bsd-family-tree revision 1.63 1 The UNIX system family tree: Research and BSD
2 ---------------------------------------------
3
4 First Edition (V1)
5 |
6 Second Edition (V2)
7 |
8 Third Edition (V3)
9 |
10 Fourth Edition (V4)
11 |
12 Fifth Edition (V5)
13 |
14 Sixth Edition (V6) -----*
15 \ |
16 \ |
17 \ |
18 Seventh Edition (V7) |
19 \ |
20 \ 1BSD
21 32V |
22 \ 2BSD---------------*
23 \ / |
24 \ / |
25 \/ |
26 3BSD |
27 | |
28 4.0BSD 2.79BSD
29 | |
30 4.1BSD --------------> 2.8BSD
31 | |
32 4.1aBSD -----------\ |
33 | \ |
34 4.1bBSD \ |
35 | \ |
36 *------ 4.1cBSD --------------> 2.9BSD
37 / | |
38 Eighth Edition | 2.9BSD-Seismo
39 | | |
40 +----<--- 4.2BSD 2.9.1BSD
41 | | |
42 +----<--- 4.3BSD -------------> 2.10BSD
43 | | / |
44 Ninth Edition | / 2.10.1BSD
45 | 4.3BSD Tahoe-----+ |
46 | | \ |
47 | | \ |
48 v | 2.11BSD
49 Tenth Edition | |
50 | 2.11BSD rev #430
51 4.3BSD NET/1 |
52 | v
53 4.3BSD Reno
54 |
55 *---------- 4.3BSD NET/2 -------------------+-------------*
56 | | | |
57 386BSD 0.0 | | BSD/386 ALPHA
58 | | | |
59 386BSD 0.1 ------------>+ | BSD/386 0.3.[13]
60 | \ | 4.4BSD Alpha |
61 | 386BSD 1.0 | | BSD/386 0.9.[34]
62 | | 4.4BSD |
63 | | / | |
64 | | 4.4BSD-Encumbered | |
65 | -NetBSD 0.8 | BSD/386 1.0
66 | / | | |
67 FreeBSD 1.0 <-----' NetBSD 0.9 | BSD/386 1.1
68 | | .----- 4.4BSD Lite |
69 FreeBSD 1.1 | / / | \ |
70 | | / / | \ |
71 FreeBSD 1.1.5 .---|--------' / | \ |
72 | / | / | \ |
73 FreeBSD 1.1.5.1 / | / | \ |
74 | / NetBSD 1.0 <-' | \ |
75 | / | | \ |
76 FreeBSD 2.0 <--' | | BSD/OS 2.0
77 | \ | |
78 FreeBSD 2.0.5 \ | BSD/OS 2.0.1
79 | .-----\------------- 4.4BSD Lite2 |
80 | | \ | | | | |
81 | | .-----|------Rhapsody | | | |
82 | | | | NetBSD 1.3 | | |
83 | | | | OpenBSD 2.3 | |
84 | | | | BSD/OS 3.0 |
85 FreeBSD 2.1 | | | |
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 |
90 | | | | | \ | |
91 | FreeBSD 2.1.6.1 | | | \ | |
92 | | | | | \ | |
93 | FreeBSD 2.1.7 | | | | | |
94 | | | | | NetBSD 1.2.1 | |
95 | FreeBSD 2.1.7.1 | | | | |
96 | | | | | |
97 | | | | | |
98 *-FreeBSD 2.2 | | | | |
99 | \ | | | | |
100 | FreeBSD 2.2.1 | | | | |
101 | | | | | | |
102 | FreeBSD 2.2.2 | | | OpenBSD 2.1 |
103 | | | | | | |
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 | | | | | |
114 | | | | | | | |
115 | v | | | | OpenBSD 2.4 |
116 | FreeBSD 2.2.9 | | | | | |
117 | | | | | | |
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 |
123 | | | | | | | | |
124 | | | | | | | | |
125 | | | | | | | | |
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 | |
131 | | | | | | | | |
132 | | | | | | | | |
133 | FreeBSD 3.5 | | | | | OpenBSD 2.7 |
134 | | | | | | | | |
135 | FreeBSD 3.5.1 | | | | | | |
136 | | | | | | | |
137 *---FreeBSD 4.1 | | | | | | |
138 | | | | (?) | | | |
139 | FreeBSD 4.1.1 | | / | | | |
140 | | | | / | | | |
141 | FreeBSD 4.2 Darwin/ | NetBSD 1.4.3 | |
142 | | Mac OS X | OpenBSD 2.8 BSD/OS 4.2
143 | | | | | |
144 | | | | | |
145 | | 10.0 NetBSD 1.5 | |
146 | FreeBSD 4.3 | | | | |
147 | | | | | OpenBSD 2.9 |
148 | | | | NetBSD 1.5.1 | |
149 | | | | | | |
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 | | |
158 | | 10.2 | | |
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
164 | | \ | | | | |
165 | FreeBSD 4.9 | | | | OpenBSD 3.4 BSD/OS 5.1 ISE
166 | | | | | | |
167 | | | | | NetBSD 1.6.2 |
168 | | | | | | |
169 | | | | | | OpenBSD 3.5
170 | | | | | v |
171 | FreeBSD 4.10 | | | |
172 | | | | | |
173 | FreeBSD 4.11 | | | |
174 | | | | |
175 | `-|------|-----------------|---------------------.
