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 | v | | 9.0 | | | 410 | FreeBSD | | | | | 411 | 12.2 | | | | DragonFly 5.8 412 | | | | | | | 413 | | | | | | DragonFly 5.6.3 414 | v | | NetBSD | | 415 | | | 8.2 | | 416 | | | | | 417FreeBSD 13 -current | NetBSD -current OpenBSD -current DragonFly -current 418 | | | | | 419 v v v v v 420 421Time 422---------------- 423 424Time tolerance +/- 6 months, depending on which book/article you read; if it 425was the announcement in Usenet or if it was available as tape. 426 427[44B] McKusick, Marshall Kirk, Keith Bostic, Michael J Karels, 428 and John Quarterman. The Design and Implementation of 429 the 4.4BSD Operating System. 430[APL] Apple website [https://www.apple.com/macosx/] 431[BSDI] Berkeley Software Design, Inc. 432[DFB] DragonFlyBSD Project, The. 433[DOC] README, COPYRIGHT on tape. 434[FBD] FreeBSD Project, The. 435[KB] Keith Bostic. BSD2.10 available from Usenix. comp.unix.sources, 436 Volume 11, Info 4, April, 1987. 437[KKK] Mike Karels, Kirk McKusick, and Keith Bostic. tahoe announcement. 438 comp.bugs.4bsd.ucb-fixes, June 15, 1988. 439[KSJ] Michael J. Karels, Carl F. Smith, and William F. Jolitz. 440 Changes in the Kernel in 2.9BSD. Second Berkeley Software 441 Distribution UNIX Version 2.9, July, 1983. 442[NBD] NetBSD Project, The. 443[OBD] OpenBSD Project, The. 444[QCU] Salus, Peter H. A quarter century of UNIX. 445[SMS] Steven M. Schultz. 2.11BSD, UNIX for the PDP-11. 446[TUHS] The Unix Historical Society. http://minnie.tuhs.org/Unix_History/. 447[USE] Usenet announcement. 448[WRS] Wind River Systems, Inc. 449[dmr] Dennis Ritchie, via E-Mail 450 451Multics 1965 452UNIX Summer 1969 453 DEC PDP-7 454First Edition 1971-11-03 [QCU] 455 DEC PDP-11/20, Assembler 456Second Edition 1972-06-12 [QCU] 457 10 UNIX installations 458Third Edition 1973-02-xx [QCU] 459 Pipes, 16 installations 460Fourth Edition 1973-11-xx [QCU] 461 rewriting in C effected, 462 above 30 installations 463Fifth Edition 1974-06-xx [QCU] 464 above 50 installations 465Sixth Edition 1975-05-xx [QCU] 466 port to DEC Vax 467Seventh Edition 1979-01-xx [QCU] 1979-01-10 [TUHS] 468 first portable UNIX 469Eighth Edition 1985-02-xx [QCU] 470 VAX 11/750, VAX 11/780 [dmr] 471 descended from 4.1c BSD [dmr] 472 descended from 4.1 BSD [44B] 473 scooping-out and replacement of the character-device 474 and networking part by the streams mechanism 475 476Ninth Edition 1986-09-xx [QCU] 477Tenth Edition 1989-10-xx [QCU] 478 4791BSD late 1977 480 1978-01-16 [DOC] 481 1978-03-09 [QCU] 482 PDP-11, Pascal, ex(1) 483 30 free copies of 1BSD sent out 484 35 tapes sold for 50 USD [QCU] 4852BSD mid 1978 [QCU] 1979-05-10 [TUHS] 486 75 2BSD tapes shipped 4872.79BSD 1980-04-xx [TUHS] 4882.8BSD 1981-07-xx [KSJ] 489 