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 | | | | | 436FreeBSD 14 -current | NetBSD -current OpenBSD -current DragonFly -current 437 | | | | | 438 v v v v v 439 440Time 441---------------- 442 443Time tolerance +/- 6 months, depending on which book/article you read; if it 444was the announcement in Usenet or if it was available as tape. 445 446[44B] McKusick, Marshall Kirk, Keith Bostic, Michael J Karels, 447 and John Quarterman. The Design and Implementation of 448 the 4.4BSD Operating System. 449[APL] Apple website [https://www.apple.com/macosx/] 450[BSDI] Berkeley Software Design, Inc. 451[DFB] DragonFlyBSD Project, The. 452[DOC] README, COPYRIGHT on tape. 453[FBD] FreeBSD Project, The. 454[KB] Keith Bostic. BSD2.10 available from Usenix. comp.unix.sources, 455 Volume 11, Info 4, April, 1987. 456[KKK] Mike Karels, Kirk McKusick, and Keith Bostic. tahoe announcement. 457 comp.bugs.4bsd.ucb-fixes, June 15, 1988. 458[KSJ] Michael J. Karels, Carl F. Smith, and William F. Jolitz. 459 Changes in the Kernel in 2.9BSD. Second Berkeley Software 460 Distribution UNIX Version 2.9, July, 1983. 461[NBD] NetBSD Project, The. 462[OBD] OpenBSD Project, The. 463[QCU] Salus, Peter H. A quarter century of UNIX. 464[SMS] Steven M. Schultz. 2.11BSD, UNIX for the PDP-11. 465[TUHS] The Unix Historical Society. https://minnie.tuhs.org/Unix_History/. 466[USE] Usenet announcement. 467[WRS] Wind River Systems, Inc. 468[dmr] Dennis Ritchie, via E-Mail 469 470Multics 1965 471UNIX Summer 1969 472 DEC PDP-7 473First Edition 1971-11-03 [QCU] 474 DEC PDP-11/20, Assembler 475Second Edition 1972-06-12 [QCU] 476 10 UNIX installations 477Third Edition 1973-02-xx [QCU] 478 Pipes, 16 installations 479Fourth Edition 1973-11-xx [QCU] 480 rewriting in C effected, 481 above 30 installations 482Fifth Edition 1974-06-xx [QCU] 483 above 50 installations 484Sixth Edition 1975-05-xx [QCU] 485 port to DEC Vax 486Seventh Edition 1979-01-xx [QCU] 1979-01-10 [TUHS] 487 first portable UNIX 488Eighth Edition 1985-02-xx [QCU] 489 VAX 11/750, VAX 11/780 [dmr] 490 descended from 4.1c BSD [dmr] 491 descended from 4.1 BSD [44B] 492 scooping-out and replacement of the character-device 493 and networking part by the streams mechanism 494 495Ninth Edition 1986-09-xx [QCU] 496Tenth Edition 1989-10-xx [QCU] 497 4981BSD late 1977 499 1978-01-16 [DOC] 500 1978-03-09 [QCU] 501 PDP-11, Pascal, ex(1) 502 30 free copies of 1BSD sent out 503 35 tapes sold for 50 USD [QCU] 5042BSD mid 1978 [QCU] 1979-05-10 [TUHS] 505 75 2BSD tapes shipped 5062.79BSD 1980-04-xx [TUHS] 5072.8BSD 1981-07-xx [KSJ] 508 First 2BSD with bootable V7 kernel plus 509 community fixes. 