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 macOS | | | | 424 | 12.2 11 | | | | 425 | | | | | | | 426 | `------. | | | | | 427 | | | | | | | 428 *--FreeBSD | | | | | | 429 | 13.0 | | | NetBSD 9.2 OpenBSD 6.9 DragonFly 6.0.0 430 | | | | | | | 431 | | | | | | | 432 | | FreeBSD macOS | OpenBSD 7.0 DragonFly 6.2.1 433 | | 12.3 12 | | | 434 | | | | | | 435 | FreeBSD | | | | 436 | 13.1 | | | | 437 | | | | | 438 | | | | | 439FreeBSD 14 -current | NetBSD -current OpenBSD -current DragonFly -current 440 | | | | | 441 v v v v v 442 443Time 444---------------- 445 446Time tolerance +/- 6 months, depending on which book/article you read; if it 447was the announcement in Usenet or if it was available as tape. 448 449[44B] McKusick, Marshall Kirk, Keith Bostic, Michael J Karels, 450 and John Quarterman. The Design and Implementation of 451 the 4.4BSD Operating System. 452[APL] Apple website [https://www.apple.com/macosx/] 453[BSDI] Berkeley Software Design, Inc. 454[DFB] DragonFlyBSD Project, The. 455[DOC] README, COPYRIGHT on tape. 456[FBD] FreeBSD Project, The. 457[KB] Keith Bostic. BSD2.10 available from Usenix. comp.unix.sources, 458 Volume 11, Info 4, April, 1987. 459[KKK] Mike Karels, Kirk McKusick, and Keith Bostic. tahoe announcement. 460 comp.bugs.4bsd.ucb-fixes, June 15, 1988. 461[KSJ] Michael J. Karels, Carl F. Smith, and William F. Jolitz. 462 Changes in the Kernel in 2.9BSD. Second Berkeley Software 463 Distribution UNIX Version 2.9, July, 1983. 464[NBD] NetBSD Project, The. 465[OBD] OpenBSD Project, The. 466[QCU] Salus, Peter H. A quarter century of UNIX. 467[SMS] Steven M. Schultz. 2.11BSD, UNIX for the PDP-11. 468[TUHS] The Unix Historical Society. https://minnie.tuhs.org/Unix_History/. 469[USE] Usenet announcement. 470[WRS] Wind River Systems, Inc. 471[dmr] Dennis Ritchie, via E-Mail 472 473Multics 1965 474UNIX Summer 1969 475 DEC PDP-7 476First Edition 1971-11-03 [QCU] 477 DEC PDP-11/20, Assembler 478Second Edition 1972-06-12 [QCU] 479 10 UNIX installations 480Third Edition 1973-02-xx [QCU] 481 Pipes, 16 installations 482Fourth Edition 1973-11-xx [QCU] 483 rewriting in C effected, 484 above 30 installations 485Fifth Edition 1974-06-xx [QCU] 486 above 50 installations 487Sixth Edition 1975-05-xx [QCU] 488 port to DEC Vax 489Seventh Edition 1979-01-xx [QCU] 1979-01-10 [TUHS] 490 first portable UNIX 491Eighth Edition 1985-02-xx [QCU] 492 VAX 11/750, VAX 11/780 [dmr] 493 descended from 4.1c BSD [dmr] 494 descended from 4.1 BSD [44B] 