1The UNIX system family tree: Research and BSD 2--------------------------------------------- 3 4First Edition (V1) 5 | 6Second Edition (V2) 7 | 8Third Edition (V3) 9 | 10Fourth Edition (V4) 11 | 12Fifth Edition (V5) 13 | 14Sixth Edition (V6) -----* 15 \ | 16 \ | 17 \ | 18Seventh 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 / | | 38Eighth Edition | 2.9BSD-Seismo 39 | | | 40 +----<--- 4.2BSD 2.9.1BSD 41 | | | 42 +----<--- 4.3BSD -------------> 2.10BSD 43 | | / | 44Ninth Edition | / 2.10.1BSD 45 | 4.3BSD Tahoe-----+ | 46 | | \ | 47 | | \ | 48 v | 2.11BSD 49Tenth Edition | | 50 | 2.11BSD rev #430 51 4.3BSD NET/1 | 52 | v 53 4.3BSD Reno 54 | 55 *---------- 4.3BSD NET/2 -------------------+-------------* 56 | | | | 57386BSD 0.0 | | BSD/386 ALPHA 58 | | | | 59386BSD 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 | / | | | 67FreeBSD 1.0 <-----' NetBSD 0.9 | BSD/386 1.1 68 | | .----- 4.4BSD Lite | 69FreeBSD 1.1 | / / | \ | 70 | | / / | \ | 71FreeBSD 1.1.5 .---|--------' / | \ | 72 | / | / | \ | 73FreeBSD 1.1.5.1 / | / | \ | 74 | / NetBSD 1.0 <-' | \ | 75 | / | | \ | 76FreeBSD 2.0 <--' | | BSD/OS 2.0 77 | \ | | 78FreeBSD 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 | 85FreeBSD 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 | | | | | | | 118FreeBSD 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 130FreeBSD 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 | | | | \ 177FreeBSD 5.0 | | | | 178 | | | | | 179FreeBSD 5.1 | | | DragonFly 1.0 180 | \ | | | | 181 | ----- Mac OS X | | | 182 | 10.3 | | | 183FreeBSD 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 | | 295 | | | | | | 6.0.6 | | 296 | | | | | | | | 297 | | | | | |`-NetBSD 6.1 | | 298 | | FreeBSD | | | | | 299 | | 8.4 | | NetBSD 6.1.1 | | 300 | | | | | | | 301 | FreeBSD | | NetBSD 6.1.2 | | 302 | 9.2 Mac OS X | | | | 303 | | 10.9 | | OpenBSD 5.4 | 304 | `-----. | | | | DragonFly 3.6.0 305 | \ | | | | | 306 *--FreeBSD | | | NetBSD 6.1.3 | | 307 | 10.0 | | | | | | 308 | | | | | | | DragonFly 3.6.1 309 | | | | | | | | 310 | | | | | | | | 311 | | | | | | | DragonFly 3.6.2 312 | | | | | NetBSD 6.1.4 | | 313 | | | | | | | | 314 | | | | | | OpenBSD 5.5 | 315 | | | | | | | | 316 | | | | | | | DragonFly 3.8.0 317 | | | | | | | | 318 | | | | | | | | 319 | | | | | | | DragonFly 3.8.1 320 | | | | | | | | 321 | | | | | | | | 322 | | | | | | | DragonFly 3.6.3 323 | | | | | | | | 324 | | FreeBSD | | | | | 325 | | 9.3 | | | | | 326 | | | | NetBSD 6.1.5 | DragonFly 3.8.2 327 | | Mac OS X | | | 328 | | 10.10 | | | 329 | | | | OpenBSD 5.6 | 330 | FreeBSD | | | | 331 | 10.1 | | | DragonFly 4.0.1 332 | | | | | | 333 | | | | | DragonFly 4.0.2 334 | | | | | | 335 | | | | | DragonFly 4.0.3 336 | | | | | | 337 | | | | | DragonFly 