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 | | | | | 9.0 | | | 410 | | | | | | | | | 411 | | | | | | | | DragonFly 5.8 412 | | | | | | | | | 413 | | | | | | | | DragonFly 5.6.3 414 | | | | | | NetBSD | | 415 | | | | | | 8.2 | | 416 | | | | | | | DragonFly 5.8.1 417 | | | | | | OpenBSD 6.7 | 418 | | FreeBSD | | | | | 419 | | 11.4 | | | | | 420 | | | | | | DragonFly 5.8.2 421 | | | | | | DragonFly 5.8.3 422 | | | | NetBSD 9.1 OpenBSD 6.8 | 423 | FreeBSD | | | | | 424 | 12.2 | | | | | 425 | | | | | | 426 *--FreeBSD | | | | | 427 | 13.0 | | NetBSD 9.2 OpenBSD 6.9 | 428 | | | | | 429FreeBSD 14 -current | NetBSD -current OpenBSD -current DragonFly -current 430 | | | | | 431 v v v v v 432 433Time 434---------------- 435 436Time tolerance +/- 6 months, depending on which book/article you read; if it 437was the announcement in Usenet or if it was available as tape. 438 439[44B] McKusick, Marshall Kirk, Keith Bostic, Michael J Karels, 440 and John Quarterman. The Design and Implementation of 441 the 4.4BSD Operating System. 442[APL] Apple website [https://www.apple.com/macosx/] 443[BSDI] Berkeley Software Design, Inc. 444[DFB] DragonFlyBSD Project, The. 445[DOC] README, COPYRIGHT on tape. 446[FBD] FreeBSD Project, The. 447[KB] Keith Bostic. BSD2.10 available from Usenix. comp.unix.sources, 448 Volume 11, Info 4, April, 1987. 449[KKK] Mike Karels, Kirk McKusick, and Keith Bostic. tahoe announcement. 450 comp.bugs.4bsd.ucb-fixes, June 15, 1988. 451[KSJ] Michael J. Karels, Carl F. Smith, and William F. Jolitz. 452 Changes in the Kernel in 2.9BSD. Second Berkeley Software 453 Distribution UNIX Version 2.9, July, 1983. 454[NBD] NetBSD Project, The. 455[OBD] OpenBSD Project, The. 456[QCU] Salus, Peter H. A quarter century of UNIX. 457[SMS] Steven M. Schultz. 2.11BSD, UNIX for the PDP-11. 458[TUHS] The Unix Historical Society. http://minnie.tuhs.org/Unix_History/. 459[USE] Usenet announcement. 460[WRS] Wind River Systems, Inc. 461[dmr] Dennis Ritchie, via E-Mail 462 463Multics 1965 464UNIX Summer 1969 465 DEC PDP-7 466First Edition 1971-11-03 [QCU] 467 DEC PDP-11/20, Assembler 468Second Edition 1972-06-12 [QCU] 469 10 UNIX installations 470Third Edition 1973-02-xx [QCU] 471 Pipes, 16 installations 472Fourth Edition 1973-11-xx [QCU] 473 rewriting in C effected, 474 above 30 installations 475Fifth Edition 1974-06-xx [QCU] 476 above 50 installations 477Sixth Edition 1975-05-xx [QCU] 478 port to DEC Vax 479Seventh Edition 