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 | |
262 | | | | | | NetBSD | |
263 | | | | | | 5.1.4 | |
264 | | | | | | OpenBSD 5.1 |
265 | | | Mac OS X | `----. | |
267 | | | | NetBSD 6.0 | | |
268 | | | | | | | | OpenBSD 5.2 DragonFly 3.2.1
269 | FreeBSD | | | | | NetBSD | |
270 | 9.1 | | | | | 5.2 | |
272 | | | | | | | NetBSD | |
273 | | | | | | | 5.2.1 | |
275 | | | | | | | NetBSD | |
276 | | | | | | | 5.2.2 | |
279 | | | | | | NetBSD | |
280 | | | | | | 6.0.1 | |
281 | | | | | | | OpenBSD 5.3 DragonFly 3.4.1
282 | | | | | | NetBSD | |
283 | | | | | | 6.0.2 | |
285 | | | | | | NetBSD | |
286 | | | | | | 6.0.3 | |
288 | | | | | | NetBSD | |
289 | | | | | | 6.0.4 | |
291 | | | | | | NetBSD | |
292 | | | | | | 6.0.5 | |
294 | | | | | | NetBSD | |
295 | | | | | | 6.0.6 | |
297 | | | | | |`-NetBSD 6.1 | |
298 | | FreeBSD | | | | |
299 | | 8.4 | | NetBSD 6.1.1 | |
301 | FreeBSD | | NetBSD 6.1.2 | |
302 | 9.2 Mac OS X | | | |
303 | | 10.9 | | OpenBSD 5.4 |
304 | `-----. | | | | DragonFly 3.6.0
306 *--FreeBSD | | | NetBSD 6.1.3 | |
308 | | | | | | | DragonFly 3.6.1
311 | | | | | | | DragonFly 3.6.2
312 | | | | | NetBSD 6.1.4 | |
314 | | | | | | OpenBSD 5.5 |
316 | | | | | | | DragonFly 3.8.0
319 | | | | | | | DragonFly 3.8.1
322 | | | | | | | DragonFly 3.6.3
324 | | FreeBSD | | | | |
326 | | | | NetBSD 6.1.5 | DragonFly 3.8.2
329 | | | | OpenBSD 5.6 |
331 | 10.1 | | | DragonFly 4.0.1
333 | | | | | DragonFly 4.0.2
335 | | | | | DragonFly 4.0.3
337 | | | | | DragonFly 4.0.4
339 | | | | | DragonFly 4.0.5
341 | | | | OpenBSD 5.7 |
342 | | | | | DragonFly 4.2.0
345 | | macOS NetBSD 7.0 | |
346 | | 10.11 | | | OpenBSD 5.8 |
347 | | | | | `--. | DragonFly 4.4.1
348 | FreeBSD | | | | OpenBSD 5.9 |
350 | | | | | NetBSD 7.0.1 | |
351 | `------. | | | | | DragonFly 4.6.0
354 *--FreeBSD | macOS | | | OpenBSD 6.0 |
355 | 11.0 | 10.12 | | NetBSD 7.0.2 | |
357 | | | | | *- NetBSD 7.1 | |
360 | | | macOS | | | DragonFly 4.8.0
361 | | | 10.13 | | OpenBSD 6.1 |
362 | FreeBSD | | | | | DragonFly 5.0.0
363 | 11.1 FreeBSD | | | | |
364 | | 10.4 | | | OpenBSD 6.2 DragonFly 5.0.1
366 | | | | NetBSD 7.1.1 | DragonFly 5.0.2
368 | | | | NetBSD 7.1.2 | |
370 | | | | | OpenBSD 6.3 |
371 | | | | | | DragonFly 5.2.0
373 | | | | | | DragonFly 5.2.1
375 | | | | | | DragonFly 5.2.2
376 | FreeBSD | | NetBSD 8.0 | |
380 FreeBSD 12 -current | NetBSD -current OpenBSD -current DragonFly -current
387 Time tolerance +/- 6 months, depending on which book/article you read; if it
388 was the announcement in Usenet or if it was available as tape.
390 [44B] McKusick, Marshall Kirk, Keith Bostic, Michael J Karels,
391 and John Quarterman. The Design and Implementation of
392 the 4.4BSD Operating System.