495 scooping-out and replacement of the character-device 496 and networking part by the streams mechanism 497 498Ninth Edition 1986-09-xx [QCU] 499Tenth Edition 1989-10-xx [QCU] 500 5011BSD late 1977 502 1978-01-16 [DOC] 503 1978-03-09 [QCU] 504 PDP-11, Pascal, ex(1) 505 30 free copies of 1BSD sent out 506 35 tapes sold for 50 USD [QCU] 5072BSD mid 1978 [QCU] 1979-05-10 [TUHS] 508 75 2BSD tapes shipped 5092.79BSD 1980-04-xx [TUHS] 5102.8BSD 1981-07-xx [KSJ] 511 First 2BSD with bootable V7 kernel plus 512 community fixes. 5132.8.1BSD 1982-01-xx [QCU] 514 set of performance improvements 5152.9BSD 1983-07-xx [KSJ] 5162.9.1BSD 1983-11-xx [TUHS] 5172.9BSD-Seismo 1985-08-xx [SMS] 5182.10BSD 1987-04-xx [KKK] 5192.10.1BSD 1989-01-xx [SMS] 5202.11BSD 1991-03-14 [SMS] 5212.11BSD rev #430 1999-12-13 [SMS] 522 52332V 1978-1[01]-xx [QCU] 1979-03-26 [TUHS] 5243BSD late 1979 [QCU] March 1980 [TUHS] 525 virtual memory, page replacement, 526 demand paging 5274.0BSD 1980-10-xx 5284.1BSD 1981-07-08 [DOC] 5294.1aBSD 1982-04-xx 530 alpha release, 100 sites, networking [44B] 5314.1bBSD internal release, fast filesystem [44B] 5324.1cBSD late 1982 533 beta release, IPC [44B] 5344.2BSD 1983-09-xx [QCU] 535 1983-08-03 [DOC] 5364.3BSD 1986-06-xx [QCU] 537 1986-04-05 [KB], [DOC] 5384.3BSD Tahoe 1988-06-15 [QCU], [DOC] 5394.3BSD NET/1 1988-11-xx [QCU] 540 1989-01-01 [DOC] 5414.3BSD Reno 1990-06-29 [QCU], [DOC] 5424.3BSD NET/2 1991-06-28 [QCU], [DOC] 543 544BSD/386 ALPHA 1991-12-xx [BSDI] 545 first code released to people outside BSDI 546386BSD 0.0 1992-02-xx [DOC] 547BSD/386 0.3.1 1992-04-xx [BSDI] first ext. beta; B customers 548BSD/386 0.3.3 1992-06-xx [BSDI] first CDROM version 549386BSD 0.1 1992-07-28 [DOC] 5504.4BSD Alpha 1992-07-07 551BSD/386 0.9.3 1992-10-xx [BSDI] 552 first external gamma; G customers 553BSD/386 0.9.4 1992-12-xx [BSDI] 554 would have been 1.0 except for request 555 for preliminary injunction 556BSD/386 1.0 1993-03-xx [BSDI] 557 injunction denied; first official release 558NetBSD 0.8 1993-04-20 [NBD] 5594.4BSD 1993-06-01 [USE] 560NetBSD 0.9 1993-08-23 [NBD] 561FreeBSD 1.0 1993-11-01 [FBD] 562FreeBSD 1.0.2 1993-11-14 [FBD] 563 supersedes 1.0 13 days after release. 564BSD/386 1.1 1994-02-xx [BSDI] 5654.4BSD Lite 1994-03-01 [USE] 566FreeBSD 1.1 1994-05-07 [FBD] 567FreeBSD 1.1.5 1994-06-30 [FBD] 568FreeBSD 1.1.5.1 1994-07-05 [FBD] 569 supersedes 1.1.5 5 days after release. 