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 OpenBSD 4.5 | 233 | \ | | 5.0 | | 234 | \ | | / | \ | | 235 | | Mac OS X | | | \ | | 236 | | 10.6 | | | \ | | 237 | | | | | | NetBSD | DragonFly 2.4.0 238 | | | | | | 5.0.1 OpenBSD 4.6 | 239 | | | | | | | | | 240 *--FreeBSD | | | | | | | | 241 | 8.0 | | | | | | | | 242 | | FreeBSD | | | | NetBSD | | 243 | | 7.3 | | | | 5.0.2 | DragonFly 2.6.0 244 | | | | | | | OpenBSD 4.7 | 245 | FreeBSD | | | | | | | 246 | 8.1 | | | | | | | 247 | | | | | | | | DragonFly 2.8.2 248 | | | | | | | OpenBSD 4.8 | 249 | | | | | | *--NetBSD | | 250 | FreeBSD FreeBSD | | | 5.1 | | 251 | 8.2 7.4 | | | | | DragonFly 2.10.1 252 | | | | | | OpenBSD 4.9 | 253 | `-----. Mac OS X | | | | | 254 | \ 10.7 | | | | | 255 | | | | | | OpenBSD 5.0 | 256 *--FreeBSD | | | | | | | 257 | 9.0 | | | | NetBSD | DragonFly 3.0.1 258 | | FreeBSD | | | 5.1.2 | | 259 | | 8.3 | | | | | | 260 | | | | | | NetBSD | | 261 | | | | | | 5.1.3 | | 262 | | | | | | | | | 263 | | | | | | NetBSD | | 264 | | | | | | 5.1.4 | | 265 | | | | | | OpenBSD 5.1 | 266 | | | Mac OS X | `--------. | | 267 | | | 10.8 | | | | 268 | | | | *--NetBSD | | | 269 | | | | | 6.0 | | | 270 | | | | | | | | OpenBSD 5.2 DragonFly 3.2.1 271 | FreeBSD | | | | | NetBSD | | 272 | 9.1 | | | | | 5.2 | | 273 | | | | | | | | | | 274 | | | | | | | NetBSD | | 275 | | | | | | | 5.2.1 | | 276 | | | | | | | | | | 277 | | | | | | | NetBSD | | 278 | | | | | | | 5.2.2 | | 279 | | | | | | | | | 280 | | | | | | \ | | 281 | | | | | | NetBSD | | 282 | | | | | | 6.0.1 | | 283 | | | | | | | OpenBSD 5.3 DragonFly 3.4.1 284 | | | | | | NetBSD | | 285 | | | | | | 6.0.2 | | 286 | | | | | | | | | 287 | | | | | | NetBSD | | 288 | | | | | | 6.0.3 | | 289 | | | | | | | | | 290 | | | | | | NetBSD | | 291 | | | | | | 6.0.4 | | 292 | | | | | | | | | 293 | | | | | | NetBSD | | 294 | | | | | | 6.0.5 | | 295 | | | | | | | | | 296 | | | | | | NetBSD | | 297 | | | | | | 6.0.6 | | 298 | | | | | | | | 299 | | | | | *--NetBSD | | 300 | | | | | 6.1 | | 301 | | FreeBSD | | | | | 302 | | 8.4 | | NetBSD | | 303 | | | | | 6.1.1 | | 304 | | | | | | | 305 | FreeBSD | | NetBSD | | 306 | 9.2 | | 6.1.2 | | 307 | | Mac OS X | | | | 308 | | 10.9 | | OpenBSD 5.4 | 309 | `-----. | | | | DragonFly 3.6.0 310 | \ | | | | | 311 *--FreeBSD | | | NetBSD | | 312 | 10.0 | | | 6.1.3 | | 313 | | | | | | | | 314 | | | | | | | DragonFly 3.6.1 315 | | | | | | | | 316 | | | | | | | | 317 | | | | | | | DragonFly 3.6.2 318 | | | | | NetBSD | | 319 | | | | | 6.1.4 | | 320 | | | | | | | | 321 | | | | | | OpenBSD 5.5 | 322 | | | | | | | | 323 | | | | | | | DragonFly 3.8.0 324 | | | | | | | | 325 | | | | | | | | 326 | | | | | | | DragonFly 