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 | | | | | 415FreeBSD 13 -current | NetBSD -current OpenBSD -current DragonFly -current 416 | | | | | 417 v v v v v 418 419Time 420---------------- 421 422Time tolerance +/- 6 months, depending on which book/article you read; if it 423was the announcement in Usenet or if it was available as tape. 424 425[44B] McKusick, Marshall Kirk, Keith Bostic, Michael J Karels, 426 and John Quarterman. The Design and Implementation of 427 the 4.4BSD Operating System. 428[APL] Apple website [https://www.apple.com/macosx/] 429[BSDI] Berkeley Software Design, Inc. 430[DFB] DragonFlyBSD Project, The. 431[DOC] README, COPYRIGHT on tape. 432[FBD] FreeBSD Project, The. 433[KB] Keith Bostic. BSD2.10 available from Usenix. comp.unix.sources, 434 Volume 11, Info 4, April, 1987. 435[KKK] Mike Karels, Kirk McKusick, and Keith Bostic. tahoe announcement. 436 comp.bugs.4bsd.ucb-fixes, June 15, 1988. 437[KSJ] Michael J. Karels, Carl F. Smith, and William F. Jolitz. 438 Changes in the Kernel in 2.9BSD. Second Berkeley Software 439 Distribution UNIX Version 2.9, July, 1983. 440[NBD] NetBSD Project, The. 441[OBD] OpenBSD Project, The. 442[QCU] Salus, Peter H. A quarter century of UNIX. 443[SMS] Steven M. Schultz. 2.11BSD, UNIX for the PDP-11. 444[TUHS] The Unix Historical Society. http://minnie.tuhs.org/Unix_History/. 445[USE] Usenet announcement. 446[WRS] Wind River Systems, Inc. 447[dmr] Dennis Ritchie, via E-Mail 448 449Multics 1965 450UNIX Summer 1969 451 DEC PDP-7 452First Edition 1971-11-03 [QCU] 453 DEC PDP-11/20, Assembler 454Second Edition 1972-06-12 [QCU] 455 10 UNIX installations 456Third Edition 1973-02-xx [QCU] 457 Pipes, 16 installations 458Fourth Edition 1973-11-xx [QCU] 459 rewriting in C effected, 460 above 30 installations 461Fifth Edition 1974-06-xx [QCU] 462 above 50 installations 463Sixth Edition 1975-05-xx [QCU] 464 port to DEC Vax 465Seventh Edition 1979-01-xx [QCU] 1979-01-10 [TUHS] 466 first portable UNIX 467Eighth Edition 1985-02-xx [QCU] 468 VAX 11/750, VAX 11/780 [dmr] 469 descended from 4.1c BSD [dmr] 470 descended from 4.1 BSD [44B] 471 scooping-out and replacement of the character-device 472 and networking part by the streams mechanism 473 474Ninth Edition 1986-09-xx [QCU] 475Tenth Edition 1989-10-xx [QCU] 476 4771BSD late 1977 478 1978-03-09 [QCU] 479 PDP-11, Pascal, ex(1) 480 30 free copies of 1BSD sent out 481 35 tapes sold for 50 USD [QCU] 4822BSD mid 1978 [QCU] 1979-05-10 [TUHS] 483 75 2BSD tapes shipped 4842.79BSD 1980-04-xx [TUHS] 4852.8BSD 1981-07-xx [KSJ] 486 4872.8.1BSD 1982-01-xx [QCU] 488 set of performance improvements 4892.9BSD 1983-07-xx [KSJ] 4902.9.1BSD 1983-11-xx [TUHS] 4912.9BSD-Seismo 