5102.8.1BSD 1982-01-xx [QCU] 511 set of performance improvements 5122.9BSD 1983-07-xx [KSJ] 5132.9.1BSD 1983-11-xx [TUHS] 5142.9BSD-Seismo 1985-08-xx [SMS] 5152.10BSD 1987-04-xx [KKK] 5162.10.1BSD 1989-01-xx [SMS] 5172.11BSD 1991-03-14 [SMS] 5182.11BSD rev #430 1999-12-13 [SMS] 519 52032V 1978-1[01]-xx [QCU] 1979-03-26 [TUHS] 5213BSD late 1979 [QCU] March 1980 [TUHS] 522 virtual memory, page replacement, 523 demand paging 5244.0BSD 1980-10-xx 5254.1BSD 1981-07-08 [DOC] 5264.1aBSD 1982-04-xx 527 alpha release, 100 sites, networking [44B] 5284.1bBSD internal release, fast filesystem [44B] 5294.1cBSD late 1982 530 beta release, IPC [44B] 5314.2BSD 1983-09-xx [QCU] 532 1983-08-03 [DOC] 5334.3BSD 1986-06-xx [QCU] 534 1986-04-05 [KB], [DOC] 5354.3BSD Tahoe 1988-06-15 [QCU], [DOC] 5364.3BSD NET/1 1988-11-xx [QCU] 537 1989-01-01 [DOC] 5384.3BSD Reno 1990-06-29 [QCU], [DOC] 5394.3BSD NET/2 1991-06-28 [QCU], [DOC] 540 541BSD/386 ALPHA 1991-12-xx [BSDI] 542 first code released to people outside BSDI 543386BSD 0.0 1992-02-xx [DOC] 544BSD/386 0.3.1 1992-04-xx [BSDI] first ext. beta; B customers 545BSD/386 0.3.3 1992-06-xx [BSDI] first CDROM version 546386BSD 0.1 1992-07-28 [DOC] 5474.4BSD Alpha 1992-07-07 548BSD/386 0.9.3 1992-10-xx [BSDI] 549 first external gamma; G customers 550BSD/386 0.9.4 1992-12-xx [BSDI] 551 would have been 1.0 except for request 552 for preliminary injunction 553BSD/386 1.0 1993-03-xx [BSDI] 554 injunction denied; first official release 555NetBSD 0.8 1993-04-20 [NBD] 5564.4BSD 1993-06-01 [USE] 557NetBSD 0.9 1993-08-23 [NBD] 558FreeBSD 1.0 1993-11-01 [FBD] 559FreeBSD 1.0.2 1993-11-14 [FBD] 560 supersedes 1.0 13 days after release. 561BSD/386 1.1 1994-02-xx [BSDI] 5624.4BSD Lite 1994-03-01 [USE] 563FreeBSD 1.1 1994-05-07 [FBD] 564FreeBSD 1.1.5 1994-06-30 [FBD] 565FreeBSD 1.1.5.1 1994-07-05 [FBD] 566 supersedes 1.1.5 5 days after release. 