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 | | | | OpenBSD 7.3 | 447 | FreeBSD | | | | 448 | 13.2 | | | | 449 | macOS | | | 450 | 14 | | | 451 | | | | | 452FreeBSD 14 -current | NetBSD -current OpenBSD -current DragonFly -current 453 | | | | | 454 v v v v v 455 456Time 457---------------- 458 459Time tolerance +/- 6 months, depending on which book/article you read; if it 460was the announcement in Usenet or if it was available as tape. 461 462[44B] McKusick, Marshall Kirk, Keith Bostic, Michael J Karels, 463 and John Quarterman. The Design and Implementation of 464 the 4.4BSD Operating System. 465[APL] Apple website [https://www.apple.com/macosx/] 466[BSDI] Berkeley Software Design, Inc. 467[DFB] DragonFlyBSD Project, The. 468[DOC] README, COPYRIGHT on tape. 469[FBD] FreeBSD Project, The. 470[KB] Keith Bostic. BSD2.10 available from Usenix. comp.unix.sources, 471 Volume 11, Info 4, April, 1987. 472[KKK] Mike Karels, Kirk McKusick, and Keith Bostic. tahoe announcement. 473 comp.bugs.4bsd.ucb-fixes, June 15, 1988. 474[KSJ] Michael J. Karels, Carl F. Smith, and William F. Jolitz. 475 Changes in the Kernel in 2.9BSD. Second Berkeley Software 476 Distribution UNIX Version 2.9, July, 1983. 477[NBD] NetBSD Project, The. 478[OBD] OpenBSD Project, The. 479[QCU] Salus, Peter H. A quarter century of UNIX. 480[SMS] Steven M. Schultz. 2.11BSD, UNIX for the PDP-11. 481[TUHS] The Unix Historical Society. https://minnie.tuhs.org/Unix_History/. 482[USE] Usenet announcement. 483[WRS] Wind River Systems, Inc. 484[dmr] Dennis Ritchie, via E-Mail 485 486Multics 1965 487UNIX Summer 1969 488 DEC PDP-7 489First Edition 1971-11-03 [QCU] 490 DEC PDP-11/20, Assembler 491Second Edition 1972-06-12 [QCU] 492 10 UNIX installations 493Third Edition 1973-02-xx [QCU] 494 Pipes, 16 installations 495Fourth Edition 1973-11-xx [QCU] 496 rewriting in C effected, 497 above 30 installations 498Fifth Edition 1974-06-xx [QCU] 499 above 50 installations 500Sixth Edition 1975-05-xx [QCU] 501 port to DEC Vax 502Seventh Edition 1979-01-xx [QCU] 1979-01-10 [TUHS] 503 first portable UNIX 504Eighth Edition 1985-02-xx [QCU] 505 VAX 11/750, VAX 11/780 [dmr] 506 descended from 4.1c BSD [dmr] 507 descended from 4.1 BSD [44B] 508 scooping-out and replacement of the character-device 509 and networking part by the streams mechanism 510 511Ninth Edition 1986-09-xx [QCU] 512Tenth Edition 1989-10-xx [QCU] 513 5141BSD late 1977 515 1978-01-16 [DOC] 516 1978-03-09 [QCU] 517 PDP-11, Pascal, ex(1) 518 30 free copies of 1BSD sent out 519 35 tapes sold for 50 USD [QCU] 5202BSD mid 1978 [QCU] 1979-05-10 [TUHS] 521 75 2BSD tapes shipped 5222.79BSD 1980-04-xx [TUHS] 5232.8BSD 1981-07-xx [KSJ] 524 First 2BSD with bootable V7 kernel plus 525 community fixes. 