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 | | | | | OpenBSD 7.1 | 436 | FreeBSD | | | | | 437 | 13.1 | | | | | 438 | | | | | DragonFly 6.2.2 439 | | | NetBSD 9.3 | | 440 | | | | | 441FreeBSD 14 -current | NetBSD -current OpenBSD -current DragonFly -current 442 | | | | | 443 v v v v v 444 445Time 446---------------- 447 448Time tolerance +/- 6 months, depending on which book/article you read; if it 449was the announcement in Usenet or if it was available as tape. 450 451[44B] McKusick, Marshall Kirk, Keith Bostic, Michael J Karels, 452 and John Quarterman. The Design and Implementation of 453 the 4.4BSD Operating System. 454[APL] Apple website [https://www.apple.com/macosx/] 455[BSDI] Berkeley Software Design, Inc. 456[DFB] DragonFlyBSD Project, The. 457[DOC] README, COPYRIGHT on tape. 458[FBD] FreeBSD Project, The. 459[KB] Keith Bostic. BSD2.10 available from Usenix. comp.unix.sources, 460 Volume 11, Info 4, April, 1987. 461[KKK] Mike Karels, Kirk McKusick, and Keith Bostic. tahoe announcement. 462 comp.bugs.4bsd.ucb-fixes, June 15, 1988. 463[KSJ] Michael J. Karels, Carl F. Smith, and William F. Jolitz. 464 Changes in the Kernel in 2.9BSD. Second Berkeley Software 465 Distribution UNIX Version 2.9, July, 1983. 466[NBD] NetBSD Project, The. 467[OBD] OpenBSD Project, The. 468[QCU] Salus, Peter H. A quarter century of UNIX. 469[SMS] Steven M. Schultz. 2.11BSD, UNIX for the PDP-11. 470[TUHS] The Unix Historical Society. https://minnie.tuhs.org/Unix_History/. 471[USE] Usenet announcement. 472[WRS] Wind River Systems, Inc. 473[dmr] Dennis Ritchie, via E-Mail 474 475Multics 1965 476UNIX Summer 1969 477 DEC PDP-7 478First Edition 1971-11-03 [QCU] 479 DEC PDP-11/20, Assembler 480Second Edition 1972-06-12 [QCU] 481 10 UNIX installations 482Third Edition 1973-02-xx [QCU] 483 Pipes, 16 installations 484Fourth Edition 1973-11-xx [QCU] 485 rewriting in C effected, 486 above 30 installations 487Fifth Edition 1974-06-xx [QCU] 488 above 50 installations 489Sixth Edition 1975-05-xx [QCU] 490 port to DEC Vax 491Seventh Edition 1979-01-xx [QCU] 1979-01-10 [TUHS] 492 first portable UNIX 493Eighth Edition 1985-02-xx [QCU] 494 VAX 11/750, VAX 11/780 [dmr] 495 descended from 4.1c BSD [dmr] 496 descended from 4.1 BSD [44B] 497 scooping-out and replacement of the character-device 498 and networking part by the streams mechanism 499 500Ninth Edition 1986-09-xx [QCU] 501Tenth Edition 1989-10-xx [QCU] 502 5031BSD late 1977 504 1978-01-16 [DOC] 505 1978-03-09 [QCU] 506 PDP-11, Pascal, ex(1) 507 30 free copies of 1BSD sent out 508 35 tapes sold for 50 USD [QCU] 5092BSD mid 1978 [QCU] 1979-05-10 [TUHS] 510 75 2BSD tapes shipped 5112.79BSD 1980-04-xx [TUHS] 5122.8BSD 1981-07-xx [KSJ] 513 First 2BSD with bootable V7 kernel plus 514 community fixes. 