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 | | macOS | OpenBSD 7.2 | 442 | | 13 | | | 443 | FreeBSD | | | | 444 | 12.4 | | | | 445 | | | | DragonFly 6.4.0 446 | | | | | 447FreeBSD 14 -current | NetBSD -current OpenBSD -current DragonFly -current 448 | | | | | 449 v v v v v 450 451Time 452---------------- 453 454Time tolerance +/- 6 months, depending on which book/article you read; if it 455was the announcement in Usenet or if it was available as tape. 456 457[44B] McKusick, Marshall Kirk, Keith Bostic, Michael J Karels, 458 and John Quarterman. The Design and Implementation of 459 the 4.4BSD Operating System. 460[APL] Apple website [https://www.apple.com/macosx/] 461[BSDI] Berkeley Software Design, Inc. 462[DFB] DragonFlyBSD Project, The. 463[DOC] README, COPYRIGHT on tape. 464[FBD] FreeBSD Project, The. 465[KB] Keith Bostic. BSD2.10 available from Usenix. comp.unix.sources, 466 Volume 11, Info 4, April, 1987. 467[KKK] Mike Karels, Kirk McKusick, and Keith Bostic. tahoe announcement. 468 comp.bugs.4bsd.ucb-fixes, June 15, 1988. 469[KSJ] Michael J. Karels, Carl F. Smith, and William F. Jolitz. 470 Changes in the Kernel in 2.9BSD. Second Berkeley Software 471 Distribution UNIX Version 2.9, July, 1983. 472[NBD] NetBSD Project, The. 473[OBD] OpenBSD Project, The. 474[QCU] Salus, Peter H. A quarter century of UNIX. 475[SMS] Steven M. Schultz. 2.11BSD, UNIX for the PDP-11. 476[TUHS] The Unix Historical Society. https://minnie.tuhs.org/Unix_History/. 477[USE] Usenet announcement. 478[WRS] Wind River Systems, Inc. 479[dmr] Dennis Ritchie, via E-Mail 480 481Multics 1965 482UNIX Summer 1969 483 DEC PDP-7 484First Edition 1971-11-03 [QCU] 485 DEC PDP-11/20, Assembler 486Second Edition 1972-06-12 [QCU] 487 10 UNIX installations 488Third Edition 1973-02-xx [QCU] 489 Pipes, 16 installations 490Fourth Edition 1973-11-xx [QCU] 491 rewriting in C effected, 492 above 30 installations 493Fifth Edition 1974-06-xx [QCU] 494 above 50 installations 495Sixth Edition 1975-05-xx [QCU] 496 port to DEC Vax 497Seventh Edition 1979-01-xx [QCU] 1979-01-10 [TUHS] 498 first portable UNIX 499Eighth Edition 1985-02-xx [QCU] 500 VAX 11/750, VAX 11/780 [dmr] 501 descended from 4.1c BSD [dmr] 502 descended from 4.1 BSD [44B] 503 scooping-out and replacement of the character-device 504 and networking part by the streams mechanism 505 506Ninth Edition 1986-09-xx [QCU] 507Tenth Edition 1989-10-xx [QCU] 508 5091BSD late 1977 510 1978-01-16 [DOC] 511 1978-03-09 [QCU] 512 PDP-11, Pascal, ex(1) 513 30 free copies of 1BSD sent out 514 35 tapes sold for 50 USD [QCU] 5152BSD mid 1978 [QCU] 1979-05-10 [TUHS] 516 75 2BSD tapes shipped 5172.79BSD 1980-04-xx [TUHS] 5182.8BSD 1981-07-xx [KSJ] 519 First 2BSD with bootable V7 kernel plus 520 community fixes. 