5262.8.1BSD 1982-01-xx [QCU] 527 set of performance improvements 5282.9BSD 1983-07-xx [KSJ] 5292.9.1BSD 1983-11-xx [TUHS] 5302.9BSD-Seismo 1985-08-xx [SMS] 5312.10BSD 1987-04-xx [KKK] 5322.10.1BSD 1989-01-xx [SMS] 5332.11BSD 1991-03-14 [SMS] 5342.11BSD rev #430 1999-12-13 [SMS] 535 53632V 1978-1[01]-xx [QCU] 1979-03-26 [TUHS] 5373BSD late 1979 [QCU] March 1980 [TUHS] 538 virtual memory, page replacement, 539 demand paging 5404.0BSD 1980-10-xx 5414.1BSD 1981-07-08 [DOC] 5424.1aBSD 1982-04-xx 543 alpha release, 100 sites, networking [44B] 5444.1bBSD internal release, fast filesystem [44B] 5454.1cBSD late 1982 546 beta release, IPC [44B] 5474.2BSD 1983-09-xx [QCU] 548 1983-08-03 [DOC] 5494.3BSD 1986-06-xx [QCU] 550 1986-04-05 [KB], [DOC] 5514.3BSD Tahoe 1988-06-15 [QCU], [DOC] 5524.3BSD NET/1 1988-11-xx [QCU] 553 1989-01-01 [DOC] 5544.3BSD Reno 1990-06-29 [QCU], [DOC] 5554.3BSD NET/2 1991-06-28 [QCU], [DOC] 556 557BSD/386 ALPHA 1991-12-xx [BSDI] 558 first code released to people outside BSDI 559386BSD 0.0 1992-02-xx [DOC] 560BSD/386 0.3.1 1992-04-xx [BSDI] first ext. beta; B customers 561BSD/386 0.3.3 1992-06-xx [BSDI] first CDROM version 562386BSD 0.1 1992-07-28 [DOC] 5634.4BSD Alpha 1992-07-07 564BSD/386 0.9.3 1992-10-xx [BSDI] 565 first external gamma; G customers 566BSD/386 0.9.4 1992-12-xx [BSDI] 567 would have been 1.0 except for request 568 for preliminary injunction 569BSD/386 1.0 1993-03-xx [BSDI] 570 injunction denied; first official release 571NetBSD 0.8 1993-04-20 [NBD] 5724.4BSD 1993-06-01 [USE] 573NetBSD 0.9 1993-08-23 [NBD] 574FreeBSD 1.0 1993-11-01 [FBD] 575FreeBSD 1.0.2 1993-11-14 [FBD] 576 supersedes 1.0 13 days after release. 577BSD/386 1.1 1994-02-xx [BSDI] 5784.4BSD Lite 1994-03-01 [USE] 579FreeBSD 1.1 1994-05-07 [FBD] 580FreeBSD 1.1.5 1994-06-30 [FBD] 581FreeBSD 1.1.5.1 1994-07-05 [FBD] 582 supersedes 1.1.5 5 days after release. 