567NetBSD 1.0 1994-10-26 [NBD] 568386BSD 1.0 1994-11-12 [USE] 569FreeBSD 2.0 1994-11-23 [FBD] 570BSD/OS 2.0 1995-01-xx [BSDI] 4.4 lite based 571FreeBSD 2.0.5 1995-06-10 [FBD] 572BSD/OS 2.0.1 1995-06-xx [BSDI] 5734.4BSD Lite Release 2 1995-06-xx [44B] 574 the true final distribution from the CSRG 575FreeBSD 2.1.0 1995-11-19 [FBD] 576NetBSD 1.1 1995-11-26 [NBD] 577BSD/OS 2.1 1996-01-xx [BSDI] 578FreeBSD 2.1.5 1996-07-14 [FBD] 579NetBSD 1.2 1996-10-04 [NBD] 580OpenBSD 2.0 1996-10-18 [OBD] 581FreeBSD 2.1.6 1996-11-16 [FBD] 582FreeBSD 2.1.6.1 1996-11-25 [FBD] (sendmail security release) 583Rhapsody 1997-xx-xx 584FreeBSD 2.1.7 1997-02-20 [FBD] 585BSD/OS 3.0 1997-02-xx [BSDI] 4.4 lite2 based 586FreeBSD 2.2.0 1997-03-16 [FBD] 587FreeBSD 2.2.1 1997-03-25 [FBD] 588FreeBSD 2.2.2 1997-05-16 [FBD] 589NetBSD 1.2.1 1997-05-20 [NBD] (patch release) 590OpenBSD 2.1 1997-06-01 [OBD] 591FreeBSD 2.2.5 1997-10-22 [FBD] 592OpenBSD 2.2 1997-12-01 [OBD] 593NetBSD 1.3 1998-01-04 [NBD] 594FreeBSD 2.2.6 1998-03-25 [FBD] 595NetBSD 1.3.1 1998-03-09 [NBD] (patch release) 596BSD/OS 3.1 1998-03-xx [BSDI] 597OpenBSD 2.3 1998-05-19 [OBD] 598NetBSD 1.3.2 1998-05-29 [NBD] (patch release) 599FreeBSD 2.2.7 1998-07-22 [FBD] 600BSD/OS 4.0 1998-08-xx [BSDI] 601 2-lock MP support, ELF executables 602FreeBSD 3.0 1998-10-16 [FBD] 603 FreeBSD-3.0 is a snapshot from -current, 604 while 3.1 and 3.2 are from 3.x-stable which 605 was branched quite some time after 3.0-release 606FreeBSD 2.2.8 1998-11-29 [FBD] 607OpenBSD 2.4 1998-12-01 [OBD] 608NetBSD 1.3.3 1998-12-23 [NBD] (patch release) 609FreeBSD 3.1 1999-02-15 [FBD] 610BSD/OS 4.0.1 1999-03-xx [BSDI] 611NetBSD 1.4 1999-05-12 [NBD] 612FreeBSD 3.2 1999-05-17 [FBD] 613OpenBSD 2.5 1999-05-19 [OBD] 614NetBSD 1.4.1 1999-08-26 [NBD] (patch release) 615FreeBSD 3.3 1999-09-17 [FBD] 616OpenBSD 2.6 1999-12-01 [OBD] 617FreeBSD 3.4 1999-12-20 [FBD] 618BSD/OS 4.1 1999-12-xx [BSDI] 619FreeBSD 4.0 2000-03-13 [FBD] 620NetBSD 1.4.2 2000-03-19 [NBD] (patch release) 621OpenBSD 2.7 2000-06-15 [OBD] 622FreeBSD 3.5 2000-06-24 [FBD] 623FreeBSD 4.1 2000-07-27 [FBD] 624FreeBSD 3.5.1 2000-07-28 [FBD] 625FreeBSD 4.1.1 2000-09-25 [FBD] (a network-only patch release) 626FreeBSD 4.2 2000-11-21 [FBD] 627NetBSD 1.4.3 2000-11-25 [NBD] (patch release) 628BSD/OS 4.2 2000-11-29 [BSDI] 629OpenBSD 2.8 2000-12-01 [OBD] 630NetBSD 1.5 2000-12-06 [NBD] 631Mac OS X 10.0 2001-03-24 [APL] 632FreeBSD 4.3 2001-04-20 [FBD] 633OpenBSD 2.9 2001-06-01 [OBD] 634NetBSD 1.5.1 2001-07-11 [NBD] (patch release) 635NetBSD 1.5.2 2001-09-13 [NBD] (patch release) 636FreeBSD 4.4 2001-09-18 [FBD] 637Mac OS X 10.1 2001-09-29 [APL] 638OpenBSD 3.0 2001-12-01 [OBD] 639FreeBSD 4.5 2002-01-29 [FBD] 640BSD/OS 4.3 2002-03-14 [WRS] 641OpenBSD 3.1 2002-05-19 [OBD] 642FreeBSD 4.6 2002-06-15 [FBD] 643NetBSD 1.5.3 2002-07-22 [NBD] (patch release) 644FreeBSD 4.6.2 2002-08-15 [FBD] (patch release) 645Mac OS X 10.2 2002-08-23 [APL] 646NetBSD 1.6 2002-09-14 [NBD] 647FreeBSD 4.7 2002-10-08 [FBD] 648OpenBSD 3.2 2002-11-01 [OBD] 649FreeBSD 5.0 2003-01-17 [FBD] 650 FreeBSD 5.0 is a separate branch off of 651 -current, similar to 3.0. 