1979-01-xx [QCU] 1979-01-10 [TUHS] 480 first portable UNIX 481Eighth Edition 1985-02-xx [QCU] 482 VAX 11/750, VAX 11/780 [dmr] 483 descended from 4.1c BSD [dmr] 484 descended from 4.1 BSD [44B] 485 scooping-out and replacement of the character-device 486 and networking part by the streams mechanism 487 488Ninth Edition 1986-09-xx [QCU] 489Tenth Edition 1989-10-xx [QCU] 490 4911BSD late 1977 492 1978-01-16 [DOC] 493 1978-03-09 [QCU] 494 PDP-11, Pascal, ex(1) 495 30 free copies of 1BSD sent out 496 35 tapes sold for 50 USD [QCU] 4972BSD mid 1978 [QCU] 1979-05-10 [TUHS] 498 75 2BSD tapes shipped 4992.79BSD 1980-04-xx [TUHS] 5002.8BSD 1981-07-xx [KSJ] 501 5022.8.1BSD 1982-01-xx [QCU] 503 set of performance improvements 5042.9BSD 1983-07-xx [KSJ] 5052.9.1BSD 1983-11-xx [TUHS] 5062.9BSD-Seismo 1985-08-xx [SMS] 5072.10BSD 1987-04-xx [KKK] 5082.10.1BSD 1989-01-xx [SMS] 5092.11BSD 1991-03-14 [SMS] 5102.11BSD rev #430 1999-12-13 [SMS] 511 51232V 1978-1[01]-xx [QCU] 1979-03-26 [TUHS] 5133BSD late 1979 [QCU] March 1980 [TUHS] 514 virtual memory, page replacement, 515 demand paging 5164.0BSD 1980-10-xx 5174.1BSD 1981-07-08 [DOC] 5184.1aBSD 1982-04-xx 519 alpha release, 100 sites, networking [44B] 5204.1bBSD internal release, fast filesystem [44B] 5214.1cBSD late 1982 522 beta release, IPC [44B] 5234.2BSD 1983-09-xx [QCU] 524 1983-08-03 [DOC] 5254.3BSD 1986-06-xx [QCU] 526 1986-04-05 [KB], [DOC] 5274.3BSD Tahoe 1988-06-15 [QCU], [DOC] 5284.3BSD NET/1 1988-11-xx [QCU] 529 1989-01-01 [DOC] 5304.3BSD Reno 1990-06-29 [QCU], [DOC] 5314.3BSD NET/2 1991-06-28 [QCU], [DOC] 532 533BSD/386 ALPHA 1991-12-xx [BSDI] 534 first code released to people outside BSDI 535386BSD 0.0 1992-02-xx [DOC] 536BSD/386 0.3.1 1992-04-xx [BSDI] first ext. beta; B customers 537BSD/386 0.3.3 1992-06-xx [BSDI] first CDROM version 538386BSD 0.1 1992-07-28 [DOC] 5394.4BSD Alpha 1992-07-07 540BSD/386 0.9.3 1992-10-xx [BSDI] 541 first external gamma; G customers 542BSD/386 0.9.4 1992-12-xx [BSDI] 543 would have been 1.0 except for request 544 for preliminary injunction 545BSD/386 1.0 1993-03-xx [BSDI] 546 injunction denied; first official release 547NetBSD 0.8 1993-04-20 [NBD] 5484.4BSD 1993-06-01 [USE] 549NetBSD 0.9 1993-08-23 [NBD] 550FreeBSD 1.0 1993-11-01 [FBD] 551FreeBSD 1.0.2 1993-11-14 [FBD] 552 supersedes 1.0 13 days after release. 553BSD/386 1.1 1994-02-xx [BSDI] 5544.4BSD Lite 1994-03-01 [USE] 555FreeBSD 1.1 1994-05-07 [FBD] 556FreeBSD 1.1.5 1994-06-30 [FBD] 557FreeBSD 1.1.5.1 1994-07-05 [FBD] 558 supersedes 1.1.5 5 days after release. 