583NetBSD 1.0 1994-10-26 [NBD] 584386BSD 1.0 1994-11-12 [USE] 585FreeBSD 2.0 1994-11-23 [FBD] 586BSD/OS 2.0 1995-01-xx [BSDI] 4.4 lite based 587FreeBSD 2.0.5 1995-06-10 [FBD] 588BSD/OS 2.0.1 1995-06-xx [BSDI] 5894.4BSD Lite Release 2 1995-06-xx [44B] 590 the true final distribution from the CSRG 591FreeBSD 2.1.0 1995-11-19 [FBD] 592NetBSD 1.1 1995-11-26 [NBD] 593BSD/OS 2.1 1996-01-xx [BSDI] 594FreeBSD 2.1.5 1996-07-14 [FBD] 595NetBSD 1.2 1996-10-04 [NBD] 596OpenBSD 2.0 1996-10-18 [OBD] 597FreeBSD 2.1.6 1996-11-16 [FBD] 598FreeBSD 2.1.6.1 1996-11-25 [FBD] (sendmail security release) 599Rhapsody 1997-xx-xx 600FreeBSD 2.1.7 1997-02-20 [FBD] 601BSD/OS 3.0 1997-02-xx [BSDI] 4.4 lite2 based 602FreeBSD 2.2.0 1997-03-16 [FBD] 603FreeBSD 2.2.1 1997-03-25 [FBD] 604FreeBSD 2.2.2 1997-05-16 [FBD] 605NetBSD 1.2.1 1997-05-20 [NBD] (patch release) 606OpenBSD 2.1 1997-06-01 [OBD] 607FreeBSD 2.2.5 1997-10-22 [FBD] 608OpenBSD 2.2 1997-12-01 [OBD] 609NetBSD 1.3 1998-01-04 [NBD] 610FreeBSD 2.2.6 1998-03-25 [FBD] 611NetBSD 1.3.1 1998-03-09 [NBD] (patch release) 612BSD/OS 3.1 1998-03-xx [BSDI] 613OpenBSD 2.3 1998-05-19 [OBD] 614NetBSD 1.3.2 1998-05-29 [NBD] (patch release) 615FreeBSD 2.2.7 1998-07-22 [FBD] 616BSD/OS 4.0 1998-08-xx [BSDI] 617 2-lock MP support, ELF executables 618FreeBSD 3.0 1998-10-16 [FBD] 619 FreeBSD-3.0 is a snapshot from -current, 620 while 3.1 and 3.2 are from 3.x-stable which 621 was branched quite some time after 3.0-release 622FreeBSD 2.2.8 1998-11-29 [FBD] 623OpenBSD 2.4 1998-12-01 [OBD] 624NetBSD 1.3.3 1998-12-23 [NBD] (patch release) 625FreeBSD 3.1 1999-02-15 [FBD] 626BSD/OS 4.0.1 1999-03-xx [BSDI] 627NetBSD 1.4 1999-05-12 [NBD] 628FreeBSD 3.2 1999-05-17 [FBD] 629OpenBSD 2.5 1999-05-19 [OBD] 630NetBSD 1.4.1 1999-08-26 [NBD] (patch release) 631FreeBSD 3.3 1999-09-17 [FBD] 632OpenBSD 2.6 1999-12-01 [OBD] 633FreeBSD 3.4 1999-12-20 [FBD] 634BSD/OS 4.1 1999-12-xx [BSDI] 635FreeBSD 4.0 2000-03-13 [FBD] 636NetBSD 1.4.2 2000-03-19 [NBD] (patch release) 637OpenBSD 2.7 2000-06-15 [OBD] 638FreeBSD 3.5 2000-06-24 [FBD] 639FreeBSD 4.1 2000-07-27 [FBD] 640FreeBSD 3.5.1 2000-07-28 [FBD] 641FreeBSD 4.1.1 2000-09-25 [FBD] (a network-only patch release) 642FreeBSD 4.2 2000-11-21 [FBD] 643NetBSD 1.4.3 2000-11-25 [NBD] (patch release) 644BSD/OS 4.2 2000-11-29 [BSDI] 645OpenBSD 2.8 2000-12-01 [OBD] 646NetBSD 1.5 2000-12-06 [NBD] 647Mac OS X 10.0 2001-03-24 [APL] 648FreeBSD 4.3 2001-04-20 [FBD] 649OpenBSD 2.9 2001-06-01 [OBD] 650NetBSD 1.5.1 2001-07-11 [NBD] (patch release) 651NetBSD 1.5.2 2001-09-13 [NBD] (patch release) 652FreeBSD 4.4 2001-09-18 [FBD] 653Mac OS X 10.1 2001-09-29 [APL] 654OpenBSD 3.0 2001-12-01 [OBD] 655FreeBSD 4.5 2002-01-29 [FBD] 656BSD/OS 4.3 2002-03-14 [WRS] 657OpenBSD 3.1 2002-05-19 [OBD] 658FreeBSD 4.6 2002-06-15 [FBD] 659NetBSD 1.5.3 2002-07-22 [NBD] (patch release) 660FreeBSD 4.6.2 2002-08-15 [FBD] (patch release) 661Mac OS X 10.2 2002-08-23 [APL] 662NetBSD 1.6 2002-09-14 [NBD] 663FreeBSD 4.7 2002-10-08 [FBD] 664OpenBSD 3.2 2002-11-01 [OBD] 665FreeBSD 5.0 2003-01-17 [FBD] 666 FreeBSD 5.0 is a separate branch off of 667 -current, similar to 3.0. 