570NetBSD 1.0 1994-10-26 [NBD] 571386BSD 1.0 1994-11-12 [USE] 572FreeBSD 2.0 1994-11-23 [FBD] 573BSD/OS 2.0 1995-01-xx [BSDI] 4.4 lite based 574FreeBSD 2.0.5 1995-06-10 [FBD] 575BSD/OS 2.0.1 1995-06-xx [BSDI] 5764.4BSD Lite Release 2 1995-06-xx [44B] 577 the true final distribution from the CSRG 578FreeBSD 2.1.0 1995-11-19 [FBD] 579NetBSD 1.1 1995-11-26 [NBD] 580BSD/OS 2.1 1996-01-xx [BSDI] 581FreeBSD 2.1.5 1996-07-14 [FBD] 582NetBSD 1.2 1996-10-04 [NBD] 583OpenBSD 2.0 1996-10-18 [OBD] 584FreeBSD 2.1.6 1996-11-16 [FBD] 585FreeBSD 2.1.6.1 1996-11-25 [FBD] (sendmail security release) 586Rhapsody 1997-xx-xx 587FreeBSD 2.1.7 1997-02-20 [FBD] 588BSD/OS 3.0 1997-02-xx [BSDI] 4.4 lite2 based 589FreeBSD 2.2.0 1997-03-16 [FBD] 590FreeBSD 2.2.1 1997-03-25 [FBD] 591FreeBSD 2.2.2 1997-05-16 [FBD] 592NetBSD 1.2.1 1997-05-20 [NBD] (patch release) 593OpenBSD 2.1 1997-06-01 [OBD] 594FreeBSD 2.2.5 1997-10-22 [FBD] 595OpenBSD 2.2 1997-12-01 [OBD] 596NetBSD 1.3 1998-01-04 [NBD] 597FreeBSD 2.2.6 1998-03-25 [FBD] 598NetBSD 1.3.1 1998-03-09 [NBD] (patch release) 599BSD/OS 3.1 1998-03-xx [BSDI] 600OpenBSD 2.3 1998-05-19 [OBD] 601NetBSD 1.3.2 1998-05-29 [NBD] (patch release) 602FreeBSD 2.2.7 1998-07-22 [FBD] 603BSD/OS 4.0 1998-08-xx [BSDI] 604 2-lock MP support, ELF executables 605FreeBSD 3.0 1998-10-16 [FBD] 606 FreeBSD-3.0 is a snapshot from -current, 607 while 3.1 and 3.2 are from 3.x-stable which 608 was branched quite some time after 3.0-release 609FreeBSD 2.2.8 1998-11-29 [FBD] 610OpenBSD 2.4 1998-12-01 [OBD] 611NetBSD 1.3.3 1998-12-23 [NBD] (patch release) 612FreeBSD 3.1 1999-02-15 [FBD] 613BSD/OS 4.0.1 1999-03-xx [BSDI] 614NetBSD 1.4 1999-05-12 [NBD] 615FreeBSD 3.2 1999-05-17 [FBD] 616OpenBSD 2.5 1999-05-19 [OBD] 617NetBSD 1.4.1 1999-08-26 [NBD] (patch release) 618FreeBSD 3.3 1999-09-17 [FBD] 619OpenBSD 2.6 1999-12-01 [OBD] 620FreeBSD 3.4 1999-12-20 [FBD] 621BSD/OS 4.1 1999-12-xx [BSDI] 622FreeBSD 4.0 2000-03-13 [FBD] 623NetBSD 1.4.2 2000-03-19 [NBD] (patch release) 624OpenBSD 2.7 2000-06-15 [OBD] 625FreeBSD 3.5 2000-06-24 [FBD] 626FreeBSD 4.1 2000-07-27 [FBD] 627FreeBSD 3.5.1 2000-07-28 [FBD] 628FreeBSD 4.1.1 2000-09-25 [FBD] (a network-only patch release) 629FreeBSD 4.2 2000-11-21 [FBD] 630NetBSD 1.4.3 2000-11-25 [NBD] (patch release) 631BSD/OS 4.2 2000-11-29 [BSDI] 632OpenBSD 2.8 2000-12-01 [OBD] 633NetBSD 1.5 2000-12-06 [NBD] 634Mac OS X 10.0 2001-03-24 [APL] 635FreeBSD 4.3 2001-04-20 [FBD] 636OpenBSD 2.9 2001-06-01 [OBD] 637NetBSD 1.5.1 2001-07-11 [NBD] (patch release) 638NetBSD 1.5.2 2001-09-13 [NBD] (patch release) 639FreeBSD 4.4 