5152.8.1BSD 1982-01-xx [QCU] 516 set of performance improvements 5172.9BSD 1983-07-xx [KSJ] 5182.9.1BSD 1983-11-xx [TUHS] 5192.9BSD-Seismo 1985-08-xx [SMS] 5202.10BSD 1987-04-xx [KKK] 5212.10.1BSD 1989-01-xx [SMS] 5222.11BSD 1991-03-14 [SMS] 5232.11BSD rev #430 1999-12-13 [SMS] 524 52532V 1978-1[01]-xx [QCU] 1979-03-26 [TUHS] 5263BSD late 1979 [QCU] March 1980 [TUHS] 527 virtual memory, page replacement, 528 demand paging 5294.0BSD 1980-10-xx 5304.1BSD 1981-07-08 [DOC] 5314.1aBSD 1982-04-xx 532 alpha release, 100 sites, networking [44B] 5334.1bBSD internal release, fast filesystem [44B] 5344.1cBSD late 1982 535 beta release, IPC [44B] 5364.2BSD 1983-09-xx [QCU] 537 1983-08-03 [DOC] 5384.3BSD 1986-06-xx [QCU] 539 1986-04-05 [KB], [DOC] 5404.3BSD Tahoe 1988-06-15 [QCU], [DOC] 5414.3BSD NET/1 1988-11-xx [QCU] 542 1989-01-01 [DOC] 5434.3BSD Reno 1990-06-29 [QCU], [DOC] 5444.3BSD NET/2 1991-06-28 [QCU], [DOC] 545 546BSD/386 ALPHA 1991-12-xx [BSDI] 547 first code released to people outside BSDI 548386BSD 0.0 1992-02-xx [DOC] 549BSD/386 0.3.1 1992-04-xx [BSDI] first ext. beta; B customers 550BSD/386 0.3.3 1992-06-xx [BSDI] first CDROM version 551386BSD 0.1 1992-07-28 [DOC] 5524.4BSD Alpha 1992-07-07 553BSD/386 0.9.3 1992-10-xx [BSDI] 554 first external gamma; G customers 555BSD/386 0.9.4 1992-12-xx [BSDI] 556 would have been 1.0 except for request 557 for preliminary injunction 558BSD/386 1.0 1993-03-xx [BSDI] 559 injunction denied; first official release 560NetBSD 0.8 1993-04-20 [NBD] 5614.4BSD 1993-06-01 [USE] 562NetBSD 0.9 1993-08-23 [NBD] 563FreeBSD 1.0 1993-11-01 [FBD] 564FreeBSD 1.0.2 1993-11-14 [FBD] 565 supersedes 1.0 13 days after release. 566BSD/386 1.1 1994-02-xx [BSDI] 5674.4BSD Lite 1994-03-01 [USE] 568FreeBSD 1.1 1994-05-07 [FBD] 569FreeBSD 1.1.5 1994-06-30 [FBD] 570FreeBSD 1.1.5.1 1994-07-05 [FBD] 571 supersedes 1.1.5 5 days after release. 