176 | | | | \
177 FreeBSD 5.0 | | | |
178 | | | | |
179 FreeBSD 5.1 | | | DragonFly 1.0
180 | \ | | | |
181 | ----- Mac OS X | | |
182 | 10.3 | | |
183 FreeBSD 5.2 | | | |
184 | | | | | |
185 | FreeBSD 5.2.1 | | | |
186 | | | | |
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 | |
192 | | 10.4 | | | | |
193 | FreeBSD 5.4 | | | | | |
194 | | | | | | OpenBSD 3.7 |
195 | | | | | NetBSD 2.0.3 | |
196 | | | | | | | |
197 *--FreeBSD | | | | v OpenBSD 3.8 |
198 | 6.0 | | | | | |
199 | | | | | \ | |
200 | | | | | NetBSD 2.1 | |
201 | | | | | | |
202 | | | | NetBSD 3.0 | |
203 | | | | | | | | DragonFly 1.4.0
204 | | | | | | | OpenBSD 3.9 |
205 | FreeBSD | | | | | | |
206 | 6.1 | | | | | | |
207 | | FreeBSD 5.5 | | | | | |
208 | | | | | NetBSD 3.0.1 | DragonFly 1.6.0
209 | | | | | | | |
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
217 | | Mac OS X | | |
218 | | 10.5 | | |
219 | | | | OpenBSD 4.2 |
220 | | | NetBSD 4.0 | |
221 | FreeBSD 6.3 | | | | |
222 | \ | | | | |
223 *--FreeBSD | | | | | DragonFly 1.12.0
224 | 7.0 | | | | | |
225 | | | | | | OpenBSD 4.3 |
226 | | | | | NetBSD | DragonFly 2.0.0
227 | | FreeBSD | | 4.0.1 OpenBSD 4.4 |
228 | | 6.4 | | | |
229 | | | | | |
230 | FreeBSD 7.1 | | | |
231 | | | | | DragonFly 2.2.0
232 | FreeBSD 7.2 | NetBSD 5.0 OpenBSD 4.5 |
233 | \ | | | \ | |
234 | | Mac OS X | | \ | |
235 | | 10.6 | | \ | |
236 | | | | | NetBSD | DragonFly 2.4.0
237 | | | | | 5.0.1 OpenBSD 4.6 |
238 | | | | | | | |
239 *--FreeBSD | | | | | | |
240 | 8.0 | | | | | | |
241 | | FreeBSD | | | NetBSD | |
242 | | 7.3 | | | 5.0.2 | DragonFly 2.6.0
243 | | | | | | OpenBSD 4.7 |
244 | FreeBSD | | | | | |
245 | 8.1 | | | | | |
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 | | | | |
253 | \ 10.7 | | | | |
254 | | | | | | OpenBSD 5.0 |
255 *--FreeBSD | | | | | | |
256 | 9.0 | | | | NetBSD | DragonFly 3.0.1
257 | | FreeBSD | | | 5.1.2 | |
258 | | 8.3 | | | | | |
259 | | | | | | NetBSD | |
260 | | | | | | 5.1.3 | |
261 | | | | | | | | |
262 | | | | | | NetBSD | |
263 | | | | | | 5.1.4 | |
264 | | | | | | OpenBSD 5.1 |
265 | | | Mac OS X | `----. | |
266 | | | 10.8 | \ | |
267 | | | | NetBSD 6.0 | | |
268 | | | | | | | | OpenBSD 5.2 DragonFly 3.2.1
269 | FreeBSD | | | | | NetBSD | |
270 | 9.1 | | | | | 5.2 | |
271 | | | | | | | | | |
272 | | | | | | | NetBSD | |
273 | | | | | | | 5.2.1 | |
274 | | | | | | | | | |
275 | | | | | | | NetBSD | |
276 | | | | | | | 5.2.2 | |
277 | | | | | | | | |
278 | | | | | | \ | |
279 | | | | | | NetBSD | |
280 | | | | | | 6.0.1 | |
281 | | | | | | | OpenBSD 5.3 DragonFly 3.4.1
282 | | | | | | NetBSD | |
283 | | | | | | 6.0.2 | |
284 | | | | | | | | |
285 | | | | | | NetBSD | |
286 | | | | | | 6.0.3 | |
287 | | | | | | | | |
288 | | | | | | NetBSD | |
289 | | | | | | 6.0.4 | |
290 | | | | | | | | |
291 | | | | | | NetBSD | |
292 | | | | | | 6.0.5 | |
293 | | | | | | | |
294 | | | | | |`-NetBSD 6.1 | |
295 | | FreeBSD | | | | |
296 | | 8.4 | | NetBSD 6.1.1 | |
297 | | | | | | |
298 | FreeBSD | | NetBSD 6.1.2 | |