1985-08-xx [SMS] 4922.10BSD 1987-04-xx [KKK] 4932.10.1BSD 1989-01-xx [SMS] 4942.11BSD 1992-02-xx [SMS] 4952.11BSD rev #430 1999-12-13 [SMS] 496 49732V 1978-1[01]-xx [QCU] 1979-03-26 [TUHS] 4983BSD late 1979 [QCU] March 1980 [TUHS] 499 virtual memory, page replacement, 500 demand paging 5014.0BSD 1980-10-xx 5024.1BSD 1981-07-08 [DOC] 5034.1aBSD 1982-04-xx 504 alpha release, 100 sites, networking [44B] 5054.1bBSD internal release, fast filesystem [44B] 5064.1cBSD late 1982 507 beta release, IPC [44B] 5084.2BSD 1983-09-xx [QCU] 509 1983-08-03 [DOC] 5104.3BSD 1986-06-xx [QCU] 511 1986-04-05 [KB], [DOC] 5124.3BSD Tahoe 1988-06-15 [QCU], [DOC] 5134.3BSD NET/1 1988-11-xx [QCU] 514 1989-01-01 [DOC] 5154.3BSD Reno 1990-06-29 [QCU], [DOC] 5164.3BSD NET/2 1991-06-28 [QCU], [DOC] 517 518BSD/386 ALPHA 1991-12-xx [BSDI] 519 first code released to people outside BSDI 520386BSD 0.0 1992-02-xx [DOC] 521BSD/386 0.3.1 1992-04-xx [BSDI] first ext. beta; B customers 522BSD/386 0.3.3 1992-06-xx [BSDI] first CDROM version 523386BSD 0.1 1992-07-28 [DOC] 5244.4BSD Alpha 1992-07-07 525BSD/386 0.9.3 1992-10-xx [BSDI] 526 first external gamma; G customers 527BSD/386 0.9.4 1992-12-xx [BSDI] 528 would have been 1.0 except for request 529 for preliminary injunction 530BSD/386 1.0 1993-03-xx [BSDI] 531 injunction denied; first official release 532NetBSD 0.8 1993-04-20 [NBD] 5334.4BSD 1993-06-01 [USE] 534NetBSD 0.9 1993-08-23 [NBD] 535FreeBSD 1.0 1993-11-01 [FBD] 536FreeBSD 1.0.2 1993-11-14 [FBD] 537 supersedes 1.0 13 days after release. 538BSD/386 1.1 1994-02-xx [BSDI] 5394.4BSD Lite 1994-03-01 [USE] 540FreeBSD 1.1 1994-05-07 [FBD] 541FreeBSD 1.1.5 1994-06-30 [FBD] 542FreeBSD 1.1.5.1 1994-07-05 [FBD] 543 supersedes 1.1.5 5 days after release. 544NetBSD 1.0 1994-10-26 [NBD] 545386BSD 1.0 1994-11-12 [USE] 546FreeBSD 2.0 1994-11-23 [FBD] 547BSD/OS 2.0 1995-01-xx [BSDI] 4.4 lite based 548FreeBSD 2.0.5 1995-06-10 [FBD] 549BSD/OS 2.0.1 1995-06-xx [BSDI] 5504.4BSD Lite Release 2 1995-06-xx [44B] 551 the true final distribution from the CSRG 552FreeBSD 2.1.0 1995-11-19 [FBD] 553NetBSD 1.1 1995-11-26 [NBD] 554BSD/OS 2.1 1996-01-xx [BSDI] 555FreeBSD 2.1.5 1996-07-14 [FBD] 556NetBSD 1.2 1996-10-04 [NBD] 557OpenBSD 2.0 1996-10-18 [OBD] 558FreeBSD 2.1.6 1996-11-16 [FBD] 559FreeBSD 2.1.6.1 1996-11-25 [FBD] (sendmail security release) 560Rhapsody 1997-xx-xx 561FreeBSD 2.1.7 1997-02-20 [FBD] 562BSD/OS 3.0 1997-02-xx [BSDI] 4.4 lite2 based 563FreeBSD 2.2.0 1997-03-16 [FBD] 564FreeBSD 2.2.1 1997-03-25 [FBD] 565FreeBSD 2.2.2 1997-05-16 [FBD] 566NetBSD 1.2.1 1997-05-20 [NBD] (patch release) 567OpenBSD 2.1 1997-06-01 [OBD] 568FreeBSD 2.2.5 1997-10-22 [FBD] 569OpenBSD 2.2 1997-12-01 [OBD] 570NetBSD 1.3 1998-01-04 [NBD] 571FreeBSD 2.2.6 1998-03-25 [FBD] 572NetBSD 1.3.1 1998-03-09 [NBD] (patch release) 573BSD/OS 3.1 1998-03-xx [BSDI] 574OpenBSD 2.3 1998-05-19 [OBD] 575NetBSD 1.3.2 1998-05-29 [NBD] (patch release) 576FreeBSD 2.2.7 1998-07-22 [FBD] 577BSD/OS 4.0 1998-08-xx [BSDI] 578 2-lock MP support, ELF executables 579FreeBSD 3.0 1998-10-16 [FBD] 580 FreeBSD-3.0 is a snapshot from -current, 581 while 3.1 and 3.2 are from 3.x-stable which 582 was branched quite some time after 3.0-release 583FreeBSD 2.2.8 1998-11-29 [FBD] 584OpenBSD 2.4 1998-12-01 [OBD] 585NetBSD 1.3.3 1998-12-23 [NBD] (patch release) 586FreeBSD 3.1 1999-02-15 [FBD] 587BSD/OS 4.0.1 1999-03-xx [BSDI] 588NetBSD 1.4 1999-05-12 [NBD] 589FreeBSD 3.2 1999-05-17 [FBD] 590OpenBSD 2.5 1999-05-19 [OBD] 591NetBSD 1.4.1 1999-08-26 [NBD] (patch release) 592FreeBSD 3.3 1999-09-17 [FBD] 593OpenBSD 2.6 1999-12-01 [OBD] 594FreeBSD 3.4 1999-12-20 [FBD] 595BSD/OS 4.1 1999-12-xx [BSDI] 596FreeBSD 4.0 2000-03-13 [FBD] 597NetBSD 1.4.2 2000-03-19 [NBD] (patch release) 598OpenBSD 2.7 2000-06-15 [OBD] 599FreeBSD 3.5 2000-06-24 [FBD] 600FreeBSD 4.1 2000-07-27 [FBD] 601FreeBSD 3.5.1 2000-07-28 [FBD] 602FreeBSD 4.1.1 2000-09-25 [FBD] (a network-only patch release) 603FreeBSD 4.2 2000-11-21 [FBD] 604NetBSD 1.4.3 2000-11-25 [NBD] (patch release) 605BSD/OS 4.2 2000-11-29 [BSDI] 606OpenBSD 2.8 2000-12-01 [OBD] 607NetBSD 1.5 2000-12-06 [NBD] 608Mac OS X 10.0 2001-03-24 [APL] 609FreeBSD 4.3 2001-04-20 [FBD] 610OpenBSD 2.9 2001-06-01 [OBD] 611NetBSD 1.5.1 2001-07-11 [NBD] (patch release) 612NetBSD 1.5.2 2001-09-13 [NBD] (patch release) 613FreeBSD 4.4 2001-09-18 [FBD] 614Mac OS X 10.1 2001-09-29 [APL] 615OpenBSD 3.0 2001-12-01 [OBD] 616FreeBSD 4.5 2002-01-29 [FBD] 617BSD/OS 4.3 2002-03-14 [WRS] 618OpenBSD 3.1 2002-05-19 [OBD] 619FreeBSD 4.6 2002-06-15 [FBD] 620NetBSD 1.5.3 2002-07-22 [NBD] (patch release) 621FreeBSD 4.6.2 2002-08-15 [FBD] (patch release) 622Mac OS X 10.2 2002-08-23 [APL] 623NetBSD 1.6 2002-09-14 [NBD] 624FreeBSD 4.7 2002-10-08 [FBD] 625OpenBSD 3.2 2002-11-01 [OBD] 626FreeBSD 5.0 2003-01-17 [FBD] 627 FreeBSD 5.0 is a separate branch off of 628 -current, similar to 3.0. 629FreeBSD 4.8 2003-04-03 [FBD] 630NetBSD 1.6.1 2003-04-21 [NBD] (patch release) 631OpenBSD 3.3 2003-05-01 [OBD] 632BSD/OS 5.0 2003-05-?? [WRS] 633FreeBSD 5.1 2003-06-09 [FBD] 634Mac OS X 10.3 2003-10-24 [APL] 635FreeBSD 4.9 2003-10-28 [FBD] 636BSD/OS 5.1 ISE 2003-10-?? [WRS] (final version) 637OpenBSD 3.4 2003-11-01 [OBD] 638FreeBSD 5.2 2004-01-12 [FBD] 639FreeBSD 5.2.1 2004-02-22 [FBD] (patch release) 640NetBSD 1.6.2 2004-03-01 [NBD] (patch release) 641OpenBSD 3.5 2004-04-01 [OBD] 642FreeBSD 4.10 2004-05-27 [FBD] 643DragonFly 1.0 2004-07-12 [DFB] 644OpenBSD 3.6 