4.0.4 338 | | | | | | 339 | | | | | DragonFly 4.0.5 340 | | | | | | 341 | | | | OpenBSD 5.7 | 342 | | | | | DragonFly 4.2.0 343 | FreeBSD | | | | 344 | 10.2 | | | | 345 | | macOS NetBSD 7.0 | | 346 | | 10.11 | | | OpenBSD 5.8 | 347 | | | | | `--. | DragonFly 4.4.1 348 | FreeBSD | | | | OpenBSD 5.9 | 349 | 10.3 | | | | | | 350 | | | | | NetBSD 7.0.1 | | 351 | `------. | | | | | DragonFly 4.6.0 352 | | | | | | | | 353 | | | | | | | | 354 *--FreeBSD | macOS | | | OpenBSD 6.0 | 355 | 11.0 | 10.12 | | NetBSD 7.0.2 | | 356 | | | | | | | | 357 | | | | | *- NetBSD 7.1 | | 358 | | | macOS | | | DragonFly 4.8.0 359 | | | 10.13 | | OpenBSD 6.1 | 360 | FreeBSD | | | | | DragonFly 5.0.0 361 | 11.1 FreeBSD | | | | | 362 | | 10.4 | | | OpenBSD 6.2 DragonFly 5.0.1 363 | | | v | | | | 364 | | | | | | DragonFly 5.0.2 365 | | | | | | | 366 | | FreeBSD | NetBSD 7.1.1 | | 367 | | 10-stable | | | 368 | FreeBSD \ | | | 369 | 11-stable \ | | | 370 | / `| | | | 371 | HardenedBSD | | | | 372 | 11-stable HardenedBSD | | | 373 | 10-stable | | | 374 | | | | 375 | | | | 376 | | | | 377FreeBSD 12 -current NetBSD -current OpenBSD -current DragonFly -current 378 | | | | 379 v v v v 380 381Time 382---------------- 383 384Time tolerance +/- 6 months, depending on which book/article you read; if it 385was the announcement in Usenet or if it was available as tape. 386 387[44B] McKusick, Marshall Kirk, Keith Bostic, Michael J Karels, 388 and John Quarterman. The Design and Implementation of 389 the 4.4BSD Operating System. 390[APL] Apple website [https://www.apple.com/macosx/] 391[BSDI] Berkeley Software Design, Inc. 392[DFB] DragonFlyBSD Project, The. 393[DOC] README, COPYRIGHT on tape. 394[FBD] FreeBSD Project, The. 395[KB] Keith Bostic. BSD2.10 available from Usenix. comp.unix.sources, 396 Volume 11, Info 4, April, 1987. 397[KKK] Mike Karels, Kirk McKusick, and Keith Bostic. tahoe announcement. 398 comp.bugs.4bsd.ucb-fixes, June 15, 1988. 399[KSJ] Michael J. Karels, Carl F. Smith, and William F. Jolitz. 400 Changes in the Kernel in 2.9BSD. Second Berkeley Software 401 Distribution UNIX Version 2.9, July, 1983. 402[NBD] NetBSD Project, The. 403[OBD] OpenBSD Project, The. 404[QCU] Salus, Peter H. A quarter century of UNIX. 405[SMS] Steven M. Schultz. 2.11BSD, UNIX for the PDP-11. 406[TUHS] The Unix Historical Society. http://minnie.tuhs.org/Unix_History/. 407[USE] Usenet announcement. 