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 | | | | | 446FreeBSD 14 -current | NetBSD -current OpenBSD -current DragonFly -current 447 | | | | | 448 v v v v v 449 450Time 451---------------- 452 453Time tolerance +/- 6 months, depending on which book/article you read; if it 454was the announcement in Usenet or if it was available as tape. 455 456[44B] McKusick, Marshall Kirk, Keith Bostic, Michael J Karels, 457 and John Quarterman. The Design and Implementation of 458 the 4.4BSD Operating System. 459[APL] Apple website [https://www.apple.com/macosx/] 460[BSDI] Berkeley Software Design, Inc. 461[DFB] DragonFlyBSD Project, The. 462[DOC] README, COPYRIGHT on tape. 463[FBD] FreeBSD Project, The. 464[KB] Keith Bostic. BSD2.10 available from Usenix. comp.unix.sources, 465 Volume 11, Info 4, April, 1987. 466[KKK] Mike Karels, Kirk McKusick, and Keith Bostic. tahoe announcement. 467 comp.bugs.4bsd.ucb-fixes, June 15, 1988. 468[KSJ] Michael J. Karels, Carl F. Smith, and William F. Jolitz. 469 Changes in the Kernel in 2.9BSD. Second Berkeley Software 470 Distribution UNIX Version 2.9, July, 1983. 471[NBD] NetBSD Project, The. 472[OBD] OpenBSD Project, The. 473[QCU] Salus, Peter H. A quarter century of UNIX. 474[SMS] Steven M. Schultz. 2.11BSD, UNIX for the PDP-11. 475[TUHS] The Unix Historical Society. https://minnie.tuhs.org/Unix_History/. 476[USE] Usenet announcement. 477[WRS] Wind River Systems, Inc. 478[dmr] Dennis Ritchie, via E-Mail 479 480Multics 1965 481UNIX Summer 1969 482 DEC PDP-7 483First Edition 1971-11-03 [QCU] 484 DEC PDP-11/20, Assembler 485Second Edition 1972-06-12 [QCU] 486 10 UNIX installations 487Third Edition 1973-02-xx [QCU] 488 Pipes, 16 installations 489Fourth Edition 1973-11-xx [QCU] 490 rewriting in C effected, 491 above 30 installations 492Fifth Edition 1974-06-xx [QCU] 493 above 50 installations 494Sixth Edition 1975-05-xx [QCU] 495 port to DEC Vax 496Seventh Edition 1979-01-xx [QCU] 1979-01-10 [TUHS] 497 first portable UNIX 498Eighth Edition 1985-02-xx [QCU] 499 VAX 11/750, VAX 11/780 [dmr] 500 descended from 4.1c BSD [dmr] 501 descended from 4.1 BSD [44B] 502 scooping-out and replacement of the character-device 503 and networking part by the streams mechanism 504 505Ninth Edition 1986-09-xx [QCU] 506Tenth Edition 1989-10-xx [QCU] 507 5081BSD late 1977 509 1978-01-16 [DOC] 510 1978-03-09 [QCU] 511 PDP-11, Pascal, ex(1) 512 30 free copies of 1BSD sent out 513 35 tapes sold for 50 USD [QCU] 5142BSD mid 1978 [QCU] 1979-05-10 [TUHS] 515 75 2BSD tapes shipped 5162.79BSD 1980-04-xx [TUHS] 5172.8BSD 1981-07-xx [KSJ] 518 First 2BSD with bootable V7 kernel plus 519 community fixes. 