668FreeBSD 4.8 2003-04-03 [FBD] 669NetBSD 1.6.1 2003-04-21 [NBD] (patch release) 670OpenBSD 3.3 2003-05-01 [OBD] 671BSD/OS 5.0 2003-05-?? [WRS] 672FreeBSD 5.1 2003-06-09 [FBD] 673Mac OS X 10.3 2003-10-24 [APL] 674FreeBSD 4.9 2003-10-28 [FBD] 675BSD/OS 5.1 ISE 2003-10-?? [WRS] (final version) 676OpenBSD 3.4 2003-11-01 [OBD] 677FreeBSD 5.2 2004-01-12 [FBD] 678FreeBSD 5.2.1 2004-02-22 [FBD] (patch release) 679NetBSD 1.6.2 2004-03-01 [NBD] (patch release) 680OpenBSD 3.5 2004-04-01 [OBD] 681FreeBSD 4.10 2004-05-27 [FBD] 682DragonFly 1.0 2004-07-12 [DFB] 683OpenBSD 3.6 2004-10-29 [OBD] 684FreeBSD 5.3 2004-11-06 [FBD] 685NetBSD 2.0 2004-12-09 [NBD] 686FreeBSD 4.11 2005-01-25 [FBD] 687DragonFly 1.2.0 2005-04-08 [DFB] 688NetBSD 2.0.2 2005-04-14 [NBD] (security/critical release) 689Mac OS X 10.4 2005-04-29 [APL] 690FreeBSD 5.4 2005-05-09 [FBD] 691OpenBSD 3.7 2005-05-19 [OBD] 692NetBSD 2.0.3 2005-10-31 [NBD] (security/critical release) 693OpenBSD 3.8 2005-11-01 [OBD] 694FreeBSD 6.0 2005-11-01 [FBD] 695NetBSD 2.1 2005-11-02 [NBD] 696NetBSD 3.0 2005-12-23 [NBD] 697DragonFly 1.4.0 2006-01-08 [DFB] 698FreeBSD 2.2.9 2006-04-01 [FBD] 699OpenBSD 3.9 2006-05-01 [OBD] 700FreeBSD 6.1 2006-05-08 [FBD] 701FreeBSD 5.5 2006-05-25 [FBD] 702NetBSD 3.0.1 2006-07-24 [NBD] (security/critical release) 703DragonFly 1.6.0 2006-07-24 [DFB] 704OpenBSD 4.0 2006-11-01 [OBD] 705NetBSD 3.0.2 2006-11-04 [NBD] (security/critical release) 706NetBSD 3.1 2006-11-04 [NBD] 707FreeBSD 6.2 2007-01-15 [FBD] 708DragonFly 1.8.0 2007-01-30 [DFB] 709OpenBSD 4.1 2007-05-01 [OBD] 710DragonFly 1.10.0 2007-08-06 [DFB] 711Mac OS X 10.5 2007-10-26 [APL] 712OpenBSD 4.2 2007-11-01 [OBD] 713NetBSD 4.0 2007-12-19 [NBD] 714FreeBSD 6.3 2008-01-18 [FBD] 715DragonFly 1.12.0 2008-02-26 [DFB] 716FreeBSD 7.0 2008-02-27 [FBD] 717OpenBSD 4.3 2008-05-01 [OBD] 718DragonFly 2.0.0 2008-07-21 [DFB] 719OpenBSD 4.4 2008-11-01 [OBD] 720FreeBSD 6.4 2008-11-28 [FBD] 721FreeBSD 7.1 2009-01-04 [FBD] 722DragonFly 2.2.0 2009-02-17 [DFB] 723NetBSD 5.0 2009-04-29 [NBD] 724OpenBSD 4.5 2009-05-01 [OBD] 725FreeBSD 7.2 2009-05-04 [FBD] 726Mac OS X 10.6 2009-06-08 [APL] 727NetBSD 5.0.1 2009-08-02 [NBD] (security/critical release) 728DragonFly 2.4.0 2009-09-16 [DFB] 729OpenBSD 4.6 2009-10-18 [OBD] 730FreeBSD 8.0 2009-11-26 [FBD] 731NetBSD 5.0.2 2010-02-12 [NBD] (security/critical release) 732FreeBSD 7.3 2010-03-23 [FBD] 733DragonFly 2.6.0 2010-03-28 [DFB] 734OpenBSD 4.7 2010-05-19 [OBD] 735FreeBSD 8.1 2010-07-24 [FBD] 736DragonFly 2.8.2 2010-10-30 [DFB] 737OpenBSD 4.8 2010-11-01 [OBD] 738NetBSD 5.1 2010-11-19 [NBD] 739FreeBSD 7.4 2011-02-24 [FBD] 740FreeBSD 8.2 2011-02-24 [FBD] 741DragonFly 2.10.1 2011-04-26 [DFB] 742OpenBSD 4.9 2011-05-01 [OBD] 743Mac OS X 10.7 2011-07-20 [APL] 744OpenBSD 5.0 2011-11-01 [OBD] 745FreeBSD 9.0 2012-01-12 [FBD] 746NetBSD 5.1.2 2012-02-02 [NBD] (security/critical release) 747DragonFly 3.0.1 2012-02-21 [DFB] 748FreeBSD 8.3 2012-04-18 [FBD] 749OpenBSD 5.1 2012-05-01 [OBD] 750Mac OS X 10.8 2012-07-25 [APL] 751NetBSD 6.0 2012-10-17 [NBD] 752OpenBSD 5.2 2012-11-01 [OBD] 753DragonFly 3.2.1 2012-11-02 [DFB] 754NetBSD 5.2 2012-12-03 [NBD] 755NetBSD 6.0.1 2012-12-26 [NBD] (security/critical release) 756FreeBSD 9.1 2012-12-30 [FBD] 757DragonFly 3.4.1 2013-04-29 [DFB] 758OpenBSD 5.3 2013-05-01 [OBD] 759NetBSD 6.0.2 2013-05-18 [NBD] (security/critical release) 760NetBSD 6.1 2013-05-18 [NBD] 761FreeBSD 8.4 2013-06-07 [FBD] 762NetBSD 6.1.1 2013-08-22 [NBD] 763NetBSD 5.1.3 2013-09-29 [NBD] 764NetBSD 5.2.1 2013-09-29 [NBD] 765FreeBSD 9.2 2013-09-30 [FBD] 766NetBSD 6.0.3 2013-09-30 [NBD] 767NetBSD 6.1.2 2013-09-30 [NBD] 768Mac OS X 10.9 2013-10-22 [APL] 769OpenBSD 5.4 2013-11-01 [OBD] 770DragonFly 3.6.0 2013-11-25 [DFB] 771FreeBSD 10.0 2014-01-20 [FBD] 772NetBSD 5.1.4 2014-01-25 [NBD] 773NetBSD 5.2.2 2014-01-25 [NBD] 774NetBSD 6.0.4 2014-01-25 [NBD] 775NetBSD 6.1.3 2014-01-25 [NBD] 776DragonFly 3.6.1 2014-02-22 [DFB] 777DragonFly 3.6.2 2014-04-10 [DFB] 778NetBSD 6.0.5 2014-04-12 [NBD] 779NetBSD 6.1.4 2014-04-12 [NBD] 780OpenBSD 5.5 2014-05-01 [OBD] 781DragonFly 3.8.0 2014-06-04 [DFB] 782DragonFly 3.8.1 2014-06-16 [DFB] 783DragonFly 3.6.3 2014-06-17 [DFB] 784FreeBSD 9.3 2014-07-05 [FBD] 785DragonFly 3.8.2 2014-08-08 [DFB] 786NetBSD 6.0.6 2014-09-22 [NBD] 787NetBSD 6.1.5 2014-09-22 [NBD] 788Mac OS X 10.10 2014-10-16 [APL] 789OpenBSD 5.6 2014-11-01 [OBD] 790FreeBSD 10.1 2014-11-14 [FBD] 791DragonFly 4.0.1 2014-11-25 [DFB] 792DragonFly 4.0.2 2015-01-07 [DFB] 793DragonFly 4.0.3 2015-01-21 [DFB] 794DragonFly 4.0.4 2015-03-09 [DFB] 795DragonFly 4.0.5 2015-03-23 [DFB] 796OpenBSD 5.7 2015-05-01 [OBD] 797DragonFly 4.2.0 2015-06-29 [DFB] 798FreeBSD 10.2 2015-08-13 [FBD] 799NetBSD 7.0 2015-09-25 [NBD] 800OS X 10.11 2015-09-30 [APL] 801OpenBSD 