408[WRS] Wind River Systems, Inc. 409[dmr] Dennis Ritchie, via E-Mail 410 411Multics 1965 412UNIX Summer 1969 413 DEC PDP-7 414First Edition 1971-11-03 [QCU] 415 DEC PDP-11/20, Assembler 416Second Edition 1972-06-12 [QCU] 417 10 UNIX installations 418Third Edition 1973-02-xx [QCU] 419 Pipes, 16 installations 420Fourth Edition 1973-11-xx [QCU] 421 rewriting in C effected, 422 above 30 installations 423Fifth Edition 1974-06-xx [QCU] 424 above 50 installations 425Sixth Edition 1975-05-xx [QCU] 426 port to DEC Vax 427Seventh Edition 1979-01-xx [QCU] 1979-01-10 [TUHS] 428 first portable UNIX 429Eighth Edition 1985-02-xx [QCU] 430 VAX 11/750, VAX 11/780 [dmr] 431 descended from 4.1c BSD [dmr] 432 descended from 4.1 BSD [44B] 433 scooping-out and replacement of the character-device 434 and networking part by the streams mechanism 435 436Ninth Edition 1986-09-xx [QCU] 437Tenth Edition 1989-10-xx [QCU] 438 4391BSD late 1977 440 1978-03-09 [QCU] 441 PDP-11, Pascal, ex(1) 442 30 free copies of 1BSD sent out 443 35 tapes sold for 50 USD [QCU] 4442BSD mid 1978 [QCU] 1979-05-10 [TUHS] 445 75 2BSD tapes shipped 4462.79BSD 1980-04-xx [TUHS] 4472.8BSD 1981-07-xx [KSJ] 448 4492.8.1BSD 1982-01-xx [QCU] 450 set of performance improvements 4512.9BSD 1983-07-xx [KSJ] 4522.9.1BSD 1983-11-xx [TUHS] 4532.9BSD-Seismo 1985-08-xx [SMS] 4542.10BSD 1987-04-xx [KKK] 4552.10.1BSD 1989-01-xx [SMS] 4562.11BSD 1992-02-xx [SMS] 4572.11BSD rev #430 1999-12-13 [SMS] 458 45932V 1978-1[01]-xx [QCU] 1979-03-26 [TUHS] 4603BSD late 1979 [QCU] March 1980 [TUHS] 461 virtual memory, page replacement, 462 demand paging 4634.0BSD 1980-10-xx 4644.1BSD 1981-07-08 [DOC] 4654.1aBSD 1982-04-xx 466 alpha release, 100 sites, networking [44B] 4674.1bBSD internal release, fast filesystem [44B] 4684.1cBSD late 1982 469 beta release, IPC [44B] 4704.2BSD 1983-09-xx [QCU] 471 1983-08-03 [DOC] 4724.3BSD 1986-06-xx [QCU] 473 1986-04-05 [KB], [DOC] 4744.3BSD Tahoe 1988-06-15 [QCU], [DOC] 4754.3BSD NET/1 1988-11-xx [QCU] 476 1989-01-01 [DOC] 4774.3BSD Reno 1990-06-29 [QCU], [DOC] 4784.3BSD NET/2 1991-06-28 [QCU], [DOC] 479 480BSD/386 ALPHA 1991-12-xx [BSDI] 481 first code released to people outside BSDI 482386BSD 0.0 1992-02-xx [DOC] 483BSD/386 0.3.1 1992-04-xx [BSDI] first ext. beta; B customers 484BSD/386 0.3.3 1992-06-xx [BSDI] first CDROM version 485386BSD 0.1 1992-07-28 [DOC] 4864.4BSD Alpha 1992-07-07 487BSD/386 0.9.3 1992-10-xx [BSDI] 488 first external gamma; G customers 489BSD/386 0.9.4 1992-12-xx [BSDI] 490 would have been 1.0 except for request 491 for preliminary injunction 492BSD/386 1.0 1993-03-xx [BSDI] 493 injunction denied; first official release 494NetBSD 0.8 1993-04-20 [NBD] 4954.4BSD 1993-06-01 [USE] 496NetBSD 0.9 1993-08-23 [NBD] 497FreeBSD 1.0 1993-11-01 [FBD] 498FreeBSD 1.0.2 1993-11-14 [FBD] 499 supersedes 1.0 13 days after release. 500BSD/386 1.1 1994-02-xx [BSDI] 5014.4BSD Lite 1994-03-01 [USE] 502FreeBSD 1.1 1994-05-07 [FBD] 503FreeBSD 1.1.5 1994-06-30 [FBD] 504FreeBSD 1.1.5.1 1994-07-05 [FBD] 505 supersedes 1.1.5 5 days after release. 