5212.8.1BSD 1982-01-xx [QCU] 522 set of performance improvements 5232.9BSD 1983-07-xx [KSJ] 5242.9.1BSD 1983-11-xx [TUHS] 5252.9BSD-Seismo 1985-08-xx [SMS] 5262.10BSD 1987-04-xx [KKK] 5272.10.1BSD 1989-01-xx [SMS] 5282.11BSD 1991-03-14 [SMS] 5292.11BSD rev #430 1999-12-13 [SMS] 530 53132V 1978-1[01]-xx [QCU] 1979-03-26 [TUHS] 5323BSD late 1979 [QCU] March 1980 [TUHS] 533 virtual memory, page replacement, 534 demand paging 5354.0BSD 1980-10-xx 5364.1BSD 1981-07-08 [DOC] 5374.1aBSD 1982-04-xx 538 alpha release, 100 sites, networking [44B] 5394.1bBSD internal release, fast filesystem [44B] 5404.1cBSD late 1982 541 beta release, IPC [44B] 5424.2BSD 1983-09-xx [QCU] 543 1983-08-03 [DOC] 5444.3BSD 1986-06-xx [QCU] 545 1986-04-05 [KB], [DOC] 5464.3BSD Tahoe 1988-06-15 [QCU], [DOC] 5474.3BSD NET/1 1988-11-xx [QCU] 548 1989-01-01 [DOC] 5494.3BSD Reno 1990-06-29 [QCU], [DOC] 5504.3BSD NET/2 1991-06-28 [QCU], [DOC] 551 552BSD/386 ALPHA 1991-12-xx [BSDI] 553 first code released to people outside BSDI 554386BSD 0.0 1992-02-xx [DOC] 555BSD/386 0.3.1 1992-04-xx [BSDI] first ext. beta; B customers 556BSD/386 0.3.3 1992-06-xx [BSDI] first CDROM version 557386BSD 0.1 1992-07-28 [DOC] 5584.4BSD Alpha 1992-07-07 559BSD/386 0.9.3 1992-10-xx [BSDI] 560 first external gamma; G customers 561BSD/386 0.9.4 1992-12-xx [BSDI] 562 would have been 1.0 except for request 563 for preliminary injunction 564BSD/386 1.0 1993-03-xx [BSDI] 565 injunction denied; first official release 566NetBSD 0.8 1993-04-20 [NBD] 5674.4BSD 1993-06-01 [USE] 568NetBSD 0.9 1993-08-23 [NBD] 569FreeBSD 1.0 1993-11-01 [FBD] 570FreeBSD 1.0.2 1993-11-14 [FBD] 571 supersedes 1.0 13 days after release. 572BSD/386 1.1 1994-02-xx [BSDI] 5734.4BSD Lite 1994-03-01 [USE] 574FreeBSD 1.1 1994-05-07 [FBD] 575FreeBSD 1.1.5 1994-06-30 [FBD] 576FreeBSD 1.1.5.1 1994-07-05 [FBD] 577 supersedes 1.1.5 5 days after release. 