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 | | | | | | | DragonFly 6.0.1 432 | | | | | | | | 433 | | FreeBSD macOS | | OpenBSD 7.0 | 434 | | 12.3 12 | | | | 435 | | | | | | | DragonFly 6.2.1 436 | | | | | | OpenBSD 7.1 | 437 | FreeBSD | | | | | | 438 | 13.1 | | | | | | 439 | | | | | | DragonFly 6.2.2 440 | | | | NetBSD 9.3 | | 441 | | | | OpenBSD 7.2 | 442 | FreeBSD | | | | 443 | 12.4 | | | | 444 | | | | | 445FreeBSD 14 -current | NetBSD -current OpenBSD -current DragonFly -current 446 | | | | | 447 v v v v v 448 449Time 450---------------- 451 452Time tolerance +/- 6 months, depending on which book/article you read; if it 453was the announcement in Usenet or if it was available as tape. 454 455[44B] McKusick, Marshall Kirk, Keith Bostic, Michael J Karels, 456 and John Quarterman. The Design and Implementation of 457 the 4.4BSD Operating System. 458[APL] Apple website [https://www.apple.com/macosx/] 459[BSDI] Berkeley Software Design, Inc. 460[DFB] DragonFlyBSD Project, The. 461[DOC] README, COPYRIGHT on tape. 462[FBD] FreeBSD Project, The. 463[KB] Keith Bostic. BSD2.10 available from Usenix. comp.unix.sources, 464 Volume 11, Info 4, April, 1987. 465[KKK] Mike Karels, Kirk McKusick, and Keith Bostic. tahoe announcement. 466 comp.bugs.4bsd.ucb-fixes, June 15, 1988. 467[KSJ] Michael J. Karels, Carl F. Smith, and William F. Jolitz. 468 Changes in the Kernel in 2.9BSD. Second Berkeley Software 469 Distribution UNIX Version 2.9, July, 1983. 470[NBD] NetBSD Project, The. 471[OBD] OpenBSD Project, The. 472[QCU] Salus, Peter H. A quarter century of UNIX. 473[SMS] Steven M. Schultz. 2.11BSD, UNIX for the PDP-11. 474[TUHS] The Unix Historical Society. https://minnie.tuhs.org/Unix_History/. 475[USE] Usenet announcement. 476[WRS] Wind River Systems, Inc. 477[dmr] Dennis Ritchie, via E-Mail 478 479Multics 1965 480UNIX Summer 1969 481 DEC PDP-7 482First Edition 1971-11-03 [QCU] 483 DEC PDP-11/20, Assembler 484Second Edition 1972-06-12 [QCU] 485 10 UNIX installations 486Third Edition 1973-02-xx [QCU] 487 Pipes, 16 installations 488Fourth Edition 1973-11-xx [QCU] 489 rewriting in C effected, 490 above 30 installations 491Fifth Edition 1974-06-xx [QCU] 492 above 50 installations 493Sixth Edition 1975-05-xx [QCU] 494 port to DEC Vax 495Seventh Edition 1979-01-xx [QCU] 1979-01-10 [TUHS] 496 first portable UNIX 497Eighth Edition 1985-02-xx [QCU] 498 VAX 11/750, VAX 11/780 [dmr] 499 descended from 4.1c BSD [dmr] 500 descended from 4.1 BSD [44B] 501 scooping-out and replacement of