299 | 9.2 Mac OS X | | | |
300 | | 10.9 | | OpenBSD 5.4 |
301 | `-----. | | | | DragonFly 3.6.0
302 | \ | | | | |
303 *--FreeBSD | | | NetBSD 6.1.3 | |
304 | 10.0 | | | | | |
305 | | | | | | | DragonFly 3.6.1
306 | | | | | | | |
307 | | | | | | | |
308 | | | | | | | DragonFly 3.6.2
309 | | | | | NetBSD 6.1.4 | |
310 | | | | | | | |
311 | | | | | | OpenBSD 5.5 |
312 | | | | | | | |
313 | | | | | | | DragonFly 3.8.0
314 | | | | | | | |
315 | | | | | | | |
316 | | | | | | | DragonFly 3.8.1
317 | | | | | | | |
318 | | | | | | | |
319 | | | | | | | DragonFly 3.6.3
320 | | | | | | | |
321 | | FreeBSD | | | | |
322 | | 9.3 | | | | |
323 | | | | NetBSD 6.1.5 | DragonFly 3.8.2
324 | | Mac OS X | | |
325 | | 10.10 | | |
326 | | | | OpenBSD 5.6 |
327 | FreeBSD | | | |
328 | 10.1 | | | DragonFly 4.0.1
329 | | | | | |
330 | | | | | DragonFly 4.0.2
331 | | | | | |
332 | | | | | DragonFly 4.0.3
333 | | | | | |
334 | | | | | DragonFly 4.0.4
335 | | | | | |
336 | | | | | DragonFly 4.0.5
337 | | | | | |
338 | | | | OpenBSD 5.7 |
339 | | | | | DragonFly 4.2.0
340 | FreeBSD | | | |
341 | 10.2 | | | |
342 | | macOS NetBSD 7.0 | |
343 | | 10.11 | | | OpenBSD 5.8 |
344 | | | | | `--. | DragonFly 4.4.1
345 | FreeBSD | | | | OpenBSD 5.9 |
346 | 10.3 | | | | | |
347 | | | | | NetBSD 7.0.1 | |
348 | `------. | | | | | DragonFly 4.6.0
349 | | | | | | | |
350 | | | | | | | |
351 *--FreeBSD | macOS | | | OpenBSD 6.0 |
352 | 11.0 | 10.12 | | NetBSD 7.0.2 | |
353 | | | | | | | |
354 | | | | | *- NetBSD 7.1 | |
355 | | | macOS | | DragonFly 4.8.0
356 | | | 10.13 | OpenBSD 6.1 |
357 | FreeBSD | | | | |
358 | 11.1 FreeBSD | | | |
359 | | 10.4 | | OpenBSD 6.2 |
360 | | | | | |
361 | v | | | DragonFly 5.0.0
362 | | | | |
363 | | | | DragonFly 5.0.1
364 | | | | |
365 | | | | DragonFly 5.0.2
366 | | | | |
367 FreeBSD 12 -current | NetBSD -current OpenBSD -current DragonFly -current
368 | | | | |
369 v v v v v
370
371 Time
372 ----------------
373
374 Time tolerance +/- 6 months, depending on which book/article you read; if it
375 was the announcement in Usenet or if it was available as tape.
376
377 [44B] McKusick, Marshall Kirk, Keith Bostic, Michael J Karels,
378 and John Quarterman. The Design and Implementation of
379 the 4.4BSD Operating System.
380 [APL] Apple website [https://www.apple.com/macosx/]
381 [BSDI] Berkeley Software Design, Inc.
382 [DFB] DragonFlyBSD Project, The.
383 [DOC] README, COPYRIGHT on tape.
384 [FBD] FreeBSD Project, The.
385 [KB] Keith Bostic. BSD2.10 available from Usenix. comp.unix.sources,
386 Volume 11, Info 4, April, 1987.
387 [KKK] Mike Karels, Kirk McKusick, and Keith Bostic. tahoe announcement.
388 comp.bugs.4bsd.ucb-fixes, June 15, 1988.
389 [KSJ] Michael J. Karels, Carl F. Smith, and William F. Jolitz.
390 Changes in the Kernel in 2.9BSD. Second Berkeley Software
391 Distribution UNIX Version 2.9, July, 1983.
392 [NBD] NetBSD Project, The.
393 [OBD] OpenBSD Project, The.
394 [QCU] Salus, Peter H. A quarter century of UNIX.