393 [APL] Apple website [https://www.apple.com/macosx/]
394 [BSDI] Berkeley Software Design, Inc.
395 [DFB] DragonFlyBSD Project, The.
396 [DOC] README, COPYRIGHT on tape.
397 [FBD] FreeBSD Project, The.
398 [KB] Keith Bostic. BSD2.10 available from Usenix. comp.unix.sources,
399 Volume 11, Info 4, April, 1987.
400 [KKK] Mike Karels, Kirk McKusick, and Keith Bostic. tahoe announcement.
401 comp.bugs.4bsd.ucb-fixes, June 15, 1988.
402 [KSJ] Michael J. Karels, Carl F. Smith, and William F. Jolitz.
403 Changes in the Kernel in 2.9BSD. Second Berkeley Software
404 Distribution UNIX Version 2.9, July, 1983.
405 [NBD] NetBSD Project, The.
406 [OBD] OpenBSD Project, The.
407 [QCU] Salus, Peter H. A quarter century of UNIX.
408 [SMS] Steven M. Schultz. 2.11BSD, UNIX for the PDP-11.
409 [TUHS] The Unix Historical Society. http://minnie.tuhs.org/Unix_History/.
410 [USE] Usenet announcement.
411 [WRS] Wind River Systems, Inc.
412 [dmr] Dennis Ritchie, via E-Mail
417 First Edition 1971-11-03 [QCU]
418 DEC PDP-11/20, Assembler
419 Second Edition 1972-06-12 [QCU]
420 10 UNIX installations
421 Third Edition 1973-02-xx [QCU]
422 Pipes, 16 installations
423 Fourth Edition 1973-11-xx [QCU]
424 rewriting in C effected,
425 above 30 installations
426 Fifth Edition 1974-06-xx [QCU]
427 above 50 installations
428 Sixth Edition 1975-05-xx [QCU]
430 Seventh Edition 1979-01-xx [QCU] 1979-01-10 [TUHS]
432 Eighth Edition 1985-02-xx [QCU]
433 VAX 11/750, VAX 11/780 [dmr]
434 descended from 4.1c BSD [dmr]
435 descended from 4.1 BSD [44B]
436 scooping-out and replacement of the character-device
437 and networking part by the streams mechanism
439 Ninth Edition 1986-09-xx [QCU]
440 Tenth Edition 1989-10-xx [QCU]
445 PDP-11, Pascal, ex(1)
446 30 free copies of 1BSD sent out
447 35 tapes sold for 50 USD [QCU]
448 2BSD mid 1978 [QCU] 1979-05-10 [TUHS]
449 75 2BSD tapes shipped
450 2.79BSD 1980-04-xx [TUHS]
451 2.8BSD 1981-07-xx [KSJ]
453 2.8.1BSD 1982-01-xx [QCU]
454 set of performance improvements
455 2.9BSD 1983-07-xx [KSJ]
456 2.9.1BSD 1983-11-xx [TUHS]
457 2.9BSD-Seismo 1985-08-xx [SMS]
458 2.10BSD 1987-04-xx [KKK]
459 2.10.1BSD 1989-01-xx [SMS]
460 2.11BSD 1991-03-14 [SMS]
461 2.11BSD rev #430 1999-12-13 [SMS]
463 32V 1978-1[01]-xx [QCU] 1979-03-26 [TUHS]
464 3BSD late 1979 [QCU] March 1980 [TUHS]
465 virtual memory, page replacement,
468 4.1BSD 1981-07-08 [DOC]
470 alpha release, 100 sites, networking [44B]
471 4.1bBSD internal release, fast filesystem [44B]
473 beta release, IPC [44B]
474 4.2BSD 1983-09-xx [QCU]
476 4.3BSD 1986-06-xx [QCU]
477 1986-04-05 [KB], [DOC]
478 4.3BSD Tahoe 1988-06-15 [QCU], [DOC]
479 4.3BSD NET/1 1988-11-xx [QCU]
481 4.3BSD Reno 1990-06-29 [QCU], [DOC]
482 4.3BSD NET/2 1991-06-28 [QCU], [DOC]
484 BSD/386 ALPHA 1991-12-xx [BSDI]
485 first code released to people outside BSDI
486 386BSD 0.0 1992-02-xx [DOC]
487 BSD/386 0.3.1 1992-04-xx [BSDI] first ext. beta; B customers
488 BSD/386 0.3.3 1992-06-xx [BSDI] first CDROM version
489 386BSD 0.1 1992-07-28 [DOC]
490 4.4BSD Alpha 1992-07-07
491 BSD/386 0.9.3 1992-10-xx [BSDI]
492 first external gamma; G customers
493 BSD/386 0.9.4 1992-12-xx [BSDI]
494 would have been 1.0 except for request
495 for preliminary injunction
496 BSD/386 1.0 1993-03-xx [BSDI]
497 injunction denied; first official release
498 NetBSD 0.8 1993-04-20 [NBD]
499 4.4BSD 1993-06-01 [USE]
500 NetBSD 0.9 1993-08-23 [NBD]
501 FreeBSD 1.0 1993-11-01 [FBD]
502 FreeBSD 1.0.2 1993-11-14 [FBD]
503 supersedes 1.0 13 days after release.