2001-09-18 [FBD] 640Mac OS X 10.1 2001-09-29 [APL] 641OpenBSD 3.0 2001-12-01 [OBD] 642FreeBSD 4.5 2002-01-29 [FBD] 643BSD/OS 4.3 2002-03-14 [WRS] 644OpenBSD 3.1 2002-05-19 [OBD] 645FreeBSD 4.6 2002-06-15 [FBD] 646NetBSD 1.5.3 2002-07-22 [NBD] (patch release) 647FreeBSD 4.6.2 2002-08-15 [FBD] (patch release) 648Mac OS X 10.2 2002-08-23 [APL] 649NetBSD 1.6 2002-09-14 [NBD] 650FreeBSD 4.7 2002-10-08 [FBD] 651OpenBSD 3.2 2002-11-01 [OBD] 652FreeBSD 5.0 2003-01-17 [FBD] 653 FreeBSD 5.0 is a separate branch off of 654 -current, similar to 3.0. 655FreeBSD 4.8 2003-04-03 [FBD] 656NetBSD 1.6.1 2003-04-21 [NBD] (patch release) 657OpenBSD 3.3 2003-05-01 [OBD] 658BSD/OS 5.0 2003-05-?? [WRS] 659FreeBSD 5.1 2003-06-09 [FBD] 660Mac OS X 10.3 2003-10-24 [APL] 661FreeBSD 4.9 2003-10-28 [FBD] 662BSD/OS 5.1 ISE 2003-10-?? [WRS] (final version) 663OpenBSD 3.4 2003-11-01 [OBD] 664FreeBSD 5.2 2004-01-12 [FBD] 665FreeBSD 5.2.1 2004-02-22 [FBD] (patch release) 666NetBSD 1.6.2 2004-03-01 [NBD] (patch release) 667OpenBSD 3.5 2004-04-01 [OBD] 668FreeBSD 4.10 2004-05-27 [FBD] 669DragonFly 1.0 2004-07-12 [DFB] 670OpenBSD 3.6 2004-10-29 [OBD] 671FreeBSD 5.3 2004-11-06 [FBD] 672NetBSD 2.0 2004-12-09 [NBD] 673FreeBSD 4.11 2005-01-25 [FBD] 674DragonFly 1.2.0 2005-04-08 [DFB] 675NetBSD 2.0.2 2005-04-14 [NBD] (security/critical release) 676Mac OS X 10.4 2005-04-29 [APL] 677FreeBSD 5.4 2005-05-09 [FBD] 678OpenBSD 3.7 2005-05-19 [OBD] 679NetBSD 2.0.3 2005-10-31 [NBD] (security/critical release) 680OpenBSD 3.8 2005-11-01 [OBD] 681FreeBSD 6.0 2005-11-01 [FBD] 682NetBSD 2.1 2005-11-02 [NBD] 683NetBSD 3.0 2005-12-23 [NBD] 684DragonFly 1.4.0 2006-01-08 [DFB] 685FreeBSD 2.2.9 2006-04-01 [FBD] 686OpenBSD 3.9 2006-05-01 [OBD] 687FreeBSD 6.1 2006-05-08 [FBD] 688FreeBSD 5.5 2006-05-25 [FBD] 689NetBSD 3.0.1 2006-07-24 [NBD] (security/critical release) 690DragonFly 1.6.0 2006-07-24 [DFB] 691OpenBSD 4.0 2006-11-01 [OBD] 692NetBSD 3.0.2 2006-11-04 [NBD] (security/critical release) 693NetBSD 3.1 2006-11-04 [NBD] 694FreeBSD 6.2 2007-01-15 [FBD] 695DragonFly 1.8.0 2007-01-30 [DFB] 696OpenBSD 4.1 2007-05-01 [OBD] 697DragonFly 1.10.0 2007-08-06 [DFB] 698Mac OS X 10.5 2007-10-26 [APL] 699OpenBSD 4.2 2007-11-01 [OBD] 700NetBSD 4.0 2007-12-19 [NBD] 701FreeBSD 6.3 2008-01-18 [FBD] 702DragonFly 1.12.0 2008-02-26 [DFB] 703FreeBSD 7.0 2008-02-27 [FBD] 704OpenBSD 4.3 2008-05-01 [OBD] 705DragonFly 2.0.0 2008-07-21 [DFB] 706OpenBSD 4.4 2008-11-01 [OBD] 707FreeBSD 6.4 2008-11-28 [FBD] 708FreeBSD 7.1 2009-01-04 [FBD] 709DragonFly 2.2.0 2009-02-17 [DFB] 710NetBSD 5.0 2009-04-29 [NBD] 711OpenBSD 4.5 2009-05-01 [OBD] 712FreeBSD 7.2 2009-05-04 [FBD] 713Mac OS X 10.6 2009-06-08 [APL] 714NetBSD 5.0.1 2009-08-02 [NBD] (security/critical release) 715DragonFly 2.4.0 2009-09-16 [DFB] 716OpenBSD 4.6 2009-10-18 [OBD] 717FreeBSD 8.0 2009-11-26 [FBD] 718NetBSD 5.0.2 2010-02-12 [NBD] (security/critical release) 719FreeBSD 7.3 2010-03-23 [FBD] 720DragonFly 2.6.0 2010-03-28 [DFB] 721OpenBSD 4.7 2010-05-19 [OBD] 722FreeBSD 8.1 2010-07-24 [FBD] 723DragonFly 2.8.2 2010-10-30 [DFB] 724OpenBSD 4.8 2010-11-01 [OBD] 725NetBSD 5.1 2010-11-19 [NBD] 726FreeBSD 7.4 2011-02-24 [FBD] 727FreeBSD 8.2 2011-02-24 [FBD] 728DragonFly 2.10.1 2011-04-26 [DFB] 729OpenBSD 4.9 2011-05-01 [OBD] 730Mac OS X 10.7 2011-07-20 [APL] 731OpenBSD 5.0 2011-11-01 [OBD] 732FreeBSD 9.0 2012-01-12 [FBD] 733NetBSD 5.1.2 2012-02-02 [NBD] (security/critical release) 734DragonFly 3.0.1 2012-02-21 [DFB] 735FreeBSD 8.3 2012-04-18 [FBD] 736OpenBSD 5.1 2012-05-01 [OBD] 737Mac OS X 10.8 2012-07-25 [APL] 738NetBSD 6.0 2012-10-17 [NBD] 739OpenBSD 5.2 2012-11-01 [OBD] 740DragonFly 3.2.1 2012-11-02 [DFB] 741NetBSD 5.2 2012-12-03 [NBD] 742NetBSD 6.0.1 2012-12-26 [NBD] (security/critical release) 743FreeBSD 9.1 2012-12-30 [FBD] 744DragonFly 3.4.1 2013-04-29 [DFB] 745OpenBSD 5.3 2013-05-01 [OBD] 746NetBSD 6.0.2 2013-05-18 [NBD] (security/critical release) 747NetBSD 6.1 2013-05-18 [NBD] 748FreeBSD 8.4 2013-06-07 [FBD] 749NetBSD 6.1.1 2013-08-22 [NBD] 750NetBSD 5.1.3 2013-09-29 [NBD] 751NetBSD 5.2.1 2013-09-29 [NBD] 752FreeBSD 9.2 2013-09-30 [FBD] 753NetBSD 6.0.3 2013-09-30 [NBD] 754NetBSD 6.1.2 2013-09-30 [NBD] 755Mac OS X 10.9 2013-10-22 [APL] 756OpenBSD 5.4 2013-11-01 [OBD] 757DragonFly 3.6.0 2013-11-25 [DFB] 758FreeBSD 10.0 2014-01-20 [FBD] 759NetBSD 5.1.4 2014-01-25 [NBD] 760NetBSD 5.2.2 2014-01-25 [NBD] 761NetBSD 6.0.4 2014-01-25 [NBD] 762NetBSD 6.1.3 2014-01-25 [NBD] 763DragonFly 3.6.1 2014-02-22 [DFB] 764DragonFly 3.6.2 2014-04-10 [DFB] 765NetBSD 6.0.5 2014-04-12 [NBD] 766NetBSD 6.1.4 2014-04-12 [NBD] 767OpenBSD 5.5 2014-05-01 [OBD] 768DragonFly 3.8.0 2014-06-04 [DFB] 769DragonFly 3.8.1 2014-06-16 [DFB] 770DragonFly 3.6.3 2014-06-17 [DFB] 771FreeBSD 9.3 2014-07-05 [FBD] 772DragonFly 3.8.2 2014-08-08 [DFB] 773NetBSD 6.0.6 2014-09-22 [NBD] 774NetBSD 6.1.5 2014-09-22 [NBD] 775Mac OS X 10.10 2014-10-16 [APL] 776OpenBSD 5.6 2014-11-01 [OBD] 777FreeBSD 10.1 2014-11-14 [FBD] 778DragonFly 4.0.1 2014-11-25 [DFB] 