572NetBSD 1.0 1994-10-26 [NBD] 573386BSD 1.0 1994-11-12 [USE] 574FreeBSD 2.0 1994-11-23 [FBD] 575BSD/OS 2.0 1995-01-xx [BSDI] 4.4 lite based 576FreeBSD 2.0.5 1995-06-10 [FBD] 577BSD/OS 2.0.1 1995-06-xx [BSDI] 5784.4BSD Lite Release 2 1995-06-xx [44B] 579 the true final distribution from the CSRG 580FreeBSD 2.1.0 1995-11-19 [FBD] 581NetBSD 1.1 1995-11-26 [NBD] 582BSD/OS 2.1 1996-01-xx [BSDI] 583FreeBSD 2.1.5 1996-07-14 [FBD] 584NetBSD 1.2 1996-10-04 [NBD] 585OpenBSD 2.0 1996-10-18 [OBD] 586FreeBSD 2.1.6 1996-11-16 [FBD] 587FreeBSD 2.1.6.1 1996-11-25 [FBD] (sendmail security release) 588Rhapsody 1997-xx-xx 589FreeBSD 2.1.7 1997-02-20 [FBD] 590BSD/OS 3.0 1997-02-xx [BSDI] 4.4 lite2 based 591FreeBSD 2.2.0 1997-03-16 [FBD] 592FreeBSD 2.2.1 1997-03-25 [FBD] 593FreeBSD 2.2.2 1997-05-16 [FBD] 594NetBSD 1.2.1 1997-05-20 [NBD] (patch release) 595OpenBSD 2.1 1997-06-01 [OBD] 596FreeBSD 2.2.5 1997-10-22 [FBD] 597OpenBSD 2.2 1997-12-01 [OBD] 598NetBSD 1.3 1998-01-04 [NBD] 599FreeBSD 2.2.6 1998-03-25 [FBD] 600NetBSD 1.3.1 1998-03-09 [NBD] (patch release) 601BSD/OS 3.1 1998-03-xx [BSDI] 602OpenBSD 2.3 1998-05-19 [OBD] 603NetBSD 1.3.2 1998-05-29 [NBD] (patch release) 604FreeBSD 2.2.7 1998-07-22 [FBD] 605BSD/OS 4.0 1998-08-xx [BSDI] 606 2-lock MP support, ELF executables 607FreeBSD 3.0 1998-10-16 [FBD] 608 FreeBSD-3.0 is a snapshot from -current, 609 while 3.1 and 3.2 are from 3.x-stable which 610 was branched quite some time after 3.0-release 611FreeBSD 2.2.8 1998-11-29 [FBD] 612OpenBSD 2.4 1998-12-01 [OBD] 613NetBSD 1.3.3 1998-12-23 [NBD] (patch release) 614FreeBSD 3.1 1999-02-15 [FBD] 615BSD/OS 4.0.1 1999-03-xx [BSDI] 616NetBSD 1.4 1999-05-12 [NBD] 617FreeBSD 3.2 1999-05-17 [FBD] 618OpenBSD 2.5 1999-05-19 [OBD] 619NetBSD 1.4.1 1999-08-26 [NBD] (patch release) 620FreeBSD 3.3 1999-09-17 [FBD] 621OpenBSD 2.6 1999-12-01 [OBD] 622FreeBSD 3.4 1999-12-20 [FBD] 623BSD/OS 4.1 1999-12-xx [BSDI] 624FreeBSD 4.0 2000-03-13 [FBD] 625NetBSD 1.4.2 2000-03-19 [NBD] (patch release) 626OpenBSD 2.7 2000-06-15 [OBD] 627FreeBSD 3.5 2000-06-24 [FBD] 628FreeBSD 4.1 2000-07-27 [FBD] 629FreeBSD 3.5.1 2000-07-28 [FBD] 630FreeBSD 4.1.1 2000-09-25 [FBD] (a network-only patch release) 631FreeBSD 4.2 2000-11-21 [FBD] 632NetBSD 1.4.3 2000-11-25 [NBD] (patch release) 633BSD/OS 4.2 2000-11-29 [BSDI] 634OpenBSD 2.8 2000-12-01 [OBD] 635NetBSD 1.5 2000-12-06 [NBD] 636Mac OS X 10.0 2001-03-24 [APL] 637FreeBSD 4.3 2001-04-20 [FBD] 638OpenBSD 2.9 2001-06-01 [OBD] 639NetBSD 1.5.1 2001-07-11 [NBD] (patch release) 640NetBSD 1.5.2 2001-09-13 [NBD] (patch release) 641FreeBSD 4.4 2001-09-18 [FBD] 642Mac OS X 10.1 2001-09-29 [APL] 643OpenBSD 3.0 2001-12-01 [OBD] 644FreeBSD 4.5 2002-01-29 [FBD] 645BSD/OS 4.3 2002-03-14 [WRS] 646OpenBSD 3.1 2002-05-19 [OBD] 647FreeBSD 4.6 2002-06-15 [FBD] 648NetBSD 1.5.3 2002-07-22 [NBD] (patch release) 649FreeBSD 4.6.2 2002-08-15 [FBD] (patch release) 650Mac OS X 10.2 2002-08-23 [APL] 651NetBSD 1.6 2002-09-14 [NBD] 652FreeBSD 4.7 2002-10-08 [FBD] 653OpenBSD 3.2 2002-11-01 [OBD] 654FreeBSD 5.0 2003-01-17 [FBD] 655 FreeBSD 5.0 is a separate branch off of 656 -current, similar to 3.0. 