504 BSD/386 1.1 1994-02-xx [BSDI]
505 4.4BSD Lite 1994-03-01 [USE]
506 FreeBSD 1.1 1994-05-07 [FBD]
507 FreeBSD 1.1.5 1994-06-30 [FBD]
508 FreeBSD 1.1.5.1 1994-07-05 [FBD]
509 supersedes 1.1.5 5 days after release.
510 NetBSD 1.0 1994-10-26 [NBD]
511 386BSD 1.0 1994-11-12 [USE]
512 FreeBSD 2.0 1994-11-23 [FBD]
513 BSD/OS 2.0 1995-01-xx [BSDI] 4.4 lite based
514 FreeBSD 2.0.5 1995-06-10 [FBD]
515 BSD/OS 2.0.1 1995-06-xx [BSDI]
516 4.4BSD Lite Release 2 1995-06-xx [44B]
517 the true final distribution from the CSRG
518 FreeBSD 2.1.0 1995-11-19 [FBD]
519 NetBSD 1.1 1995-11-26 [NBD]
520 BSD/OS 2.1 1996-01-xx [BSDI]
521 FreeBSD 2.1.5 1996-07-14 [FBD]
522 NetBSD 1.2 1996-10-04 [NBD]
523 OpenBSD 2.0 1996-10-18 [OBD]
524 FreeBSD 2.1.6 1996-11-16 [FBD]
525 FreeBSD 2.1.6.1 1996-11-25 [FBD] (sendmail security release)
527 FreeBSD 2.1.7 1997-02-20 [FBD]
528 BSD/OS 3.0 1997-02-xx [BSDI] 4.4 lite2 based
529 FreeBSD 2.2.0 1997-03-16 [FBD]
530 FreeBSD 2.2.1 1997-03-25 [FBD]
531 FreeBSD 2.2.2 1997-05-16 [FBD]
532 NetBSD 1.2.1 1997-05-20 [NBD] (patch release)
533 OpenBSD 2.1 1997-06-01 [OBD]
534 FreeBSD 2.2.5 1997-10-22 [FBD]
535 OpenBSD 2.2 1997-12-01 [OBD]
536 NetBSD 1.3 1998-01-04 [NBD]
537 FreeBSD 2.2.6 1998-03-25 [FBD]
538 NetBSD 1.3.1 1998-03-09 [NBD] (patch release)
539 BSD/OS 3.1 1998-03-xx [BSDI]
540 OpenBSD 2.3 1998-05-19 [OBD]
541 NetBSD 1.3.2 1998-05-29 [NBD] (patch release)
542 FreeBSD 2.2.7 1998-07-22 [FBD]
543 BSD/OS 4.0 1998-08-xx [BSDI]
544 2-lock MP support, ELF executables
545 FreeBSD 3.0 1998-10-16 [FBD]
546 FreeBSD-3.0 is a snapshot from -current,
547 while 3.1 and 3.2 are from 3.x-stable which
548 was branched quite some time after 3.0-release