779DragonFly 4.0.2 2015-01-07 [DFB] 780DragonFly 4.0.3 2015-01-21 [DFB] 781DragonFly 4.0.4 2015-03-09 [DFB] 782DragonFly 4.0.5 2015-03-23 [DFB] 783OpenBSD 5.7 2015-05-01 [OBD] 784DragonFly 4.2.0 2015-06-29 [DFB] 785FreeBSD 10.2 2015-08-13 [FBD] 786NetBSD 7.0 2015-09-25 [NBD] 787OS X 10.11 2015-09-30 [APL] 788OpenBSD 5.8 2015-10-18 [OBD] 789DragonFly 4.4.1 2015-12-07 [DFB] 790OpenBSD 5.9 2016-03-29 [OBD] 791FreeBSD 10.3 2016-04-04 [FBD] 792NetBSD 7.0.1 2016-05-22 [NBD] 793DragonFly 4.6.0 2016-08-02 [DFB] 794OpenBSD 6.0 2016-09-01 [OBD] 795macOS 10.12 2016-09-20 [APL] 796FreeBSD 11.0 2016-10-10 [FBD] 797NetBSD 7.0.2 2016-10-21 [NBD] 798NetBSD 7.1 2017-03-11 [NBD] 799DragonFly 4.8.0 2017-03-27 [DFB] 800OpenBSD 6.1 2017-04-11 [OBD] 801FreeBSD 11.1 2017-07-26 [FBD] 802macOS 10.13 2017-09-25 [APL] 803FreeBSD 10.4 2017-10-03 [FBD] 804OpenBSD 6.2 2017-10-09 [OBD] 805DragonFly 5.0.0 2017-10-16 [DFB] 806DragonFly 5.0.1 2017-11-06 [DFB] 807DragonFly 5.0.2 2017-12-04 [DFB] 808NetBSD 7.1.1 2017-12-22 [NBD] 809NetBSD 7.1.2 2018-03-15 [NBD] 810OpenBSD 6.3 2018-04-02 [OBD] 811DragonFly 5.2.0 2018-04-10 [DFB] 812DragonFly 5.2.1 2018-05-20 [DFB] 813DragonFly 5.2.2 2018-06-18 [DFB] 814FreeBSD 11.2 2018-06-27 [FBD] 815NetBSD 8.0 2018-07-17 [NBD] 816NetBSD 7.2 2018-08-29 [NBD] 817macOS 10.14 2018-09-24 [APL] 818OpenBSD 6.4 2018-10-18 [OBD] 819DragonFly 5.4.0 2018-12-03 [DFB] 820FreeBSD 12.0 2018-12-11 [FBD] 821DragonFly 5.4.1 2018-12-24 [DFB] 822OpenBSD 6.5 2019-05-01 [OBD] 823NetBSD 8.1 2019-06-04 [NBD] 824DragonFly 5.6 2019-06-17 [DFB] 825DragonFly 5.6.1 2019-06-19 [DFB] 826FreeBSD 11.3 2019-07-09 [FBD] 827DragonFly 5.6.2 2019-08-11 [DFB] 828OpenBSD 6.6 2019-10-17 [OBD] 829macOS 10.15 2019-10-07 [APL] 830macOS 10.15.1 2019-10-29 [APL] (security/critical release) 831FreeBSD 12.1 2019-11-04 [FBD] 832NetBSD 9.0 2020-02-14 [NBD] 833DragonFly 5.8 2020-03-03 [DFB] 834DragonFly 5.6.3 2020-03-11 [DFB] 835NetBSD 8.2 2020-03-31 [NBD] 836DragonFly 5.8.1 2020-05-06 [DFB] 837OpenBSD 6.7 2020-05-19 [OBD] 838FreeBSD 11.4 2020-06-16 [FBD] 839DragonFly 5.8.2 2020-09-23 [DFB] 840DragonFly 5.8.3 2020-09-24 [DFB] 841OpenBSD 6.8 2020-10-18 [OBD] 842NetBSD 9.1 2020-10-18 [NBD] 843FreeBSD 12.2 2020-10-27 [FBD] 844macOS 11 2020-11-19 [APL] 845FreeBSD 13.0 2021-04-13 [FBD] 846OpenBSD 6.9 2021-05-01 [OBD] 847DragonFly 6.0 2021-05-08 [DFB] 848NetBSD 9.2 2021-05-12 [NBD] 849OpenBSD 7.0 2021-10-14 [OBD] 850macOS 12 2021-10-25 [APL] 851FreeBSD 12.3 2021-12-01 [FBD] 852DragonFly 6.2.1 2022-01-09 [DFB] 853FreeBSD 13.1 2022-05-17 [FBD] 854 855Bibliography 856------------------------ 857 858Leffler, Samuel J., Marshall Kirk McKusick, Michael J Karels and John 859Quarterman. The Design and Implementation of the 4.3BSD UNIX Operating 860System. Reading, Mass. Addison-Wesley, 1989. ISBN 0-201-06196-1 861 862Salus, Peter H. A quarter century of UNIX. Addison-Wesley Publishing 863Company, Inc., 1994. ISBN 0-201-54777-5 864 865McKusick, Marshall Kirk, Keith Bostic, Michael J Karels, and John 866Quarterman. The Design and Implementation of the 4.4BSD Operating 867System. Reading, Mass. Addison-Wesley, 1996. ISBN 0-201-54979-4 868 869McKusick, Marshall Kirk, George Neville-Neil. The Design and 870Implementation of the FreeBSD Operating System. 871Addison-Wesley Professional, Published: Aug 2, 2004. ISBN 0-201-70245-2 872 873McKusick, Marshall Kirk, George Neville-Neil, Robert Watson. The 874Design and Implementation of the FreeBSD Operating System, 2nd Edition. 875Pearson Education, Inc., 2014. ISBN 0-321-96897-2 876 877Doug McIlroy. Research Unix Reader. 878 879Michael G. Brown. The Role of BSD in the Development of Unix. 880Presented to the Tasmanian Unix Special Interest Group of the 881Australian Computer Society, Hobart, August 1993. 882 883Peter H. Salus. Unix at 25. Byte Magazine, October 1994. 884URL: https://web.archive.org/web/20081230094857/http://www.byte.com/art/9410/sec8/art3.htm 885 886Andreas Klemm, Lars Köller. If you're going to San Francisco ... 887Die freien BSD-Varianten von Unix. c't April 1997, page 368ff. 888 889BSD Release Announcements collection. 890URL: https://www.FreeBSD.org/releases/ 891 892BSD Hypertext Man Pages 893URL: https://www.FreeBSD.org/cgi/man.cgi 894 895UNIX history graphing project 896URL: https://minnie.tuhs.org/Unix_History/index.html 897 898UNIX history 899URL: https://www.levenez.com/unix/ 900 901James Howard: The BSD Family Tree 902URL: https://web.archive.org/web/20090427195917/http://ezine.daemonnews.org/200104/bsd_family.html 903("what are the differences between FreeBSD, NetBSD, and OpenBSD?") 904 905 906Acknowledgments 907--------------- 908 909Josh Gilliam for suggestions, bug fixes, and finding very old 910original BSD announcements from Usenet or tapes. 911 912Steven M. Schultz for providing 2.8BSD, 2.10BSD, 2.11BSD manual pages. 913 914-- 915Copyright (c) 1997-2012 Wolfram Schneider <wosch@FreeBSD.ORG> 916URL: https://cgit.freebsd.org/src/tree/share/misc/bsd-family-tree 917 918$FreeBSD$ 919