2004-10-29 [OBD] 645FreeBSD 5.3 2004-11-06 [FBD] 646NetBSD 2.0 2004-12-09 [NBD] 647FreeBSD 4.11 2005-01-25 [FBD] 648DragonFly 1.2.0 2005-04-08 [DFB] 649NetBSD 2.0.2 2005-04-14 [NBD] (security/critical release) 650Mac OS X 10.4 2005-04-29 [APL] 651FreeBSD 5.4 2005-05-09 [FBD] 652OpenBSD 3.7 2005-05-19 [OBD] 653NetBSD 2.0.3 2005-10-31 [NBD] (security/critical release) 654OpenBSD 3.8 2005-11-01 [OBD] 655FreeBSD 6.0 2005-11-01 [FBD] 656NetBSD 2.1 2005-11-02 [NBD] 657NetBSD 3.0 2005-12-23 [NBD] 658DragonFly 1.4.0 2006-01-08 [DFB] 659FreeBSD 2.2.9 2006-04-01 [FBD] 660OpenBSD 3.9 2006-05-01 [OBD] 661FreeBSD 6.1 2006-05-08 [FBD] 662FreeBSD 5.5 2006-05-25 [FBD] 663NetBSD 3.0.1 2006-07-24 [NBD] (security/critical release) 664DragonFly 1.6.0 2006-07-24 [DFB] 665OpenBSD 4.0 2006-11-01 [OBD] 666NetBSD 3.0.2 2006-11-04 [NBD] (security/critical release) 667NetBSD 3.1 2006-11-04 [NBD] 668FreeBSD 6.2 2007-01-15 [FBD] 669DragonFly 1.8.0 2007-01-30 [DFB] 670OpenBSD 4.1 2007-05-01 [OBD] 671DragonFly 1.10.0 2007-08-06 [DFB] 672Mac OS X 10.5 2007-10-26 [APL] 673OpenBSD 4.2 2007-11-01 [OBD] 674NetBSD 4.0 2007-12-19 [NBD] 675FreeBSD 6.3 2008-01-18 [FBD] 676DragonFly 1.12.0 2008-02-26 [DFB] 677FreeBSD 7.0 2008-02-27 [FBD] 678OpenBSD 4.3 2008-05-01 [OBD] 679DragonFly 2.0.0 2008-07-21 [DFB] 680OpenBSD 4.4 2008-11-01 [OBD] 681FreeBSD 6.4 2008-11-28 [FBD] 682FreeBSD 7.1 2009-01-04 [FBD] 683DragonFly 2.2.0 2009-02-17 [DFB] 684NetBSD 5.0 2009-04-29 [NBD] 685OpenBSD 4.5 2009-05-01 [OBD] 686FreeBSD 7.2 2009-05-04 [FBD] 687Mac OS X 10.6 2009-06-08 [APL] 688NetBSD 5.0.1 2009-08-02 [NBD] (security/critical release) 689DragonFly 2.4.0 2009-09-16 [DFB] 690OpenBSD 4.6 2009-10-18 [OBD] 691FreeBSD 8.0 2009-11-26 [FBD] 692NetBSD 5.0.2 2010-02-12 [NBD] (security/critical release) 693FreeBSD 7.3 2010-03-23 [FBD] 694DragonFly 2.6.0 2010-03-28 [DFB] 695OpenBSD 4.7 2010-05-19 [OBD] 696FreeBSD 8.1 2010-07-24 [FBD] 697DragonFly 2.8.2 2010-10-30 [DFB] 698OpenBSD 4.8 2010-11-01 [OBD] 699NetBSD 5.1 2010-11-19 [NBD] 700FreeBSD 7.4 2011-02-24 [FBD] 701FreeBSD 8.2 2011-02-24 [FBD] 702DragonFly 2.10.1 2011-04-26 [DFB] 703OpenBSD 4.9 2011-05-01 [OBD] 704Mac OS X 10.7 2011-07-20 [APL] 705OpenBSD 5.0 2011-11-01 [OBD] 706FreeBSD 9.0 2012-01-12 [FBD] 707NetBSD 5.1.2 2012-02-02 [NBD] (security/critical release) 708DragonFly 3.0.1 2012-02-21 [DFB] 709FreeBSD 8.3 2012-04-18 [FBD] 710OpenBSD 5.1 2012-05-01 [OBD] 711Mac OS X 10.8 2012-07-25 [APL] 712NetBSD 6.0 2012-10-17 [NBD] 713OpenBSD 5.2 2012-11-01 [OBD] 714DragonFly 3.2.1 2012-11-02 [DFB] 715NetBSD 5.2 2012-12-03 [NBD] 716NetBSD 6.0.1 2012-12-26 [NBD] (security/critical release) 717FreeBSD 9.1 2012-12-30 [FBD] 718DragonFly 3.4.1 2013-04-29 [DFB] 719OpenBSD 5.3 2013-05-01 [OBD] 720NetBSD 6.0.2 2013-05-18 [NBD] (security/critical release) 721NetBSD 6.1 2013-05-18 [NBD] 722FreeBSD 8.4 2013-06-07 [FBD] 723NetBSD 6.1.1 2013-08-22 [NBD] 724NetBSD 5.1.3 2013-09-29 [NBD] 725NetBSD 5.2.1 2013-09-29 [NBD] 726FreeBSD 9.2 2013-09-30 [FBD] 727NetBSD 6.0.3 2013-09-30 [NBD] 728NetBSD 6.1.2 2013-09-30 [NBD] 729Mac OS X 10.9 2013-10-22 [APL] 730OpenBSD 5.4 2013-11-01 [OBD] 731DragonFly 3.6.0 2013-11-25 [DFB] 732FreeBSD 10.0 2014-01-20 [FBD] 733NetBSD 5.1.4 2014-01-25 [NBD] 734NetBSD 5.2.2 2014-01-25 [NBD] 735NetBSD 6.0.4 2014-01-25 [NBD] 736NetBSD 6.1.3 2014-01-25 [NBD] 737DragonFly 3.6.1 2014-02-22 [DFB] 738DragonFly 3.6.2 2014-04-10 [DFB] 739NetBSD 6.0.5 2014-04-12 [NBD] 740NetBSD 6.1.4 2014-04-12 [NBD] 741OpenBSD 5.5 2014-05-01 [OBD] 742DragonFly 3.8.0 2014-06-04 [DFB] 743DragonFly 3.8.1 2014-06-16 [DFB] 744DragonFly 3.6.3 2014-06-17 [DFB] 745FreeBSD 9.3 2014-07-05 [FBD] 746DragonFly 3.8.2 2014-08-08 [DFB] 747NetBSD 6.0.6 2014-09-22 [NBD] 748NetBSD 6.1.5 2014-09-22 [NBD] 749Mac OS X 10.10 2014-10-16 [APL] 750OpenBSD 5.6 2014-11-01 [OBD] 751FreeBSD 10.1 2014-11-14 [FBD] 752DragonFly 4.0.1 2014-11-25 [DFB] 753DragonFly 4.0.2 2015-01-07 [DFB] 754DragonFly 4.0.3 2015-01-21 [DFB] 755DragonFly 4.0.4 2015-03-09 [DFB] 756DragonFly 4.0.5 2015-03-23 [DFB] 757OpenBSD 5.7 2015-05-01 [OBD] 758DragonFly 4.2.0 2015-06-29 [DFB] 759FreeBSD 10.2 2015-08-13 [FBD] 760NetBSD 7.0 2015-09-25 [NBD] 761OS X 10.11 2015-09-30 [APL] 762OpenBSD 5.8 2015-10-18 [OBD] 763DragonFly 4.4.1 2015-12-07 [DFB] 764OpenBSD 5.9 2016-03-29 [OBD] 765FreeBSD 10.3 2016-04-04 [FBD] 766NetBSD 7.0.1 2016-05-22 [NBD] 767DragonFly 4.6.0 2016-08-02 [DFB] 768OpenBSD 6.0 2016-09-01 [OBD] 769macOS 10.12 2016-09-20 [APL] 770FreeBSD 11.0 2016-10-10 [FBD] 771NetBSD 7.0.2 2016-10-21 [NBD] 772NetBSD 7.1 2017-03-11 [NBD] 773DragonFly 4.8.0 2017-03-27 [DFB] 774OpenBSD 6.1 2017-04-11 [OBD] 775FreeBSD 11.1 2017-07-26 [FBD] 776macOS 10.13 2017-09-25 [APL] 777FreeBSD 10.4 2017-10-03 [FBD] 778OpenBSD 6.2 2017-10-09 [OBD] 779DragonFly 5.0.0 2017-10-16 [DFB] 780DragonFly 5.0.1 2017-11-06 [DFB] 781DragonFly 5.0.2 2017-12-04 [DFB] 782NetBSD 7.1.1 2017-12-22 [NBD] 783NetBSD 7.1.2 2018-03-15 [NBD] 784OpenBSD 6.3 2018-04-02 [OBD] 785DragonFly 5.2.0 2018-04-10 [DFB] 786DragonFly 5.2.1 2018-05-20 [DFB] 787DragonFly 5.2.2 2018-06-18 [DFB] 788FreeBSD 11.2 2018-06-27 [FBD] 789NetBSD 8.0 2018-07-17 [NBD] 790NetBSD 7.2 2018-08-29 [NBD] 791macOS 10.14 2018-09-24 [APL] 792OpenBSD 6.4 2018-10-18 [OBD] 793DragonFly 5.4.0 2018-12-03 [DFB] 794FreeBSD 12.0 2018-12-11 [FBD] 795DragonFly 5.4.1 2018-12-24 [DFB] 796OpenBSD 6.5 2019-05-01 [OBD] 797NetBSD 8.1 2019-06-04 [NBD] 798DragonFly 5.6 2019-06-17 [DFB] 799DragonFly 5.6.1 