the character-device 502 and networking part by the streams mechanism 503 504Ninth Edition 1986-09-xx [QCU] 505Tenth Edition 1989-10-xx [QCU] 506 5071BSD late 1977 508 1978-01-16 [DOC] 509 1978-03-09 [QCU] 510 PDP-11, Pascal, ex(1) 511 30 free copies of 1BSD sent out 512 35 tapes sold for 50 USD [QCU] 5132BSD mid 1978 [QCU] 1979-05-10 [TUHS] 514 75 2BSD tapes shipped 5152.79BSD 1980-04-xx [TUHS] 5162.8BSD 1981-07-xx [KSJ] 517 First 2BSD with bootable V7 kernel plus 518 community fixes. 5192.8.1BSD 1982-01-xx [QCU] 520 set of performance improvements 5212.9BSD 1983-07-xx [KSJ] 5222.9.1BSD 1983-11-xx [TUHS] 5232.9BSD-Seismo 1985-08-xx [SMS] 5242.10BSD 1987-04-xx [KKK] 5252.10.1BSD 1989-01-xx [SMS] 5262.11BSD 1991-03-14 [SMS] 5272.11BSD rev #430 1999-12-13 [SMS] 528 52932V 1978-1[01]-xx [QCU] 1979-03-26 [TUHS] 5303BSD late 1979 [QCU] March 1980 [TUHS] 531 virtual memory, page replacement, 532 demand paging 5334.0BSD 1980-10-xx 5344.1BSD 1981-07-08 [DOC] 5354.1aBSD 1982-04-xx 536 alpha release, 100 sites, networking [44B] 5374.1bBSD internal release, fast filesystem [44B] 5384.1cBSD late 1982 539 beta release, IPC [44B] 5404.2BSD 1983-09-xx [QCU] 541 1983-08-03 [DOC] 5424.3BSD 1986-06-xx [QCU] 543 1986-04-05 [KB], [DOC] 5444.3BSD Tahoe 1988-06-15 [QCU], [DOC] 5454.3BSD NET/1 1988-11-xx [QCU] 546 1989-01-01 [DOC] 5474.3BSD Reno 1990-06-29 [QCU], [DOC] 5484.3BSD NET/2 1991-06-28 [QCU], [DOC] 549 550BSD/386 ALPHA 1991-12-xx [BSDI] 551 first code released to people outside BSDI 552386BSD 0.0 1992-02-xx [DOC] 553BSD/386 0.3.1 1992-04-xx [BSDI] first ext. beta; B customers 554BSD/386 0.3.3 1992-06-xx [BSDI] first CDROM version 555386BSD 0.1 1992-07-28 [DOC] 5564.4BSD Alpha 1992-07-07 557BSD/386 0.9.3 1992-10-xx [BSDI] 558 first external gamma; G customers 559BSD/386 0.9.4 1992-12-xx [BSDI] 560 would have been 1.0 except for request 561 for preliminary injunction 562BSD/386 1.0 1993-03-xx [BSDI] 563 injunction denied; first official release 564NetBSD 0.8 1993-04-20 [NBD] 5654.4BSD 1993-06-01 [USE] 566NetBSD 0.9 1993-08-23 [NBD] 567FreeBSD 1.0 1993-11-01 [FBD] 568FreeBSD 1.0.2 1993-11-14 [FBD] 569 supersedes 1.0 13 days after release. 570BSD/386 1.1 1994-02-xx [BSDI] 5714.4BSD Lite 1994-03-01 [USE] 572FreeBSD 1.1 1994-05-07 [FBD] 573FreeBSD 1.1.5 1994-06-30 [FBD] 574FreeBSD 1.1.5.1 1994-07-05 [FBD] 575 supersedes 1.1.5 5 days after release. 