5202.8.1BSD 1982-01-xx [QCU] 521 set of performance improvements 5222.9BSD 1983-07-xx [KSJ] 5232.9.1BSD 1983-11-xx [TUHS] 5242.9BSD-Seismo 1985-08-xx [SMS] 5252.10BSD 1987-04-xx [KKK] 5262.10.1BSD 1989-01-xx [SMS] 5272.11BSD 1991-03-14 [SMS] 5282.11BSD rev #430 1999-12-13 [SMS] 529 53032V 1978-1[01]-xx [QCU] 1979-03-26 [TUHS] 5313BSD late 1979 [QCU] March 1980 [TUHS] 532 virtual memory, page replacement, 533 demand paging 5344.0BSD 1980-10-xx 5354.1BSD 1981-07-08 [DOC] 5364.1aBSD 1982-04-xx 537 alpha release, 100 sites, networking [44B] 5384.1bBSD internal release, fast filesystem [44B] 5394.1cBSD late 1982 540 beta release, IPC [44B] 5414.2BSD 1983-09-xx [QCU] 542 1983-08-03 [DOC] 5434.3BSD 1986-06-xx [QCU] 544 1986-04-05 [KB], [DOC] 5454.3BSD Tahoe 1988-06-15 [QCU], [DOC] 5464.3BSD NET/1 1988-11-xx [QCU] 547 1989-01-01 [DOC] 5484.3BSD Reno 1990-06-29 [QCU], [DOC] 5494.3BSD NET/2 1991-06-28 [QCU], [DOC] 550 551BSD/386 ALPHA 1991-12-xx [BSDI] 552 first code released to people outside BSDI 553386BSD 0.0 1992-02-xx [DOC] 554BSD/386 0.3.1 1992-04-xx [BSDI] first ext. beta; B customers 555BSD/386 0.3.3 1992-06-xx [BSDI] first CDROM version 556386BSD 0.1 1992-07-28 [DOC] 5574.4BSD Alpha 1992-07-07 558BSD/386 0.9.3 1992-10-xx [BSDI] 559 first external gamma; G customers 560BSD/386 0.9.4 1992-12-xx [BSDI] 561 would have been 1.0 except for request 562 for preliminary injunction 563BSD/386 1.0 1993-03-xx [BSDI] 564 injunction denied; first official release 565NetBSD 0.8 1993-04-20 [NBD] 5664.4BSD 1993-06-01 [USE] 567NetBSD 0.9 1993-08-23 [NBD] 568FreeBSD 1.0 1993-11-01 [FBD] 569FreeBSD 1.0.2 1993-11-14 [FBD] 570 supersedes 1.0 13 days after release. 571BSD/386 1.1 1994-02-xx [BSDI] 5724.4BSD Lite 1994-03-01 [USE] 573FreeBSD 1.1 1994-05-07 [FBD] 574FreeBSD 1.1.5 1994-06-30 [FBD] 575FreeBSD 1.1.5.1 1994-07-05 [FBD] 576 supersedes 1.1.5 5 days after release. 577NetBSD 1.0 1994-10-26 [NBD] 578386BSD 1.0 1994-11-12 [USE] 579FreeBSD 2.0 1994-11-23 [FBD] 580BSD/OS 2.0 1995-01-xx [BSDI] 4.4 lite based 581FreeBSD 2.0.5 1995-06-10 [FBD] 582BSD/OS 2.0.1 1995-06-xx [BSDI] 5834.4BSD Lite Release 2 1995-06-xx [44B] 584 the true final distribution from the CSRG 585FreeBSD 2.1.0 1995-11-19 [FBD] 586NetBSD 1.1 1995-11-26 [NBD] 587BSD/OS 2.1 1996-01-xx [BSDI] 588FreeBSD 2.1.5 1996-07-14 [FBD] 589NetBSD 1.2 1996-10-04 [NBD] 590OpenBSD 2.0 1996-10-18 [OBD] 591FreeBSD 2.1.6 1996-11-16 [FBD] 592FreeBSD 2.1.6.1 1996-11-25 [FBD] (sendmail security release) 593Rhapsody 1997-xx-xx 594FreeBSD 2.1.7 1997-02-20 [FBD] 595BSD/OS 3.0 1997-02-xx [BSDI] 4.4 lite2 based 596FreeBSD 2.2.0 1997-03-16 [FBD] 597FreeBSD 2.2.1 1997-03-25 [FBD] 598FreeBSD 2.2.2 1997-05-16 [FBD] 599NetBSD 1.2.1 1997-05-20 [NBD] (patch release) 600OpenBSD 2.1 1997-06-01 [OBD] 601FreeBSD 2.2.5 1997-10-22 [FBD] 