549 FreeBSD 2.2.8 1998-11-29 [FBD]
550 OpenBSD 2.4 1998-12-01 [OBD]
551 NetBSD 1.3.3 1998-12-23 [NBD] (patch release)
552 FreeBSD 3.1 1999-02-15 [FBD]
553 BSD/OS 4.0.1 1999-03-xx [BSDI]
554 NetBSD 1.4 1999-05-12 [NBD]
555 FreeBSD 3.2 1999-05-17 [FBD]
556 OpenBSD 2.5 1999-05-19 [OBD]
557 NetBSD 1.4.1 1999-08-26 [NBD] (patch release)
558 FreeBSD 3.3 1999-09-17 [FBD]
559 OpenBSD 2.6 1999-12-01 [OBD]
560 FreeBSD 3.4 1999-12-20 [FBD]
561 BSD/OS 4.1 1999-12-xx [BSDI]
562 FreeBSD 4.0 2000-03-13 [FBD]
563 NetBSD 1.4.2 2000-03-19 [NBD] (patch release)
564 OpenBSD 2.7 2000-06-15 [OBD]
565 FreeBSD 3.5 2000-06-24 [FBD]
566 FreeBSD 4.1 2000-07-27 [FBD]
567 FreeBSD 3.5.1 2000-07-28 [FBD]
568 FreeBSD 4.1.1 2000-09-25 [FBD] (a network-only patch release)
569 FreeBSD 4.2 2000-11-21 [FBD]
570 NetBSD 1.4.3 2000-11-25 [NBD] (patch release)
571 BSD/OS 4.2 2000-11-29 [BSDI]
572 OpenBSD 2.8 2000-12-01 [OBD]
573 NetBSD 1.5 2000-12-06 [NBD]
574 Mac OS X 10.0 2001-03-24 [APL]
575 FreeBSD 4.3 2001-04-20 [FBD]
576 OpenBSD 2.9 2001-06-01 [OBD]
577 NetBSD 1.5.1 2001-07-11 [NBD] (patch release)
578 NetBSD 1.5.2 2001-09-13 [NBD] (patch release)
579 FreeBSD 4.4 2001-09-18 [FBD]
580 Mac OS X 10.1 2001-09-29 [APL]
581 OpenBSD 3.0 2001-12-01 [OBD]
582 FreeBSD 4.5 2002-01-29 [FBD]
583 BSD/OS 4.3 2002-03-14 [WRS]
584 OpenBSD 3.1 2002-05-19 [OBD]
585 FreeBSD 4.6 2002-06-15 [FBD]
586 NetBSD 1.5.3 2002-07-22 [NBD] (patch release)
587 FreeBSD 4.6.2 2002-08-15 [FBD] (patch release)
588 Mac OS X 10.2 2002-08-23 [APL]
589 NetBSD 1.6 2002-09-14 [NBD]
590 FreeBSD 4.7 2002-10-08 [FBD]
591 OpenBSD 3.2 2002-11-01 [OBD]
592 FreeBSD 5.0 2003-01-17 [FBD]
593 FreeBSD 5.0 is a separate branch off of
594 -current, similar to 3.0.