657FreeBSD 4.8 2003-04-03 [FBD] 658NetBSD 1.6.1 2003-04-21 [NBD] (patch release) 659OpenBSD 3.3 2003-05-01 [OBD] 660BSD/OS 5.0 2003-05-?? [WRS] 661FreeBSD 5.1 2003-06-09 [FBD] 662Mac OS X 10.3 2003-10-24 [APL] 663FreeBSD 4.9 2003-10-28 [FBD] 664BSD/OS 5.1 ISE 2003-10-?? [WRS] (final version) 665OpenBSD 3.4 2003-11-01 [OBD] 666FreeBSD 5.2 2004-01-12 [FBD] 667FreeBSD 5.2.1 2004-02-22 [FBD] (patch release) 668NetBSD 1.6.2 2004-03-01 [NBD] (patch release) 669OpenBSD 3.5 2004-04-01 [OBD] 670FreeBSD 4.10 2004-05-27 [FBD] 671DragonFly 1.0 2004-07-12 [DFB] 672OpenBSD 3.6 2004-10-29 [OBD] 673FreeBSD 5.3 2004-11-06 [FBD] 674NetBSD 2.0 2004-12-09 [NBD] 675FreeBSD 4.11 2005-01-25 [FBD] 676DragonFly 1.2.0 2005-04-08 [DFB] 677NetBSD 2.0.2 2005-04-14 [NBD] (security/critical release) 678Mac OS X 10.4 2005-04-29 [APL] 679FreeBSD 5.4 2005-05-09 [FBD] 680OpenBSD 3.7 2005-05-19 [OBD] 681NetBSD 2.0.3 2005-10-31 [NBD] (security/critical release) 682OpenBSD 3.8 2005-11-01 [OBD] 683FreeBSD 6.0 2005-11-01 [FBD] 684NetBSD 2.1 2005-11-02 [NBD] 685NetBSD 3.0 2005-12-23 [NBD] 686DragonFly 1.4.0 2006-01-08 [DFB] 687FreeBSD 2.2.9 2006-04-01 [FBD] 688OpenBSD 3.9 2006-05-01 [OBD] 689FreeBSD 6.1 2006-05-08 [FBD] 690FreeBSD 5.5 2006-05-25 [FBD] 691NetBSD 3.0.1 2006-07-24 [NBD] (security/critical release) 692DragonFly 1.6.0 2006-07-24 [DFB] 693OpenBSD 4.0 2006-11-01 [OBD] 694NetBSD 3.0.2 2006-11-04 [NBD] (security/critical release) 695NetBSD 3.1 2006-11-04 [NBD] 696FreeBSD 6.2 2007-01-15 [FBD] 697DragonFly 1.8.0 2007-01-30 [DFB] 698OpenBSD 4.1 2007-05-01 [OBD] 699DragonFly 1.10.0 2007-08-06 [DFB] 700Mac OS X 10.5 2007-10-26 [APL] 701OpenBSD 4.2 2007-11-01 [OBD] 702NetBSD 4.0 2007-12-19 [NBD] 703FreeBSD 6.3 2008-01-18 [FBD] 704DragonFly 1.12.0 2008-02-26 [DFB] 705FreeBSD 7.0 2008-02-27 [FBD] 706OpenBSD 4.3 2008-05-01 [OBD] 707DragonFly 2.0.0 2008-07-21 [DFB] 708OpenBSD 4.4 2008-11-01 [OBD] 709FreeBSD 6.4 2008-11-28 [FBD] 710FreeBSD 7.1 2009-01-04 [FBD] 711DragonFly 2.2.0 2009-02-17 [DFB] 712NetBSD 5.0 2009-04-29 [NBD] 713OpenBSD 4.5 2009-05-01 [OBD] 714FreeBSD 7.2 2009-05-04 [FBD] 715Mac OS X 10.6 