're going to San Francisco ...
845 Die freien BSD-Varianten von Unix. c't April 1997, page 368ff.
847 BSD Release Announcements collection.
848 URL: https://www.FreeBSD.org/releases/
850 BSD Hypertext Man Pages
851 URL: https://www.FreeBSD.org/cgi/man.cgi
853 UNIX history graphing project
854 URL: http://minnie.tuhs.org/Unix_History/index.html
857 URL: http://www.levenez.com/unix/
859 James Howard: The BSD Family Tree
860 URL: http://ezine.daemonnews.org/200104/bsd_family.html
861 ("what are the differences between FreeBSD, NetBSD, and OpenBSD?")
867 Josh Gilliam for suggestions, bug fixes, and finding very old
868 original BSD announcements from Usenet or tapes.
870 Steven M. Schultz for providing 2.8BSD, 2.10BSD, 2.11BSD manual pages.
873 Copyright (c) 1997-2012 Wolfram Schneider <wosch@FreeBSD.ORG>
874 URL: https://svnweb.freebsd.org/base/head/share/misc/bsd-family-tree