595 FreeBSD 4.8 2003-04-03 [FBD]
596 NetBSD 1.6.1 2003-04-21 [NBD] (patch release)
597 OpenBSD 3.3 2003-05-01 [OBD]
598 BSD/OS 5.0 2003-05-?? [WRS]
599 FreeBSD 5.1 2003-06-09 [FBD]
600 Mac OS X 10.3 2003-10-24 [APL]
601 FreeBSD 4.9 2003-10-28 [FBD]
602 BSD/OS 5.1 ISE 2003-10-?? [WRS] (final version)
603 OpenBSD 3.4 2003-11-01 [OBD]
604 FreeBSD 5.2 2004-01-12 [FBD]
605 FreeBSD 5.2.1 2004-02-22 [FBD] (patch release)
606 NetBSD 1.6.2 2004-03-01 [NBD] (patch release)
607 OpenBSD 3.5 2004-04-01 [OBD]
608 FreeBSD 4.10 2004-05-27 [FBD]
609 DragonFly 1.0 2004-07-12 [DFB]
610 OpenBSD 3.6 2004-10-29 [OBD]
611 FreeBSD 5.3 2004-11-06 [FBD]
612 NetBSD 2.0 2004-12-09 [NBD]
613 FreeBSD 4.11 2005-01-25 [FBD]
614 DragonFly 1.2.0 2005-04-08 [DFB]
615 NetBSD 2.0.2 2005-04-14 [NBD] (security/critical release)
616 Mac OS X 10.4 2005-04-29 [APL]
617 FreeBSD 5.4 2005-05-09 [FBD]
618 OpenBSD 3.7 2005-05-19 [OBD]
619 NetBSD 2.0.3 2005-10-31 [NBD] (security/critical release)
620 OpenBSD 3.8 2005-11-01 [OBD]
621 FreeBSD 6.0 2005-11-01 [FBD]
622 NetBSD 2.1 2005-11-02 [NBD]
623 NetBSD 3.0 2005-12-23 [NBD]
624 DragonFly 1.4.0 2006-01-08 [DFB]
625 FreeBSD 2.2.9 2006-04-01 [FBD]
626 OpenBSD 3.9 2006-05-01 [OBD]
627 FreeBSD 6.1 2006-05-08 [FBD]
628 FreeBSD 5.5 2006-05-25 [FBD]
629 NetBSD 3.0.1 2006-07-24 [NBD] (security/critical release)
630 DragonFly 1.6.0 2006-07-24 [DFB]
631 OpenBSD 4.0 2006-11-01 [OBD]
632 NetBSD 3.0.2 2006-11-04 [NBD] (security/critical release)
633 NetBSD 3.1 2006-11-04 [NBD]
634 FreeBSD 6.2 2007-01-15 [FBD]
635 DragonFly 1.8.0 2007-01-30 [DFB]
636 OpenBSD 4.1 2007-05-01 [OBD]
637 DragonFly 1.10.0 2007-08-06 [DFB]
638 Mac OS X 10.5 2007-10-26 [APL]
639 OpenBSD 4.2 2007-11-01 [OBD]
640 NetBSD 4.0 2007-12-19 [NBD]
641 FreeBSD 6.3 2008-01-18 [FBD]
642 DragonFly 1.12.0 2008-02-26 [DFB]
643 FreeBSD 7.0 2008-02-27 [FBD]
644 OpenBSD 4.3 2008-05-01 [OBD]
645 DragonFly 2.0.0 2008-07-21 [DFB]
646 OpenBSD 4.4 2008-11-01 [OBD]
647 FreeBSD 6.4 2008-11-28 [FBD]
648 FreeBSD 7.1 2009-01-04 [FBD]
649 DragonFly 2.2.0 2009-02-17 [DFB]
650 NetBSD 5.0 2009-04-29 [NBD]
651 OpenBSD 4.5 2009-05-01 [OBD]
652 FreeBSD 7.2 2009-05-04 [FBD]
653 Mac OS X 10.6 2009-06-08 [APL]
654 NetBSD 5.0.1 2009-08-02 [NBD] (security/critical release)
655 DragonFly 2.4.0 2009-09-16 [DFB]
656 OpenBSD 4.6 2009-10-18 [OBD]
657 FreeBSD 8.0 2009-11-26 [FBD]
658 NetBSD 5.0.2 2010-02-12 [NBD] (security/critical release)
659 FreeBSD 7.3 2010-03-23 [FBD]
660 DragonFly 2.6.0 2010-03-28 [DFB]
661 OpenBSD 4.7 2010-05-19 [OBD]
662 FreeBSD 8.1 2010-07-24 [FBD]
663 DragonFly 2.8.2 2010-10-30 [DFB]
664 OpenBSD 4.8 2010-11-01 [OBD]
665 NetBSD 5.1 2010-11-19 [NBD]
666 FreeBSD 7.4 2011-02-24 [FBD]