2019-06-19 [DFB] 800FreeBSD 11.3 2019-07-09 [FBD] 801DragonFly 5.6.2 2019-08-11 [DFB] 802OpenBSD 6.6 2019-10-17 [OBD] 803macOS 10.15 2019-10-07 [APL] 804macOS 10.15.1 2019-10-29 [APL] (security/critical release) 805FreeBSD 12.1 2019-11-04 [FBD] 806NetBSD 9.0 2020-02-14 [NBD] 807DragonFly 5.8 2020-03-03 [DFB] 808DragonFly 5.6.3 2020-03-11 [DFB] 809 810Bibliography 811------------------------ 812 813Leffler, Samuel J., Marshall Kirk McKusick, Michael J Karels and John 814Quarterman. The Design and Implementation of the 4.3BSD UNIX Operating 815System. Reading, Mass. Addison-Wesley, 1989. ISBN 0-201-06196-1 816 817Salus, Peter H. A quarter century of UNIX. Addison-Wesley Publishing 818Company, Inc., 1994. ISBN 0-201-54777-5 819 820McKusick, Marshall Kirk, Keith Bostic, Michael J Karels, and John 821Quarterman. The Design and Implementation of the 4.4BSD Operating 822System. Reading, Mass. Addison-Wesley, 1996. ISBN 0-201-54979-4 823 824McKusick, Marshall Kirk, George Neville-Neil. The Design and 825Implementation of the FreeBSD Operating System. 826Addison-Wesley Professional, Published: Aug 2, 2004. ISBN 0-201-70245-2 827 828McKusick, Marshall Kirk, George Neville-Neil, Robert Watson. The 829Design and Implementation of the FreeBSD Operating System, 2nd Edition. 830Pearson Education, Inc., 2014. ISBN 0-321-96897-2 831 832Doug McIlroy. Research Unix Reader. 833 834Michael G. Brown. The Role of BSD in the Development of Unix. 835Presented to the Tasmanian Unix Special Interest Group of the 836Australian Computer Society, Hobart, August 1993. 837 838Peter H. Salus. Unix at 25. Byte Magazine, October 1994. 839URL: http://www.byte.com/art/9410/sec8/art3.htm 840 841Andreas Klemm, Lars Köller. If you're going to San Francisco ... 842Die freien BSD-Varianten von Unix. c't April 1997, page 368ff. 843 844BSD Release Announcements collection. 845URL: https://www.FreeBSD.org/releases/ 846 847BSD Hypertext Man Pages 848URL: https://www.FreeBSD.org/cgi/man.cgi 849 850UNIX history graphing project 851URL: http://minnie.tuhs.org/Unix_History/index.html 852 853UNIX history 854URL: http://www.levenez.com/unix/ 855 856James Howard: The BSD Family Tree 857URL: http://ezine.daemonnews.org/200104/bsd_family.html 858("what are the differences between FreeBSD, NetBSD, and OpenBSD?") 859 860 861Acknowledgments 862--------------- 863 864Josh Gilliam for suggestions, bug fixes, and finding very old 865original BSD announcements from Usenet or tapes. 866 867Steven M. Schultz for providing 2.8BSD, 2.10BSD, 2.11BSD manual pages. 868 869-- 870Copyright (c) 1997-2012 Wolfram Schneider <wosch@FreeBSD.ORG> 871URL: https://svnweb.freebsd.org/base/head/share/misc/bsd-family-tree 872 873$FreeBSD$ 874