395 [SMS] Steven M. Schultz. 2.11BSD, UNIX for the PDP-11.
396 [TUHS] The Unix Historical Society. http://minnie.tuhs.org/Unix_History/.
397 [USE] Usenet announcement.
398 [WRS] Wind River Systems, Inc.
399 [dmr] Dennis Ritchie, via E-Mail
400
401 Multics 1965
402 UNIX Summer 1969
403 DEC PDP-7
404 First Edition 1971-11-03 [QCU]
405 DEC PDP-11/20, Assembler
406 Second Edition 1972-06-12 [QCU]
407 10 UNIX installations
408 Third Edition 1973-02-xx [QCU]
409 Pipes, 16 installations
410 Fourth Edition 1973-11-xx [QCU]
411 rewriting in C effected,
412 above 30 installations
413 Fifth Edition 1974-06-xx [QCU]
414 above 50 installations
415 Sixth Edition 1975-05-xx [QCU]
416 port to DEC Vax
417 Seventh Edition 1979-01-xx [QCU] 1979-01-10 [TUHS]
418 first portable UNIX
419 Eighth Edition 1985-02-xx [QCU]
420 VAX 11/750, VAX 11/780 [dmr]
421 descended from 4.1c BSD [dmr]
422 descended from 4.1 BSD [44B]
423 scooping-out and replacement of the character-device
424 and networking part by the streams mechanism
425
426 Ninth Edition 1986-09-xx [QCU]
427 Tenth Edition 1989-10-xx [QCU]
428
429 1BSD late 1977
430 1978-03-09 [QCU]
431 PDP-11, Pascal, ex(1)
432 30 free copies of 1BSD sent out
433 35 tapes sold for 50 USD [QCU]
434 2BSD mid 1978 [QCU] 1979-05-10 [TUHS]
435 75 2BSD tapes shipped
436 2.79BSD 1980-04-xx [TUHS]
437 2.8BSD 1981-07-xx [KSJ]
438
439 2.8.1BSD 1982-01-xx [QCU]
440 set of performance improvements
441 2.9BSD 1983-07-xx [KSJ]
442 2.9.1BSD 1983-11-xx [TUHS]
443 2.9BSD-Seismo 1985-08-xx [SMS]
444 2.10BSD 1987-04-xx [KKK]
445 2.10.1BSD 1989-01-xx [SMS]
446 2.11BSD 1992-02-xx [SMS]
447 2.11BSD rev #430 1999-12-13 [SMS]
448
449 32V 1978-1[01]-xx [QCU] 1979-03-26 [TUHS]
450 3BSD late 1979 [QCU] March 1980 [TUHS]
451 virtual memory, page replacement,
452 demand paging
453 4.0BSD 1980-10-xx
454 4.1BSD 1981-07-08 [DOC]
455 4.1aBSD 1982-04-xx
456 alpha release, 100 sites, networking [44B]
457 4.1bBSD internal release, fast filesystem [44B]
458 4.1cBSD late 1982
459 beta release, IPC [44B]
460 4.2BSD 1983-09-xx [QCU]
461 1983-08-03 [DOC]
462 4.3BSD 1986-06-xx [QCU]
463 1986-04-05 [KB], [DOC]
464 4.3BSD Tahoe 1988-06-15 [QCU], [DOC]
465 4.3BSD NET/1 1988-11-xx [QCU]
466 1989-01-01 [DOC]
467 4.3BSD Reno 1990-06-29 [QCU], [DOC]
468 4.3BSD NET/2 1991-06-28 [QCU], [DOC]
469
470 BSD/386 ALPHA 1991-12-xx [BSDI]
471 first code released to people outside BSDI
472 386BSD 0.0 1992-02-xx [DOC]
473 BSD/386 0.3.1 1992-04-xx [BSDI] first ext. beta; B customers
474 BSD/386 0.3.3 1992-06-xx [BSDI] first CDROM version
475 386BSD 0.1 1992-07-28 [DOC]
476 4.4BSD Alpha 1992-07-07
477 BSD/386 0.9.3 1992-10-xx [BSDI]
478 first external gamma; G customers
479 BSD/386 0.9.4 1992-12-xx [BSDI]
480 would have been 1.0 except for request
481 for preliminary injunction
482 BSD/386 1.0 1993-03-xx [BSDI]
483 injunction denied; first official release
484 NetBSD 0.8 1993-04-20 [NBD]
485 4.4BSD 1993-06-01 [USE]
486 NetBSD 0.9 1993-08-23 [NBD]
487 FreeBSD 1.0 1993-11-01 [FBD]
488 FreeBSD 1.0.2 1993-11-14 [FBD]
489 supersedes 1.0 13 days after release.