667 FreeBSD 8.2 2011-02-24 [FBD]
668 DragonFly 2.10.1 2011-04-26 [DFB]
669 OpenBSD 4.9 2011-05-01 [OBD]
670 Mac OS X 10.7 2011-07-20 [APL]
671 OpenBSD 5.0 2011-11-01 [OBD]
672 FreeBSD 9.0 2012-01-12 [FBD]
673 NetBSD 5.1.2 2012-02-02 [NBD] (security/critical release)
674 DragonFly 3.0.1 2012-02-21 [DFB]
675 FreeBSD 8.3 2012-04-18 [FBD]
676 OpenBSD 5.1 2012-05-01 [OBD]
677 Mac OS X 10.8 2012-07-25 [APL]
678 NetBSD 6.0 2012-10-17 [NBD]
679 OpenBSD 5.2 2012-11-01 [OBD]
680 DragonFly 3.2.1 2012-11-02 [DFB]
681 NetBSD 5.2 2012-12-03 [NBD]
682 NetBSD 6.0.1 2012-12-26 [NBD] (security/critical release)
683 FreeBSD 9.1 2012-12-30 [FBD]
684 DragonFly 3.4.1 2013-04-29 [DFB]
685 OpenBSD 5.3 2013-05-01 [OBD]
686 NetBSD 6.0.2 2013-05-18 [NBD] (security/critical release)
687 NetBSD 6.1 2013-05-18 [NBD]
688 FreeBSD 8.4 2013-06-07 [FBD]
689 NetBSD 6.1.1 2013-08-22 [NBD]
690 NetBSD 5.1.3 2013-09-29 [NBD]
691 NetBSD 5.2.1 2013-09-29 [NBD]
692 FreeBSD 9.2 2013-09-30 [FBD]
693 NetBSD 6.0.3 2013-09-30 [NBD]
694 NetBSD 6.1.2 2013-09-30 [NBD]
695 Mac OS X 10.9 2013-10-22 [APL]
696 OpenBSD 5.4 2013-11-01 [OBD]
697 DragonFly 3.6.0 2013-11-25 [DFB]
698 FreeBSD 10.0 2014-01-20 [FBD]
699 NetBSD 5.1.4 2014-01-25 [NBD]
700 NetBSD 5.2.2 2014-01-25 [NBD]
701 NetBSD 6.0.4 2014-01-25 [NBD]
702 NetBSD 6.1.3 2014-01-25 [NBD]
703 DragonFly 3.6.1 2014-02-22 [DFB]
704 DragonFly 3.6.2 2014-04-10 [DFB]
705 NetBSD 6.0.5 2014-04-12 [NBD]
706 NetBSD 6.1.4 2014-04-12 [NBD]
707 OpenBSD 5.5 2014-05-01 [OBD]
708 DragonFly 3.8.0 2014-06-04 [DFB]
709 DragonFly 3.8.1 2014-06-16 [DFB]
710 DragonFly 3.6.3 2014-06-17 [DFB]
711 FreeBSD 9.3 2014-07-05 [FBD]
712 DragonFly 3.8.2 2014-08-08 [DFB]
713 NetBSD 6.0.6 2014-09-22 [NBD]
714 NetBSD 6.1.5 2014-09-22 [NBD]
715 Mac OS X 10.10 2014-10-16 [APL]
716 OpenBSD 5.6 2014-11-01 [OBD]
717 FreeBSD 10.1 2014-11-14 [FBD]
718 DragonFly 4.0.1 2014-11-25 [DFB]
719 DragonFly 4.0.2 2015-01-07 [DFB]
720 DragonFly 4.0.3 2015-01-21 [DFB]
721 DragonFly 4.0.4 2015-03-09 [DFB]
722 DragonFly 4.0.5 2015-03-23 [DFB]
723 OpenBSD 5.7 2015-05-01 [OBD]
724 DragonFly 4.2.0 2015-06-29 [DFB]
725 FreeBSD 10.2 2015-08-13 [FBD]
726 NetBSD 7.0 2015-09-25 [NBD]
727 OS X 10.11 2015-09-30 [APL]
728 OpenBSD 5.8 2015-10-18 [OBD]
729 DragonFly 4.4.1 2015-12-07 [DFB]
730 OpenBSD 5.9 2016-03-29 [OBD]
731 FreeBSD 10.3 2016-04-04 [FBD]
732 NetBSD 7.0.1 2016-05-22 [NBD]
733 DragonFly 4.6.0 2016-08-02 [DFB]
734 OpenBSD 6.0 2016-09-01 [OBD]
735 macOS 10.12 2016-09-20 [APL]
736 FreeBSD 11.0 2016-10-10 [FBD]
737 NetBSD 7.0.2 2016-10-21 [NBD]
738 NetBSD 7.1 2017-03-11 [NBD]
739 DragonFly 4.8.0 2017-03-27 [DFB]
740 OpenBSD 6.1 2017-04-11 [OBD]
741 FreeBSD 11.1 2017-07-26 [FBD]
742 macOS 10.13 2017-09-25 [APL]