4902.8.1BSD 1982-01-xx [QCU] 491 set of performance improvements 4922.9BSD 1983-07-xx [KSJ] 4932.9.1BSD 1983-11-xx [TUHS] 4942.9BSD-Seismo 1985-08-xx [SMS] 4952.10BSD 1987-04-xx [KKK] 4962.10.1BSD 1989-01-xx [SMS] 4972.11BSD 1991-03-14 [SMS] 4982.11BSD rev #430 1999-12-13 [SMS] 499 50032V 1978-1[01]-xx [QCU] 1979-03-26 [TUHS] 5013BSD late 1979 [QCU] March 1980 [TUHS] 502 virtual memory, page replacement, 503 demand paging 5044.0BSD 1980-10-xx 5054.1BSD 1981-07-08 [DOC] 5064.1aBSD 1982-04-xx 507 alpha release, 100 sites, networking [44B] 5084.1bBSD internal release, fast filesystem [44B] 5094.1cBSD late 1982 510 beta release, IPC [44B] 5114.2BSD 1983-09-xx [QCU] 512 1983-08-03 [DOC] 5134.3BSD 1986-06-xx [QCU] 514 1986-04-05 [KB], [DOC] 5154.3BSD Tahoe 1988-06-15 [QCU], [DOC] 5164.3BSD NET/1 1988-11-xx [QCU] 517 1989-01-01 [DOC] 5184.3BSD Reno 1990-06-29 [QCU], [DOC] 5194.3BSD NET/2 1991-06-28 [QCU], [DOC] 520 521BSD/386 ALPHA 1991-12-xx [BSDI] 522 first code released to people outside BSDI 523386BSD 0.0 1992-02-xx [DOC] 524BSD/386 0.3.1 1992-04-xx [BSDI] first ext. beta; B customers 525BSD/386 0.3.3 1992-06-xx [BSDI] first CDROM version 526386BSD 0.1 1992-07-28 [DOC] 5274.4BSD Alpha 1992-07-07 528BSD/386 0.9.3 1992-10-xx [BSDI] 529 first external gamma; G customers 530BSD/386 0.9.4 1992-12-xx [BSDI] 531 would have been 1.0 except for request 532 for preliminary injunction 533BSD/386 1.0 1993-03-xx [BSDI] 534 injunction denied; first official release 535NetBSD 0.8 1993-04-20 [NBD] 5364.4BSD 1993-06-01 [USE] 537NetBSD 0.9 1993-08-23 [NBD] 538FreeBSD 1.0 1993-11-01 [FBD] 539FreeBSD 1.0.2 1993-11-14 [FBD] 540 supersedes 1.0 13 days after release. 541BSD/386 1.1 1994-02-xx [BSDI] 5424.4BSD Lite 1994-03-01 [USE] 543FreeBSD 1.1 1994-05-07 [FBD] 544FreeBSD 1.1.5 1994-06-30 [FBD] 545FreeBSD 1.1.5.1 1994-07-05 [FBD] 546 supersedes 1.1.5 5 days after release. 547NetBSD 1.0 1994-10-26 [NBD] 548386BSD 1.0 1994-11-12 [USE] 549FreeBSD 2.0 1994-11-23 [FBD] 550BSD/OS 2.0 1995-01-xx [BSDI] 4.4 lite based 551FreeBSD 2.0.5 1995-06-10 [FBD] 552BSD/OS 2.0.1 1995-06-xx [BSDI] 5534.4BSD Lite Release 2 1995-06-xx [44B] 554 the true final distribution from the CSRG 555FreeBSD 2.1.0 1995-11-19 [FBD] 556NetBSD 1.1 1995-11-26 [NBD] 557BSD/OS 2.1 1996-01-xx [BSDI] 558FreeBSD 2.1.5 1996-07-14 [FBD] 559NetBSD 1.2 1996-10-04 [NBD] 560OpenBSD 2.0 1996-10-18 [OBD] 561FreeBSD 2.1.6 1996-11-16 [FBD] 562FreeBSD 2.1.6.1 1996-11-25 [FBD] (sendmail security release) 563Rhapsody 1997-xx-xx 564FreeBSD 2.1.7 1997-02-20 [FBD] 565BSD/OS 3.0 1997-02-xx [BSDI] 4.4 lite2 based 566FreeBSD 2.2.0 1997-03-16 [FBD] 567FreeBSD 2.2.1 1997-03-25 [FBD] 568FreeBSD 2.2.2 1997-05-16 [FBD] 569NetBSD 1.2.1 1997-05-20 [NBD] (patch release) 570OpenBSD 2.1 1997-06-01 [OBD] 571FreeBSD 