602OpenBSD 2.2 1997-12-01 [OBD] 603NetBSD 1.3 1998-01-04 [NBD] 604FreeBSD 2.2.6 1998-03-25 [FBD] 605NetBSD 1.3.1 1998-03-09 [NBD] (patch release) 606BSD/OS 3.1 1998-03-xx [BSDI] 607OpenBSD 2.3 1998-05-19 [OBD] 608NetBSD 1.3.2 1998-05-29 [NBD] (patch release) 609FreeBSD 2.2.7 1998-07-22 [FBD] 610BSD/OS 4.0 1998-08-xx [BSDI] 611 2-lock MP support, ELF executables 612FreeBSD 3.0 1998-10-16 [FBD] 613 FreeBSD-3.0 is a snapshot from -current, 614 while 3.1 and 3.2 are from 3.x-stable which 615 was branched quite some time after 3.0-release 616FreeBSD 2.2.8 1998-11-29 [FBD] 617OpenBSD 2.4 1998-12-01 [OBD] 618NetBSD 1.3.3 1998-12-23 [NBD] (patch release) 619FreeBSD 3.1 1999-02-15 [FBD] 620BSD/OS 4.0.1 1999-03-xx [BSDI] 621NetBSD 1.4 1999-05-12 [NBD] 622FreeBSD 3.2 1999-05-17 [FBD] 623OpenBSD 2.5 1999-05-19 [OBD] 624NetBSD 1.4.1 1999-08-26 [NBD] (patch release) 625FreeBSD 3.3 1999-09-17 [FBD] 626OpenBSD 2.6 1999-12-01 [OBD] 627FreeBSD 3.4 1999-12-20 [FBD] 628BSD/OS 4.1 1999-12-xx [BSDI] 629FreeBSD 4.0 2000-03-13 [FBD] 630NetBSD 1.4.2 2000-03-19 [NBD] (patch release) 631OpenBSD 2.7 2000-06-15 [OBD] 632FreeBSD 3.5 2000-06-24 [FBD] 633FreeBSD 4.1 2000-07-27 [FBD] 634FreeBSD 3.5.1 2000-07-28 [FBD] 635FreeBSD 4.1.1 2000-09-25 [FBD] (a network-only patch release) 636FreeBSD 4.2 2000-11-21 [FBD] 637NetBSD 1.4.3 2000-11-25 [NBD] (patch release) 638BSD/OS 4.2 2000-11-29 [BSDI] 639OpenBSD 2.8 2000-12-01 [OBD] 640NetBSD 1.5 2000-12-06 [NBD] 641Mac OS X 10.0 2001-03-24 [APL] 642FreeBSD 4.3 2001-04-20 [FBD] 643OpenBSD 2.9 2001-06-01 [OBD] 644NetBSD 1.5.1 2001-07-11 [NBD] (patch release) 645NetBSD 1.5.2 2001-09-13 [NBD] (patch release) 646FreeBSD 4.4 2001-09-18 [FBD] 647Mac OS X 10.1 2001-09-29 [APL] 648OpenBSD 3.0 2001-12-01 [OBD] 649FreeBSD 4.5 2002-01-29 [FBD] 650BSD/OS 4.3 2002-03-14 [WRS] 651OpenBSD 3.1 2002-05-19 [OBD] 652FreeBSD 4.6 2002-06-15 [FBD] 653NetBSD 1.5.3 2002-07-22 [NBD] (patch release) 654FreeBSD 4.6.2 2002-08-15 [FBD] (patch release) 655Mac OS X 10.2 2002-08-23 [APL] 656NetBSD 1.6 2002-09-14 [NBD] 657FreeBSD 4.7 2002-10-08 [FBD] 658OpenBSD 3.2 2002-11-01 [OBD] 659FreeBSD 5.0 2003-01-17 [FBD] 660 FreeBSD 5.0 is a separate branch off of 661 -current, similar to 3.0. 662FreeBSD 4.8 2003-04-03 [FBD] 663NetBSD 1.6.1 2003-04-21 [NBD] (patch release) 664OpenBSD 3.3 2003-05-01 [OBD] 665BSD/OS 5.0 2003-05-?? [WRS] 666FreeBSD 5.1 2003-06-09 [FBD] 667Mac OS X 10.3 2003-10-24 [APL] 668FreeBSD 4.9 2003-10-28 [FBD] 669BSD/OS 5.1 ISE 2003-10-?? [WRS] (final version) 670OpenBSD 3.4 2003-11-01 [OBD] 671FreeBSD 5.2 2004-01-12 [FBD] 672FreeBSD 5.2.1 2004-02-22 [FBD] (patch release) 673NetBSD 1.6.2 2004-03-01 [NBD] (patch release) 674OpenBSD 3.5 2004-04-01 [OBD] 675FreeBSD 4.10 2004-05-27 [FBD] 