506NetBSD 1.0 1994-10-26 [NBD] 507386BSD 1.0 1994-11-12 [USE] 508FreeBSD 2.0 1994-11-23 [FBD] 509BSD/OS 2.0 1995-01-xx [BSDI] 4.4 lite based 510FreeBSD 2.0.5 1995-06-10 [FBD] 511BSD/OS 2.0.1 1995-06-xx [BSDI] 5124.4BSD Lite Release 2 1995-06-xx [44B] 513 the true final distribution from the CSRG 514FreeBSD 2.1.0 1995-11-19 [FBD] 515NetBSD 1.1 1995-11-26 [NBD] 516BSD/OS 2.1 1996-01-xx [BSDI] 517FreeBSD 2.1.5 1996-07-14 [FBD] 518NetBSD 1.2 1996-10-04 [NBD] 519OpenBSD 2.0 1996-10-18 [OBD] 520FreeBSD 2.1.6 1996-11-16 [FBD] 521FreeBSD 2.1.6.1 1996-11-25 [FBD] (sendmail security release) 522Rhapsody 1997-xx-xx 523FreeBSD 2.1.7 1997-02-20 [FBD] 524BSD/OS 3.0 1997-02-xx [BSDI] 4.4 lite2 based 525FreeBSD 2.2.0 1997-03-16 [FBD] 526FreeBSD 2.2.1 1997-03-25 [FBD] 527FreeBSD 2.2.2 1997-05-16 [FBD] 528NetBSD 1.2.1 1997-05-20 [NBD] (patch release) 529OpenBSD 2.1 1997-06-01 [OBD] 530FreeBSD 2.2.5 1997-10-22 [FBD] 531OpenBSD 2.2 1997-12-01 [OBD] 532NetBSD 1.3 1998-01-04 [NBD] 533FreeBSD 2.2.6 1998-03-25 [FBD] 534NetBSD 1.3.1 1998-03-09 [NBD] (patch release) 535BSD/OS 3.1 1998-03-xx [BSDI] 536OpenBSD 2.3 1998-05-19 [OBD] 537NetBSD 1.3.2 1998-05-29 [NBD] (patch release) 538FreeBSD 2.2.7 1998-07-22 [FBD] 539BSD/OS 4.0 1998-08-xx [BSDI] 540 2-lock MP support, ELF executables 541FreeBSD 3.0 1998-10-16 [FBD] 542 FreeBSD-3.0 is a snapshot from -current, 543 while 3.1 and 3.2 are from 3.x-stable which 544 was branched quite some time after 3.0-release 545FreeBSD 2.2.8 1998-11-29 [FBD] 546OpenBSD 2.4 1998-12-01 [OBD] 547NetBSD 1.3.3 1998-12-23 [NBD] (patch release) 548FreeBSD 3.1 1999-02-15 [FBD] 549BSD/OS 4.0.1 1999-03-xx [BSDI] 550NetBSD 1.4 1999-05-12 [NBD] 551FreeBSD 3.2 1999-05-17 [FBD] 552OpenBSD 2.5 1999-05-19 [OBD] 553NetBSD 1.4.1 1999-08-26 [NBD] (patch release) 554FreeBSD 3.3 1999-09-17 [FBD] 555OpenBSD 2.6 1999-12-01 [OBD] 556FreeBSD 3.4 1999-12-20 [FBD] 557BSD/OS 4.1 1999-12-xx [BSDI] 558FreeBSD 4.0 2000-03-13 [FBD] 559NetBSD 1.4.2 2000-03-19 [NBD] (patch release) 560OpenBSD 2.7 2000-06-15 [OBD] 561FreeBSD 3.5 2000-06-24 [FBD] 562FreeBSD 4.1 2000-07-27 [FBD] 563FreeBSD 3.5.1 2000-07-28 [FBD] 564FreeBSD 4.1.1 2000-09-25 [FBD] (a network-only patch release) 565FreeBSD 4.2 2000-11-21 [FBD] 566NetBSD 1.4.3 2000-11-25 [NBD] (patch release) 567BSD/OS 4.2 2000-11-29 [BSDI] 568OpenBSD 2.8 2000-12-01 [OBD] 569NetBSD 1.5 2000-12-06 [NBD] 570Mac OS X 10.0 2001-03-24 [APL] 571FreeBSD 4.3 2001-04-20 [FBD] 572OpenBSD 2.9 2001-06-01 [OBD] 573NetBSD 1.5.1 2001-07-11 [NBD] (patch release) 574NetBSD 1.5.2 2001-09-13 [NBD] (patch release) 575FreeBSD 4.4 2001-09-18 [FBD] 576Mac OS X 10.1 2001-09-29 [APL] 577OpenBSD 3.0 2001-12-01 [OBD] 578FreeBSD 4.5 2002-01-29 [FBD] 579BSD/OS 4.3 2002-03-14 [WRS] 580OpenBSD 3.1 2002-05-19 [OBD] 581FreeBSD 4.6 2002-06-15 [FBD] 582NetBSD 1.5.3 2002-07-22 [NBD] (patch release) 583FreeBSD 4.6.2 2002-08-15 [FBD] (patch release) 584Mac OS X 10.2 2002-08-23 [APL] 585NetBSD 1.6 2002-09-14 [NBD] 586FreeBSD 4.7 2002-10-08 [FBD] 587OpenBSD 3.2 2002-11-01 [OBD] 588FreeBSD 5.0 2003-01-17 [FBD] 589 FreeBSD 5.0 is a separate branch off of 590 -current, similar to 3.0. 