3.8.1 327 | | | | | | | | 328 | | | | | | | | 329 | | | | | | | DragonFly 3.6.3 330 | | | | | | | | 331 | | FreeBSD | | | | | 332 | | 9.3 | | | | | 333 | | | | NetBSD | DragonFly 3.8.2 334 | | | | 6.1.5 | | 335 | | Mac OS X | | | 336 | | 10.10 | | | 337 | | | | OpenBSD 5.6 | 338 | FreeBSD | | | | 339 | 10.1 | | | DragonFly 4.0.1 340 | | | | | | 341 | | | | | DragonFly 4.0.2 342 | | | | | | 343 | | | | | DragonFly 4.0.3 344 | | | | | | 345 | | | | | DragonFly 4.0.4 346 | | | | | | 347 | | | | | DragonFly 4.0.5 348 | | | | | | 349 | | | | OpenBSD 5.7 | 350 | | | | | DragonFly 4.2.0 351 | FreeBSD | | | | 352 | 10.2 | | | | 353 | | macOS *--NetBSD 7.0 | | 354 | | 10.11 | | | OpenBSD 5.8 | 355 | | | | | `--. | DragonFly 4.4.1 356 | FreeBSD | | | | OpenBSD 5.9 | 357 | 10.3 | | | | | | 358 | | | | | NetBSD | | 359 | | | | | 7.0.1 | | 360 | `------. | | | | | DragonFly 4.6.0 361 | | | | | | | | 362 | | | | | | | | 363 *--FreeBSD | macOS | | | OpenBSD 6.0 | 364 | 11.0 | 10.12 | | NetBSD | | 365 | | | | | | 7.0.2 | | 366 | | | | | | | | 367 | | | | | *--NetBSD | | 368 | | | | | | 7.1 | | 369 | | | | | | | | | 370 | | | | | | | | | 371 | | | macOS | | | | DragonFly 4.8.0 372 | | | 10.13 | | | OpenBSD 6.1 | 373 | FreeBSD | | | | | | DragonFly 5.0.0 374 | 11.1 FreeBSD | | | | | | 375 | | 10.4 | | | | OpenBSD 6.2 DragonFly 5.0.1 376 | | | | | | | | 377 | `------. | | | NetBSD | DragonFly 5.0.2 378 | | | | | 7.1.1 | | 379 | | | | | | | | 380 | | | | | NetBSD | | 381 | | | | | 7.1.2 `--. | 382 | | | | | | | 383 | | | | `-----. OpenBSD 6.3 | 384 | | | *--NetBSD | | DragonFly 5.2.0 385 | | | | 8.0 | | | 386 | | | | | | | DragonFly 5.2.1 387 | | | | | | | | 388 | | | | | | | DragonFly 5.2.2 389 | FreeBSD | | | *--NetBSD | | 390 | 11.2 | | | 7.2 | | 391 | | macOS | | | | 392 | | 10.14 | | OpenBSD 6.4 | 393 | | | | | | | 394 | | | | | | DragonFly 5.4.0 395 *--FreeBSD | | | | | | 396 | 12.0 | | | | | DragonFly 5.4.1 397 | | | | | | OpenBSD 6.5 | 398 | | | | | | | | 399 | | | | | NetBSD | | 400 | | | | | 8.1 | DragonFly 5.6 401 | | | | | | | | 402 | | | | | | | DragonFly 5.6.1 403 | | FreeBSD macOS | | | | 404 | | 11.3 10.15 | | | | 405 | FreeBSD | | | OpenBSD 6.6 | 406 | 12.1 macOS | `-------. | | 407 | | 10.15.1 | | | DragonFly 5.6.2 408 | | | *--NetBSD | | | 409 | v | | 9.0 | | | 410 | | | | | | 411 | | | | | DragonFly 5.8 412 | | | | | | 413 | | | | | DragonFly 5.6.3 414 | | | NetBSD | | 415 | | | 8.2 | | 416 | | | | | 417FreeBSD 13 -current | NetBSD -current OpenBSD -current DragonFly -current 418 | | | | | 419 v v v v v 420 421Time 422---------------- 423 424Time tolerance +/- 6 months, depending on which book/article you read; if it 425was the announcement in Usenet or if it was available as tape. 426 427[44B] McKusick, Marshall Kirk, Keith Bostic, Michael J Karels, 428 and John Quarterman. The Design and Implementation of 429 the 4.4BSD Operating System. 