652FreeBSD 4.8 2003-04-03 [FBD] 653NetBSD 1.6.1 2003-04-21 [NBD] (patch release) 654OpenBSD 3.3 2003-05-01 [OBD] 655BSD/OS 5.0 2003-05-?? [WRS] 656FreeBSD 5.1 2003-06-09 [FBD] 657Mac OS X 10.3 2003-10-24 [APL] 658FreeBSD 4.9 2003-10-28 [FBD] 659BSD/OS 5.1 ISE 2003-10-?? [WRS] (final version) 660OpenBSD 3.4 2003-11-01 [OBD] 661FreeBSD 5.2 2004-01-12 [FBD] 662FreeBSD 5.2.1 2004-02-22 [FBD] (patch release) 663NetBSD 1.6.2 2004-03-01 [NBD] (patch release) 664OpenBSD 3.5 2004-04-01 [OBD] 665FreeBSD 4.10 2004-05-27 [FBD] 666DragonFly 1.0 2004-07-12 [DFB] 667OpenBSD 3.6 2004-10-29 [OBD] 668FreeBSD 5.3 2004-11-06 [FBD] 669NetBSD 2.0 2004-12-09 [NBD] 670FreeBSD 4.11 2005-01-25 [FBD] 671DragonFly 1.2.0 2005-04-08 [DFB] 672NetBSD 2.0.2 2005-04-14 [NBD] (security/critical release) 673Mac OS X 10.4 2005-04-29 [APL] 674FreeBSD 5.4 2005-05-09 [FBD] 675OpenBSD 3.7 2005-05-19 [OBD] 676NetBSD 2.0.3 2005-10-31 [NBD] (security/critical release) 677OpenBSD 3.8 2005-11-01 [OBD] 678FreeBSD 6.0 2005-11-01 [FBD] 679NetBSD 2.1 2005-11-02 [NBD] 680NetBSD 3.0 2005-12-23 [NBD] 681DragonFly 1.4.0 2006-01-08 [DFB] 682FreeBSD 2.2.9 2006-04-01 [FBD] 683OpenBSD 3.9 2006-05-01 [OBD] 684FreeBSD 6.1 2006-05-08 [FBD] 685FreeBSD 5.5 2006-05-25 [FBD] 686NetBSD 3.0.1 2006-07-24 [NBD] (security/critical release) 687DragonFly 1.6.0 2006-07-24 [DFB] 688OpenBSD 4.0 2006-11-01 [OBD] 689NetBSD 3.0.2 2006-11-04 [NBD] (security/critical release) 690NetBSD 3.1 2006-11-04 [NBD] 691FreeBSD 6.2 2007-01-15 [FBD] 692DragonFly 1.8.0 2007-01-30 [DFB] 693OpenBSD 4.1 2007-05-01 [OBD] 694DragonFly 1.10.0 2007-08-06 [DFB] 695Mac OS X 10.5 2007-10-26 [APL] 696OpenBSD 4.2 2007-11-01 [OBD] 697NetBSD 4.0 2007-12-19 [NBD] 698FreeBSD 6.3 2008-01-18 [FBD] 699DragonFly 1.12.0 2008-02-26 [DFB] 700FreeBSD 7.0 2008-02-27 [FBD] 701OpenBSD 4.3 2008-05-01 [OBD] 702DragonFly 2.0.0 2008-07-21 [DFB] 703OpenBSD 4.4 2008-11-01 [OBD] 704FreeBSD 6.4 2008-11-28 [FBD] 705FreeBSD 7.1 2009-01-04 [FBD] 706DragonFly 2.2.0 2009-02-17 [DFB] 707NetBSD 5.0 2009-04-29 [NBD] 708OpenBSD 4.5 2009-05-01 [OBD] 709FreeBSD 7.2 2009-05-04 [FBD] 710Mac OS X 10.6 2009-06-08 [APL] 711NetBSD 5.0.1 2009-08-02 [NBD] (security/critical release) 712DragonFly 2.4.0 2009-09-16 [DFB] 713OpenBSD 4.6 2009-10-18 [OBD] 714FreeBSD 8.0 2009-11-26 [FBD] 715NetBSD 5.0.2 2010-02-12 [NBD] (security/critical release) 716FreeBSD 7.3 2010-03-23 [FBD] 717DragonFly 2.6.0 2010-03-28 [DFB] 718OpenBSD 4.7 2010-05-19 [OBD] 719FreeBSD 8.1 2010-07-24 [FBD] 720DragonFly 2.8.2 2010-10-30 [DFB] 721OpenBSD 4.8 2010-11-01 [OBD] 722NetBSD 5.1 2010-11-19 [NBD] 723FreeBSD 7.4 2011-02-24 [FBD] 724FreeBSD 8.2 2011-02-24 [FBD] 725DragonFly 2.10.1 2011-04-26 [DFB] 726OpenBSD 4.9 2011-05-01 [OBD] 727Mac OS X 10.7 2011-07-20 [APL] 728OpenBSD 5.0 2011-11-01 [OBD] 729FreeBSD 9.0 2012-01-12 [FBD] 730NetBSD 5.1.2 2012-02-02 [NBD] (security/critical release) 731DragonFly 3.0.1 2012-02-21 [DFB] 732FreeBSD 8.3 2012-04-18 [FBD] 733OpenBSD 5.1 2012-05-01 [OBD] 734Mac OS X 10.8 2012-07-25 [APL] 735NetBSD 6.0 2012-10-17 [NBD] 736OpenBSD 5.2 2012-11-01 [OBD] 737DragonFly 3.2.1 2012-11-02 [DFB] 738NetBSD 5.2 2012-12-03 [NBD] 739NetBSD 6.0.1 2012-12-26 [NBD] (security/critical release) 740FreeBSD 9.1 2012-12-30 [FBD] 741DragonFly 3.4.1 2013-04-29 [DFB] 742OpenBSD 5.3 2013-05-01 [OBD] 743NetBSD 6.0.2 2013-05-18 [NBD] (security/critical release) 744NetBSD 6.1 2013-05-18 [NBD] 745FreeBSD 8.4 2013-06-07 [FBD] 746NetBSD 6.1.1 2013-08-22 [NBD] 747NetBSD 5.1.3 2013-09-29 [NBD] 748NetBSD 5.2.1 2013-09-29 [NBD] 749FreeBSD 9.2 2013-09-30 [FBD] 750NetBSD 6.0.3 2013-09-30 [NBD] 751NetBSD 6.1.2 2013-09-30 [NBD] 752Mac OS X 10.9 2013-10-22 [APL] 753OpenBSD 5.4 2013-11-01 [OBD] 754DragonFly 3.6.0 2013-11-25 [DFB] 755FreeBSD 10.0 2014-01-20 [FBD] 756NetBSD 5.1.4 2014-01-25 [NBD] 757NetBSD 5.2.2 2014-01-25 [NBD] 758NetBSD 6.0.4 2014-01-25 [NBD] 759NetBSD 6.1.3 2014-01-25 [NBD] 760DragonFly 3.6.1 2014-02-22 [DFB] 761DragonFly 3.6.2 2014-04-10 [DFB] 762NetBSD 6.0.5 2014-04-12 [NBD] 763NetBSD 6.1.4 2014-04-12 [NBD] 764OpenBSD 5.5 2014-05-01 [OBD] 765DragonFly 3.8.0 2014-06-04 [DFB] 766DragonFly 3.8.1 2014-06-16 [DFB] 767DragonFly 3.6.3 2014-06-17 [DFB] 768FreeBSD 9.3 2014-07-05 [FBD] 769DragonFly 3.8.2 2014-08-08 [DFB] 770NetBSD 6.0.6 2014-09-22 [NBD] 771NetBSD 6.1.5 2014-09-22 [NBD] 772Mac OS X 10.10 2014-10-16 [APL] 773OpenBSD 5.6 2014-11-01 [OBD] 774FreeBSD 10.1 2014-11-14 [FBD] 775DragonFly 4.0.1 2014-11-25 [DFB] 776DragonFly 4.0.2 2015-01-07 [DFB] 777DragonFly 4.0.3 2015-01-21 [DFB] 778DragonFly 