2009-06-08 [APL] 716NetBSD 5.0.1 2009-08-02 [NBD] (security/critical release) 717DragonFly 2.4.0 2009-09-16 [DFB] 718OpenBSD 4.6 2009-10-18 [OBD] 719FreeBSD 8.0 2009-11-26 [FBD] 720NetBSD 5.0.2 2010-02-12 [NBD] (security/critical release) 721FreeBSD 7.3 2010-03-23 [FBD] 722DragonFly 2.6.0 2010-03-28 [DFB] 723OpenBSD 4.7 2010-05-19 [OBD] 724FreeBSD 8.1 2010-07-24 [FBD] 725DragonFly 2.8.2 2010-10-30 [DFB] 726OpenBSD 4.8 2010-11-01 [OBD] 727NetBSD 5.1 2010-11-19 [NBD] 728FreeBSD 7.4 2011-02-24 [FBD] 729FreeBSD 8.2 2011-02-24 [FBD] 730DragonFly 2.10.1 2011-04-26 [DFB] 731OpenBSD 4.9 2011-05-01 [OBD] 732Mac OS X 10.7 2011-07-20 [APL] 733OpenBSD 5.0 2011-11-01 [OBD] 734FreeBSD 9.0 2012-01-12 [FBD] 735NetBSD 5.1.2 2012-02-02 [NBD] (security/critical release) 736DragonFly 3.0.1 2012-02-21 [DFB] 737FreeBSD 8.3 2012-04-18 [FBD] 738OpenBSD 5.1 2012-05-01 [OBD] 739Mac OS X 10.8 2012-07-25 [APL] 740NetBSD 6.0 2012-10-17 [NBD] 741OpenBSD 5.2 2012-11-01 [OBD] 742DragonFly 3.2.1 2012-11-02 [DFB] 743NetBSD 5.2 2012-12-03 [NBD] 744NetBSD 6.0.1 2012-12-26 [NBD] (security/critical release) 745FreeBSD 9.1 2012-12-30 [FBD] 746DragonFly 3.4.1 2013-04-29 [DFB] 747OpenBSD 5.3 2013-05-01 [OBD] 748NetBSD 6.0.2 2013-05-18 [NBD] (security/critical release) 749NetBSD 6.1 2013-05-18 [NBD] 750FreeBSD 8.4 2013-06-07 [FBD] 751NetBSD 6.1.1 2013-08-22 [NBD] 752NetBSD 5.1.3 2013-09-29 [NBD] 753NetBSD 5.2.1 2013-09-29 [NBD] 754FreeBSD 9.2 2013-09-30 [FBD] 755NetBSD 6.0.3 2013-09-30 [NBD] 756NetBSD 6.1.2 2013-09-30 [NBD] 757Mac OS X 10.9 2013-10-22 [APL] 758OpenBSD 5.4 2013-11-01 [OBD] 759DragonFly 3.6.0 2013-11-25 [DFB] 760FreeBSD 10.0 2014-01-20 [FBD] 761NetBSD 5.1.4 2014-01-25 [NBD] 762NetBSD 5.2.2 2014-01-25 [NBD] 763NetBSD 6.0.4 2014-01-25 [NBD] 764NetBSD 6.1.3 2014-01-25 [NBD] 765DragonFly 3.6.1 2014-02-22 [DFB] 766DragonFly 3.6.2 2014-04-10 [DFB] 767NetBSD 6.0.5 2014-04-12 [NBD] 768NetBSD 6.1.4 2014-04-12 [NBD] 769OpenBSD 5.5 2014-05-01 [OBD] 770DragonFly 3.8.0 2014-06-04 [DFB] 771DragonFly 3.8.1 2014-06-16 [DFB] 772DragonFly 3.6.3 2014-06-17 [DFB] 773FreeBSD 9.3 2014-07-05 [FBD] 774DragonFly 3.8.2 2014-08-08 [DFB] 775NetBSD 6.0.6 2014-09-22 [NBD] 776NetBSD 6.1.5 2014-09-22 [NBD] 777Mac OS X 10.10 2014-10-16 [APL] 778OpenBSD 5.6 2014-11-01 [OBD] 779FreeBSD 10.1 2014-11-14 [FBD] 780DragonFly 4.0.1 2014-11-25 [DFB] 781DragonFly 4.0.2 2015-01-07 [DFB] 782DragonFly 4.0.3 2015-01-21 [DFB] 783DragonFly 4.0.4 2015-03-09 [DFB] 784DragonFly 4.0.5 2015-03-23 [DFB] 