430[APL] Apple website [https://www.apple.com/macosx/] 431[BSDI] Berkeley Software Design, Inc. 432[DFB] DragonFlyBSD Project, The. 433[DOC] README, COPYRIGHT on tape. 434[FBD] FreeBSD Project, The. 435[KB] Keith Bostic. BSD2.10 available from Usenix. comp.unix.sources, 436 Volume 11, Info 4, April, 1987. 437[KKK] Mike Karels, Kirk McKusick, and Keith Bostic. tahoe announcement. 438 comp.bugs.4bsd.ucb-fixes, June 15, 1988. 439[KSJ] Michael J. Karels, Carl F. Smith, and William F. Jolitz. 440 Changes in the Kernel in 2.9BSD. Second Berkeley Software 441 Distribution UNIX Version 2.9, July, 1983. 442[NBD] NetBSD Project, The. 443[OBD] OpenBSD Project, The. 444[QCU] Salus, Peter H. A quarter century of UNIX. 445[SMS] Steven M. Schultz. 2.11BSD, UNIX for the PDP-11. 446[TUHS] The Unix Historical Society. http://minnie.tuhs.org/Unix_History/. 447[USE] Usenet announcement. 448[WRS] Wind River Systems, Inc. 449[dmr] Dennis Ritchie, via E-Mail 450 451Multics 1965 452UNIX Summer 1969 453 DEC PDP-7 454First Edition 1971-11-03 [QCU] 455 DEC PDP-11/20, Assembler 456Second Edition 1972-06-12 [QCU] 457 10 UNIX installations 458Third Edition 1973-02-xx [QCU] 459 Pipes, 16 installations 460Fourth Edition 1973-11-xx [QCU] 461 rewriting in C effected, 462 above 30 installations 463Fifth Edition 1974-06-xx [QCU] 464 above 50 installations 465Sixth Edition 1975-05-xx [QCU] 466 port to DEC Vax 467Seventh Edition 1979-01-xx [QCU] 1979-01-10 [TUHS] 468 first portable UNIX 469Eighth Edition 1985-02-xx [QCU] 470 VAX 11/750, VAX 11/780 [dmr] 471 descended from 4.1c BSD [dmr] 472 descended from 4.1 BSD [44B] 473 scooping-out and replacement of the character-device 474 and networking part by the streams mechanism 475 476Ninth Edition 1986-09-xx [QCU] 477Tenth Edition 1989-10-xx [QCU] 478 4791BSD late 1977 480 1978-03-09 [QCU] 481 PDP-11, Pascal, ex(1) 482 30 free copies of 1BSD sent out 483 35 tapes sold for 50 USD [QCU] 4842BSD mid 1978 [QCU] 1979-05-10 [TUHS] 485 75 2BSD tapes shipped 4862.79BSD 1980-04-xx [TUHS] 4872.8BSD 1981-07-xx [KSJ] 488 4892.8.1BSD 1982-01-xx [QCU] 490 set of performance improvements 4912.9BSD 1983-07-xx [KSJ] 4922.9.1BSD 1983-11-xx [TUHS] 4932.9BSD-Seismo 1985-08-xx [SMS] 4942.10BSD 1987-04-xx [KKK] 4952.10.1BSD 1989-01-xx [SMS] 4962.11BSD 1992-02-xx [SMS] 4972.11BSD rev #430 1999-12-13 [SMS] 498 49932V 1978-1[01]-xx [QCU] 1979-03-26 [TUHS] 5003BSD late 1979 [QCU] March 1980 [TUHS] 501 virtual memory, page replacement, 