743 FreeBSD 10.4 2017-10-03 [FBD]
744 OpenBSD 6.2 2017-10-09 [OBD]
745 DragonFly 5.0.0 2017-10-16 [DFB]
746 DragonFly 5.0.1 2017-11-06 [DFB]
747 DragonFly 5.0.2 2017-12-04 [DFB]
748 NetBSD 7.1.1 2017-12-22 [NBD]
749 NetBSD 7.1.2 2018-03-15 [NBD]
750 OpenBSD 6.3 2018-04-02 [OBD]
751 DragonFly 5.2.0 2018-04-10 [DFB]
752 DragonFly 5.2.1 2018-05-20 [DFB]
753 DragonFly 5.2.2 2018-06-18 [DFB]
754 FreeBSD 11.2 2018-06-27 [FBD]
755 NetBSD 8.0 2018-07-17 [NBD]
758 ------------------------
760 Leffler, Samuel J., Marshall Kirk McKusick, Michael J Karels and John
761 Quarterman. The Design and Implementation of the 4.3BSD UNIX Operating
762 System. Reading, Mass. Addison-Wesley, 1989. ISBN 0-201-06196-1
764 Salus, Peter H. A quarter century of UNIX. Addison-Wesley Publishing
765 Company, Inc., 1994. ISBN 0-201-54777-5
767 McKusick, Marshall Kirk, Keith Bostic, Michael J Karels, and John
768 Quarterman. The Design and Implementation of the 4.4BSD Operating
769 System. Reading, Mass. Addison-Wesley, 1996. ISBN 0-201-54979-4
771 McKusick, Marshall Kirk, George Neville-Neil. The Design and
772 Implementation of the FreeBSD Operating System.
773 Addison-Wesley Professional, Published: Aug 2, 2004. ISBN 0-201-70245-2
775 McKusick, Marshall Kirk, George Neville-Neil, Robert Watson. The
776 Design and Implementation of the FreeBSD Operating System, 2nd Edition.
777 Pearson Education, Inc., 2014. ISBN 0-321-96897-2
779 Doug McIlroy. Research Unix Reader.
781 Michael G. Brown. The Role of BSD in the Development of Unix.
782 Presented to the Tasmanian Unix Special Interest Group of the
783 Australian Computer Society, Hobart, August 1993.
785 Peter H. Salus. Unix at 25. Byte Magazine, October 1994.
786 URL: http://www.byte.com/art/9410/sec8/art3.htm
788 Andreas Klemm, Lars Köller. If you're going to San Francisco ...
789 Die freien BSD-Varianten von Unix. c't April 1997, page 368ff.
791 BSD Release Announcements collection.
792 URL: https://www.FreeBSD.org/releases/
794 BSD Hypertext Man Pages
795 URL: https://www.FreeBSD.org/cgi/man.cgi
797 UNIX history graphing project
798 URL: http://minnie.tuhs.org/Unix_History/index.html
801 URL: http://www.levenez.com/unix/
803 James Howard: The BSD Family Tree
804 URL: http://ezine.daemonnews.org/200104/bsd_family.html
805 ("what are the differences between FreeBSD, NetBSD, and OpenBSD?")
811 Josh Gilliam for suggestions, bug fixes, and finding very old
812 original BSD announcements from Usenet or tapes.
814 Steven M. Schultz for providing 2.8BSD, 2.10BSD, 2.11BSD manual pages.
817 Copyright (c) 1997-2012 Wolfram Schneider <wosch@FreeBSD.ORG>
818 URL: https://svnweb.freebsd.org/base/head/share/misc/bsd-family-tree