5.8 2015-10-18 [OBD] 802DragonFly 4.4.1 2015-12-07 [DFB] 803OpenBSD 5.9 2016-03-29 [OBD] 804FreeBSD 10.3 2016-04-04 [FBD] 805NetBSD 7.0.1 2016-05-22 [NBD] 806DragonFly 4.6.0 2016-08-02 [DFB] 807OpenBSD 6.0 2016-09-01 [OBD] 808macOS 10.12 2016-09-20 [APL] 809FreeBSD 11.0 2016-10-10 [FBD] 810NetBSD 7.0.2 2016-10-21 [NBD] 811NetBSD 7.1 2017-03-11 [NBD] 812DragonFly 4.8.0 2017-03-27 [DFB] 813OpenBSD 6.1 2017-04-11 [OBD] 814FreeBSD 11.1 2017-07-26 [FBD] 815macOS 10.13 2017-09-25 [APL] 816FreeBSD 10.4 2017-10-03 [FBD] 817OpenBSD 6.2 2017-10-09 [OBD] 818DragonFly 5.0.0 2017-10-16 [DFB] 819DragonFly 5.0.1 2017-11-06 [DFB] 820DragonFly 5.0.2 2017-12-04 [DFB] 821NetBSD 7.1.1 2017-12-22 [NBD] 822NetBSD 7.1.2 2018-03-15 [NBD] 823OpenBSD 6.3 2018-04-02 [OBD] 824DragonFly 5.2.0 2018-04-10 [DFB] 825DragonFly 5.2.1 2018-05-20 [DFB] 826DragonFly 5.2.2 2018-06-18 [DFB] 827FreeBSD 11.2 2018-06-27 [FBD] 828NetBSD 8.0 2018-07-17 [NBD] 829NetBSD 7.2 2018-08-29 [NBD] 830macOS 10.14 2018-09-24 [APL] 831OpenBSD 6.4 2018-10-18 [OBD] 832DragonFly 5.4.0 2018-12-03 [DFB] 833FreeBSD 12.0 2018-12-11 [FBD] 834DragonFly 5.4.1 2018-12-24 [DFB] 835OpenBSD 6.5 2019-05-01 [OBD] 836NetBSD 8.1 2019-06-04 [NBD] 837DragonFly 5.6 2019-06-17 [DFB] 838DragonFly 5.6.1 2019-06-19 [DFB] 839FreeBSD 11.3 2019-07-09 [FBD] 840DragonFly 5.6.2 2019-08-11 [DFB] 841OpenBSD 6.6 2019-10-17 [OBD] 842macOS 10.15 2019-10-07 [APL] 843macOS 10.15.1 2019-10-29 [APL] (security/critical release) 844FreeBSD 12.1 2019-11-04 [FBD] 845NetBSD 9.0 2020-02-14 [NBD] 846DragonFly 5.8 2020-03-03 [DFB] 847DragonFly 5.6.3 2020-03-11 [DFB] 848NetBSD 8.2 2020-03-31 [NBD] 849DragonFly 5.8.1 2020-05-06 [DFB] 850OpenBSD 6.7 2020-05-19 [OBD] 851FreeBSD 11.4 2020-06-16 [FBD] 852DragonFly 5.8.2 2020-09-23 [DFB] 853DragonFly 5.8.3 2020-09-24 [DFB] 854OpenBSD 6.8 2020-10-18 [OBD] 855NetBSD 9.1 2020-10-18 [NBD] 856FreeBSD 12.2 2020-10-27 [FBD] 857macOS 11 2020-11-19 [APL] 858FreeBSD 13.0 2021-04-13 [FBD] 859OpenBSD 6.9 2021-05-01 [OBD] 860DragonFly 6.0 2021-05-08 [DFB] 861NetBSD 9.2 2021-05-12 [NBD] 862DragonFly 6.0.1 2021-10-12 [DFB] 863OpenBSD 7.0 2021-10-14 [OBD] 864macOS 12 2021-10-25 [APL] 865FreeBSD 12.3 2021-12-01 [FBD] 866DragonFly 6.2.1 2022-01-09 [DFB] 867OpenBSD 7.1 2022-04-21 [OBD] 868FreeBSD 13.1 2022-05-17 [FBD] 869DragonFly 6.2.2 2022-06-09 [DFB] 870NetBSD 9.3 2022-08-04 [NBD] 871OpenBSD 7.2 2022-10-20 [OBD] 872macOS 13 2022-10-24 [APL] 873FreeBSD 12.4 2022-12-05 [FBD] 874DragonFly 6.4 2022-12-30 [DFB] 875OpenBSD 7.3 