490 BSD/386 1.1 1994-02-xx [BSDI]
491 4.4BSD Lite 1994-03-01 [USE]
492 FreeBSD 1.1 1994-05-07 [FBD]
493 FreeBSD 1.1.5 1994-06-30 [FBD]
494 FreeBSD 1.1.5.1 1994-07-05 [FBD]
495 supersedes 1.1.5 5 days after release.
496 NetBSD 1.0 1994-10-26 [NBD]
497 386BSD 1.0 1994-11-12 [USE]
498 FreeBSD 2.0 1994-11-23 [FBD]
499 BSD/OS 2.0 1995-01-xx [BSDI] 4.4 lite based
500 FreeBSD 2.0.5 1995-06-10 [FBD]
501 BSD/OS 2.0.1 1995-06-xx [BSDI]
502 4.4BSD Lite Release 2 1995-06-xx [44B]
503 the true final distribution from the CSRG
504 FreeBSD 2.1.0 1995-11-19 [FBD]
505 NetBSD 1.1 1995-11-26 [NBD]
506 BSD/OS 2.1 1996-01-xx [BSDI]
507 FreeBSD 2.1.5 1996-07-14 [FBD]
508 NetBSD 1.2 1996-10-04 [NBD]
509 OpenBSD 2.0 1996-10-18 [OBD]
510 FreeBSD 2.1.6 1996-11-16 [FBD]
511 FreeBSD 2.1.6.1 1996-11-25 [FBD] (sendmail security release)
512 Rhapsody 1997-xx-xx
513 FreeBSD 2.1.7 1997-02-20 [FBD]
514 BSD/OS 3.0 1997-02-xx [BSDI] 4.4 lite2 based
515 FreeBSD 2.2.0 1997-03-16 [FBD]
516 FreeBSD 2.2.1 1997-03-25 [FBD]
517 FreeBSD 2.2.2 1997-05-16 [FBD]
518 NetBSD 1.2.1 1997-05-20 [NBD] (patch release)
519 OpenBSD 2.1 1997-06-01 [OBD]
520 FreeBSD 2.2.5 1997-10-22 [FBD]
521 OpenBSD 2.2 1997-12-01 [OBD]
522 NetBSD 1.3 1998-01-04 [NBD]
523 FreeBSD 2.2.6 1998-03-25 [FBD]
524 NetBSD 1.3.1 1998-03-09 [NBD] (patch release)
525 BSD/OS 3.1 1998-03-xx [BSDI]
526 OpenBSD 2.3 1998-05-19 [OBD]
527 NetBSD 1.3.2 1998-05-29 [NBD] (patch release)
528 FreeBSD 2.2.7 1998-07-22 [FBD]
529 BSD/OS 4.0 1998-08-xx [BSDI]
530 2-lock MP support, ELF executables
531 FreeBSD 3.0 1998-10-16 [FBD]
532 FreeBSD-3.0 is a snapshot from -current,
533 while 3.1 and 3.2 are from 3.x-stable which
534 was branched quite some time after 3.0-release
535 FreeBSD 2.2.8 1998-11-29 [FBD]
536 OpenBSD 2.4 1998-12-01 [OBD]
537 NetBSD 1.3.3 1998-12-23 [NBD] (patch release)
538 FreeBSD 3.1 1999-02-15 [FBD]
539 BSD/OS 4.0.1 1999-03-xx [BSDI]
540 NetBSD 1.4 1999-05-12 [NBD]
541 FreeBSD 3.2 1999-05-17 [FBD]
542 OpenBSD 2.5 1999-05-19 [OBD]
543 NetBSD 1.4.1 1999-08-26 [NBD] (patch release)
544 FreeBSD 3.3 1999-09-17 [FBD]
545 OpenBSD 2.6 1999-12-01 [OBD]
546 FreeBSD 3.4 1999-12-20 [FBD]
547 BSD/OS 4.1 1999-12-xx [BSDI]
548 FreeBSD 4.0 2000-03-13 [FBD]
549 NetBSD 1.4.2 2000-03-19 [NBD] (patch release)
550 OpenBSD 2.7 2000-06-15 [OBD]
551 FreeBSD 3.5 2000-06-24 [FBD]
552 FreeBSD 4.1 2000-07-27 [FBD]
553 FreeBSD 3.5.1 2000-07-28 [FBD]
554 FreeBSD 4.1.1 2000-09-25 [FBD] (a network-only patch release)
555 FreeBSD 4.2 2000-11-21 [FBD]
556 NetBSD 1.4.3 2000-11-25 [NBD] (patch release)
557 BSD/OS 4.2 2000-11-29 [BSDI]
558 OpenBSD 2.8 2000-12-01 [OBD]
559 NetBSD 1.5 2000-12-06 [NBD]
560 Mac OS X 10.0 2001-03-24 [APL]
561 FreeBSD 4.3 2001-04-20 [FBD]
562 OpenBSD 2.9 2001-06-01 [OBD]
563 NetBSD 1.5.1 2001-07-11 [NBD] (patch release)
564 NetBSD 1.5.2 2001-09-13 [NBD] (patch release)
565 FreeBSD 4.4 2001-09-18 [FBD]
566 Mac OS X 10.1 2001-09-29 [APL]
567 OpenBSD 3.0 2001-12-01 [OBD]
568 FreeBSD 4.5 2002-01-29 [FBD]
569 BSD/OS 4.3 2002-03-14 [WRS]
570 OpenBSD 3.1 2002-05-19 [OBD]
571 FreeBSD 4.6 2002-06-15 [FBD]
572 NetBSD 1.5.3 2002-07-22 [NBD] (patch release)
573 FreeBSD 4.6.2 2002-08-15 [FBD] (patch release)
574 Mac OS X 10.2 2002-08-23 [APL]
575 NetBSD 1.6 2002-09-14 [NBD]
576 FreeBSD 4.7 2002-10-08 [FBD]
577 OpenBSD 3.2 2002-11-01 [OBD]
578 FreeBSD 5.0 2003-01-17 [FBD]
579 FreeBSD 5.0 is a separate branch off of
580 -current, similar to 3.0.