578NetBSD 1.0 1994-10-26 [NBD] 579386BSD 1.0 1994-11-12 [USE] 580FreeBSD 2.0 1994-11-23 [FBD] 581BSD/OS 2.0 1995-01-xx [BSDI] 4.4 lite based 582FreeBSD 2.0.5 1995-06-10 [FBD] 583BSD/OS 2.0.1 1995-06-xx [BSDI] 5844.4BSD Lite Release 2 1995-06-xx [44B] 585 the true final distribution from the CSRG 586FreeBSD 2.1.0 1995-11-19 [FBD] 587NetBSD 1.1 1995-11-26 [NBD] 588BSD/OS 2.1 1996-01-xx [BSDI] 589FreeBSD 2.1.5 1996-07-14 [FBD] 590NetBSD 1.2 1996-10-04 [NBD] 591OpenBSD 2.0 1996-10-18 [OBD] 592FreeBSD 2.1.6 1996-11-16 [FBD] 593FreeBSD 2.1.6.1 1996-11-25 [FBD] (sendmail security release) 594Rhapsody 1997-xx-xx 595FreeBSD 2.1.7 1997-02-20 [FBD] 596BSD/OS 3.0 1997-02-xx [BSDI] 4.4 lite2 based 597FreeBSD 2.2.0 1997-03-16 [FBD] 598FreeBSD 2.2.1 1997-03-25 [FBD] 599FreeBSD 2.2.2 1997-05-16 [FBD] 600NetBSD 1.2.1 1997-05-20 [NBD] (patch release) 601OpenBSD 2.1 1997-06-01 [OBD] 602FreeBSD 2.2.5 1997-10-22 [FBD] 603OpenBSD 2.2 1997-12-01 [OBD] 604NetBSD 1.3 1998-01-04 [NBD] 605FreeBSD 2.2.6 1998-03-25 [FBD] 606NetBSD 1.3.1 1998-03-09 [NBD] (patch release) 607BSD/OS 3.1 1998-03-xx [BSDI] 608OpenBSD 2.3 1998-05-19 [OBD] 609NetBSD 1.3.2 1998-05-29 [NBD] (patch release) 610FreeBSD 2.2.7 1998-07-22 [FBD] 611BSD/OS 4.0 1998-08-xx [BSDI] 612 2-lock MP support, ELF executables 613FreeBSD 3.0 1998-10-16 [FBD] 614 FreeBSD-3.0 is a snapshot from -current, 615 while 3.1 and 3.2 are from 3.x-stable which 616 was branched quite some time after 3.0-release 617FreeBSD 2.2.8 1998-11-29 [FBD] 618OpenBSD 2.4 1998-12-01 [OBD] 619NetBSD 1.3.3 1998-12-23 [NBD] (patch release) 620FreeBSD 3.1 1999-02-15 [FBD] 621BSD/OS 4.0.1 1999-03-xx [BSDI] 622NetBSD 1.4 1999-05-12 [NBD] 623FreeBSD 3.2 1999-05-17 [FBD] 624OpenBSD 2.5 1999-05-19 [OBD] 625NetBSD 1.4.1 1999-08-26 [NBD] (patch release) 626FreeBSD 3.3 1999-09-17 [FBD] 627OpenBSD 2.6 1999-12-01 [OBD] 628FreeBSD 3.4 1999-12-20 [FBD] 629BSD/OS 4.1 1999-12-xx [BSDI] 630FreeBSD 4.0 2000-03-13 [FBD] 631NetBSD 1.4.2 2000-03-19 [NBD] (patch release) 632OpenBSD 2.7 2000-06-15 [OBD] 633FreeBSD 3.5 2000-06-24 [FBD] 634FreeBSD 4.1 2000-07-27 [FBD] 635FreeBSD 3.5.1 2000-07-28 [FBD] 636FreeBSD 4.1.1 2000-09-25 [FBD] (a network-only patch release) 637FreeBSD 4.2 2000-11-21 [FBD] 638NetBSD 1.4.3 2000-11-25 [NBD] (patch release) 639BSD/OS 4.2 2000-11-29 [BSDI] 640OpenBSD 2.8 2000-12-01 [OBD] 641NetBSD 1.5 2000-12-06 [NBD] 642Mac OS X 10.0 2001-03-24 [APL] 643FreeBSD 4.3 2001-04-20 [FBD] 644OpenBSD 2.9 2001-06-01 [OBD] 645NetBSD 1.5.1 2001-07-11 [NBD] (patch release) 646NetBSD 1.5.2 2001-09-13 [NBD] (patch release) 647FreeBSD 4.4 2001-09-18 [FBD] 648Mac OS X 10.1 2001-09-29 [APL] 649OpenBSD 3.0 2001-12-01 [OBD] 650FreeBSD 4.5 2002-01-29 [FBD] 651BSD/OS 4.3 2002-03-14 [WRS] 652OpenBSD 3.1 2002-05-19 [OBD] 653FreeBSD 4.6 2002-06-15 [FBD] 654NetBSD 1.5.3 2002-07-22 [NBD] (patch release) 655FreeBSD 4.6.2 2002-08-15 [FBD] (patch release) 656Mac OS X 10.2 2002-08-23 [APL] 657NetBSD 1.6 2002-09-14 [NBD] 658FreeBSD 4.7 2002-10-08 [FBD] 659OpenBSD 3.2 2002-11-01 [OBD] 660FreeBSD 5.0 2003-01-17 [FBD] 661 FreeBSD 5.0 is a separate branch off of 662 -current, similar to 3.0. 