576NetBSD 1.0 1994-10-26 [NBD] 577386BSD 1.0 1994-11-12 [USE] 578FreeBSD 2.0 1994-11-23 [FBD] 579BSD/OS 2.0 1995-01-xx [BSDI] 4.4 lite based 580FreeBSD 2.0.5 1995-06-10 [FBD] 581BSD/OS 2.0.1 1995-06-xx [BSDI] 5824.4BSD Lite Release 2 1995-06-xx [44B] 583 the true final distribution from the CSRG 584FreeBSD 2.1.0 1995-11-19 [FBD] 585NetBSD 1.1 1995-11-26 [NBD] 586BSD/OS 2.1 1996-01-xx [BSDI] 587FreeBSD 2.1.5 1996-07-14 [FBD] 588NetBSD 1.2 1996-10-04 [NBD] 589OpenBSD 2.0 1996-10-18 [OBD] 590FreeBSD 2.1.6 1996-11-16 [FBD] 591FreeBSD 2.1.6.1 1996-11-25 [FBD] (sendmail security release) 592Rhapsody 1997-xx-xx 593FreeBSD 2.1.7 1997-02-20 [FBD] 594BSD/OS 3.0 1997-02-xx [BSDI] 4.4 lite2 based 595FreeBSD 2.2.0 1997-03-16 [FBD] 596FreeBSD 2.2.1 1997-03-25 [FBD] 597FreeBSD 2.2.2 1997-05-16 [FBD] 598NetBSD 1.2.1 1997-05-20 [NBD] (patch release) 599OpenBSD 2.1 1997-06-01 [OBD] 600FreeBSD 2.2.5 1997-10-22 [FBD] 601OpenBSD 2.2 1997-12-01 [OBD] 602NetBSD 1.3 1998-01-04 [NBD] 603FreeBSD 2.2.6 1998-03-25 [FBD] 604NetBSD 1.3.1 1998-03-09 [NBD] (patch release) 605BSD/OS 3.1 1998-03-xx [BSDI] 606OpenBSD 2.3 1998-05-19 [OBD] 607NetBSD 1.3.2 1998-05-29 [NBD] (patch release) 608FreeBSD 2.2.7 1998-07-22 [FBD] 609BSD/OS 4.0 1998-08-xx [BSDI] 610 2-lock MP support, ELF executables 611FreeBSD 3.0 1998-10-16 [FBD] 612 FreeBSD-3.0 is a snapshot from -current, 613 while 3.1 and 3.2 are from 3.x-stable which 614 was branched quite some time after 3.0-release 615FreeBSD 2.2.8 1998-11-29 [FBD] 616OpenBSD 2.4 1998-12-01 [OBD] 617NetBSD 1.3.3 1998-12-23 [NBD] (patch release) 618FreeBSD 3.1 1999-02-15 [FBD] 619BSD/OS 4.0.1 1999-03-xx [BSDI] 620NetBSD 1.4 1999-05-12 [NBD] 621FreeBSD 3.2 1999-05-17 [FBD] 622OpenBSD 2.5 1999-05-19 [OBD] 623NetBSD 1.4.1 1999-08-26 [NBD] (patch release) 624FreeBSD 3.3 1999-09-17 [FBD] 625OpenBSD 2.6 1999-12-01 [OBD] 626FreeBSD 3.4 1999-12-20 [FBD] 627BSD/OS 4.1 1999-12-xx [BSDI] 628FreeBSD 4.0 2000-03-13 [FBD] 629NetBSD 1.4.2 2000-03-19 [NBD] (patch release) 630OpenBSD 2.7 2000-06-15 [OBD] 631FreeBSD 3.5 2000-06-24 [FBD] 632FreeBSD 4.1 2000-07-27 [FBD] 633FreeBSD 3.5.1 2000-07-28 [FBD] 634FreeBSD 4.1.1 2000-09-25 [FBD] (a network-only patch release) 635FreeBSD 4.2 2000-11-21 [FBD] 636NetBSD 1.4.3 2000-11-25 [NBD] (patch release) 637BSD/OS 4.2 2000-11-29 [BSDI] 638OpenBSD 2.8 2000-12-01 [OBD] 639NetBSD 1.5 2000-12-06 [NBD] 640Mac OS X 10.0 2001-03-24 [APL] 641FreeBSD 4.3 2001-04-20 [FBD] 642OpenBSD 2.9 2001-06-01 [OBD] 643NetBSD 1.5.1 2001-07-11 [NBD] (patch release) 644NetBSD 1.5.2 2001-09-13 [NBD] (patch release) 645FreeBSD 4.4 2001-09-18 [FBD] 646Mac OS X 10.1 2001-09-29 [APL] 647OpenBSD 3.0 2001-12-01 [OBD] 648FreeBSD 