581 FreeBSD 4.8 2003-04-03 [FBD]
582 NetBSD 1.6.1 2003-04-21 [NBD] (patch release)
583 OpenBSD 3.3 2003-05-01 [OBD]
584 BSD/OS 5.0 2003-05-?? [WRS]
585 FreeBSD 5.1 2003-06-09 [FBD]
586 Mac OS X 10.3 2003-10-24 [APL]
587 FreeBSD 4.9 2003-10-28 [FBD]
588 BSD/OS 5.1 ISE 2003-10-?? [WRS] (final version)
589 OpenBSD 3.4 2003-11-01 [OBD]
590 FreeBSD 5.2 2004-01-12 [FBD]
591 FreeBSD 5.2.1 2004-02-22 [FBD] (patch release)
592 NetBSD 1.6.2 2004-03-01 [NBD] (patch release)
593 OpenBSD 3.5 2004-04-01 [OBD]
594 FreeBSD 4.10 2004-05-27 [FBD]
595 DragonFly 1.0 2004-07-12 [DFB]
596 OpenBSD 3.6 2004-10-29 [OBD]
597 FreeBSD 5.3 2004-11-06 [FBD]
598 NetBSD 2.0 2004-12-09 [NBD]
599 FreeBSD 4.11 2005-01-25 [FBD]
600 DragonFly 1.2.0 2005-04-08 [DFB]
601 NetBSD 2.0.2 2005-04-14 [NBD] (security/critical release)
602 Mac OS X 10.4 2005-04-29 [APL]
603 FreeBSD 5.4 2005-05-09 [FBD]
604 OpenBSD 3.7 2005-05-19 [OBD]
605 NetBSD 2.0.3 2005-10-31 [NBD] (security/critical release)
606 OpenBSD 3.8 2005-11-01 [OBD]
607 FreeBSD 6.0 2005-11-01 [FBD]
608 NetBSD 2.1 2005-11-02 [NBD]
609 NetBSD 3.0 2005-12-23 [NBD]
610 DragonFly 1.4.0 2006-01-08 [DFB]
611 FreeBSD 2.2.9 2006-04-01 [FBD]
612 OpenBSD 3.9 2006-05-01 [OBD]
613 FreeBSD 6.1 2006-05-08 [FBD]
614 FreeBSD 5.5 2006-05-25 [FBD]
615 NetBSD 3.0.1 2006-07-24 [NBD] (security/critical release)
616 DragonFly 1.6.0 2006-07-24 [DFB]
617 OpenBSD 4.0 2006-11-01 [OBD]
618 NetBSD 3.0.2 2006-11-04 [NBD] (security/critical release)
619 NetBSD 3.1 2006-11-04 [NBD]
620 FreeBSD 6.2 2007-01-15 [FBD]
621 DragonFly 1.8.0 2007-01-30 [DFB]
622 OpenBSD 4.1 2007-05-01 [OBD]
623 DragonFly 1.10.0 2007-08-06 [DFB]
624 Mac OS X 10.5 2007-10-26 [APL]
625 OpenBSD 4.2 2007-11-01 [OBD]
626 NetBSD 4.0 2007-12-19 [NBD]
627 FreeBSD 6.3 2008-01-18 [FBD]
628 DragonFly 1.12.0 2008-02-26 [DFB]
629 FreeBSD 7.0 2008-02-27 [FBD]
630 OpenBSD 4.3 2008-05-01 [OBD]
631 DragonFly 2.0.0 2008-07-21 [DFB]
632 OpenBSD 4.4 2008-11-01 [OBD]
633 FreeBSD 6.4 2008-11-28 [FBD]
634 FreeBSD 7.1 2009-01-04 [FBD]
635 DragonFly 2.2.0 2009-02-17 [DFB]
636 NetBSD 5.0 2009-04-29 [NBD]
637 OpenBSD 4.5 2009-05-01 [OBD]
638 FreeBSD 7.2 2009-05-04 [FBD]
639 Mac OS X 10.6 2009-06-08 [APL]
640 NetBSD 5.0.1 2009-08-02 [NBD] (security/critical release)
641 DragonFly 2.4.0 2009-09-16 [DFB]
642 OpenBSD 4.6 2009-10-18 [OBD]
643 FreeBSD 8.0 2009-11-26 [FBD]
644 NetBSD 5.0.2 2010-02-12 [NBD] (security/critical release)
645 FreeBSD 7.3 2010-03-23 [FBD]
646 DragonFly 2.6.0 2010-03-28 [DFB]
647 OpenBSD 4.7 2010-05-19 [OBD]
648 FreeBSD 8.1 2010-07-24 [FBD]
649 DragonFly 2.8.2 2010-10-30 [DFB]
650 OpenBSD 4.8 2010-11-01 [OBD]
651 NetBSD 5.1 2010-11-19 [NBD]
652 FreeBSD 7.4 2011-02-24 [FBD]