559NetBSD 1.0 1994-10-26 [NBD] 560386BSD 1.0 1994-11-12 [USE] 561FreeBSD 2.0 1994-11-23 [FBD] 562BSD/OS 2.0 1995-01-xx [BSDI] 4.4 lite based 563FreeBSD 2.0.5 1995-06-10 [FBD] 564BSD/OS 2.0.1 1995-06-xx [BSDI] 5654.4BSD Lite Release 2 1995-06-xx [44B] 566 the true final distribution from the CSRG 567FreeBSD 2.1.0 1995-11-19 [FBD] 568NetBSD 1.1 1995-11-26 [NBD] 569BSD/OS 2.1 1996-01-xx [BSDI] 570FreeBSD 2.1.5 1996-07-14 [FBD] 571NetBSD 1.2 1996-10-04 [NBD] 572OpenBSD 2.0 1996-10-18 [OBD] 573FreeBSD 2.1.6 1996-11-16 [FBD] 574FreeBSD 2.1.6.1 1996-11-25 [FBD] (sendmail security release) 575Rhapsody 1997-xx-xx 576FreeBSD 2.1.7 1997-02-20 [FBD] 577BSD/OS 3.0 1997-02-xx [BSDI] 4.4 lite2 based 578FreeBSD 2.2.0 1997-03-16 [FBD] 579FreeBSD 2.2.1 1997-03-25 [FBD] 580FreeBSD 2.2.2 1997-05-16 [FBD] 581NetBSD 1.2.1 1997-05-20 [NBD] (patch release) 582OpenBSD 2.1 1997-06-01 [OBD] 583FreeBSD 2.2.5 1997-10-22 [FBD] 584OpenBSD 2.2 1997-12-01 [OBD] 585NetBSD 1.3 1998-01-04 [NBD] 586FreeBSD 2.2.6 1998-03-25 [FBD] 587NetBSD 1.3.1 1998-03-09 [NBD] (patch release) 588BSD/OS 3.1 1998-03-xx [BSDI] 589OpenBSD 2.3 1998-05-19 [OBD] 590NetBSD 1.3.2 1998-05-29 [NBD] (patch release) 591FreeBSD 2.2.7 1998-07-22 [FBD] 592BSD/OS 4.0 1998-08-xx [BSDI] 593 2-lock MP support, ELF executables 594FreeBSD 3.0 1998-10-16 [FBD] 595 FreeBSD-3.0 is a snapshot from -current, 596 while 3.1 and 3.2 are from 3.x-stable which 597 was branched quite some time after 3.0-release 598FreeBSD 2.2.8 1998-11-29 [FBD] 599OpenBSD 2.4 1998-12-01 [OBD] 600NetBSD 1.3.3 1998-12-23 [NBD] (patch release) 601FreeBSD 3.1 1999-02-15 [FBD] 602BSD/OS 4.0.1 1999-03-xx [BSDI] 603NetBSD 1.4 1999-05-12 [NBD] 604FreeBSD 3.2 1999-05-17 [FBD] 605OpenBSD 2.5 1999-05-19 [OBD] 606NetBSD 1.4.1 1999-08-26 [NBD] (patch release) 607FreeBSD 3.3 1999-09-17 [FBD] 608OpenBSD 2.6 1999-12-01 [OBD] 609FreeBSD 3.4 1999-12-20 [FBD] 610BSD/OS 4.1 1999-12-xx [BSDI] 611FreeBSD 4.0 2000-03-13 [FBD] 612NetBSD 1.4.2 2000-03-19 [NBD] (patch release) 613OpenBSD 2.7 2000-06-15 [OBD] 614FreeBSD 3.5 2000-06-24 [FBD] 615FreeBSD 4.1 2000-07-27 [FBD] 616FreeBSD 3.5.1 2000-07-28 [FBD] 617FreeBSD 4.1.1 2000-09-25 [FBD] (a network-only patch release) 618FreeBSD 4.2 2000-11-21 [FBD] 619NetBSD 1.4.3 2000-11-25 [NBD] (patch release) 620BSD/OS 4.2 2000-11-29 [BSDI] 621OpenBSD 2.8 2000-12-01 [OBD] 622NetBSD 1.5 2000-12-06 [NBD] 623Mac OS X 10.0 