502 demand paging 5034.0BSD 1980-10-xx 5044.1BSD 1981-07-08 [DOC] 5054.1aBSD 1982-04-xx 506 alpha release, 100 sites, networking [44B] 5074.1bBSD internal release, fast filesystem [44B] 5084.1cBSD late 1982 509 beta release, IPC [44B] 5104.2BSD 1983-09-xx [QCU] 511 1983-08-03 [DOC] 5124.3BSD 1986-06-xx [QCU] 513 1986-04-05 [KB], [DOC] 5144.3BSD Tahoe 1988-06-15 [QCU], [DOC] 5154.3BSD NET/1 1988-11-xx [QCU] 516 1989-01-01 [DOC] 5174.3BSD Reno 1990-06-29 [QCU], [DOC] 5184.3BSD NET/2 1991-06-28 [QCU], [DOC] 519 520BSD/386 ALPHA 1991-12-xx [BSDI] 521 first code released to people outside BSDI 522386BSD 0.0 1992-02-xx [DOC] 523BSD/386 0.3.1 1992-04-xx [BSDI] first ext. beta; B customers 524BSD/386 0.3.3 1992-06-xx [BSDI] first CDROM version 525386BSD 0.1 1992-07-28 [DOC] 5264.4BSD Alpha 1992-07-07 527BSD/386 0.9.3 1992-10-xx [BSDI] 528 first external gamma; G customers 529BSD/386 0.9.4 1992-12-xx [BSDI] 530 would have been 1.0 except for request 531 for preliminary injunction 532BSD/386 1.0 1993-03-xx [BSDI] 533 injunction denied; first official release 534NetBSD 0.8 1993-04-20 [NBD] 5354.4BSD 1993-06-01 [USE] 536NetBSD 0.9 1993-08-23 [NBD] 537FreeBSD 1.0 1993-11-01 [FBD] 538FreeBSD 1.0.2 1993-11-14 [FBD] 539 supersedes 1.0 13 days after release. 540BSD/386 1.1 1994-02-xx [BSDI] 5414.4BSD Lite 1994-03-01 [USE] 542FreeBSD 1.1 1994-05-07 [FBD] 543FreeBSD 1.1.5 1994-06-30 [FBD] 544FreeBSD 1.1.5.1 1994-07-05 [FBD] 545 supersedes 1.1.5 5 days after release. 546NetBSD 1.0 1994-10-26 [NBD] 547386BSD 1.0 1994-11-12 [USE] 548FreeBSD 2.0 1994-11-23 [FBD] 549BSD/OS 2.0 1995-01-xx [BSDI] 4.4 lite based 550FreeBSD 2.0.5 1995-06-10 [FBD] 551BSD/OS 2.0.1 1995-06-xx [BSDI] 5524.4BSD Lite Release 2 1995-06-xx [44B] 553 the true final distribution from the CSRG 554FreeBSD 2.1.0 1995-11-19 [FBD] 555NetBSD 1.1 1995-11-26 [NBD] 556BSD/OS 2.1 1996-01-xx [BSDI] 557FreeBSD 2.1.5 1996-07-14 [FBD] 558NetBSD 1.2 1996-10-04 [NBD] 559OpenBSD 2.0 1996-10-18 [OBD] 560FreeBSD 2.1.6 1996-11-16 [FBD] 561FreeBSD 2.1.6.1 1996-11-25 [FBD] (sendmail security release) 562Rhapsody 1997-xx-xx 563FreeBSD 2.1.7 1997-02-20 [FBD] 564BSD/OS 3.0 1997-02-xx [BSDI] 4.4 lite2 based 565FreeBSD 2.2.0 1997-03-16 [FBD] 566FreeBSD 2.2.1 1997-03-25 [FBD] 567FreeBSD 2.2.2 1997-05-16 [FBD] 568NetBSD 1.2.1 1997-05-20 [NBD] (patch release) 569OpenBSD 2.1 1997-06-01 [OBD] 570FreeBSD 2.2.5 1997-10-22 [FBD] 571OpenBSD 2.2 1997-12-01 [OBD] 572NetBSD 1.3 1998-01-04 [NBD] 573FreeBSD 2.2.6 1998-03-25 [FBD] 574NetBSD 1.3.1 1998-03-09 [NBD] (patch release) 575BSD/OS 3.1 1998-03-xx [BSDI] 576OpenBSD 2.3 1998-05-19 [OBD] 577NetBSD 1.3.2 1998-05-29 [NBD] (patch release) 578FreeBSD 2.2.7 1998-07-22 [FBD] 579BSD/OS 4.0 1998-08-xx [BSDI] 580 2-lock MP support, ELF executables 581FreeBSD 3.0 1998-10-16 [FBD] 582 FreeBSD-3.0 is a snapshot from -current, 583 while 3.1 and 3.2 are from 3.x-stable which 584 was branched quite some time after 3.0-release 585FreeBSD 2.2.8 1998-11-29 [FBD] 586OpenBSD 2.4 1998-12-01 [OBD] 587NetBSD 1.3.3 1998-12-23 [NBD] (patch release) 588FreeBSD 3.1 1999-02-15 [FBD] 589BSD/OS 4.0.1 1999-03-xx [BSDI] 590NetBSD 1.4 1999-05-12 [NBD] 591FreeBSD 3.2 1999-05-17 [FBD] 592OpenBSD 2.5 1999-05-19 [OBD] 593NetBSD 1.4.1 1999-08-26 [NBD] (patch release) 594FreeBSD 3.3 1999-09-17 [FBD] 595OpenBSD 2.6 1999-12-01 [OBD] 596FreeBSD 3.4 1999-12-20 [FBD] 597BSD/OS 4.1 1999-12-xx [BSDI] 598FreeBSD 4.0 2000-03-13 [FBD] 599NetBSD 1.4.2 2000-03-19 [NBD] (patch release) 600OpenBSD 2.7 2000-06-15 [OBD] 601FreeBSD 3.5 2000-06-24 [FBD] 602FreeBSD 4.1 2000-07-27 [FBD] 603FreeBSD 3.5.1 2000-07-28 [FBD] 604FreeBSD 4.1.1 2000-09-25 [FBD] (a network-only patch release) 605FreeBSD 4.2 2000-11-21 [FBD] 606NetBSD 1.4.3 2000-11-25 [NBD] (patch release) 607BSD/OS 4.2 2000-11-29 [BSDI] 608OpenBSD 2.8 2000-12-01 [OBD] 609NetBSD 1.5 2000-12-06 [NBD] 610Mac OS X 10.0 2001-03-24 [APL] 611FreeBSD 4.3 2001-04-20 [FBD] 612OpenBSD 2.9 2001-06-01 [OBD] 613NetBSD 1.5.1 2001-07-11 [NBD] (patch release) 614NetBSD 1.5.2 2001-09-13 [NBD] (patch release) 615FreeBSD 4.4 2001-09-18 [FBD] 616Mac OS X 10.1 2001-09-29 [APL] 617OpenBSD 3.0 2001-12-01 [OBD] 618FreeBSD 4.5 2002-01-29 [FBD] 619BSD/OS 4.3 2002-03-14 [WRS] 620OpenBSD 3.1 2002-05-19 [OBD] 621FreeBSD 4.6 2002-06-15 [FBD] 622NetBSD 1.5.3 2002-07-22 [NBD] (patch release) 623FreeBSD 4.6.2 2002-08-15 [FBD] (patch release) 624Mac OS X 10.2 2002-08-23 [APL] 625NetBSD 1.6 2002-09-14 [NBD] 626FreeBSD 4.7 2002-10-08 [FBD] 627OpenBSD 3.2 2002-11-01 [OBD] 628FreeBSD 5.0 2003-01-17 [FBD] 629 FreeBSD 5.0 is a separate branch off of 630 -current, similar to 3.0. 631FreeBSD 4.8 2003-04-03 [FBD] 632NetBSD 1.6.1 2003-04-21 [NBD] (patch release) 633OpenBSD 3.3 2003-05-01 [OBD] 634BSD/OS 5.0 2003-05-?? [WRS] 635FreeBSD 5.1 2003-06-09 [FBD] 636Mac OS X 10.3 2003-10-24 [APL] 637FreeBSD 4.9 2003-10-28 [FBD] 638BSD/OS 5.1 ISE 2003-10-?? [WRS] (final version) 639OpenBSD 3.4 2003-11-01 [OBD] 640FreeBSD 5.2 2004-01-12 [FBD] 641FreeBSD 5.2.1 2004-02-22 [FBD] (patch release) 642NetBSD 1.6.2 2004-03-01 [NBD] (patch release) 643OpenBSD 3.5 2004-04-01 [OBD] 644FreeBSD 4.10 2004-05-27 [FBD] 645DragonFly 1.0 2004-07-12 [DFB] 646OpenBSD 3.6 2004-10-29 [OBD] 647FreeBSD 5.3 2004-11-06 [FBD] 648NetBSD 2.0 2004-12-09 [NBD] 649FreeBSD 4.11 2005-01-25 [FBD] 650DragonFly 1.2.0 2005-04-08 [DFB] 651NetBSD 2.0.2 2005-04-14 [NBD] (security/critical