2.2.5 1997-10-22 [FBD] 572OpenBSD 2.2 1997-12-01 [OBD] 573NetBSD 1.3 1998-01-04 [NBD] 574FreeBSD 2.2.6 1998-03-25 [FBD] 575NetBSD 1.3.1 1998-03-09 [NBD] (patch release) 576BSD/OS 3.1 1998-03-xx [BSDI] 577OpenBSD 2.3 1998-05-19 [OBD] 578NetBSD 1.3.2 1998-05-29 [NBD] (patch release) 579FreeBSD 2.2.7 1998-07-22 [FBD] 580BSD/OS 4.0 1998-08-xx [BSDI] 581 2-lock MP support, ELF executables 582FreeBSD 3.0 1998-10-16 [FBD] 583 FreeBSD-3.0 is a snapshot from -current, 584 while 3.1 and 3.2 are from 3.x-stable which 585 was branched quite some time after 3.0-release 586FreeBSD 2.2.8 1998-11-29 [FBD] 587OpenBSD 2.4 1998-12-01 [OBD] 588NetBSD 1.3.3 1998-12-23 [NBD] (patch release) 589FreeBSD 3.1 1999-02-15 [FBD] 590BSD/OS 4.0.1 1999-03-xx [BSDI] 591NetBSD 1.4 1999-05-12 [NBD] 592FreeBSD 3.2 1999-05-17 [FBD] 593OpenBSD 2.5 1999-05-19 [OBD] 594NetBSD 1.4.1 1999-08-26 [NBD] (patch release) 595FreeBSD 3.3 1999-09-17 [FBD] 596OpenBSD 2.6 1999-12-01 [OBD] 597FreeBSD 3.4 1999-12-20 [FBD] 598BSD/OS 4.1 1999-12-xx [BSDI] 599FreeBSD 4.0 2000-03-13 [FBD] 600NetBSD 1.4.2 2000-03-19 [NBD] (patch release) 601OpenBSD 2.7 2000-06-15 [OBD] 602FreeBSD 3.5 2000-06-24 [FBD] 603FreeBSD 4.1 2000-07-27 [FBD] 604FreeBSD 3.5.1 2000-07-28 [FBD] 605FreeBSD 4.1.1 2000-09-25 [FBD] (a network-only patch release) 606FreeBSD 4.2 2000-11-21 [FBD] 607NetBSD 1.4.3 2000-11-25 [NBD] (patch release) 608BSD/OS 4.2 2000-11-29 [BSDI] 609OpenBSD 2.8 2000-12-01 [OBD] 610NetBSD 1.5 2000-12-06 [NBD] 611Mac OS X 10.0 2001-03-24 [APL] 612FreeBSD 4.3 2001-04-20 [FBD] 613OpenBSD 2.9 2001-06-01 [OBD] 614NetBSD 1.5.1 2001-07-11 [NBD] (patch release) 615NetBSD 1.5.2 2001-09-13 [NBD] (patch release) 616FreeBSD 4.4 2001-09-18 [FBD] 617Mac OS X 10.1 2001-09-29 [APL] 618OpenBSD 3.0 2001-12-01 [OBD] 619FreeBSD 4.5 2002-01-29 [FBD] 620BSD/OS 4.3 2002-03-14 [WRS] 621OpenBSD 3.1 2002-05-19 [OBD] 622FreeBSD 4.6 2002-06-15 [FBD] 623NetBSD 1.5.3 2002-07-22 [NBD] (patch release) 624FreeBSD 4.6.2 2002-08-15 [FBD] (patch release) 625Mac OS X 10.2 2002-08-23 [APL] 626NetBSD 1.6 2002-09-14 [NBD] 627FreeBSD 4.7 2002-10-08 [FBD] 628OpenBSD 3.2 2002-11-01 [OBD] 629FreeBSD 5.0 2003-01-17 [FBD] 630 FreeBSD 5.0 is a separate branch off of 631 -current, similar to 3.0. 632FreeBSD 4.8 2003-04-03 [FBD] 633NetBSD 1.6.1 2003-04-21 [NBD] (patch release) 634OpenBSD 3.3 2003-05-01 [OBD] 635BSD/OS 5.0 2003-05-?? [WRS] 636FreeBSD 5.1 2003-06-09 [FBD] 637Mac OS X 10.3 2003-10-24 [APL] 638FreeBSD 4.9 2003-10-28 [FBD] 639BSD/OS 5.1 ISE 2003-10-?? [WRS] (final version) 640OpenBSD 3.4 2003-11-01 [OBD] 641FreeBSD 5.2 2004-01-12 [FBD] 642FreeBSD 5.2.1 2004-02-22 [FBD] (patch release) 643NetBSD 1.6.2 2004-03-01 [NBD] (patch release) 644OpenBSD 3.5 2004-04-01 [OBD] 645FreeBSD 4.10 2004-05-27 [FBD] 646DragonFly 1.0 