785OpenBSD 5.7 2015-05-01 [OBD] 786DragonFly 4.2.0 2015-06-29 [DFB] 787FreeBSD 10.2 2015-08-13 [FBD] 788NetBSD 7.0 2015-09-25 [NBD] 789OS X 10.11 2015-09-30 [APL] 790OpenBSD 5.8 2015-10-18 [OBD] 791DragonFly 4.4.1 2015-12-07 [DFB] 792OpenBSD 5.9 2016-03-29 [OBD] 793FreeBSD 10.3 2016-04-04 [FBD] 794NetBSD 7.0.1 2016-05-22 [NBD] 795DragonFly 4.6.0 2016-08-02 [DFB] 796OpenBSD 6.0 2016-09-01 [OBD] 797macOS 10.12 2016-09-20 [APL] 798FreeBSD 11.0 2016-10-10 [FBD] 799NetBSD 7.0.2 2016-10-21 [NBD] 800NetBSD 7.1 2017-03-11 [NBD] 801DragonFly 4.8.0 2017-03-27 [DFB] 802OpenBSD 6.1 2017-04-11 [OBD] 803FreeBSD 11.1 2017-07-26 [FBD] 804macOS 10.13 2017-09-25 [APL] 805FreeBSD 10.4 2017-10-03 [FBD] 806OpenBSD 6.2 2017-10-09 [OBD] 807DragonFly 5.0.0 2017-10-16 [DFB] 808DragonFly 5.0.1 2017-11-06 [DFB] 809DragonFly 5.0.2 2017-12-04 [DFB] 810NetBSD 7.1.1 2017-12-22 [NBD] 811NetBSD 7.1.2 2018-03-15 [NBD] 812OpenBSD 6.3 2018-04-02 [OBD] 813DragonFly 5.2.0 2018-04-10 [DFB] 814DragonFly 5.2.1 2018-05-20 [DFB] 815DragonFly 5.2.2 2018-06-18 [DFB] 816FreeBSD 11.2 2018-06-27 [FBD] 817NetBSD 8.0 2018-07-17 [NBD] 818NetBSD 7.2 2018-08-29 [NBD] 819macOS 10.14 2018-09-24 [APL] 820OpenBSD 6.4 2018-10-18 [OBD] 821DragonFly 5.4.0 2018-12-03 [DFB] 822FreeBSD 12.0 2018-12-11 [FBD] 823DragonFly 5.4.1 2018-12-24 [DFB] 824OpenBSD 6.5 2019-05-01 [OBD] 825NetBSD 8.1 2019-06-04 [NBD] 826DragonFly 5.6 2019-06-17 [DFB] 827DragonFly 5.6.1 2019-06-19 [DFB] 828FreeBSD 11.3 2019-07-09 [FBD] 829DragonFly 5.6.2 2019-08-11 [DFB] 830OpenBSD 6.6 2019-10-17 [OBD] 831macOS 10.15 2019-10-07 [APL] 832macOS 10.15.1 2019-10-29 [APL] (security/critical release) 833FreeBSD 12.1 2019-11-04 [FBD] 834NetBSD 9.0 2020-02-14 [NBD] 835DragonFly 5.8 2020-03-03 [DFB] 836DragonFly 5.6.3 2020-03-11 [DFB] 837NetBSD 8.2 2020-03-31 [NBD] 838DragonFly 5.8.1 2020-05-06 [DFB] 839OpenBSD 6.7 2020-05-19 [OBD] 840FreeBSD 11.4 2020-06-16 [FBD] 841DragonFly 5.8.2 2020-09-23 [DFB] 842DragonFly 5.8.3 2020-09-24 [DFB] 843OpenBSD 6.8 2020-10-18 [OBD] 844NetBSD 9.1 2020-10-18 [NBD] 845FreeBSD 12.2 2020-10-27 [FBD] 846macOS 11 2020-11-19 [APL] 847FreeBSD 13.0 2021-04-13 [FBD] 848OpenBSD 6.9 2021-05-01 [OBD] 849DragonFly 6.0 2021-05-08 [DFB] 850NetBSD 9.2 2021-05-12 [NBD] 851OpenBSD 7.0 2021-10-14 [OBD] 852macOS 12 2021-10-25 [APL] 853FreeBSD 12.3 2021-12-01 [FBD] 854DragonFly 6.2.1 2022-01-09 [DFB] 855OpenBSD 7.1 2022-04-21 [OBD] 856FreeBSD 13.1 2022-05-17 [FBD] 857DragonFly 6.2.2 2022-06-09 [DFB] 858NetBSD 9.3 