4.0.4 2015-03-09 [DFB] 779DragonFly 4.0.5 2015-03-23 [DFB] 780OpenBSD 5.7 2015-05-01 [OBD] 781DragonFly 4.2.0 2015-06-29 [DFB] 782FreeBSD 10.2 2015-08-13 [FBD] 783NetBSD 7.0 2015-09-25 [NBD] 784OS X 10.11 2015-09-30 [APL] 785OpenBSD 5.8 2015-10-18 [OBD] 786DragonFly 4.4.1 2015-12-07 [DFB] 787OpenBSD 5.9 2016-03-29 [OBD] 788FreeBSD 10.3 2016-04-04 [FBD] 789NetBSD 7.0.1 2016-05-22 [NBD] 790DragonFly 4.6.0 2016-08-02 [DFB] 791OpenBSD 6.0 2016-09-01 [OBD] 792macOS 10.12 2016-09-20 [APL] 793FreeBSD 11.0 2016-10-10 [FBD] 794NetBSD 7.0.2 2016-10-21 [NBD] 795NetBSD 7.1 2017-03-11 [NBD] 796DragonFly 4.8.0 2017-03-27 [DFB] 797OpenBSD 6.1 2017-04-11 [OBD] 798FreeBSD 11.1 2017-07-26 [FBD] 799macOS 10.13 2017-09-25 [APL] 800FreeBSD 10.4 2017-10-03 [FBD] 801OpenBSD 6.2 2017-10-09 [OBD] 802DragonFly 5.0.0 2017-10-16 [DFB] 803DragonFly 5.0.1 2017-11-06 [DFB] 804DragonFly 5.0.2 2017-12-04 [DFB] 805NetBSD 7.1.1 2017-12-22 [NBD] 806NetBSD 7.1.2 2018-03-15 [NBD] 807OpenBSD 6.3 2018-04-02 [OBD] 808DragonFly 5.2.0 2018-04-10 [DFB] 809DragonFly 5.2.1 2018-05-20 [DFB] 810DragonFly 5.2.2 2018-06-18 [DFB] 811FreeBSD 11.2 2018-06-27 [FBD] 812NetBSD 8.0 2018-07-17 [NBD] 813NetBSD 7.2 2018-08-29 [NBD] 814macOS 10.14 2018-09-24 [APL] 815OpenBSD 6.4 2018-10-18 [OBD] 816DragonFly 5.4.0 2018-12-03 [DFB] 817FreeBSD 12.0 2018-12-11 [FBD] 818DragonFly 5.4.1 2018-12-24 [DFB] 819OpenBSD 6.5 2019-05-01 [OBD] 820NetBSD 8.1 2019-06-04 [NBD] 821DragonFly 5.6 2019-06-17 [DFB] 822DragonFly 5.6.1 2019-06-19 [DFB] 823FreeBSD 11.3 2019-07-09 [FBD] 824DragonFly 5.6.2 2019-08-11 [DFB] 825OpenBSD 6.6 2019-10-17 [OBD] 826macOS 10.15 2019-10-07 [APL] 827macOS 10.15.1 2019-10-29 [APL] (security/critical release) 828FreeBSD 12.1 2019-11-04 [FBD] 829NetBSD 9.0 2020-02-14 [NBD] 830DragonFly 5.8 2020-03-03 [DFB] 831DragonFly 5.6.3 2020-03-11 [DFB] 832NetBSD 8.2 2020-03-31 [NBD] 833DragonFly 5.8.1 2020-05-06 [DFB] 834OpenBSD 6.7 2020-05-19 [OBD] 835FreeBSD 11.4 2020-06-16 [FBD] 836DragonFly 5.8.2 2020-09-23 [DFB] 837DragonFly 5.8.3 2020-09-24 [DFB] 838OpenBSD 6.8 2020-10-18 [OBD] 839NetBSD 9.1 2020-10-18 [NBD] 840FreeBSD 12.2 2020-10-27 [FBD] 841macOS 11 2020-11-19 [APL] 842FreeBSD 13.0 2021-04-13 [FBD] 843OpenBSD 6.9 2021-05-01 [OBD] 844DragonFly 6.0 2021-05-08 [DFB] 845NetBSD 9.2 2021-05-12 [NBD] 846OpenBSD 7.0 2021-10-14 [OBD] 847macOS 12 2021-10-25 [APL] 848FreeBSD 12.3 2021-12-01 [FBD] 849DragonFly 6.2.1 2022-01-09 [DFB] 850 851Bibliography 