653 FreeBSD 8.2 2011-02-24 [FBD]
654 DragonFly 2.10.1 2011-04-26 [DFB]
655 OpenBSD 4.9 2011-05-01 [OBD]
656 Mac OS X 10.7 2011-07-20 [APL]
657 OpenBSD 5.0 2011-11-01 [OBD]
658 FreeBSD 9.0 2012-01-12 [FBD]
659 NetBSD 5.1.2 2012-02-02 [NBD] (security/critical release)
660 DragonFly 3.0.1 2012-02-21 [DFB]
661 FreeBSD 8.3 2012-04-18 [FBD]
662 OpenBSD 5.1 2012-05-01 [OBD]
663 Mac OS X 10.8 2012-07-25 [APL]
664 NetBSD 6.0 2012-10-17 [NBD]
665 OpenBSD 5.2 2012-11-01 [OBD]
666 DragonFly 3.2.1 2012-11-02 [DFB]
667 NetBSD 5.2 2012-12-03 [NBD]
668 NetBSD 6.0.1 2012-12-26 [NBD] (security/critical release)
669 FreeBSD 9.1 2012-12-30 [FBD]
670 DragonFly 3.4.1 2013-04-29 [DFB]
671 OpenBSD 5.3 2013-05-01 [OBD]
672 NetBSD 6.0.2 2013-05-18 [NBD] (security/critical release)
673 NetBSD 6.1 2013-05-18 [NBD]
674 FreeBSD 8.4 2013-06-07 [FBD]
675 NetBSD 6.1.1 2013-08-22 [NBD]
676 NetBSD 5.1.3 2013-09-29 [NBD]
677 NetBSD 5.2.1 2013-09-29 [NBD]
678 FreeBSD 9.2 2013-09-30 [FBD]
679 NetBSD 6.0.3 2013-09-30 [NBD]
680 NetBSD 6.1.2 2013-09-30 [NBD]
681 Mac OS X 10.9 2013-10-22 [APL]
682 OpenBSD 5.4 2013-11-01 [OBD]
683 DragonFly 3.6.0 2013-11-25 [DFB]
684 FreeBSD 10.0 2014-01-20 [FBD]
685 NetBSD 5.1.4 2014-01-25 [NBD]
686 NetBSD 5.2.2 2014-01-25 [NBD]
687 NetBSD 6.0.4 2014-01-25 [NBD]
688 NetBSD 6.1.3 2014-01-25 [NBD]
689 DragonFly 3.6.1 2014-02-22 [DFB]
690 DragonFly 3.6.2 2014-04-10 [DFB]
691 NetBSD 6.0.5 2014-04-12 [NDB]
692 NetBSD 6.1.4 2014-04-12 [NDB]
693 OpenBSD 5.5 2014-05-01 [OBD]
694 DragonFly 3.8.0 2014-06-04 [DFB]
695 DragonFly 3.8.1 2014-06-16 [DFB]
696 DragonFly 3.6.3 2014-06-17 [DFB]
697 FreeBSD 9.3 2014-07-05 [FBD]
698 DragonFly 3.8.2 2014-08-08 [DFB]
699 NetBSD 6.1.5 2014-09-22 [NBD]
700 Mac OS X 10.10 2014-10-16 [APL]
701 OpenBSD 5.6 2014-11-01 [OBD]
702 FreeBSD 10.1 2014-11-14 [FBD]
703 DragonFly 4.0.1 2014-11-25 [DFB]
704 DragonFly 4.0.2 2015-01-07 [DFB]
705 DragonFly 4.0.3 2015-01-21 [DFB]
706 DragonFly 4.0.4 2015-03-09 [DFB]
707 DragonFly 4.0.5 2015-03-23 [DFB]
708 OpenBSD 5.7 2015-05-01 [OBD]
709 DragonFly 4.2.0 2015-06-29 [DFB]
710 FreeBSD 10.2 2015-08-13 [FBD]
711 NetBSD 7.0 2015-09-25 [NBD]
712 OS X 10.11 2015-09-30 [APL]
713 OpenBSD 5.8 2015-10-18 [OBD]
714 DragonFly 4.4.1 2015-12-07 [DFB]
715 OpenBSD 5.9 2016-03-29 [OBD]
716 FreeBSD 10.3 2016-04-04 [FBD]
717 NetBSD 7.0.1 2016-05-22 [NBD]
718 DragonFly 4.6.0 2016-08-02 [DFB]
719 OpenBSD 6.0 2016-09-01 [OBD]
720 macOS 10.12 2016-09-20 [APL]
721 NetBSD 7.0.2 2016-10-21 [NBD]
722 FreeBSD 11.0 2016-10-10 [FBD]
723 NetBSD 7.1 2017-03-11 [NBD]
724 DragonFly 4.8.0 2017-03-27 [DFB]
725 OpenBSD 6.1 2017-04-11 [OBD]
726 FreeBSD 11.1 2017-07-26 [FBD]
727 macOS 10.13 2017-09-25 [APL]
728 FreeBSD 10.4 2017-10-03 [FBD]