release) 652Mac OS X 10.4 2005-04-29 [APL] 653FreeBSD 5.4 2005-05-09 [FBD] 654OpenBSD 3.7 2005-05-19 [OBD] 655NetBSD 2.0.3 2005-10-31 [NBD] (security/critical release) 656OpenBSD 3.8 2005-11-01 [OBD] 657FreeBSD 6.0 2005-11-01 [FBD] 658NetBSD 2.1 2005-11-02 [NBD] 659NetBSD 3.0 2005-12-23 [NBD] 660DragonFly 1.4.0 2006-01-08 [DFB] 661FreeBSD 2.2.9 2006-04-01 [FBD] 662OpenBSD 3.9 2006-05-01 [OBD] 663FreeBSD 6.1 2006-05-08 [FBD] 664FreeBSD 5.5 2006-05-25 [FBD] 665NetBSD 3.0.1 2006-07-24 [NBD] (security/critical release) 666DragonFly 1.6.0 2006-07-24 [DFB] 667OpenBSD 4.0 2006-11-01 [OBD] 668NetBSD 3.0.2 2006-11-04 [NBD] (security/critical release) 669NetBSD 3.1 2006-11-04 [NBD] 670FreeBSD 6.2 2007-01-15 [FBD] 671DragonFly 1.8.0 2007-01-30 [DFB] 672OpenBSD 4.1 2007-05-01 [OBD] 673DragonFly 1.10.0 2007-08-06 [DFB] 674Mac OS X 10.5 2007-10-26 [APL] 675OpenBSD 4.2 2007-11-01 [OBD] 676NetBSD 4.0 2007-12-19 [NBD] 677FreeBSD 6.3 2008-01-18 [FBD] 678DragonFly 1.12.0 2008-02-26 [DFB] 679FreeBSD 7.0 2008-02-27 [FBD] 680OpenBSD 4.3 2008-05-01 [OBD] 681DragonFly 2.0.0 2008-07-21 [DFB] 682OpenBSD 4.4 2008-11-01 [OBD] 683FreeBSD 6.4 2008-11-28 [FBD] 684FreeBSD 7.1 2009-01-04 [FBD] 685DragonFly 2.2.0 2009-02-17 [DFB] 686NetBSD 5.0 2009-04-29 [NBD] 687OpenBSD 4.5 2009-05-01 [OBD] 688FreeBSD 7.2 2009-05-04 [FBD] 689Mac OS X 10.6 2009-06-08 [APL] 690NetBSD 5.0.1 2009-08-02 [NBD] (security/critical release) 691DragonFly 2.4.0 2009-09-16 [DFB] 692OpenBSD 4.6 2009-10-18 [OBD] 693FreeBSD 8.0 2009-11-26 [FBD] 694NetBSD 5.0.2 2010-02-12 [NBD] (security/critical release) 695FreeBSD 7.3 2010-03-23 [FBD] 696DragonFly 2.6.0 2010-03-28 [DFB] 697OpenBSD 4.7 2010-05-19 [OBD] 698FreeBSD 8.1 2010-07-24 [FBD] 699DragonFly 2.8.2 2010-10-30 [DFB] 700OpenBSD 4.8 2010-11-01 [OBD] 701NetBSD 5.1 2010-11-19 [NBD] 702FreeBSD 7.4 2011-02-24 [FBD] 703FreeBSD 8.2 2011-02-24 [FBD] 704DragonFly 2.10.1 2011-04-26 [DFB] 705OpenBSD 4.9 2011-05-01 [OBD] 706Mac OS X 10.7 2011-07-20 [APL] 707OpenBSD 5.0 2011-11-01 [OBD] 708FreeBSD 9.0 2012-01-12 [FBD] 709NetBSD 5.1.2 2012-02-02 [NBD] (security/critical release) 710DragonFly 3.0.1 2012-02-21 [DFB] 711FreeBSD 8.3 2012-04-18 [FBD] 712OpenBSD 5.1 2012-05-01 [OBD] 713Mac OS X 10.8 2012-07-25 [APL] 714NetBSD 6.0 2012-10-17 [NBD] 715OpenBSD 5.2 2012-11-01 [OBD] 716DragonFly 3.2.1 2012-11-02 [DFB] 717NetBSD 5.2 2012-12-03 [NBD] 718NetBSD 6.0.1 2012-12-26 [NBD] (security/critical release) 719FreeBSD 9.1 2012-12-30 [FBD] 720DragonFly 3.4.1 2013-04-29 [DFB] 721OpenBSD 5.3 2013-05-01 [OBD] 722NetBSD 6.0.2 2013-05-18 [NBD] (security/critical release) 723NetBSD 6.1 2013-05-18 [NBD] 724FreeBSD 8.4 2013-06-07 [FBD] 725NetBSD 6.1.1 2013-08-22 [NBD] 