2001-03-24 [APL] 624FreeBSD 4.3 2001-04-20 [FBD] 625OpenBSD 2.9 2001-06-01 [OBD] 626NetBSD 1.5.1 2001-07-11 [NBD] (patch release) 627NetBSD 1.5.2 2001-09-13 [NBD] (patch release) 628FreeBSD 4.4 2001-09-18 [FBD] 629Mac OS X 10.1 2001-09-29 [APL] 630OpenBSD 3.0 2001-12-01 [OBD] 631FreeBSD 4.5 2002-01-29 [FBD] 632BSD/OS 4.3 2002-03-14 [WRS] 633OpenBSD 3.1 2002-05-19 [OBD] 634FreeBSD 4.6 2002-06-15 [FBD] 635NetBSD 1.5.3 2002-07-22 [NBD] (patch release) 636FreeBSD 4.6.2 2002-08-15 [FBD] (patch release) 637Mac OS X 10.2 2002-08-23 [APL] 638NetBSD 1.6 2002-09-14 [NBD] 639FreeBSD 4.7 2002-10-08 [FBD] 640OpenBSD 3.2 2002-11-01 [OBD] 641FreeBSD 5.0 2003-01-17 [FBD] 642 FreeBSD 5.0 is a separate branch off of 643 -current, similar to 3.0. 644FreeBSD 4.8 2003-04-03 [FBD] 645NetBSD 1.6.1 2003-04-21 [NBD] (patch release) 646OpenBSD 3.3 2003-05-01 [OBD] 647BSD/OS 5.0 2003-05-?? [WRS] 648FreeBSD 5.1 2003-06-09 [FBD] 649Mac OS X 10.3 2003-10-24 [APL] 650FreeBSD 4.9 2003-10-28 [FBD] 651BSD/OS 5.1 ISE 2003-10-?? [WRS] (final version) 652OpenBSD 3.4 2003-11-01 [OBD] 653FreeBSD 5.2 2004-01-12 [FBD] 654FreeBSD 5.2.1 2004-02-22 [FBD] (patch release) 655NetBSD 1.6.2 2004-03-01 [NBD] (patch release) 656OpenBSD 3.5 2004-04-01 [OBD] 657FreeBSD 4.10 2004-05-27 [FBD] 658DragonFly 1.0 2004-07-12 [DFB] 659OpenBSD 3.6 2004-10-29 [OBD] 660FreeBSD 5.3 2004-11-06 [FBD] 661NetBSD 2.0 2004-12-09 [NBD] 662FreeBSD 4.11 2005-01-25 [FBD] 663DragonFly 1.2.0 2005-04-08 [DFB] 664NetBSD 2.0.2 2005-04-14 [NBD] (security/critical release) 665Mac OS X 10.4 2005-04-29 [APL] 666FreeBSD 5.4 2005-05-09 [FBD] 667OpenBSD 3.7 2005-05-19 [OBD] 668NetBSD 2.0.3 2005-10-31 [NBD] (security/critical release) 669OpenBSD 3.8 2005-11-01 [OBD] 670FreeBSD 6.0 2005-11-01 [FBD] 671NetBSD 2.1 2005-11-02 [NBD] 672NetBSD 3.0 2005-12-23 [NBD] 673DragonFly 1.4.0 2006-01-08 [DFB] 674FreeBSD 2.2.9 2006-04-01 [FBD] 675OpenBSD 3.9 2006-05-01 [OBD] 676FreeBSD 6.1 2006-05-08 [FBD] 677FreeBSD 5.5 2006-05-25 [FBD] 678NetBSD 3.0.1 2006-07-24 [NBD] (security/critical release) 679DragonFly 1.6.0 2006-07-24 [DFB] 680OpenBSD 4.0 2006-11-01 [OBD] 681NetBSD 3.0.2 2006-11-04 [NBD] (security/critical release) 682NetBSD 3.1 2006-11-04 [NBD] 683FreeBSD 6.2 2007-01-15 [FBD] 684DragonFly 1.8.0 2007-01-30 [DFB] 685OpenBSD 4.1 2007-05-01 [OBD] 686DragonFly 1.10.0 2007-08-06 [DFB] 687Mac OS X 10.5 2007-10-26 [APL] 688OpenBSD 4.2 2007-11-01 [OBD] 689NetBSD 4.0 2007-12-19 [NBD] 690FreeBSD 6.3 2008-01-18 [FBD] 