2022-08-04 [NBD] 859 860Bibliography 861------------------------ 862 863Leffler, Samuel J., Marshall Kirk McKusick, Michael J Karels and John 864Quarterman. The Design and Implementation of the 4.3BSD UNIX Operating 865System. Reading, Mass. Addison-Wesley, 1989. ISBN 0-201-06196-1 866 867Salus, Peter H. A quarter century of UNIX. Addison-Wesley Publishing 868Company, Inc., 1994. ISBN 0-201-54777-5 869 870McKusick, Marshall Kirk, Keith Bostic, Michael J Karels, and John 871Quarterman. The Design and Implementation of the 4.4BSD Operating 872System. Reading, Mass. Addison-Wesley, 1996. ISBN 0-201-54979-4 873 874McKusick, Marshall Kirk, George Neville-Neil. The Design and 875Implementation of the FreeBSD Operating System. 876Addison-Wesley Professional, Published: Aug 2, 2004. ISBN 0-201-70245-2 877 878McKusick, Marshall Kirk, George Neville-Neil, Robert Watson. The 879Design and Implementation of the FreeBSD Operating System, 2nd Edition. 880Pearson Education, Inc., 2014. ISBN 0-321-96897-2 881 882Doug McIlroy. Research Unix Reader. 883 884Michael G. Brown. The Role of BSD in the Development of Unix. 885Presented to the Tasmanian Unix Special Interest Group of the 886Australian Computer Society, Hobart, August 1993. 887 888Peter H. Salus. Unix at 25. Byte Magazine, October 1994. 889URL: https://web.archive.org/web/20081230094857/http://www.byte.com/art/9410/sec8/art3.htm 890 891Andreas Klemm, Lars Köller. If you're going to San Francisco ... 892Die freien BSD-Varianten von Unix. c't April 1997, page 368ff. 893 894BSD Release Announcements collection. 895URL: https://www.FreeBSD.org/releases/ 896 897BSD Hypertext Man Pages 898URL: https://www.FreeBSD.org/cgi/man.cgi 899 900UNIX history graphing project 901URL: https://minnie.tuhs.org/Unix_History/index.html 902 903UNIX history 904URL: https://www.levenez.com/unix/ 905 906James Howard: The BSD Family Tree 907URL: https://web.archive.org/web/20090427195917/http://ezine.daemonnews.org/200104/bsd_family.html 908("what are the differences between FreeBSD, NetBSD, and OpenBSD?") 909 910 911Acknowledgments 912--------------- 913 914Josh Gilliam for suggestions, bug fixes, and finding very old 915original BSD announcements from Usenet or tapes. 916 917Steven M. Schultz for providing 2.8BSD, 2.10BSD, 2.11BSD manual pages. 918 919-- 920Copyright (c) 1997-2012 Wolfram Schneider <wosch@FreeBSD.ORG> 921URL: https://cgit.freebsd.org/src/tree/share/misc/bsd-family-tree 922 923$FreeBSD$ 924