4.5 2002-01-29 [FBD] 649BSD/OS 4.3 2002-03-14 [WRS] 650OpenBSD 3.1 2002-05-19 [OBD] 651FreeBSD 4.6 2002-06-15 [FBD] 652NetBSD 1.5.3 2002-07-22 [NBD] (patch release) 653FreeBSD 4.6.2 2002-08-15 [FBD] (patch release) 654Mac OS X 10.2 2002-08-23 [APL] 655NetBSD 1.6 2002-09-14 [NBD] 656FreeBSD 4.7 2002-10-08 [FBD] 657OpenBSD 3.2 2002-11-01 [OBD] 658FreeBSD 5.0 2003-01-17 [FBD] 659 FreeBSD 5.0 is a separate branch off of 660 -current, similar to 3.0. 661FreeBSD 4.8 2003-04-03 [FBD] 662NetBSD 1.6.1 2003-04-21 [NBD] (patch release) 663OpenBSD 3.3 2003-05-01 [OBD] 664BSD/OS 5.0 2003-05-?? [WRS] 665FreeBSD 5.1 2003-06-09 [FBD] 666Mac OS X 10.3 2003-10-24 [APL] 667FreeBSD 4.9 2003-10-28 [FBD] 668BSD/OS 5.1 ISE 2003-10-?? [WRS] (final version) 669OpenBSD 3.4 2003-11-01 [OBD] 670FreeBSD 5.2 2004-01-12 [FBD] 671FreeBSD 5.2.1 2004-02-22 [FBD] (patch release) 672NetBSD 1.6.2 2004-03-01 [NBD] (patch release) 673OpenBSD 3.5 2004-04-01 [OBD] 674FreeBSD 4.10 2004-05-27 [FBD] 675DragonFly 1.0 2004-07-12 [DFB] 676OpenBSD 3.6 2004-10-29 [OBD] 677FreeBSD 5.3 2004-11-06 [FBD] 678NetBSD 2.0 2004-12-09 [NBD] 679FreeBSD 4.11 2005-01-25 [FBD] 680DragonFly 1.2.0 2005-04-08 [DFB] 681NetBSD 2.0.2 2005-04-14 [NBD] (security/critical release) 682Mac OS X 10.4 2005-04-29 [APL] 683FreeBSD 5.4 2005-05-09 [FBD] 684OpenBSD 3.7 2005-05-19 [OBD] 685NetBSD 2.0.3 2005-10-31 [NBD] (security/critical release) 686OpenBSD 3.8 2005-11-01 [OBD] 687FreeBSD 6.0 2005-11-01 [FBD] 688NetBSD 2.1 2005-11-02 [NBD] 689NetBSD 3.0 2005-12-23 [NBD] 690DragonFly 1.4.0 2006-01-08 [DFB] 691FreeBSD 2.2.9 2006-04-01 [FBD] 692OpenBSD 3.9 2006-05-01 [OBD] 693FreeBSD 6.1 2006-05-08 [FBD] 694FreeBSD 5.5 2006-05-25 [FBD] 695NetBSD 3.0.1 2006-07-24 [NBD] (security/critical release) 696DragonFly 1.6.0 2006-07-24 [DFB] 697OpenBSD 4.0 2006-11-01 [OBD] 698NetBSD 3.0.2 2006-11-04 [NBD] (security/critical release) 699NetBSD 3.1 2006-11-04 [NBD] 700FreeBSD 6.2 2007-01-15 [FBD] 701DragonFly 1.8.0 2007-01-30 [DFB] 702OpenBSD 4.1 2007-05-01 [OBD] 703DragonFly 1.10.0 2007-08-06 [DFB] 704Mac OS X 10.5 2007-10-26 [APL] 705OpenBSD 4.2 2007-11-01 [OBD] 706NetBSD 4.0 2007-12-19 [NBD] 707FreeBSD 6.3 2008-01-18 [FBD] 708DragonFly 1.12.0 2008-02-26 [DFB] 709FreeBSD 7.0 2008-02-27 [FBD] 710OpenBSD 4.3 2008-05-01 [OBD] 711DragonFly 2.0.0 2008-07-21 [DFB] 712OpenBSD 4.4 2008-11-01 [OBD] 713FreeBSD 6.4 2008-11-28 [FBD] 714FreeBSD 7.1 2009-01-04 [FBD] 715DragonFly 2.2.0 2009-02-17 [DFB] 716NetBSD 5.0 2009-04-29 [NBD] 717OpenBSD 4.5 2009-05-01 [OBD] 718FreeBSD 