2004-07-12 [DFB] 647OpenBSD 3.6 2004-10-29 [OBD] 648FreeBSD 5.3 2004-11-06 [FBD] 649NetBSD 2.0 2004-12-09 [NBD] 650FreeBSD 4.11 2005-01-25 [FBD] 651DragonFly 1.2.0 2005-04-08 [DFB] 652NetBSD 2.0.2 2005-04-14 [NBD] (security/critical release) 653Mac OS X 10.4 2005-04-29 [APL] 654FreeBSD 5.4 2005-05-09 [FBD] 655OpenBSD 3.7 2005-05-19 [OBD] 656NetBSD 2.0.3 2005-10-31 [NBD] (security/critical release) 657OpenBSD 3.8 2005-11-01 [OBD] 658FreeBSD 6.0 2005-11-01 [FBD] 659NetBSD 2.1 2005-11-02 [NBD] 660NetBSD 3.0 2005-12-23 [NBD] 661DragonFly 1.4.0 2006-01-08 [DFB] 662FreeBSD 2.2.9 2006-04-01 [FBD] 663OpenBSD 3.9 2006-05-01 [OBD] 664FreeBSD 6.1 2006-05-08 [FBD] 665FreeBSD 5.5 2006-05-25 [FBD] 666NetBSD 3.0.1 2006-07-24 [NBD] (security/critical release) 667DragonFly 1.6.0 2006-07-24 [DFB] 668OpenBSD 4.0 2006-11-01 [OBD] 669NetBSD 3.0.2 2006-11-04 [NBD] (security/critical release) 670NetBSD 3.1 2006-11-04 [NBD] 671FreeBSD 6.2 2007-01-15 [FBD] 672DragonFly 1.8.0 2007-01-30 [DFB] 673OpenBSD 4.1 2007-05-01 [OBD] 674DragonFly 1.10.0 2007-08-06 [DFB] 675Mac OS X 10.5 2007-10-26 [APL] 676OpenBSD 4.2 2007-11-01 [OBD] 677NetBSD 4.0 2007-12-19 [NBD] 678FreeBSD 6.3 2008-01-18 [FBD] 679DragonFly 1.12.0 2008-02-26 [DFB] 680FreeBSD 7.0 2008-02-27 [FBD] 681OpenBSD 4.3 2008-05-01 [OBD] 682DragonFly 2.0.0 2008-07-21 [DFB] 683OpenBSD 4.4 2008-11-01 [OBD] 684FreeBSD 6.4 2008-11-28 [FBD] 685FreeBSD 7.1 2009-01-04 [FBD] 686DragonFly 2.2.0 2009-02-17 [DFB] 687NetBSD 5.0 2009-04-29 [NBD] 688OpenBSD 4.5 2009-05-01 [OBD] 689FreeBSD 7.2 2009-05-04 [FBD] 690Mac OS X 10.6 2009-06-08 [APL] 691NetBSD 5.0.1 2009-08-02 [NBD] (security/critical release) 692DragonFly 2.4.0 2009-09-16 [DFB] 693OpenBSD 4.6 2009-10-18 [OBD] 694FreeBSD 8.0 2009-11-26 [FBD] 695NetBSD 5.0.2 2010-02-12 [NBD] (security/critical release) 696FreeBSD 7.3 2010-03-23 [FBD] 697DragonFly 2.6.0 2010-03-28 [DFB] 698OpenBSD 4.7 2010-05-19 [OBD] 699FreeBSD 8.1 2010-07-24 [FBD] 700DragonFly 2.8.2 2010-10-30 [DFB] 701OpenBSD 4.8 2010-11-01 [OBD] 702NetBSD 5.1 2010-11-19 [NBD] 703FreeBSD 7.4 2011-02-24 [FBD] 704FreeBSD 8.2 2011-02-24 [FBD] 705DragonFly 2.10.1 2011-04-26 [DFB] 706OpenBSD 4.9 2011-05-01 [OBD] 707Mac OS X 10.7 2011-07-20 [APL] 708OpenBSD 5.0 2011-11-01 [OBD] 709FreeBSD 9.0 2012-01-12 [FBD] 710NetBSD 5.1.2 2012-02-02 [NBD] (security/critical release) 711DragonFly 3.0.1 2012-02-21 [DFB] 712FreeBSD 8.3 2012-04-18 [FBD] 713OpenBSD 5.1 2012-05-01 [OBD] 714Mac OS X 10.8 2012-07-25 [APL] 715NetBSD 6.0 2012-10-17 [NBD] 716OpenBSD 5.2 2012-11-01 [OBD] 717DragonFly 3.2.1 2012-11-02 [DFB] 718NetBSD 5.2 2012-12-03 [NBD] 719NetBSD 6.0.1 2012-12-26 [NBD] (security/critical release) 720FreeBSD 9.1 2012-12-30 [FBD] 721DragonFly 3.4.1 2013-04-29 [DFB] 722OpenBSD 5.3 2013-05-01 [OBD] 723NetBSD 6.0.2 