591FreeBSD 4.8 2003-04-03 [FBD] 592NetBSD 1.6.1 2003-04-21 [NBD] (patch release) 593OpenBSD 3.3 2003-05-01 [OBD] 594BSD/OS 5.0 2003-05-?? [WRS] 595FreeBSD 5.1 2003-06-09 [FBD] 596Mac OS X 10.3 2003-10-24 [APL] 597FreeBSD 4.9 2003-10-28 [FBD] 598BSD/OS 5.1 ISE 2003-10-?? [WRS] (final version) 599OpenBSD 3.4 2003-11-01 [OBD] 600FreeBSD 5.2 2004-01-12 [FBD] 601FreeBSD 5.2.1 2004-02-22 [FBD] (patch release) 602NetBSD 1.6.2 2004-03-01 [NBD] (patch release) 603OpenBSD 3.5 2004-04-01 [OBD] 604FreeBSD 4.10 2004-05-27 [FBD] 605DragonFly 1.0 2004-07-12 [DFB] 606OpenBSD 3.6 2004-10-29 [OBD] 607FreeBSD 5.3 2004-11-06 [FBD] 608NetBSD 2.0 2004-12-09 [NBD] 609FreeBSD 4.11 2005-01-25 [FBD] 610DragonFly 1.2.0 2005-04-08 [DFB] 611NetBSD 2.0.2 2005-04-14 [NBD] (security/critical release) 612Mac OS X 10.4 2005-04-29 [APL] 613FreeBSD 5.4 2005-05-09 [FBD] 614OpenBSD 3.7 2005-05-19 [OBD] 615NetBSD 2.0.3 2005-10-31 [NBD] (security/critical release) 616OpenBSD 3.8 2005-11-01 [OBD] 617FreeBSD 6.0 2005-11-01 [FBD] 618NetBSD 2.1 2005-11-02 [NBD] 619NetBSD 3.0 2005-12-23 [NBD] 620DragonFly 1.4.0 2006-01-08 [DFB] 621FreeBSD 2.2.9 2006-04-01 [FBD] 622OpenBSD 3.9 2006-05-01 [OBD] 623FreeBSD 6.1 2006-05-08 [FBD] 624FreeBSD 5.5 2006-05-25 [FBD] 625NetBSD 3.0.1 2006-07-24 [NBD] (security/critical release) 626DragonFly 1.6.0 2006-07-24 [DFB] 627OpenBSD 4.0 2006-11-01 [OBD] 628NetBSD 3.0.2 2006-11-04 [NBD] (security/critical release) 629NetBSD 3.1 2006-11-04 [NBD] 630FreeBSD 6.2 2007-01-15 [FBD] 631DragonFly 1.8.0 2007-01-30 [DFB] 632OpenBSD 4.1 2007-05-01 [OBD] 633DragonFly 1.10.0 2007-08-06 [DFB] 634Mac OS X 10.5 2007-10-26 [APL] 635OpenBSD 4.2 2007-11-01 [OBD] 636NetBSD 4.0 2007-12-19 [NBD] 637FreeBSD 6.3 2008-01-18 [FBD] 638DragonFly 1.12.0 2008-02-26 [DFB] 639FreeBSD 7.0 2008-02-27 [FBD] 640OpenBSD 4.3 2008-05-01 [OBD] 641DragonFly 2.0.0 2008-07-21 [DFB] 642OpenBSD 4.4 2008-11-01 [OBD] 643FreeBSD 6.4 2008-11-28 [FBD] 644FreeBSD 7.1 2009-01-04 [FBD] 645DragonFly 2.2.0 2009-02-17 [DFB] 646NetBSD 5.0 2009-04-29 [NBD] 647OpenBSD 4.5 2009-05-01 [OBD] 648FreeBSD 7.2 2009-05-04 [FBD] 649Mac OS X 10.6 2009-06-08 [APL] 650NetBSD 5.0.1 2009-08-02 [NBD] (security/critical release) 651DragonFly 2.4.0 2009-09-16 [DFB] 652OpenBSD 4.6 2009-10-18 [OBD] 653FreeBSD 8.0 2009-11-26 [FBD] 654NetBSD 5.0.2 2010-02-12 [NBD] (security/critical release) 655FreeBSD 7.3 2010-03-23 [FBD] 656DragonFly 2.6.0 