7.2 2009-05-04 [FBD] 719Mac OS X 10.6 2009-06-08 [APL] 720NetBSD 5.0.1 2009-08-02 [NBD] (security/critical release) 721DragonFly 2.4.0 2009-09-16 [DFB] 722OpenBSD 4.6 2009-10-18 [OBD] 723FreeBSD 8.0 2009-11-26 [FBD] 724NetBSD 5.0.2 2010-02-12 [NBD] (security/critical release) 725FreeBSD 7.3 2010-03-23 [FBD] 726DragonFly 2.6.0 2010-03-28 [DFB] 727OpenBSD 4.7 2010-05-19 [OBD] 728FreeBSD 8.1 2010-07-24 [FBD] 729DragonFly 2.8.2 2010-10-30 [DFB] 730OpenBSD 4.8 2010-11-01 [OBD] 731NetBSD 5.1 2010-11-19 [NBD] 732FreeBSD 7.4 2011-02-24 [FBD] 733FreeBSD 8.2 2011-02-24 [FBD] 734DragonFly 2.10.1 2011-04-26 [DFB] 735OpenBSD 4.9 2011-05-01 [OBD] 736Mac OS X 10.7 2011-07-20 [APL] 737OpenBSD 5.0 2011-11-01 [OBD] 738FreeBSD 9.0 2012-01-12 [FBD] 739NetBSD 5.1.2 2012-02-02 [NBD] (security/critical release) 740DragonFly 3.0.1 2012-02-21 [DFB] 741FreeBSD 8.3 2012-04-18 [FBD] 742OpenBSD 5.1 2012-05-01 [OBD] 743Mac OS X 10.8 2012-07-25 [APL] 744NetBSD 6.0 2012-10-17 [NBD] 745OpenBSD 5.2 2012-11-01 [OBD] 746DragonFly 3.2.1 2012-11-02 [DFB] 747NetBSD 5.2 2012-12-03 [NBD] 748NetBSD 6.0.1 2012-12-26 [NBD] (security/critical release) 749FreeBSD 9.1 2012-12-30 [FBD] 750DragonFly 3.4.1 2013-04-29 [DFB] 751OpenBSD 5.3 2013-05-01 [OBD] 752NetBSD 6.0.2 2013-05-18 [NBD] (security/critical release) 753NetBSD 6.1 2013-05-18 [NBD] 754FreeBSD 8.4 2013-06-07 [FBD] 755NetBSD 6.1.1 2013-08-22 [NBD] 756NetBSD 5.1.3 2013-09-29 [NBD] 757NetBSD 5.2.1 2013-09-29 [NBD] 758FreeBSD 9.2 2013-09-30 [FBD] 759NetBSD 6.0.3 2013-09-30 [NBD] 760NetBSD 6.1.2 2013-09-30 [NBD] 761Mac OS X 10.9 2013-10-22 [APL] 762OpenBSD 5.4 2013-11-01 [OBD] 763DragonFly 3.6.0 2013-11-25 [DFB] 764FreeBSD 10.0 2014-01-20 [FBD] 765NetBSD 5.1.4 2014-01-25 [NBD] 766NetBSD 5.2.2 2014-01-25 [NBD] 767NetBSD 6.0.4 2014-01-25 [NBD] 768NetBSD 6.1.3 2014-01-25 [NBD] 769DragonFly 3.6.1 2014-02-22 [DFB] 770DragonFly 3.6.2 2014-04-10 [DFB] 771NetBSD 6.0.5 2014-04-12 [NBD] 772NetBSD 6.1.4 2014-04-12 [NBD] 773OpenBSD 5.5 2014-05-01 [OBD] 774DragonFly 3.8.0 2014-06-04 [DFB] 775DragonFly 3.8.1 2014-06-16 [DFB] 776DragonFly 3.6.3 2014-06-17 [DFB] 777FreeBSD 9.3 2014-07-05 [FBD] 778DragonFly 3.8.2 2014-08-08 [DFB] 779NetBSD 6.0.6 2014-09-22 [NBD] 780NetBSD 6.1.5 2014-09-22 [NBD] 781Mac OS X 10.10 2014-10-16 [APL] 782OpenBSD 5.6 2014-11-01 [OBD] 783FreeBSD 10.1 2014-11-14 [FBD] 784DragonFly 4.0.1 2014-11-25 [DFB] 785DragonFly 4.0.2 2015-01-07 [DFB] 786DragonFly 4.0.3 2015-01-21 [DFB] 787DragonFly 4.0.4 2015-03-09 [DFB] 788DragonFly 4.0.5 2015-03-23 [DFB] 789OpenBSD 