2023-04-10 [OBD] 876FreeBSD 13.2 2023-04-11 [FBD] 877macOS 14 2023-09-26 [APL] 878 879Bibliography 880------------------------ 881 882Leffler, Samuel J., Marshall Kirk McKusick, Michael J Karels and John 883Quarterman. The Design and Implementation of the 4.3BSD UNIX Operating 884System. Reading, Mass. Addison-Wesley, 1989. ISBN 0-201-06196-1 885 886Salus, Peter H. A quarter century of UNIX. Addison-Wesley Publishing 887Company, Inc., 1994. ISBN 0-201-54777-5 888 889McKusick, Marshall Kirk, Keith Bostic, Michael J Karels, and John 890Quarterman. The Design and Implementation of the 4.4BSD Operating 891System. Reading, Mass. Addison-Wesley, 1996. ISBN 0-201-54979-4 892 893McKusick, Marshall Kirk, George Neville-Neil. The Design and 894Implementation of the FreeBSD Operating System. 895Addison-Wesley Professional, Published: Aug 2, 2004. ISBN 0-201-70245-2 896 897McKusick, Marshall Kirk, George Neville-Neil, Robert Watson. The 898Design and Implementation of the FreeBSD Operating System, 2nd Edition. 899Pearson Education, Inc., 2014. ISBN 0-321-96897-2 900 901Doug McIlroy. Research Unix Reader. 902 903Michael G. Brown. The Role of BSD in the Development of Unix. 904Presented to the Tasmanian Unix Special Interest Group of the 905Australian Computer Society, Hobart, August 1993. 906 907Peter H. Salus. Unix at 25. Byte Magazine, October 1994. 908URL: https://web.archive.org/web/20081230094857/http://www.byte.com/art/9410/sec8/art3.htm 909 910Andreas Klemm, Lars Köller. If you're going to San Francisco ... 911Die freien BSD-Varianten von Unix. c't April 1997, page 368ff. 912 913FreeBSD Release Information 914URL: https://www.FreeBSD.org/releases/ 915 916FreeBSD Manual Pages 917URL: https://man.freebsd.org/cgi/man.cgi 918 919UNIX history graphing project 920URL: https://minnie.tuhs.org/Unix_History/index.html 921 922UNIX history 923URL: https://www.levenez.com/unix/ 924 925James Howard: The BSD Family Tree 926URL: https://web.archive.org/web/20090427195917/http://ezine.daemonnews.org/200104/bsd_family.html 927("what are the differences between FreeBSD, NetBSD, and OpenBSD?") 928 929 930Acknowledgments 931--------------- 932 933Josh Gilliam for suggestions, bug fixes, and finding very old 934original BSD announcements from Usenet or tapes. 935 936Steven M. Schultz for providing 2.8BSD, 2.10BSD, 2.11BSD manual pages. 937 938-- 939Copyright (c) 1997-2023 Wolfram Schneider <wosch@FreeBSD.org> 940URL: https://cgit.freebsd.org/src/tree/share/misc/bsd-family-tree 941