676DragonFly 1.0 2004-07-12 [DFB] 677OpenBSD 3.6 2004-10-29 [OBD] 678FreeBSD 5.3 2004-11-06 [FBD] 679NetBSD 2.0 2004-12-09 [NBD] 680FreeBSD 4.11 2005-01-25 [FBD] 681DragonFly 1.2.0 2005-04-08 [DFB] 682NetBSD 2.0.2 2005-04-14 [NBD] (security/critical release) 683Mac OS X 10.4 2005-04-29 [APL] 684FreeBSD 5.4 2005-05-09 [FBD] 685OpenBSD 3.7 2005-05-19 [OBD] 686NetBSD 2.0.3 2005-10-31 [NBD] (security/critical release) 687OpenBSD 3.8 2005-11-01 [OBD] 688FreeBSD 6.0 2005-11-01 [FBD] 689NetBSD 2.1 2005-11-02 [NBD] 690NetBSD 3.0 2005-12-23 [NBD] 691DragonFly 1.4.0 2006-01-08 [DFB] 692FreeBSD 2.2.9 2006-04-01 [FBD] 693OpenBSD 3.9 2006-05-01 [OBD] 694FreeBSD 6.1 2006-05-08 [FBD] 695FreeBSD 5.5 2006-05-25 [FBD] 696NetBSD 3.0.1 2006-07-24 [NBD] (security/critical release) 697DragonFly 1.6.0 2006-07-24 [DFB] 698OpenBSD 4.0 2006-11-01 [OBD] 699NetBSD 3.0.2 2006-11-04 [NBD] (security/critical release) 700NetBSD 3.1 2006-11-04 [NBD] 701FreeBSD 6.2 2007-01-15 [FBD] 702DragonFly 1.8.0 2007-01-30 [DFB] 703OpenBSD 4.1 2007-05-01 [OBD] 704DragonFly 1.10.0 2007-08-06 [DFB] 705Mac OS X 10.5 2007-10-26 [APL] 706OpenBSD 4.2 2007-11-01 [OBD] 707NetBSD 4.0 2007-12-19 [NBD] 708FreeBSD 6.3 2008-01-18 [FBD] 709DragonFly 1.12.0 2008-02-26 [DFB] 710FreeBSD 7.0 2008-02-27 [FBD] 711OpenBSD 4.3 2008-05-01 [OBD] 712DragonFly 2.0.0 2008-07-21 [DFB] 713OpenBSD 4.4 2008-11-01 [OBD] 714FreeBSD 6.4 2008-11-28 [FBD] 715FreeBSD 7.1 2009-01-04 [FBD] 716DragonFly 2.2.0 2009-02-17 [DFB] 717NetBSD 5.0 2009-04-29 [NBD] 718OpenBSD 4.5 2009-05-01 [OBD] 719FreeBSD 7.2 2009-05-04 [FBD] 720Mac OS X 10.6 2009-06-08 [APL] 721NetBSD 5.0.1 2009-08-02 [NBD] (security/critical release) 722DragonFly 2.4.0 2009-09-16 [DFB] 723OpenBSD 4.6 2009-10-18 [OBD] 724FreeBSD 8.0 2009-11-26 [FBD] 725NetBSD 5.0.2 2010-02-12 [NBD] (security/critical release) 726FreeBSD 7.3 2010-03-23 [FBD] 727DragonFly 2.6.0 2010-03-28 [DFB] 728OpenBSD 4.7 2010-05-19 [OBD] 729FreeBSD 8.1 2010-07-24 [FBD] 730DragonFly 2.8.2 2010-10-30 [DFB] 731OpenBSD 4.8 2010-11-01 [OBD] 732NetBSD 5.1 2010-11-19 [NBD] 733FreeBSD 7.4 2011-02-24 [FBD] 734FreeBSD 8.2 2011-02-24 [FBD] 735DragonFly 2.10.1 2011-04-26 [DFB] 736OpenBSD 4.9 2011-05-01 [OBD] 737Mac OS X 10.7 2011-07-20 [APL] 738OpenBSD 5.0 2011-11-01 [OBD] 739FreeBSD 9.0 2012-01-12 [FBD] 740NetBSD 5.1.2 2012-02-02 [NBD] (security/critical release) 741DragonFly 3.0.1 2012-02-21 [DFB] 742FreeBSD 8.3 2012-04-18 [FBD] 743OpenBSD 5.1 2012-05-01 [OBD] 744Mac OS X 10.8 2012-07-25 [APL] 745NetBSD 6.0 2012-10-17 [NBD] 746OpenBSD 5.2 2012-11-01 [OBD] 747DragonFly 3.2.1 2012-11-02 [DFB] 748NetBSD 5.2 2012-12-03 [NBD] 749NetBSD 6.0.1 2012-12-26 [NBD] (security/critical release) 750FreeBSD 9.1 2012-12-30 [FBD] 751DragonFly 3.4.1 