663FreeBSD 4.8 2003-04-03 [FBD] 664NetBSD 1.6.1 2003-04-21 [NBD] (patch release) 665OpenBSD 3.3 2003-05-01 [OBD] 666BSD/OS 5.0 2003-05-?? [WRS] 667FreeBSD 5.1 2003-06-09 [FBD] 668Mac OS X 10.3 2003-10-24 [APL] 669FreeBSD 4.9 2003-10-28 [FBD] 670BSD/OS 5.1 ISE 2003-10-?? [WRS] (final version) 671OpenBSD 3.4 2003-11-01 [OBD] 672FreeBSD 5.2 2004-01-12 [FBD] 673FreeBSD 5.2.1 2004-02-22 [FBD] (patch release) 674NetBSD 1.6.2 2004-03-01 [NBD] (patch release) 675OpenBSD 3.5 2004-04-01 [OBD] 676FreeBSD 4.10 2004-05-27 [FBD] 677DragonFly 1.0 2004-07-12 [DFB] 678OpenBSD 3.6 2004-10-29 [OBD] 679FreeBSD 5.3 2004-11-06 [FBD] 680NetBSD 2.0 2004-12-09 [NBD] 681FreeBSD 4.11 2005-01-25 [FBD] 682DragonFly 1.2.0 2005-04-08 [DFB] 683NetBSD 2.0.2 2005-04-14 [NBD] (security/critical release) 684Mac OS X 10.4 2005-04-29 [APL] 685FreeBSD 5.4 2005-05-09 [FBD] 686OpenBSD 3.7 2005-05-19 [OBD] 687NetBSD 2.0.3 2005-10-31 [NBD] (security/critical release) 688OpenBSD 3.8 2005-11-01 [OBD] 689FreeBSD 6.0 2005-11-01 [FBD] 690NetBSD 2.1 2005-11-02 [NBD] 691NetBSD 3.0 2005-12-23 [NBD] 692DragonFly 1.4.0 2006-01-08 [DFB] 693FreeBSD 2.2.9 2006-04-01 [FBD] 694OpenBSD 3.9 2006-05-01 [OBD] 695FreeBSD 6.1 2006-05-08 [FBD] 696FreeBSD 5.5 2006-05-25 [FBD] 697NetBSD 3.0.1 2006-07-24 [NBD] (security/critical release) 698DragonFly 1.6.0 2006-07-24 [DFB] 699OpenBSD 4.0 2006-11-01 [OBD] 700NetBSD 3.0.2 2006-11-04 [NBD] (security/critical release) 701NetBSD 3.1 2006-11-04 [NBD] 702FreeBSD 6.2 2007-01-15 [FBD] 703DragonFly 1.8.0 2007-01-30 [DFB] 704OpenBSD 4.1 2007-05-01 [OBD] 705DragonFly 1.10.0 2007-08-06 [DFB] 706Mac OS X 10.5 2007-10-26 [APL] 707OpenBSD 4.2 2007-11-01 [OBD] 708NetBSD 4.0 2007-12-19 [NBD] 709FreeBSD 6.3 2008-01-18 [FBD] 710DragonFly 1.12.0 2008-02-26 [DFB] 711FreeBSD 7.0 2008-02-27 [FBD] 712OpenBSD 4.3 2008-05-01 [OBD] 713DragonFly 2.0.0 2008-07-21 [DFB] 714OpenBSD 4.4 2008-11-01 [OBD] 715FreeBSD 6.4 2008-11-28 [FBD] 716FreeBSD 7.1 2009-01-04 [FBD] 717DragonFly 2.2.0 2009-02-17 [DFB] 718NetBSD 5.0 2009-04-29 [NBD] 719OpenBSD 4.5 2009-05-01 [OBD] 720FreeBSD 7.2 2009-05-04 [FBD] 721Mac OS X 10.6 2009-06-08 [APL] 722NetBSD 5.0.1 2009-08-02 [NBD] (security/critical release) 723DragonFly 2.4.0 