2010-03-28 [DFB] 657OpenBSD 4.7 2010-05-19 [OBD] 658FreeBSD 8.1 2010-07-24 [FBD] 659DragonFly 2.8.2 2010-10-30 [DFB] 660OpenBSD 4.8 2010-11-01 [OBD] 661NetBSD 5.1 2010-11-19 [NBD] 662FreeBSD 7.4 2011-02-24 [FBD] 663FreeBSD 8.2 2011-02-24 [FBD] 664DragonFly 2.10.1 2011-04-26 [DFB] 665OpenBSD 4.9 2011-05-01 [OBD] 666Mac OS X 10.7 2011-07-20 [APL] 667OpenBSD 5.0 2011-11-01 [OBD] 668FreeBSD 9.0 2012-01-12 [FBD] 669NetBSD 5.1.2 2012-02-02 [NBD] (security/critical release) 670DragonFly 3.0.1 2012-02-21 [DFB] 671FreeBSD 8.3 2012-04-18 [FBD] 672OpenBSD 5.1 2012-05-01 [OBD] 673Mac OS X 10.8 2012-07-25 [APL] 674NetBSD 6.0 2012-10-17 [NBD] 675OpenBSD 5.2 2012-11-01 [OBD] 676DragonFly 3.2.1 2012-11-02 [DFB] 677NetBSD 5.2 2012-12-03 [NBD] 678NetBSD 6.0.1 2012-12-26 [NBD] (security/critical release) 679FreeBSD 9.1 2012-12-30 [FBD] 680DragonFly 3.4.1 2013-04-29 [DFB] 681OpenBSD 5.3 2013-05-01 [OBD] 682NetBSD 6.0.2 2013-05-18 [NBD] (security/critical release) 683NetBSD 6.1 2013-05-18 [NBD] 684FreeBSD 8.4 2013-06-07 [FBD] 685NetBSD 6.1.1 2013-08-22 [NBD] 686NetBSD 5.1.3 2013-09-29 [NBD] 687NetBSD 5.2.1 2013-09-29 [NBD] 688FreeBSD 9.2 2013-09-30 [FBD] 689NetBSD 6.0.3 2013-09-30 [NBD] 690NetBSD 6.1.2 2013-09-30 [NBD] 691Mac OS X 10.9 2013-10-22 [APL] 692OpenBSD 5.4 2013-11-01 [OBD] 693DragonFly 3.6.0 2013-11-25 [DFB] 694FreeBSD 10.0 2014-01-20 [FBD] 695NetBSD 5.1.4 2014-01-25 [NBD] 696NetBSD 5.2.2 2014-01-25 [NBD] 697NetBSD 6.0.4 2014-01-25 [NBD] 698NetBSD 6.1.3 2014-01-25 [NBD] 699DragonFly 3.6.1 2014-02-22 [DFB] 700DragonFly 3.6.2 2014-04-10 [DFB] 701NetBSD 6.0.5 2014-04-12 [NBD] 702NetBSD 6.1.4 2014-04-12 [NBD] 703OpenBSD 5.5 2014-05-01 [OBD] 704DragonFly 3.8.0 2014-06-04 [DFB] 705DragonFly 3.8.1 2014-06-16 [DFB] 706DragonFly 3.6.3 2014-06-17 [DFB] 707FreeBSD 9.3 2014-07-05 [FBD] 708DragonFly 3.8.2 2014-08-08 [DFB] 709NetBSD 6.0.6 2014-09-22 [NBD] 710NetBSD 6.1.5 2014-09-22 [NBD] 711Mac OS X 10.10 2014-10-16 [APL] 712OpenBSD 5.6 2014-11-01 [OBD] 713FreeBSD 10.1 2014-11-14 [FBD] 714DragonFly 4.0.1 2014-11-25 [DFB] 715DragonFly 4.0.2 2015-01-07 [DFB] 716DragonFly 4.0.3 2015-01-21 [DFB] 717DragonFly 4.0.4 2015-03-09 [DFB] 718DragonFly 4.0.5 2015-03-23 [DFB] 719OpenBSD 5.7 2015-05-01 [OBD] 720DragonFly 4.2.0 2015-06-29 [DFB] 721FreeBSD 10.2 2015-08-13 [FBD] 722NetBSD 7.0 2015-09-25 [NBD] 723OS X 10.11 2015-09-30 [APL] 724OpenBSD 5.8 2015-10-18 [OBD] 725DragonFly 4.4.1 2015-12-07 [DFB] 726OpenBSD 5.9 2016-03-29 [OBD] 727FreeBSD 10.3 2016-04-04 [FBD] 728NetBSD 7.0.1 2016-05-22 [NBD] 729DragonFly 4.6.0 2016-08-02 [DFB] 730OpenBSD 6.0 2016-09-01 [OBD] 731macOS 10.12 2016-09-20 [APL] 732FreeBSD 11.0 2016-10-10 [FBD] 733NetBSD 7.0.2 2016-10-21 [NBD] 734NetBSD 7.1 2017-03-11 [NBD] 735DragonFly 4.8.0 2017-03-27 [DFB] 736OpenBSD 6.1 2017-04-11 [OBD] 737FreeBSD 11.1 2017-07-26 [FBD] 738macOS 10.13 2017-09-25 [APL] 739FreeBSD 10.4 2017-10-03 [FBD] 740OpenBSD 6.2 2017-10-09 [OBD] 741DragonFly 5.0.0 2017-10-16 [DFB] 742DragonFly 5.0.1 2017-11-06 [DFB] 743DragonFly 5.0.2 2017-12-04 [DFB] 744NetBSD 7.1.1 2017-12-22 [NBD] 745 746Bibliography 747------------------------ 748 749Leffler, Samuel J., Marshall Kirk McKusick, Michael J Karels and John 750Quarterman. The Design and Implementation of the 4.3BSD UNIX Operating 751System. Reading, Mass. Addison-Wesley, 1989. ISBN 0-201-06196-1 752 753Salus, Peter H. A quarter century of UNIX. Addison-Wesley Publishing 754Company, Inc., 1994. ISBN 0-201-54777-5 755 756McKusick, Marshall Kirk, Keith Bostic, Michael J Karels, and John 757Quarterman. The Design and Implementation of the 4.4BSD Operating 758System. Reading, Mass. Addison-Wesley, 1996. ISBN 0-201-54979-4 759 760McKusick, Marshall Kirk, George Neville-Neil. The Design and 761Implementation of the FreeBSD Operating System. 762Addison-Wesley Professional, Published: Aug 2, 2004. ISBN 0-201-70245-2 763 764McKusick, Marshall Kirk, George Neville-Neil, Robert Watson. The 765Design and Implementation of the FreeBSD Operating System, 2nd Edition. 766Pearson Education, Inc., 2014. ISBN 0-321-96897-2 767 768Doug McIlroy. Research Unix Reader. 769 770Michael G. Brown. The Role of BSD in the Development of Unix. 771Presented to the Tasmanian Unix Special Interest Group of the 772Australian Computer Society, Hobart, August 1993. 773 774Peter H. Salus. Unix at 25. Byte Magazine, October 1994. 775URL: http://www.byte.com/art/9410/sec8/art3.htm 776 777Andreas Klemm, Lars Köller. If you're going to San Francisco ... 778Die freien BSD-Varianten von Unix. c't April 1997, page 368ff. 779 780BSD Release Announcements collection. 781URL: https://www.FreeBSD.org/releases/ 782 783BSD Hypertext Man Pages 784URL: https://www.FreeBSD.org/cgi/man.cgi 785 786UNIX history graphing project 787URL: http://minnie.tuhs.org/Unix_History/index.html 788 789UNIX history 790URL: http://www.levenez.com/unix/ 791 792James Howard: The BSD Family Tree 793URL: http://ezine.daemonnews.org/200104/bsd_family.html 794("what are the differences between FreeBSD, NetBSD, and OpenBSD?") 795 796 797Acknowledgments 798--------------- 799 800Josh Gilliam for suggestions, bug fixes, and finding very old 801original BSD announcements from Usenet or tapes. 802 803Steven M. Schultz for providing 2.8BSD, 2.10BSD, 2.11BSD manual pages. 804 805-- 806Copyright (c) 1997-2012 Wolfram Schneider <wosch@FreeBSD.ORG> 807URL: http://svnweb.freebsd.org/base/head/share/misc/bsd-family-tree 808 809$FreeBSD: head/share/misc/bsd-family-tree 327361 2017-12-29 21:37:36Z maxim $ 810