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 | | | | | | | | 359 | | | | | | | | 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 5.0.1 365 | | | | | | | 366 | | | | NetBSD 7.1.1 | DragonFly 5.0.2 367 | | | | | | | 368 | | | | NetBSD 7.1.2 | | 369 | | | | | | | 370 | | | | | OpenBSD 6.3 | 371 | | | | | | DragonFly 5.2.0 372 | | | | v | | 373 | v | | | | 374 | | | | | 375FreeBSD 12 -current | NetBSD -current OpenBSD -current DragonFly -current 376 | | | | | 377 v v v v v 378 379Time 380---------------- 381 382Time tolerance +/- 6 months, depending on which book/article you read; if it 383was the announcement in Usenet or if it was available as tape. 384 385[44B] McKusick, Marshall Kirk, Keith Bostic, Michael J Karels, 386 and John Quarterman. The Design and Implementation of 387 the 4.4BSD Operating System. 388[APL] Apple website [https://www.apple.com/macosx/] 389[BSDI] Berkeley Software Design, Inc. 390[DFB] DragonFlyBSD Project, The. 391[DOC] README, COPYRIGHT on tape. 392[FBD] FreeBSD Project, The. 393[KB] Keith Bostic. BSD2.10 available from Usenix. comp.unix.sources, 394 Volume 11, Info 4, April, 1987. 395[KKK] Mike Karels, Kirk McKusick, and Keith Bostic. tahoe announcement. 396 comp.bugs.4bsd.ucb-fixes, June 15, 1988. 397[KSJ] Michael J. Karels, Carl F. Smith, and William F. Jolitz. 398 Changes in the Kernel in 2.9BSD. Second Berkeley Software 399 Distribution UNIX Version 2.9, July, 1983. 400[NBD] NetBSD Project, The. 401[OBD] OpenBSD Project, The. 402[QCU] Salus, Peter H. A quarter century of UNIX. 403[SMS] Steven M. Schultz. 2.11BSD, UNIX for the PDP-11. 404[TUHS] The Unix Historical Society. http://minnie.tuhs.org/Unix_History/. 405[USE] Usenet announcement. 406[WRS] Wind River Systems, Inc. 407[dmr] Dennis Ritchie, via E-Mail 408 409Multics 1965 410UNIX Summer 1969 411 DEC PDP-7 412First Edition 1971-11-03 [QCU] 413 DEC PDP-11/20, Assembler 414Second Edition 1972-06-12 [QCU] 415 10 UNIX installations 416Third Edition 1973-02-xx [QCU] 417 Pipes, 16 installations 418Fourth Edition 1973-11-xx [QCU] 419 rewriting in C effected, 420 above 30 installations 421Fifth Edition 1974-06-xx [QCU] 422 above 50 installations 423Sixth Edition 1975-05-xx [QCU] 424 port to DEC Vax 425Seventh Edition 1979-01-xx [QCU] 1979-01-10 [TUHS] 426 first portable UNIX 427Eighth Edition 1985-02-xx [QCU] 428 VAX 11/750, VAX 11/780 [dmr] 429 descended from 4.1c BSD [dmr] 430 descended from 4.1 BSD [44B] 431 scooping-out and replacement of the character-device 432 and networking part by the streams mechanism 433 434Ninth Edition 1986-09-xx [QCU] 435Tenth Edition 1989-10-xx [QCU] 436 4371BSD late 1977 