729 OpenBSD 6.2 2017-10-09 [OBD]
730 DragonFly 5.0.0 2017-10-16 [DFB]
731 DragonFly 5.0.1 2017-11-06 [DFB]
732 DragonFly 5.0.2 2017-12-04 [DFB]
733
734 Bibliography
735 ------------------------
736
737 Leffler, Samuel J., Marshall Kirk McKusick, Michael J Karels and John
738 Quarterman. The Design and Implementation of the 4.3BSD UNIX Operating
739 System. Reading, Mass. Addison-Wesley, 1989. ISBN 0-201-06196-1
740
741 Salus, Peter H. A quarter century of UNIX. Addison-Wesley Publishing
742 Company, Inc., 1994. ISBN 0-201-54777-5
743
744 McKusick, Marshall Kirk, Keith Bostic, Michael J Karels, and John
745 Quarterman. The Design and Implementation of the 4.4BSD Operating
746 System. Reading, Mass. Addison-Wesley, 1996. ISBN 0-201-54979-4
747
748 McKusick, Marshall Kirk, George Neville-Neil. The Design and
749 Implementation of the FreeBSD Operating System.
750 Addison-Wesley Professional, Published: Aug 2, 2004. ISBN 0-201-70245-2
751
752 McKusick, Marshall Kirk, George Neville-Neil, Robert Watson. The
753 Design and Implementation of the FreeBSD Operating System, 2nd Edition.
754 Pearson Education, Inc., 2014. ISBN 0-321-96897-2
755
756 Doug McIlroy. Research Unix Reader.
757
758 Michael G. Brown. The Role of BSD in the Development of Unix.
759 Presented to the Tasmanian Unix Special Interest Group of the
760 Australian Computer Society, Hobart, August 1993.
761
762 Peter H. Salus. Unix at 25. Byte Magazine, October 1994.
763 URL: http://www.byte.com/art/9410/sec8/art3.htm
764
765 Andreas Klemm, Lars Kller. If you're going to San Francisco ...
766 Die freien BSD-Varianten von Unix. c't April 1997, page 368ff.
767
768 BSD Release Announcements collection.
769 URL: https://www.FreeBSD.org/releases/
770
771 BSD Hypertext Man Pages
772 URL: https://www.FreeBSD.org/cgi/man.cgi
773
774 UNIX history graphing project
775 URL: http://minnie.tuhs.org/Unix_History/index.html
776
777 UNIX history
778 URL: http://www.levenez.com/unix/
779
780 James Howard: The BSD Family Tree
781 URL: http://ezine.daemonnews.org/200104/bsd_family.html
782 ("what are the differences between FreeBSD, NetBSD, and OpenBSD?")
783
784
785 Acknowledgments
786 ---------------
787
788 Josh Gilliam for suggestions, bug fixes, and finding very old
789 original BSD announcements from Usenet or tapes.
790
791 Steven M. Schultz for providing 2.8BSD, 2.10BSD, 2.11BSD manual pages.
792
793 --
794 Copyright (c) 1997-2012 Wolfram Schneider <wosch (a] FreeBSD.ORG>
795 URL: http://svnweb.freebsd.org/base/head/share/misc/bsd-family-tree
796
797 $FreeBSD: head/share/misc/bsd-family-tree 326724 2017-12-09 05:05:25Z imp $
798 $NetBSD: bsd-family-tree,v 1.63 2017/12/15 04:10:49 riastradh Exp $
799