2009-09-16 [DFB] 724OpenBSD 4.6 2009-10-18 [OBD] 725FreeBSD 8.0 2009-11-26 [FBD] 726NetBSD 5.0.2 2010-02-12 [NBD] (security/critical release) 727FreeBSD 7.3 2010-03-23 [FBD] 728DragonFly 2.6.0 2010-03-28 [DFB] 729OpenBSD 4.7 2010-05-19 [OBD] 730FreeBSD 8.1 2010-07-24 [FBD] 731DragonFly 2.8.2 2010-10-30 [DFB] 732OpenBSD 4.8 2010-11-01 [OBD] 733NetBSD 5.1 2010-11-19 [NBD] 734FreeBSD 7.4 2011-02-24 [FBD] 735FreeBSD 8.2 2011-02-24 [FBD] 736DragonFly 2.10.1 2011-04-26 [DFB] 737OpenBSD 4.9 2011-05-01 [OBD] 738Mac OS X 10.7 2011-07-20 [APL] 739OpenBSD 5.0 2011-11-01 [OBD] 740FreeBSD 9.0 2012-01-12 [FBD] 741NetBSD 5.1.2 2012-02-02 [NBD] (security/critical release) 742DragonFly 3.0.1 2012-02-21 [DFB] 743FreeBSD 8.3 2012-04-18 [FBD] 744OpenBSD 5.1 2012-05-01 [OBD] 745Mac OS X 10.8 2012-07-25 [APL] 746NetBSD 6.0 2012-10-17 [NBD] 747OpenBSD 5.2 2012-11-01 [OBD] 748DragonFly 3.2.1 2012-11-02 [DFB] 749NetBSD 5.2 2012-12-03 [NBD] 750NetBSD 6.0.1 2012-12-26 [NBD] (security/critical release) 751FreeBSD 9.1 2012-12-30 [FBD] 752DragonFly 3.4.1 2013-04-29 [DFB] 753OpenBSD 5.3 2013-05-01 [OBD] 754NetBSD 6.0.2 2013-05-18 [NBD] (security/critical release) 755NetBSD 6.1 2013-05-18 [NBD] 756FreeBSD 8.4 2013-06-07 [FBD] 757NetBSD 6.1.1 2013-08-22 [NBD] 758NetBSD 5.1.3 2013-09-29 [NBD] 759NetBSD 5.2.1 2013-09-29 [NBD] 760FreeBSD 9.2 2013-09-30 [FBD] 761NetBSD 6.0.3 2013-09-30 [NBD] 762NetBSD 6.1.2 2013-09-30 [NBD] 763Mac OS X 10.9 2013-10-22 [APL] 764OpenBSD 5.4 2013-11-01 [OBD] 765DragonFly 3.6.0 2013-11-25 [DFB] 766FreeBSD 10.0 2014-01-20 [FBD] 767NetBSD 5.1.4 2014-01-25 [NBD] 768NetBSD 5.2.2 2014-01-25 [NBD] 769NetBSD 6.0.4 2014-01-25 [NBD] 770NetBSD 6.1.3 2014-01-25 [NBD] 771DragonFly 3.6.1 2014-02-22 [DFB] 772DragonFly 3.6.2 2014-04-10 [DFB] 773NetBSD 6.0.5 2014-04-12 [NBD] 774NetBSD 6.1.4 2014-04-12 [NBD] 775OpenBSD 5.5 2014-05-01 [OBD] 776DragonFly 3.8.0 2014-06-04 [DFB] 777DragonFly 3.8.1 2014-06-16 [DFB] 778DragonFly 3.6.3 2014-06-17 [DFB] 779FreeBSD 9.3 2014-07-05 [FBD] 780DragonFly 3.8.2 2014-08-08 [DFB] 781NetBSD 6.0.6 2014-09-22 [NBD] 782NetBSD 6.1.5 2014-09-22 [NBD] 783Mac OS X 10.10 2014-10-16 [APL] 784OpenBSD 5.6 2014-11-01 [OBD] 785FreeBSD 10.1 2014-11-14 [FBD] 786DragonFly 4.0.1 2014-11-25 [DFB] 787DragonFly 4.0.2 2015-01-07 [DFB] 788DragonFly 4.0.3 2015-01-21 [DFB] 789DragonFly 4.0.4 2015-03-09 [DFB] 790DragonFly 4.0.5 2015-03-23 [DFB] 791OpenBSD 5.7 2015-05-01 [OBD] 792DragonFly 4.2.0 2015-06-29 [DFB] 793FreeBSD 10.2 2015-08-13 [FBD] 794NetBSD 7.0 2015-09-25 [NBD] 795OS X 10.11 2015-09-30 [APL] 796OpenBSD 5.8 2015-10-18 [OBD] 797DragonFly 4.4.1 2015-12-07 [DFB] 798OpenBSD 5.9 2016-03-29 [OBD] 799FreeBSD 10.3 2016-04-04 [FBD] 800NetBSD 7.0.1 2016-05-22 [NBD] 801DragonFly 4.6.0 2016-08-02 [DFB] 802OpenBSD 6.0 2016-09-01 [OBD] 803macOS 10.12 2016-09-20 [APL] 804FreeBSD 11.0 2016-10-10 [FBD] 805NetBSD 7.0.2 2016-10-21 [NBD] 806NetBSD 7.1 2017-03-11 [NBD] 807DragonFly 4.8.0 2017-03-27 [DFB] 808OpenBSD 6.1 2017-04-11 [OBD] 809FreeBSD 11.1 2017-07-26 [FBD] 810macOS 10.13 2017-09-25 [APL] 811FreeBSD 10.4 2017-10-03 [FBD] 812OpenBSD 6.2 2017-10-09 [OBD] 813DragonFly 5.0.0 2017-10-16 [DFB] 814DragonFly 5.0.1 2017-11-06 [DFB] 815DragonFly 5.0.2 2017-12-04 [DFB] 816NetBSD 7.1.1 2017-12-22 [NBD] 817NetBSD 7.1.2 2018-03-15 [NBD] 818OpenBSD 6.3 2018-04-02 [OBD] 819DragonFly 5.2.0 2018-04-10 [DFB] 820DragonFly 5.2.1 2018-05-20 [DFB] 821DragonFly 5.2.2 2018-06-18 [DFB] 822FreeBSD 11.2 2018-06-27 [FBD] 823NetBSD 8.0 2018-07-17 [NBD] 824NetBSD 7.2 2018-08-29 [NBD] 825macOS 10.14 2018-09-24 [APL] 826OpenBSD 6.4 2018-10-18 [OBD] 827DragonFly 5.4.0 2018-12-03 [DFB] 828FreeBSD 12.0 2018-12-11 [FBD] 829DragonFly 5.4.1 2018-12-24 [DFB] 830OpenBSD 6.5 2019-05-01 [OBD] 831NetBSD 8.1 2019-06-04 [NBD] 832DragonFly 5.6 2019-06-17 [DFB] 833DragonFly 5.6.1 2019-06-19 [DFB] 834FreeBSD 11.3 2019-07-09 [FBD] 835DragonFly 5.6.2 2019-08-11 [DFB] 836OpenBSD 6.6 2019-10-17 [OBD] 837macOS 10.15 2019-10-07 [APL] 838macOS 10.15.1 2019-10-29 [APL] (security/critical release) 839FreeBSD 12.1 2019-11-04 [FBD] 840NetBSD 9.0 2020-02-14 [NBD] 841DragonFly 5.8 2020-03-03 [DFB] 842DragonFly 5.6.3 2020-03-11 [DFB] 843NetBSD 8.2 2020-03-31 [NBD] 844DragonFly 5.8.1 2020-05-06 [DFB] 845OpenBSD 6.7 2020-05-19 [OBD] 846FreeBSD 11.4 2020-06-16 [FBD] 847DragonFly 5.8.2 2020-09-23 [DFB] 848DragonFly 5.8.3 2020-09-24 [DFB] 849OpenBSD 6.8 2020-10-18 [OBD] 850NetBSD 9.1 2020-10-18 [NBD] 851FreeBSD 12.2 2020-10-27 [FBD] 852macOS 11 2020-11-19 [APL] 853FreeBSD 13.0 2021-04-13 [FBD] 854OpenBSD 6.9 2021-05-01 [OBD] 855DragonFly 6.0 2021-05-08 [DFB] 856NetBSD 9.2 2021-05-12 [NBD] 857DragonFly 6.0.1 2021-10-12 [DFB] 858OpenBSD 7.0 2021-10-14 [OBD] 859macOS 12 2021-10-25 [APL] 860FreeBSD 12.3 2021-12-01 [FBD] 861DragonFly 6.2.1 2022-01-09 [DFB] 862OpenBSD 7.1 2022-04-21 [OBD] 863FreeBSD 13.1 2022-05-17 [FBD] 864DragonFly 6.2.2 2022-06-09 [DFB] 865NetBSD 9.3 2022-08-04 [NBD] 866OpenBSD 7.2 2022-10-20 [OBD] 867macOS 13 2022-10-24 [APL] 868FreeBSD 12.4 2022-12-05 [FBD] 869DragonFly 6.4 2022-12-30 [DFB] 870 871Bibliography 872------------------------ 873 874Leffler, Samuel J., Marshall Kirk McKusick, Michael J Karels and John 875Quarterman. The Design and Implementation of the 4.3BSD UNIX Operating 876System. Reading, Mass. Addison-Wesley, 1989. ISBN 0-201-06196-1 877 878Salus, Peter H. A quarter century of UNIX. Addison-Wesley Publishing 879Company, Inc., 1994. ISBN 0-201-54777-5 880 881McKusick, Marshall Kirk, Keith Bostic, Michael J Karels, and John 882Quarterman. The Design and Implementation of the 4.4BSD Operating 883System. Reading, Mass. Addison-Wesley, 1996. ISBN 0-201-54979-4 884 885McKusick, Marshall Kirk, George Neville-Neil. The Design and 886Implementation of the FreeBSD Operating System. 887Addison-Wesley Professional, Published: Aug 2, 2004. ISBN 0-201-70245-2 888 889McKusick, Marshall Kirk, George Neville-Neil, Robert Watson. The 890Design and Implementation of the FreeBSD Operating System, 2nd Edition. 891Pearson Education, Inc., 2014. ISBN 0-321-96897-2 892 893Doug McIlroy. Research Unix Reader. 894 895Michael G. Brown. The Role of BSD in the Development of Unix. 896Presented to the Tasmanian Unix Special Interest Group of the 897Australian Computer Society, Hobart, August 1993. 898 899Peter H. Salus. Unix at 25. Byte Magazine, October 1994. 900URL: https://web.archive.org/web/20081230094857/http://www.byte.com/art/9410/sec8/art3.htm 901 902Andreas Klemm, Lars Köller. If you're going to San Francisco ... 903Die freien BSD-Varianten von Unix. c't April 1997, page 368ff. 904 905BSD Release Announcements collection. 906URL: https://www.FreeBSD.org/releases/ 907 908BSD Hypertext Man Pages 909URL: https://www.FreeBSD.org/cgi/man.cgi 910 911UNIX history graphing project 912URL: https://minnie.tuhs.org/Unix_History/index.html 913 914UNIX history 915URL: https://www.levenez.com/unix/ 916 917James Howard: The BSD Family Tree 918URL: https://web.archive.org/web/20090427195917/http://ezine.daemonnews.org/200104/bsd_family.html 919("what are the differences between FreeBSD, NetBSD, and OpenBSD?") 920 921 922Acknowledgments 923--------------- 924 925Josh Gilliam for suggestions, bug fixes, and finding very old 926original BSD announcements from Usenet or tapes. 927 928Steven M. Schultz for providing 2.8BSD, 2.10BSD, 2.11BSD manual pages. 929 930-- 931Copyright (c) 1997-2012 Wolfram Schneider <wosch@FreeBSD.ORG> 932URL: https://cgit.freebsd.org/src/tree/share/misc/bsd-family-tree 933 934$FreeBSD$ 935