438 1978-03-09 [QCU] 439 PDP-11, Pascal, ex(1) 440 30 free copies of 1BSD sent out 441 35 tapes sold for 50 USD [QCU] 4422BSD mid 1978 [QCU] 1979-05-10 [TUHS] 443 75 2BSD tapes shipped 4442.79BSD 1980-04-xx [TUHS] 4452.8BSD 1981-07-xx [KSJ] 446 4472.8.1BSD 1982-01-xx [QCU] 448 set of performance improvements 4492.9BSD 1983-07-xx [KSJ] 4502.9.1BSD 1983-11-xx [TUHS] 4512.9BSD-Seismo 1985-08-xx [SMS] 4522.10BSD 1987-04-xx [KKK] 4532.10.1BSD 1989-01-xx [SMS] 4542.11BSD 1992-02-xx [SMS] 4552.11BSD rev #430 1999-12-13 [SMS] 456 45732V 1978-1[01]-xx [QCU] 1979-03-26 [TUHS] 4583BSD late 1979 [QCU] March 1980 [TUHS] 459 virtual memory, page replacement, 460 demand paging 4614.0BSD 1980-10-xx 4624.1BSD 1981-07-08 [DOC] 4634.1aBSD 1982-04-xx 464 alpha release, 100 sites, networking [44B] 4654.1bBSD internal release, fast filesystem [44B] 4664.1cBSD late 1982 467 beta release, IPC [44B] 4684.2BSD 1983-09-xx [QCU] 469 1983-08-03 [DOC] 4704.3BSD 1986-06-xx [QCU] 471 1986-04-05 [KB], [DOC] 4724.3BSD Tahoe 1988-06-15 [QCU], [DOC] 4734.3BSD NET/1 1988-11-xx [QCU] 474 1989-01-01 [DOC] 4754.3BSD Reno 1990-06-29 [QCU], [DOC] 4764.3BSD NET/2 1991-06-28 [QCU], [DOC] 477 478BSD/386 ALPHA 1991-12-xx [BSDI] 479 first code released to people outside BSDI 480386BSD 0.0 1992-02-xx [DOC] 481BSD/386 0.3.1 1992-04-xx [BSDI] first ext. beta; B customers 482BSD/386 0.3.3 1992-06-xx [BSDI] first CDROM version 483386BSD 0.1 1992-07-28 [DOC] 4844.4BSD Alpha 1992-07-07 485BSD/386 0.9.3 1992-10-xx [BSDI] 486 first external gamma; G customers 487BSD/386 0.9.4 1992-12-xx [BSDI] 488 would have been 1.0 except for request 489 for preliminary injunction 490BSD/386 1.0 1993-03-xx [BSDI] 491 injunction denied; first official release 492NetBSD 0.8 1993-04-20 [NBD] 4934.4BSD 1993-06-01 [USE] 494NetBSD 0.9 1993-08-23 [NBD] 495FreeBSD 1.0 1993-11-01 [FBD] 496FreeBSD 1.0.2 1993-11-14 [FBD] 497 supersedes 1.0 13 days after release. 498BSD/386 1.1 1994-02-xx [BSDI] 4994.4BSD Lite 1994-03-01 [USE] 500FreeBSD 1.1 1994-05-07 [FBD] 501FreeBSD 1.1.5 1994-06-30 [FBD] 502FreeBSD 1.1.5.1 1994-07-05 [FBD] 503 supersedes 1.1.5 5 days after release. 504NetBSD 1.0 1994-10-26 [NBD] 505386BSD 1.0 1994-11-12 [USE] 506FreeBSD 2.0 1994-11-23 [FBD] 507BSD/OS 2.0 1995-01-xx [BSDI] 4.4 lite based 508FreeBSD 2.0.5 1995-06-10 [FBD] 509BSD/OS 2.0.1 1995-06-xx [BSDI] 5104.4BSD Lite Release 2 1995-06-xx [44B] 511 the true final distribution from the CSRG 512FreeBSD 2.1.0 1995-11-19 [FBD] 513NetBSD 1.1 1995-11-26 [NBD] 514BSD/OS 2.1 1996-01-xx [BSDI] 515FreeBSD 2.1.5 1996-07-14 [FBD] 516NetBSD 1.2 1996-10-04 [NBD] 517OpenBSD 2.0 1996-10-18 [OBD] 518FreeBSD 2.1.6 1996-11-16 [FBD] 519FreeBSD 2.1.6.1 1996-11-25 [FBD] (sendmail security release) 520Rhapsody 1997-xx-xx 521FreeBSD 2.1.7 1997-02-20 [FBD] 522BSD/OS 3.0 1997-02-xx [BSDI] 4.4 lite2 based 523FreeBSD 2.2.0 1997-03-16 [FBD] 524FreeBSD 2.2.1 1997-03-25 [FBD] 525FreeBSD 2.2.2 1997-05-16 [FBD] 526NetBSD 1.2.1 1997-05-20 [NBD] (patch release) 527OpenBSD 2.1 1997-06-01 [OBD] 528FreeBSD 2.2.5 1997-10-22 [FBD] 529OpenBSD 2.2 1997-12-01 [OBD] 530NetBSD 1.3 1998-01-04 [NBD] 531FreeBSD 2.2.6 1998-03-25 [FBD] 532NetBSD 1.3.1 1998-03-09 [NBD] (patch release) 533BSD/OS 3.1 1998-03-xx [BSDI] 534OpenBSD 2.3 1998-05-19 [OBD] 535NetBSD 1.3.2 1998-05-29 [NBD] (patch release) 536FreeBSD 2.2.7 1998-07-22 [FBD] 537BSD/OS 4.0 1998-08-xx [BSDI] 538 2-lock MP support, ELF executables 539FreeBSD 3.0 1998-10-16 [FBD] 540 FreeBSD-3.0 is a snapshot from -current, 541 while 3.1 and 3.2 are from 3.x-stable which 542 was branched quite some time after 3.0-release 543FreeBSD 2.2.8 1998-11-29 [FBD] 544OpenBSD 2.4 1998-12-01 [OBD] 545NetBSD 1.3.3 1998-12-23 [NBD] (patch release) 546FreeBSD 3.1 1999-02-15 [FBD] 547BSD/OS 4.0.1 1999-03-xx [BSDI] 548NetBSD 1.4 1999-05-12 [NBD] 549FreeBSD 3.2 1999-05-17 [FBD] 550OpenBSD 2.5 1999-05-19 [OBD] 551NetBSD 1.4.1 1999-08-26 [NBD] (patch release) 552FreeBSD 3.3 1999-09-17 [FBD] 553OpenBSD 2.6 1999-12-01 [OBD] 554FreeBSD 3.4 1999-12-20 [FBD] 555BSD/OS 4.1 1999-12-xx [BSDI] 556FreeBSD 4.0 2000-03-13 [FBD] 557NetBSD 1.4.2 2000-03-19 [NBD] (patch release) 558OpenBSD 2.7 2000-06-15 [OBD] 559FreeBSD 3.5 2000-06-24 [FBD] 560FreeBSD 4.1 2000-07-27 [FBD] 561FreeBSD 3.5.1 2000-07-28 [FBD] 562FreeBSD 4.1.1 2000-09-25 [FBD] (a network-only patch release) 563FreeBSD 4.2 2000-11-21 [FBD] 564NetBSD 1.4.3 2000-11-25 [NBD] (patch release) 565BSD/OS 4.2 2000-11-29 [BSDI] 566OpenBSD 2.8 2000-12-01 [OBD] 567NetBSD 1.5 2000-12-06 [NBD] 568Mac OS X 10.0 2001-03-24 [APL] 569FreeBSD 4.3 2001-04-20 [FBD] 570OpenBSD 2.9 2001-06-01 [OBD] 571NetBSD 1.5.1 2001-07-11 [NBD] (patch release) 572NetBSD 1.5.2 2001-09-13 [NBD] (patch release) 573FreeBSD 4.4 2001-09-18 [FBD] 574Mac OS X 10.1 2001-09-29 [APL] 575OpenBSD 3.0 2001-12-01 [OBD] 576FreeBSD 4.5 2002-01-29 [FBD] 577BSD/OS 4.3 2002-03-14 [WRS] 578OpenBSD 3.1 2002-05-19 [OBD] 579FreeBSD 4.6 2002-06-15 [FBD] 580NetBSD 1.5.3 2002-07-22 [NBD] (patch release) 581FreeBSD 4.6.2 2002-08-15 [FBD] (patch release) 582Mac OS X 10.2 2002-08-23 [APL] 583NetBSD 1.6 2002-09-14 [NBD] 584FreeBSD 4.7 2002-10-08 [FBD] 585OpenBSD 3.2 2002-11-01 [OBD] 586FreeBSD 5.0 2003-01-17 [FBD] 587 FreeBSD 5.0 is a separate branch off of 588 -current, similar to 3.0. 