5.7 2015-05-01 [OBD] 790DragonFly 4.2.0 2015-06-29 [DFB] 791FreeBSD 10.2 2015-08-13 [FBD] 792NetBSD 7.0 2015-09-25 [NBD] 793OS X 10.11 2015-09-30 [APL] 794OpenBSD 5.8 2015-10-18 [OBD] 795DragonFly 4.4.1 2015-12-07 [DFB] 796OpenBSD 5.9 2016-03-29 [OBD] 797FreeBSD 10.3 2016-04-04 [FBD] 798NetBSD 7.0.1 2016-05-22 [NBD] 799DragonFly 4.6.0 2016-08-02 [DFB] 800OpenBSD 6.0 2016-09-01 [OBD] 801macOS 10.12 2016-09-20 [APL] 802FreeBSD 11.0 2016-10-10 [FBD] 803NetBSD 7.0.2 2016-10-21 [NBD] 804NetBSD 7.1 2017-03-11 [NBD] 805DragonFly 4.8.0 2017-03-27 [DFB] 806OpenBSD 6.1 2017-04-11 [OBD] 807FreeBSD 11.1 2017-07-26 [FBD] 808macOS 10.13 2017-09-25 [APL] 809FreeBSD 10.4 2017-10-03 [FBD] 810OpenBSD 6.2 2017-10-09 [OBD] 811DragonFly 5.0.0 2017-10-16 [DFB] 812DragonFly 5.0.1 2017-11-06 [DFB] 813DragonFly 5.0.2 2017-12-04 [DFB] 814NetBSD 7.1.1 2017-12-22 [NBD] 815NetBSD 7.1.2 2018-03-15 [NBD] 816OpenBSD 6.3 2018-04-02 [OBD] 817DragonFly 5.2.0 2018-04-10 [DFB] 818DragonFly 5.2.1 2018-05-20 [DFB] 819DragonFly 5.2.2 2018-06-18 [DFB] 820FreeBSD 11.2 2018-06-27 [FBD] 821NetBSD 8.0 2018-07-17 [NBD] 822NetBSD 7.2 2018-08-29 [NBD] 823macOS 10.14 2018-09-24 [APL] 824OpenBSD 6.4 2018-10-18 [OBD] 825DragonFly 5.4.0 2018-12-03 [DFB] 826FreeBSD 12.0 2018-12-11 [FBD] 827DragonFly 5.4.1 2018-12-24 [DFB] 828OpenBSD 6.5 2019-05-01 [OBD] 829NetBSD 8.1 2019-06-04 [NBD] 830DragonFly 5.6 2019-06-17 [DFB] 831DragonFly 5.6.1 2019-06-19 [DFB] 832FreeBSD 11.3 2019-07-09 [FBD] 833DragonFly 5.6.2 2019-08-11 [DFB] 834OpenBSD 6.6 2019-10-17 [OBD] 835macOS 10.15 2019-10-07 [APL] 836macOS 10.15.1 2019-10-29 [APL] (security/critical release) 837FreeBSD 12.1 2019-11-04 [FBD] 838NetBSD 9.0 2020-02-14 [NBD] 839DragonFly 5.8 2020-03-03 [DFB] 840DragonFly 5.6.3 2020-03-11 [DFB] 841NetBSD 8.2 2020-03-31 [NBD] 842DragonFly 5.8.1 2020-05-06 [DFB] 843OpenBSD 6.7 2020-05-19 [OBD] 844FreeBSD 11.4 2020-06-16 [FBD] 845DragonFly 5.8.2 2020-09-23 [DFB] 846DragonFly 5.8.3 2020-09-24 [DFB] 847OpenBSD 6.8 2020-10-18 [OBD] 848NetBSD 9.1 2020-10-18 [NBD] 849FreeBSD 12.2 2020-10-27 [FBD] 850macOS 11 2020-11-19 [APL] 851FreeBSD 13.0 2021-04-13 [FBD] 852OpenBSD 6.9 2021-05-01 [OBD] 853DragonFly 6.0 2021-05-08 [DFB] 854NetBSD 9.2 2021-05-12 [NBD] 855DragonFly 6.0.1 2021-10-12 [DFB] 856OpenBSD 7.0 2021-10-14 [OBD] 857macOS 12 2021-10-25 [APL] 858FreeBSD 12.3 2021-12-01 [FBD] 859DragonFly 6.2.1 2022-01-09 [DFB] 860OpenBSD 7.1 2022-04-21 [OBD] 861FreeBSD 13.1 2022-05-17 [FBD] 862DragonFly 6.2.2 2022-06-09 [DFB] 863NetBSD 9.3 2022-08-04 [NBD] 