726NetBSD 5.1.3 2013-09-29 [NBD] 727NetBSD 5.2.1 2013-09-29 [NBD] 728FreeBSD 9.2 2013-09-30 [FBD] 729NetBSD 6.0.3 2013-09-30 [NBD] 730NetBSD 6.1.2 2013-09-30 [NBD] 731Mac OS X 10.9 2013-10-22 [APL] 732OpenBSD 5.4 2013-11-01 [OBD] 733DragonFly 3.6.0 2013-11-25 [DFB] 734FreeBSD 10.0 2014-01-20 [FBD] 735NetBSD 5.1.4 2014-01-25 [NBD] 736NetBSD 5.2.2 2014-01-25 [NBD] 737NetBSD 6.0.4 2014-01-25 [NBD] 738NetBSD 6.1.3 2014-01-25 [NBD] 739DragonFly 3.6.1 2014-02-22 [DFB] 740DragonFly 3.6.2 2014-04-10 [DFB] 741NetBSD 6.0.5 2014-04-12 [NBD] 742NetBSD 6.1.4 2014-04-12 [NBD] 743OpenBSD 5.5 2014-05-01 [OBD] 744DragonFly 3.8.0 2014-06-04 [DFB] 745DragonFly 3.8.1 2014-06-16 [DFB] 746DragonFly 3.6.3 2014-06-17 [DFB] 747FreeBSD 9.3 2014-07-05 [FBD] 748DragonFly 3.8.2 2014-08-08 [DFB] 749NetBSD 6.0.6 2014-09-22 [NBD] 750NetBSD 6.1.5 2014-09-22 [NBD] 751Mac OS X 10.10 2014-10-16 [APL] 752OpenBSD 5.6 2014-11-01 [OBD] 753FreeBSD 10.1 2014-11-14 [FBD] 754DragonFly 4.0.1 2014-11-25 [DFB] 755DragonFly 4.0.2 2015-01-07 [DFB] 756DragonFly 4.0.3 2015-01-21 [DFB] 757DragonFly 4.0.4 2015-03-09 [DFB] 758DragonFly 4.0.5 2015-03-23 [DFB] 759OpenBSD 5.7 2015-05-01 [OBD] 760DragonFly 4.2.0 2015-06-29 [DFB] 761FreeBSD 10.2 2015-08-13 [FBD] 762NetBSD 7.0 2015-09-25 [NBD] 763OS X 10.11 2015-09-30 [APL] 764OpenBSD 5.8 2015-10-18 [OBD] 765DragonFly 4.4.1 2015-12-07 [DFB] 766OpenBSD 5.9 2016-03-29 [OBD] 767FreeBSD 10.3 2016-04-04 [FBD] 768NetBSD 7.0.1 2016-05-22 [NBD] 769DragonFly 4.6.0 2016-08-02 [DFB] 770OpenBSD 6.0 2016-09-01 [OBD] 771macOS 10.12 2016-09-20 [APL] 772FreeBSD 11.0 2016-10-10 [FBD] 773NetBSD 7.0.2 2016-10-21 [NBD] 774NetBSD 7.1 2017-03-11 [NBD] 775DragonFly 4.8.0 2017-03-27 [DFB] 776OpenBSD 6.1 2017-04-11 [OBD] 777FreeBSD 11.1 2017-07-26 [FBD] 778macOS 10.13 2017-09-25 [APL] 779FreeBSD 10.4 2017-10-03 [FBD] 780OpenBSD 6.2 2017-10-09 [OBD] 781DragonFly 5.0.0 2017-10-16 [DFB] 782DragonFly 5.0.1 2017-11-06 [DFB] 783DragonFly 5.0.2 2017-12-04 [DFB] 784NetBSD 7.1.1 2017-12-22 [NBD] 785NetBSD 7.1.2 2018-03-15 [NBD] 786OpenBSD 6.3 2018-04-02 [OBD] 787DragonFly 5.2.0 2018-04-10 [DFB] 788DragonFly 5.2.1 2018-05-20 [DFB] 789DragonFly 5.2.2 2018-06-18 [DFB] 790FreeBSD 11.2 2018-06-27 [FBD] 791NetBSD 8.0 2018-07-17 [NBD] 792NetBSD 7.2 2018-08-29 [NBD] 793macOS 10.14 2018-09-24 [APL] 794OpenBSD 6.4 2018-10-18 [OBD] 795DragonFly 5.4.0 2018-12-03 [DFB] 796FreeBSD 12.0 2018-12-11 [FBD] 797DragonFly 5.4.1 2018-12-24 [DFB] 798OpenBSD 6.5 2019-05-01 [OBD] 799NetBSD 8.1 2019-06-04 [NBD] 800DragonFly 5.6 2019-06-17 [DFB] 801DragonFly 5.6.1 2019-06-19 [DFB] 802FreeBSD 11.3 2019-07-09 [FBD] 803DragonFly 5.6.2 2019-08-11 [DFB] 804OpenBSD 6.6 2019-10-17 [OBD] 805macOS 10.15 