589FreeBSD 4.8 2003-04-03 [FBD] 590NetBSD 1.6.1 2003-04-21 [NBD] (patch release) 591OpenBSD 3.3 2003-05-01 [OBD] 592BSD/OS 5.0 2003-05-?? [WRS] 593FreeBSD 5.1 2003-06-09 [FBD] 594Mac OS X 10.3 2003-10-24 [APL] 595FreeBSD 4.9 2003-10-28 [FBD] 596BSD/OS 5.1 ISE 2003-10-?? [WRS] (final version) 597OpenBSD 3.4 2003-11-01 [OBD] 598FreeBSD 5.2 2004-01-12 [FBD] 599FreeBSD 5.2.1 2004-02-22 [FBD] (patch release) 600NetBSD 1.6.2 2004-03-01 [NBD] (patch release) 601OpenBSD 3.5 2004-04-01 [OBD] 602FreeBSD 4.10 2004-05-27 [FBD] 603DragonFly 1.0 2004-07-12 [DFB] 604OpenBSD 3.6 2004-10-29 [OBD] 605FreeBSD 5.3 2004-11-06 [FBD] 606NetBSD 2.0 2004-12-09 [NBD] 607FreeBSD 4.11 2005-01-25 [FBD] 608DragonFly 1.2.0 2005-04-08 [DFB] 609NetBSD 2.0.2 2005-04-14 [NBD] (security/critical release) 610Mac OS X 10.4 2005-04-29 [APL] 611FreeBSD 5.4 2005-05-09 [FBD] 612OpenBSD 3.7 2005-05-19 [OBD] 613NetBSD 2.0.3 2005-10-31 [NBD] (security/critical release) 614OpenBSD 3.8 2005-11-01 [OBD] 615FreeBSD 6.0 2005-11-01 [FBD] 616NetBSD 2.1 2005-11-02 [NBD] 617NetBSD 3.0 2005-12-23 [NBD] 618DragonFly 1.4.0 2006-01-08 [DFB] 619FreeBSD 2.2.9 2006-04-01 [FBD] 620OpenBSD 3.9 2006-05-01 [OBD] 621FreeBSD 6.1 2006-05-08 [FBD] 622FreeBSD 5.5 2006-05-25 [FBD] 623NetBSD 3.0.1 2006-07-24 [NBD] (security/critical release) 624DragonFly 1.6.0 2006-07-24 [DFB] 625OpenBSD 4.0 2006-11-01 [OBD] 626NetBSD 3.0.2 2006-11-04 [NBD] (security/critical release) 627NetBSD 3.1 2006-11-04 [NBD] 628FreeBSD 6.2 2007-01-15 [FBD] 629DragonFly 1.8.0 2007-01-30 [DFB] 630OpenBSD 4.1 2007-05-01 [OBD] 631DragonFly 1.10.0 2007-08-06 [DFB] 632Mac OS X 10.5 2007-10-26 [APL] 633OpenBSD 4.2 2007-11-01 [OBD] 634NetBSD 4.0 2007-12-19 [NBD] 635FreeBSD 6.3 2008-01-18 [FBD] 636DragonFly 1.12.0 2008-02-26 [DFB] 637FreeBSD 7.0 2008-02-27 [FBD] 638OpenBSD 4.3 2008-05-01 [OBD] 639DragonFly 2.0.0 2008-07-21 [DFB] 640OpenBSD 4.4 2008-11-01 [OBD] 641FreeBSD 6.4 2008-11-28 [FBD] 642FreeBSD 7.1 2009-01-04 [FBD] 643DragonFly 2.2.0 2009-02-17 [DFB] 644NetBSD 5.0 2009-04-29 [NBD] 645OpenBSD 4.5 2009-05-01 [OBD] 646FreeBSD 7.2 2009-05-04 [FBD] 647Mac OS X 10.6 2009-06-08 [APL] 648NetBSD 5.0.1 2009-08-02 [NBD] (security/critical release) 649DragonFly 2.4.0 2009-09-16 [DFB] 650OpenBSD 4.6 2009-10-18 [OBD] 651FreeBSD 8.0 2009-11-26 [FBD] 652NetBSD 5.0.2 2010-02-12 [NBD] (security/critical release) 653FreeBSD 7.3 2010-03-23 [FBD] 654DragonFly 2.6.0 2010-03-28 [DFB] 655OpenBSD 4.7 2010-05-19 [OBD] 656FreeBSD 8.1 2010-07-24 [FBD] 657DragonFly 2.8.2 2010-10-30 [DFB] 658OpenBSD 4.8 2010-11-01 [OBD] 659NetBSD 5.1 2010-11-19 [NBD] 660FreeBSD 7.4 2011-02-24 [FBD] 661FreeBSD 8.2 2011-02-24 [FBD] 662DragonFly 2.10.1 2011-04-26 [DFB] 663OpenBSD 