864OpenBSD 7.2 2022-10-20 [OBD] 865FreeBSD 12.4 2022-12-05 [FBD] 866 867Bibliography 868------------------------ 869 870Leffler, Samuel J., Marshall Kirk McKusick, Michael J Karels and John 871Quarterman. The Design and Implementation of the 4.3BSD UNIX Operating 872System. Reading, Mass. Addison-Wesley, 1989. ISBN 0-201-06196-1 873 874Salus, Peter H. A quarter century of UNIX. Addison-Wesley Publishing 875Company, Inc., 1994. ISBN 0-201-54777-5 876 877McKusick, Marshall Kirk, Keith Bostic, Michael J Karels, and John 878Quarterman. The Design and Implementation of the 4.4BSD Operating 879System. Reading, Mass. Addison-Wesley, 1996. ISBN 0-201-54979-4 880 881McKusick, Marshall Kirk, George Neville-Neil. The Design and 882Implementation of the FreeBSD Operating System. 883Addison-Wesley Professional, Published: Aug 2, 2004. ISBN 0-201-70245-2 884 885McKusick, Marshall Kirk, George Neville-Neil, Robert Watson. The 886Design and Implementation of the FreeBSD Operating System, 2nd Edition. 887Pearson Education, Inc., 2014. ISBN 0-321-96897-2 888 889Doug McIlroy. Research Unix Reader. 890 891Michael G. Brown. The Role of BSD in the Development of Unix. 892Presented to the Tasmanian Unix Special Interest Group of the 893Australian Computer Society, Hobart, August 1993. 894 895Peter H. Salus. Unix at 25. Byte Magazine, October 1994. 896URL: https://web.archive.org/web/20081230094857/http://www.byte.com/art/9410/sec8/art3.htm 897 898Andreas Klemm, Lars Köller. If you're going to San Francisco ... 899Die freien BSD-Varianten von Unix. c't April 1997, page 368ff. 900 901BSD Release Announcements collection. 902URL: https://www.FreeBSD.org/releases/ 903 904BSD Hypertext Man Pages 905URL: https://www.FreeBSD.org/cgi/man.cgi 906 907UNIX history graphing project 908URL: https://minnie.tuhs.org/Unix_History/index.html 909 910UNIX history 911URL: https://www.levenez.com/unix/ 912 913James Howard: The BSD Family Tree 914URL: https://web.archive.org/web/20090427195917/http://ezine.daemonnews.org/200104/bsd_family.html 915("what are the differences between FreeBSD, NetBSD, and OpenBSD?") 916 917 918Acknowledgments 919--------------- 920 921Josh Gilliam for suggestions, bug fixes, and finding very old 922original BSD announcements from Usenet or tapes. 923 924Steven M. Schultz for providing 2.8BSD, 2.10BSD, 2.11BSD manual pages. 925 926-- 927Copyright (c) 1997-2012 Wolfram Schneider <wosch@FreeBSD.ORG> 928URL: https://cgit.freebsd.org/src/tree/share/misc/bsd-family-tree 929 930$FreeBSD$ 931