2019-10-07 [APL] 806macOS 10.15.1 2019-10-29 [APL] (security/critical release) 807FreeBSD 12.1 2019-11-04 [FBD] 808NetBSD 9.0 2020-02-14 [NBD] 809DragonFly 5.8 2020-03-03 [DFB] 810DragonFly 5.6.3 2020-03-11 [DFB] 811NetBSD 8.2 2020-03-31 [NBD] 812 813Bibliography 814------------------------ 815 816Leffler, Samuel J., Marshall Kirk McKusick, Michael J Karels and John 817Quarterman. The Design and Implementation of the 4.3BSD UNIX Operating 818System. Reading, Mass. Addison-Wesley, 1989. ISBN 0-201-06196-1 819 820Salus, Peter H. A quarter century of UNIX. Addison-Wesley Publishing 821Company, Inc., 1994. ISBN 0-201-54777-5 822 823McKusick, Marshall Kirk, Keith Bostic, Michael J Karels, and John 824Quarterman. The Design and Implementation of the 4.4BSD Operating 825System. Reading, Mass. Addison-Wesley, 1996. ISBN 0-201-54979-4 826 827McKusick, Marshall Kirk, George Neville-Neil. The Design and 828Implementation of the FreeBSD Operating System. 829Addison-Wesley Professional, Published: Aug 2, 2004. ISBN 0-201-70245-2 830 831McKusick, Marshall Kirk, George Neville-Neil, Robert Watson. The 832Design and Implementation of the FreeBSD Operating System, 2nd Edition. 833Pearson Education, Inc., 2014. ISBN 0-321-96897-2 834 835Doug McIlroy. Research Unix Reader. 836 837Michael G. Brown. The Role of BSD in the Development of Unix. 838Presented to the Tasmanian Unix Special Interest Group of the 839Australian Computer Society, Hobart, August 1993. 840 841Peter H. Salus. Unix at 25. Byte Magazine, October 1994. 842URL: http://www.byte.com/art/9410/sec8/art3.htm 843 844Andreas Klemm, Lars Köller. If you're going to San Francisco ... 845Die freien BSD-Varianten von Unix. c't April 1997, page 368ff. 846 847BSD Release Announcements collection. 848URL: https://www.FreeBSD.org/releases/ 849 850BSD Hypertext Man Pages 851URL: https://www.FreeBSD.org/cgi/man.cgi 852 853UNIX history graphing project 854URL: http://minnie.tuhs.org/Unix_History/index.html 855 856UNIX history 857URL: http://www.levenez.com/unix/ 858 859James Howard: The BSD Family Tree 860URL: http://ezine.daemonnews.org/200104/bsd_family.html 861("what are the differences between FreeBSD, NetBSD, and OpenBSD?") 862 863 864Acknowledgments 865--------------- 866 867Josh Gilliam for suggestions, bug fixes, and finding very old 868original BSD announcements from Usenet or tapes. 869 870Steven M. Schultz for providing 2.8BSD, 2.10BSD, 2.11BSD manual pages. 871 872-- 873Copyright (c) 1997-2012 Wolfram Schneider <wosch@FreeBSD.ORG> 874URL: https://svnweb.freebsd.org/base/head/share/misc/bsd-family-tree 875 876$FreeBSD: head/share/misc/bsd-family-tree 359561 2020-04-02 11:08:19Z sevan $ 877