4.9 2011-05-01 [OBD] 664Mac OS X 10.7 2011-07-20 [APL] 665OpenBSD 5.0 2011-11-01 [OBD] 666FreeBSD 9.0 2012-01-12 [FBD] 667NetBSD 5.1.2 2012-02-02 [NBD] (security/critical release) 668DragonFly 3.0.1 2012-02-21 [DFB] 669FreeBSD 8.3 2012-04-18 [FBD] 670OpenBSD 5.1 2012-05-01 [OBD] 671Mac OS X 10.8 2012-07-25 [APL] 672NetBSD 6.0 2012-10-17 [NBD] 673OpenBSD 5.2 2012-11-01 [OBD] 674DragonFly 3.2.1 2012-11-02 [DFB] 675NetBSD 5.2 2012-12-03 [NBD] 676NetBSD 6.0.1 2012-12-26 [NBD] (security/critical release) 677FreeBSD 9.1 2012-12-30 [FBD] 678DragonFly 3.4.1 2013-04-29 [DFB] 679OpenBSD 5.3 2013-05-01 [OBD] 680NetBSD 6.0.2 2013-05-18 [NBD] (security/critical release) 681NetBSD 6.1 2013-05-18 [NBD] 682FreeBSD 8.4 2013-06-07 [FBD] 683NetBSD 6.1.1 2013-08-22 [NBD] 684NetBSD 5.1.3 2013-09-29 [NBD] 685NetBSD 5.2.1 2013-09-29 [NBD] 686FreeBSD 9.2 2013-09-30 [FBD] 687NetBSD 6.0.3 2013-09-30 [NBD] 688NetBSD 6.1.2 2013-09-30 [NBD] 689Mac OS X 10.9 2013-10-22 [APL] 690OpenBSD 5.4 2013-11-01 [OBD] 691DragonFly 3.6.0 2013-11-25 [DFB] 692FreeBSD 10.0 2014-01-20 [FBD] 693NetBSD 5.1.4 2014-01-25 [NBD] 694NetBSD 5.2.2 2014-01-25 [NBD] 695NetBSD 6.0.4 2014-01-25 [NBD] 696NetBSD 6.1.3 2014-01-25 [NBD] 697DragonFly 3.6.1 2014-02-22 [DFB] 698DragonFly 3.6.2 2014-04-10 [DFB] 699NetBSD 6.0.5 2014-04-12 [NBD] 700NetBSD 6.1.4 2014-04-12 [NBD] 701OpenBSD 5.5 2014-05-01 [OBD] 702DragonFly 3.8.0 2014-06-04 [DFB] 703DragonFly 3.8.1 2014-06-16 [DFB] 704DragonFly 3.6.3 2014-06-17 [DFB] 705FreeBSD 9.3 2014-07-05 [FBD] 706DragonFly 3.8.2 2014-08-08 [DFB] 707NetBSD 6.0.6 2014-09-22 [NBD] 708NetBSD 6.1.5 2014-09-22 [NBD] 709Mac OS X 10.10 2014-10-16 [APL] 710OpenBSD 5.6 2014-11-01 [OBD] 711FreeBSD 10.1 2014-11-14 [FBD] 712DragonFly 4.0.1 2014-11-25 [DFB] 713DragonFly 4.0.2 2015-01-07 [DFB] 714DragonFly 4.0.3 2015-01-21 [DFB] 715DragonFly 4.0.4 2015-03-09 [DFB] 716DragonFly 4.0.5 2015-03-23 [DFB] 717OpenBSD 5.7 2015-05-01 [OBD] 718DragonFly 4.2.0 2015-06-29 [DFB] 719FreeBSD 10.2 2015-08-13 [FBD] 720NetBSD 7.0 2015-09-25 [NBD] 721OS X 10.11 2015-09-30 [APL] 722OpenBSD 5.8 2015-10-18 [OBD] 723DragonFly 4.4.1 2015-12-07 [DFB] 724OpenBSD 5.9 2016-03-29 [OBD] 725FreeBSD 10.3 2016-04-04 [FBD] 726NetBSD 7.0.1 2016-05-22 [NBD] 727DragonFly 4.6.0 2016-08-02 [DFB] 728OpenBSD 6.0 2016-09-01 [OBD] 729macOS 10.12 2016-09-20 [APL] 730FreeBSD 11.0 2016-10-10 [FBD] 731NetBSD 7.0.2 2016-10-21 [NBD] 732NetBSD 7.1 2017-03-11 [NBD] 733DragonFly 4.8.0 2017-03-27 [DFB] 734OpenBSD 6.1 2017-04-11 [OBD] 735FreeBSD 11.1 2017-07-26 [FBD] 736macOS 10.13 2017-09-25 [APL] 737FreeBSD 10.4 2017-10-03 [FBD] 738OpenBSD 6.2 2017-10-09 [OBD] 739DragonFly 5.0.0 2017-10-16 [DFB] 740DragonFly 5.0.1 2017-11-06 [DFB] 741DragonFly 5.0.2 2017-12-04 [DFB] 742NetBSD 7.1.1 2017-12-22 [NBD] 743NetBSD 7.1.2 2018-03-15 [NBD] 744OpenBSD 6.3 2018-04-02 [OBD] 745DragonFly 5.2.0 2018-04-10 [DFB] 746 747Bibliography 748------------------------ 749 750Leffler, Samuel J., Marshall Kirk McKusick, Michael J Karels and John 751Quarterman. The Design and Implementation of the 4.3BSD UNIX Operating 752System. Reading, Mass. Addison-Wesley, 1989. ISBN 0-201-06196-1 753 754Salus, Peter H. A quarter century of UNIX. Addison-Wesley Publishing 755Company, Inc., 1994. ISBN 0-201-54777-5 756 757McKusick, Marshall Kirk, Keith Bostic, Michael J Karels, and John 758Quarterman. The Design and Implementation of the 4.4BSD Operating 759System. Reading, Mass. Addison-Wesley, 1996. ISBN 0-201-54979-4 760 761McKusick, Marshall Kirk, George Neville-Neil. The Design and 762Implementation of the FreeBSD Operating System. 763Addison-Wesley Professional, Published: Aug 2, 2004. ISBN 0-201-70245-2 764 765McKusick, Marshall Kirk, George Neville-Neil, Robert Watson. The 766Design and Implementation of the FreeBSD Operating System, 2nd Edition. 767Pearson Education, Inc., 2014. ISBN 0-321-96897-2 768 769Doug McIlroy. Research Unix Reader. 770 771Michael G. Brown. The Role of BSD in the Development of Unix. 772Presented to the Tasmanian Unix Special Interest Group of the 773Australian Computer Society, Hobart, August 1993. 774 775Peter H. Salus. Unix at 25. Byte Magazine, October 1994. 776URL: http://www.byte.com/art/9410/sec8/art3.htm 777 778Andreas Klemm, Lars Köller. If you're going to San Francisco ... 779Die freien BSD-Varianten von Unix. c't April 1997, page 368ff. 780 781BSD Release Announcements collection. 782URL: https://www.FreeBSD.org/releases/ 783 784BSD Hypertext Man Pages 785URL: https://www.FreeBSD.org/cgi/man.cgi 786 787UNIX history graphing project 788URL: http://minnie.tuhs.org/Unix_History/index.html 789 790UNIX history 791URL: http://www.levenez.com/unix/ 792 793James Howard: The BSD Family Tree 794URL: http://ezine.daemonnews.org/200104/bsd_family.html 795("what are the differences between FreeBSD, NetBSD, and OpenBSD?") 796 797 798Acknowledgments 799--------------- 800 801Josh Gilliam for suggestions, bug fixes, and finding very old 802original BSD announcements from Usenet or tapes. 803 804Steven M. Schultz for providing 2.8BSD, 2.10BSD, 2.11BSD manual pages. 805 806-- 807Copyright (c) 1997-2012 Wolfram Schneider <wosch@FreeBSD.ORG> 808URL: http://svnweb.freebsd.org/base/head/share/misc/bsd-family-tree 809 810$FreeBSD: head/share/misc/bsd-family-tree 332425 2018-04-12 07:39:24Z maxim $ 811