691DragonFly 1.12.0 2008-02-26 [DFB] 692FreeBSD 7.0 2008-02-27 [FBD] 693OpenBSD 4.3 2008-05-01 [OBD] 694DragonFly 2.0.0 2008-07-21 [DFB] 695OpenBSD 4.4 2008-11-01 [OBD] 696FreeBSD 6.4 2008-11-28 [FBD] 697FreeBSD 7.1 2009-01-04 [FBD] 698DragonFly 2.2.0 2009-02-17 [DFB] 699NetBSD 5.0 2009-04-29 [NBD] 700OpenBSD 4.5 2009-05-01 [OBD] 701FreeBSD 7.2 2009-05-04 [FBD] 702Mac OS X 10.6 2009-06-08 [APL] 703NetBSD 5.0.1 2009-08-02 [NBD] (security/critical release) 704DragonFly 2.4.0 2009-09-16 [DFB] 705OpenBSD 4.6 2009-10-18 [OBD] 706FreeBSD 8.0 2009-11-26 [FBD] 707NetBSD 5.0.2 2010-02-12 [NBD] (security/critical release) 708FreeBSD 7.3 2010-03-23 [FBD] 709DragonFly 2.6.0 2010-03-28 [DFB] 710OpenBSD 4.7 2010-05-19 [OBD] 711FreeBSD 8.1 2010-07-24 [FBD] 712DragonFly 2.8.2 2010-10-30 [DFB] 713OpenBSD 4.8 2010-11-01 [OBD] 714NetBSD 5.1 2010-11-19 [NBD] 715FreeBSD 7.4 2011-02-24 [FBD] 716FreeBSD 8.2 2011-02-24 [FBD] 717DragonFly 2.10.1 2011-04-26 [DFB] 718OpenBSD 4.9 2011-05-01 [OBD] 719Mac OS X 10.7 2011-07-20 [APL] 720OpenBSD 5.0 2011-11-01 [OBD] 721FreeBSD 9.0 2012-01-12 [FBD] 722NetBSD 5.1.2 2012-02-02 [NBD] (security/critical release) 723DragonFly 3.0.1 2012-02-21 [DFB] 724FreeBSD 8.3 2012-04-18 [FBD] 725OpenBSD 5.1 2012-05-01 [OBD] 726Mac OS X 10.8 2012-07-25 [APL] 727NetBSD 6.0 2012-10-17 [NBD] 728OpenBSD 5.2 2012-11-01 [OBD] 729DragonFly 3.2.1 2012-11-02 [DFB] 730NetBSD 5.2 2012-12-03 [NBD] 731NetBSD 6.0.1 2012-12-26 [NBD] (security/critical release) 732FreeBSD 9.1 2012-12-30 [FBD] 733DragonFly 3.4.1 2013-04-29 [DFB] 734OpenBSD 5.3 2013-05-01 [OBD] 735NetBSD 6.0.2 2013-05-18 [NBD] (security/critical release) 736NetBSD 6.1 2013-05-18 [NBD] 737FreeBSD 8.4 2013-06-07 [FBD] 738NetBSD 6.1.1 2013-08-22 [NBD] 739NetBSD 5.1.3 2013-09-29 [NBD] 740NetBSD 5.2.1 2013-09-29 [NBD] 741FreeBSD 9.2 2013-09-30 [FBD] 742NetBSD 6.0.3 2013-09-30 [NBD] 743NetBSD 6.1.2 2013-09-30 [NBD] 744Mac OS X 10.9 2013-10-22 [APL] 745OpenBSD 5.4 2013-11-01 [OBD] 746DragonFly 3.6.0 2013-11-25 [DFB] 747FreeBSD 10.0 2014-01-20 [FBD] 748NetBSD 5.1.4 2014-01-25 [NBD] 749NetBSD 5.2.2 2014-01-25 [NBD] 750NetBSD 6.0.4 2014-01-25 [NBD] 751NetBSD 6.1.3 2014-01-25 [NBD] 752DragonFly 3.6.1 2014-02-22 [DFB] 753DragonFly 3.6.2 2014-04-10 [DFB] 754NetBSD 6.0.5 2014-04-12 [NBD] 755NetBSD 6.1.4 2014-04-12 [NBD] 756OpenBSD 5.5 2014-05-01 [OBD] 757DragonFly 3.8.0 2014-06-04 [DFB] 758DragonFly 3.8.1 2014-06-16 [DFB] 759DragonFly 3.6.3 2014-06-17 [DFB] 760FreeBSD 9.3 2014-07-05 [FBD] 761DragonFly 3.8.2 2014-08-08 [DFB] 762NetBSD 6.0.6 2014-09-22 [NBD] 763NetBSD 6.1.5 2014-09-22 [NBD] 764Mac OS X 10.10 2014-10-16 [APL] 765OpenBSD 5.6 2014-11-01 [OBD] 766FreeBSD 10.1 2014-11-14 [FBD] 767DragonFly 4.0.1 2014-11-25 [DFB] 768DragonFly 4.0.2 2015-01-07 [DFB] 769DragonFly 4.0.3 2015-01-21 [DFB] 770DragonFly 4.0.4 2015-03-09 [DFB] 771DragonFly 4.0.5 2015-03-23 [DFB] 772OpenBSD 5.7 2015-05-01 [OBD] 773DragonFly 4.2.0 2015-06-29 [DFB] 774FreeBSD 10.2 2015-08-13 [FBD] 775NetBSD 7.0 2015-09-25 [NBD] 776OS X 10.11 2015-09-30 [APL] 777OpenBSD 5.8 2015-10-18 [OBD] 778DragonFly 4.4.1 2015-12-07 [DFB] 779OpenBSD 5.9 2016-03-29 [OBD] 780FreeBSD 10.3 2016-04-04 [FBD] 781NetBSD 7.0.1 2016-05-22 [NBD] 782DragonFly 4.6.0 2016-08-02 [DFB] 783OpenBSD 6.0 2016-09-01 [OBD] 784macOS 10.12 2016-09-20 [APL] 785FreeBSD 11.0 2016-10-10 [FBD] 786NetBSD 7.0.2 2016-10-21 [NBD] 787NetBSD 7.1 2017-03-11 [NBD] 788DragonFly 4.8.0 2017-03-27 [DFB] 789OpenBSD 6.1 2017-04-11 [OBD] 790FreeBSD 11.1 2017-07-26 [FBD] 791macOS 10.13 2017-09-25 [APL] 792FreeBSD 10.4 2017-10-03 [FBD] 793OpenBSD 6.2 2017-10-09 [OBD] 794DragonFly 5.0.0 2017-10-16 [DFB] 795DragonFly 5.0.1 2017-11-06 [DFB] 796DragonFly 5.0.2 2017-12-04 [DFB] 797NetBSD 7.1.1 2017-12-22 [NBD] 798NetBSD 7.1.2 2018-03-15 [NBD] 799OpenBSD 6.3 2018-04-02 [OBD] 800DragonFly 5.2.0 2018-04-10 [DFB] 801DragonFly 5.2.1 2018-05-20 [DFB] 802DragonFly 5.2.2 2018-06-18 [DFB] 803FreeBSD 11.2 2018-06-27 [FBD] 804NetBSD 8.0 2018-07-17 [NBD] 805NetBSD 7.2 2018-08-29 [NBD] 806macOS 10.14 2018-09-24 [APL] 807OpenBSD 6.4 2018-10-18 [OBD] 808DragonFly 5.4.0 2018-12-03 [DFB] 809FreeBSD 12.0 2018-12-11 [FBD] 810DragonFly 5.4.1 2018-12-24 [DFB] 811OpenBSD 6.5 2019-05-01 [OBD] 812NetBSD 8.1 2019-06-04 [NBD] 813DragonFly 5.6 2019-06-17 [DFB] 814DragonFly 5.6.1 2019-06-19 [DFB] 815FreeBSD 11.3 2019-07-09 [FBD] 816DragonFly 5.6.2 2019-08-11 [DFB] 817OpenBSD 6.6 2019-10-17 [OBD] 818macOS 10.15 2019-10-07 [APL] 819macOS 10.15.1 2019-10-29 [APL] (security/critical release) 820FreeBSD 12.1 2019-11-04 [FBD] 821NetBSD 9.0 2020-02-14 [NBD] 822DragonFly 5.8 2020-03-03 [DFB] 823DragonFly 5.6.3 2020-03-11 [DFB] 824NetBSD 8.2 2020-03-31 [NBD] 825DragonFly 5.8.1 2020-05-06 [DFB] 826OpenBSD 6.7 2020-05-19 [OBD] 827FreeBSD 11.4 2020-06-16 [FBD] 828DragonFly 5.8.2 2020-09-23 [DFB] 829DragonFly 5.8.3 2020-09-24 [DFB] 830OpenBSD 6.8 2020-10-18 [OBD] 831NetBSD 9.1 2020-10-18 [NBD] 832FreeBSD 12.2 2020-10-27 [FBD] 