2013-05-18 [NBD] (security/critical release) 724NetBSD 6.1 2013-05-18 [NBD] 725FreeBSD 8.4 2013-06-07 [FBD] 726NetBSD 6.1.1 2013-08-22 [NBD] 727NetBSD 5.1.3 2013-09-29 [NBD] 728NetBSD 5.2.1 2013-09-29 [NBD] 729FreeBSD 9.2 2013-09-30 [FBD] 730NetBSD 6.0.3 2013-09-30 [NBD] 731NetBSD 6.1.2 2013-09-30 [NBD] 732Mac OS X 10.9 2013-10-22 [APL] 733OpenBSD 5.4 2013-11-01 [OBD] 734DragonFly 3.6.0 2013-11-25 [DFB] 735FreeBSD 10.0 2014-01-20 [FBD] 736NetBSD 5.1.4 2014-01-25 [NBD] 737NetBSD 5.2.2 2014-01-25 [NBD] 738NetBSD 6.0.4 2014-01-25 [NBD] 739NetBSD 6.1.3 2014-01-25 [NBD] 740DragonFly 3.6.1 2014-02-22 [DFB] 741DragonFly 3.6.2 2014-04-10 [DFB] 742NetBSD 6.0.5 2014-04-12 [NBD] 743NetBSD 6.1.4 2014-04-12 [NBD] 744OpenBSD 5.5 2014-05-01 [OBD] 745DragonFly 3.8.0 2014-06-04 [DFB] 746DragonFly 3.8.1 2014-06-16 [DFB] 747DragonFly 3.6.3 2014-06-17 [DFB] 748FreeBSD 9.3 2014-07-05 [FBD] 749DragonFly 3.8.2 2014-08-08 [DFB] 750NetBSD 6.0.6 2014-09-22 [NBD] 751NetBSD 6.1.5 2014-09-22 [NBD] 752Mac OS X 10.10 2014-10-16 [APL] 753OpenBSD 5.6 2014-11-01 [OBD] 754FreeBSD 10.1 2014-11-14 [FBD] 755DragonFly 4.0.1 2014-11-25 [DFB] 756DragonFly 4.0.2 2015-01-07 [DFB] 757DragonFly 4.0.3 2015-01-21 [DFB] 758DragonFly 4.0.4 2015-03-09 [DFB] 759DragonFly 4.0.5 2015-03-23 [DFB] 760OpenBSD 5.7 2015-05-01 [OBD] 761DragonFly 4.2.0 2015-06-29 [DFB] 762FreeBSD 10.2 2015-08-13 [FBD] 763NetBSD 7.0 2015-09-25 [NBD] 764OS X 10.11 2015-09-30 [APL] 765OpenBSD 5.8 2015-10-18 [OBD] 766DragonFly 4.4.1 2015-12-07 [DFB] 767OpenBSD 5.9 2016-03-29 [OBD] 768FreeBSD 10.3 2016-04-04 [FBD] 769NetBSD 7.0.1 2016-05-22 [NBD] 770DragonFly 4.6.0 2016-08-02 [DFB] 771OpenBSD 6.0 2016-09-01 [OBD] 772macOS 10.12 2016-09-20 [APL] 773FreeBSD 11.0 2016-10-10 [FBD] 774NetBSD 7.0.2 2016-10-21 [NBD] 775NetBSD 7.1 2017-03-11 [NBD] 776DragonFly 4.8.0 2017-03-27 [DFB] 777OpenBSD 6.1 2017-04-11 [OBD] 778FreeBSD 11.1 2017-07-26 [FBD] 779macOS 10.13 2017-09-25 [APL] 780FreeBSD 10.4 2017-10-03 [FBD] 781OpenBSD 6.2 2017-10-09 [OBD] 782DragonFly 5.0.0 2017-10-16 [DFB] 783DragonFly 5.0.1 2017-11-06 [DFB] 784DragonFly 5.0.2 2017-12-04 [DFB] 785NetBSD 7.1.1 2017-12-22 [NBD] 786NetBSD 7.1.2 2018-03-15 [NBD] 787OpenBSD 6.3 2018-04-02 [OBD] 788DragonFly 5.2.0 2018-04-10 [DFB] 789DragonFly 5.2.1 2018-05-20 [DFB] 790DragonFly 5.2.2 2018-06-18 [DFB] 791FreeBSD 11.2 2018-06-27 [FBD] 792NetBSD 8.0 2018-07-17 [NBD] 793NetBSD 7.2 2018-08-29 [NBD] 794macOS 10.14 2018-09-24 [APL] 795OpenBSD 6.4 2018-10-18 [OBD] 796DragonFly 5.4.0 2018-12-03 [DFB] 797FreeBSD 12.0 2018-12-11 [FBD] 798DragonFly 5.4.1 2018-12-24 [DFB] 799OpenBSD 6.5 2019-05-01 [OBD] 800NetBSD 8.1 2019-06-04 [NBD] 801DragonFly 5.6 2019-06-17 [DFB] 802DragonFly 5.6.1 2019-06-19 [DFB] 803FreeBSD 11.3 2019-07-09 [FBD] 804DragonFly 5.6.2 2019-08-11 [DFB] 805OpenBSD 6.6 2019-10-17 [OBD] 806macOS 10.15 2019-10-07 [APL] 807macOS 10.15.1 2019-10-29 [APL] (security/critical release) 808FreeBSD 12.1 2019-11-04 [FBD] 809NetBSD 9.0 2020-02-14 [NBD] 810DragonFly 5.8 2020-03-03 [DFB] 811DragonFly 5.6.3 2020-03-11 [DFB] 812NetBSD 8.2 2020-03-31 [NBD] 813FreeBSD 12.2 2020-10-27 [FBD] 814 815Bibliography 816------------------------ 817 818Leffler, Samuel J., Marshall Kirk McKusick, Michael J Karels and John 819Quarterman. The Design and Implementation of the 4.3BSD UNIX Operating 820System. Reading, Mass. Addison-Wesley, 1989. ISBN 0-201-06196-1 821 822Salus, Peter H. A quarter century of UNIX. Addison-Wesley Publishing 823Company, Inc., 1994. ISBN 0-201-54777-5 824 825McKusick, Marshall Kirk, Keith Bostic, Michael J Karels, and John 826Quarterman. The Design and Implementation of the 4.4BSD Operating 827System. Reading, Mass. Addison-Wesley, 1996. ISBN 0-201-54979-4 828 829McKusick, Marshall Kirk, George Neville-Neil. The Design and 830Implementation of the FreeBSD Operating System. 831Addison-Wesley Professional, Published: Aug 2, 2004. ISBN 0-201-70245-2 832 833McKusick, Marshall Kirk, George Neville-Neil, Robert Watson. The 834Design and Implementation of the FreeBSD Operating System, 2nd Edition. 835Pearson Education, Inc., 2014. ISBN 0-321-96897-2 836 837Doug McIlroy. Research Unix Reader. 838 839Michael G. Brown. The Role of BSD in the Development of Unix. 840Presented to the Tasmanian Unix Special Interest Group of the 841Australian Computer Society, Hobart, August 1993. 842 843Peter H. Salus. Unix at 25. Byte Magazine, October 1994. 844URL: http://www.byte.com/art/9410/sec8/art3.htm 845 846Andreas Klemm, Lars Köller. If you're going to San Francisco ... 847Die freien BSD-Varianten von Unix. c't April 1997, page 368ff. 848 849BSD Release Announcements collection. 850URL: https://www.FreeBSD.org/releases/ 851 852BSD Hypertext Man Pages 853URL: https://www.FreeBSD.org/cgi/man.cgi 854 855UNIX history graphing project 856URL: http://minnie.tuhs.org/Unix_History/index.html 857 858UNIX history 859URL: http://www.levenez.com/unix/ 860 861James Howard: The BSD Family Tree 862URL: http://ezine.daemonnews.org/200104/bsd_family.html 863("what are the differences between FreeBSD, NetBSD, and OpenBSD?") 864 865 866Acknowledgments 867--------------- 868 869Josh Gilliam for suggestions, bug fixes, and finding very old 870original BSD announcements from Usenet or tapes. 871 872Steven M. Schultz for providing 2.8BSD, 2.10BSD, 2.11BSD manual pages. 873 874-- 875Copyright (c) 1997-2012 Wolfram Schneider <wosch@FreeBSD.ORG> 876URL: https://svnweb.freebsd.org/base/head/share/misc/bsd-family-tree 877 878$FreeBSD: head/share/misc/bsd-family-tree 367095 2020-10-28 02:30:44Z lwhsu $ 879