852------------------------ 853 854Leffler, Samuel J., Marshall Kirk McKusick, Michael J Karels and John 855Quarterman. The Design and Implementation of the 4.3BSD UNIX Operating 856System. Reading, Mass. Addison-Wesley, 1989. ISBN 0-201-06196-1 857 858Salus, Peter H. A quarter century of UNIX. Addison-Wesley Publishing 859Company, Inc., 1994. ISBN 0-201-54777-5 860 861McKusick, Marshall Kirk, Keith Bostic, Michael J Karels, and John 862Quarterman. The Design and Implementation of the 4.4BSD Operating 863System. Reading, Mass. Addison-Wesley, 1996. ISBN 0-201-54979-4 864 865McKusick, Marshall Kirk, George Neville-Neil. The Design and 866Implementation of the FreeBSD Operating System. 867Addison-Wesley Professional, Published: Aug 2, 2004. ISBN 0-201-70245-2 868 869McKusick, Marshall Kirk, George Neville-Neil, Robert Watson. The 870Design and Implementation of the FreeBSD Operating System, 2nd Edition. 871Pearson Education, Inc., 2014. ISBN 0-321-96897-2 872 873Doug McIlroy. Research Unix Reader. 874 875Michael G. Brown. The Role of BSD in the Development of Unix. 876Presented to the Tasmanian Unix Special Interest Group of the 877Australian Computer Society, Hobart, August 1993. 878 879Peter H. Salus. Unix at 25. Byte Magazine, October 1994. 880URL: https://web.archive.org/web/20081230094857/http://www.byte.com/art/9410/sec8/art3.htm 881 882Andreas Klemm, Lars Köller. If you're going to San Francisco ... 883Die freien BSD-Varianten von Unix. c't April 1997, page 368ff. 884 885BSD Release Announcements collection. 886URL: https://www.FreeBSD.org/releases/ 887 888BSD Hypertext Man Pages 889URL: https://www.FreeBSD.org/cgi/man.cgi 890 891UNIX history graphing project 892URL: https://minnie.tuhs.org/Unix_History/index.html 893 894UNIX history 895URL: https://www.levenez.com/unix/ 896 897James Howard: The BSD Family Tree 898URL: https://web.archive.org/web/20090427195917/http://ezine.daemonnews.org/200104/bsd_family.html 899("what are the differences between FreeBSD, NetBSD, and OpenBSD?") 900 901 902Acknowledgments 903--------------- 904 905Josh Gilliam for suggestions, bug fixes, and finding very old 906original BSD announcements from Usenet or tapes. 907 908Steven M. Schultz for providing 2.8BSD, 2.10BSD, 2.11BSD manual pages. 909 910-- 911Copyright (c) 1997-2012 Wolfram Schneider <wosch@FreeBSD.ORG> 912URL: https://cgit.freebsd.org/src/tree/share/misc/bsd-family-tree 913 914$FreeBSD$ 915