833FreeBSD 13.0 2021-04-13 [FBD] 834OpenBSD 6.9 2021-05-01 [OBD] 835NetBSD 9.2 2021-05-12 [NBD] 836 837Bibliography 838------------------------ 839 840Leffler, Samuel J., Marshall Kirk McKusick, Michael J Karels and John 841Quarterman. The Design and Implementation of the 4.3BSD UNIX Operating 842System. Reading, Mass. Addison-Wesley, 1989. ISBN 0-201-06196-1 843 844Salus, Peter H. A quarter century of UNIX. Addison-Wesley Publishing 845Company, Inc., 1994. ISBN 0-201-54777-5 846 847McKusick, Marshall Kirk, Keith Bostic, Michael J Karels, and John 848Quarterman. The Design and Implementation of the 4.4BSD Operating 849System. Reading, Mass. Addison-Wesley, 1996. ISBN 0-201-54979-4 850 851McKusick, Marshall Kirk, George Neville-Neil. The Design and 852Implementation of the FreeBSD Operating System. 853Addison-Wesley Professional, Published: Aug 2, 2004. ISBN 0-201-70245-2 854 855McKusick, Marshall Kirk, George Neville-Neil, Robert Watson. The 856Design and Implementation of the FreeBSD Operating System, 2nd Edition. 857Pearson Education, Inc., 2014. ISBN 0-321-96897-2 858 859Doug McIlroy. Research Unix Reader. 860 861Michael G. Brown. The Role of BSD in the Development of Unix. 862Presented to the Tasmanian Unix Special Interest Group of the 863Australian Computer Society, Hobart, August 1993. 864 865Peter H. Salus. Unix at 25. Byte Magazine, October 1994. 866URL: http://www.byte.com/art/9410/sec8/art3.htm 867 868Andreas Klemm, Lars Köller. If you're going to San Francisco ... 869Die freien BSD-Varianten von Unix. c't April 1997, page 368ff. 870 871BSD Release Announcements collection. 872URL: https://www.FreeBSD.org/releases/ 873 874BSD Hypertext Man Pages 875URL: https://www.FreeBSD.org/cgi/man.cgi 876 877UNIX history graphing project 878URL: http://minnie.tuhs.org/Unix_History/index.html 879 880UNIX history 881URL: http://www.levenez.com/unix/ 882 883James Howard: The BSD Family Tree 884URL: http://ezine.daemonnews.org/200104/bsd_family.html 885("what are the differences between FreeBSD, NetBSD, and OpenBSD?") 886 887 888Acknowledgments 889--------------- 890 891Josh Gilliam for suggestions, bug fixes, and finding very old 892original BSD announcements from Usenet or tapes. 893 894Steven M. Schultz for providing 2.8BSD, 2.10BSD, 2.11BSD manual pages. 895 896-- 897Copyright (c) 1997-2012 Wolfram Schneider <wosch@FreeBSD.ORG> 898URL: https://svnweb.freebsd.org/base/head/share/misc/bsd-family-tree 899 900$FreeBSD$ 901