2013-04-29 [DFB] 752OpenBSD 5.3 2013-05-01 [OBD] 753NetBSD 6.0.2 2013-05-18 [NBD] (security/critical release) 754NetBSD 6.1 2013-05-18 [NBD] 755FreeBSD 8.4 2013-06-07 [FBD] 756NetBSD 6.1.1 2013-08-22 [NBD] 757NetBSD 5.1.3 2013-09-29 [NBD] 758NetBSD 5.2.1 2013-09-29 [NBD] 759FreeBSD 9.2 2013-09-30 [FBD] 760NetBSD 6.0.3 2013-09-30 [NBD] 761NetBSD 6.1.2 2013-09-30 [NBD] 762Mac OS X 10.9 2013-10-22 [APL] 763OpenBSD 5.4 2013-11-01 [OBD] 764DragonFly 3.6.0 2013-11-25 [DFB] 765FreeBSD 10.0 2014-01-20 [FBD] 766NetBSD 5.1.4 2014-01-25 [NBD] 767NetBSD 5.2.2 2014-01-25 [NBD] 768NetBSD 6.0.4 2014-01-25 [NBD] 769NetBSD 6.1.3 2014-01-25 [NBD] 770DragonFly 3.6.1 2014-02-22 [DFB] 771DragonFly 3.6.2 2014-04-10 [DFB] 772NetBSD 6.0.5 2014-04-12 [NBD] 773NetBSD 6.1.4 2014-04-12 [NBD] 774OpenBSD 5.5 2014-05-01 [OBD] 775DragonFly 3.8.0 2014-06-04 [DFB] 776DragonFly 3.8.1 2014-06-16 [DFB] 777DragonFly 3.6.3 2014-06-17 [DFB] 778FreeBSD 9.3 2014-07-05 [FBD] 779DragonFly 3.8.2 2014-08-08 [DFB] 780NetBSD 6.0.6 2014-09-22 [NBD] 781NetBSD 6.1.5 2014-09-22 [NBD] 782Mac OS X 10.10 2014-10-16 [APL] 783OpenBSD 5.6 2014-11-01 [OBD] 784FreeBSD 10.1 2014-11-14 [FBD] 785DragonFly 4.0.1 2014-11-25 [DFB] 786DragonFly 4.0.2 2015-01-07 [DFB] 787DragonFly 4.0.3 2015-01-21 [DFB] 788DragonFly 4.0.4 2015-03-09 [DFB] 789DragonFly 4.0.5 2015-03-23 [DFB] 790OpenBSD 5.7 2015-05-01 [OBD] 791DragonFly 4.2.0 2015-06-29 [DFB] 792FreeBSD 10.2 2015-08-13 [FBD] 793NetBSD 7.0 2015-09-25 [NBD] 794OS X 10.11 2015-09-30 [APL] 795OpenBSD 5.8 2015-10-18 [OBD] 796DragonFly 4.4.1 2015-12-07 [DFB] 797OpenBSD 5.9 2016-03-29 [OBD] 798FreeBSD 10.3 2016-04-04 [FBD] 799NetBSD 7.0.1 2016-05-22 [NBD] 800DragonFly 4.6.0 2016-08-02 [DFB] 801OpenBSD 6.0 2016-09-01 [OBD] 802macOS 10.12 2016-09-20 [APL] 803FreeBSD 11.0 2016-10-10 [FBD] 804NetBSD 7.0.2 2016-10-21 [NBD] 805NetBSD 7.1 2017-03-11 [NBD] 806DragonFly 4.8.0 2017-03-27 [DFB] 807OpenBSD 6.1 2017-04-11 [OBD] 808FreeBSD 11.1 2017-07-26 [FBD] 809macOS 10.13 2017-09-25 [APL] 810FreeBSD 10.4 2017-10-03 [FBD] 811OpenBSD 6.2 2017-10-09 [OBD] 812DragonFly 5.0.0 2017-10-16 [DFB] 813DragonFly 5.0.1 2017-11-06 [DFB] 814DragonFly 5.0.2 2017-12-04 [DFB] 815NetBSD 7.1.1 2017-12-22 [NBD] 816NetBSD 7.1.2 2018-03-15 [NBD] 817OpenBSD 6.3 2018-04-02 [OBD] 818DragonFly 5.2.0 2018-04-10 [DFB] 819DragonFly 5.2.1 2018-05-20 [DFB] 820DragonFly 5.2.2 2018-06-18 [DFB] 821FreeBSD 11.2 2018-06-27 [FBD] 822NetBSD 8.0 2018-07-17 [NBD] 823NetBSD 7.2 2018-08-29 [NBD] 824macOS 10.14 2018-09-24 [APL] 825OpenBSD 6.4 2018-10-18 [OBD] 826DragonFly 5.4.0 2018-12-03 [DFB] 827FreeBSD 12.0 2018-12-11 [FBD] 828DragonFly 5.4.1 2018-12-24 [DFB] 829OpenBSD 6.5 2019-05-01 [OBD] 830NetBSD 8.1 2019-06-04 [NBD] 831DragonFly 5.6 2019-06-17 [DFB] 832DragonFly 5.6.1 2019-06-19 [DFB] 833FreeBSD 11.3 2019-07-09 [FBD] 834DragonFly 5.6.2 2019-08-11 [DFB] 835OpenBSD 6.6 2019-10-17 [OBD] 836macOS 10.15 2019-10-07 [APL] 837macOS 10.15.1 2019-10-29 [APL] (security/critical release) 838FreeBSD 12.1 2019-11-04 [FBD] 839NetBSD 9.0 2020-02-14 [NBD] 840DragonFly 5.8 2020-03-03 [DFB] 841DragonFly 5.6.3 2020-03-11 [DFB] 842NetBSD 8.2 2020-03-31 [NBD] 843DragonFly 5.8.1 2020-05-06 [DFB] 844OpenBSD 6.7 2020-05-19 [OBD] 845FreeBSD 11.4 2020-06-16 [FBD] 846DragonFly 5.8.2 2020-09-23 [DFB] 847DragonFly 5.8.3 2020-09-24 [DFB] 848OpenBSD 6.8 2020-10-18 [OBD] 849NetBSD 9.1 2020-10-18 [NBD] 850FreeBSD 12.2 2020-10-27 [FBD] 851macOS 11 2020-11-19 [APL] 852FreeBSD 13.0 2021-04-13 [FBD] 853OpenBSD 6.9 2021-05-01 [OBD] 854DragonFly 6.0 2021-05-08 [DFB] 855NetBSD 9.2 2021-05-12 [NBD] 856DragonFly 6.0.1 2021-10-12 [DFB] 857OpenBSD 7.0 2021-10-14 [OBD] 858macOS 12 2021-10-25 [APL] 859FreeBSD 12.3 2021-12-01 [FBD] 860DragonFly 6.2.1 2022-01-09 [DFB] 861OpenBSD 7.1 2022-04-21 [OBD] 862FreeBSD 13.1 2022-05-17 [FBD] 863DragonFly 6.2.2 2022-06-09 [DFB] 864NetBSD 9.3 2022-08-04 [NBD] 865OpenBSD 7.2 2022-10-20 [OBD] 866macOS 13 2022-10-24 [APL] 867FreeBSD 12.4 2022-12-05 [FBD] 868 869Bibliography 870------------------------ 871 872Leffler, Samuel J., Marshall Kirk McKusick, Michael J Karels and John 873Quarterman. The Design and Implementation of the 4.3BSD UNIX Operating 874System. Reading, Mass. Addison-Wesley, 1989. ISBN 0-201-06196-1 875 876Salus, Peter H. A quarter century of UNIX. Addison-Wesley Publishing 877Company, Inc., 1994. ISBN 0-201-54777-5 878 879McKusick, Marshall Kirk, Keith Bostic, Michael J Karels, and John 880Quarterman. The Design and Implementation of the 4.4BSD Operating 881System. Reading, Mass. Addison-Wesley, 1996. ISBN 0-201-54979-4 882 883McKusick, Marshall Kirk, George Neville-Neil. The Design and 884Implementation of the FreeBSD Operating System. 885Addison-Wesley Professional, Published: Aug 2, 2004. ISBN 0-201-70245-2 886 887McKusick, Marshall Kirk, George Neville-Neil, Robert Watson. The 888Design and Implementation of the FreeBSD Operating System, 2nd Edition. 889Pearson Education, Inc., 2014. ISBN 0-321-96897-2 890 891Doug McIlroy. Research Unix Reader. 892 893Michael G. Brown. The Role of BSD in the Development of Unix. 894Presented to the Tasmanian Unix Special Interest Group of the 895Australian Computer Society, Hobart, August 1993. 896 897Peter H. Salus. Unix at 25. Byte Magazine, October 1994. 898URL: https://web.archive.org/web/20081230094857/http://www.byte.com/art/9410/sec8/art3.htm 899 900Andreas Klemm, Lars Köller. If you're going to San Francisco ... 901Die freien BSD-Varianten von Unix. c't April 1997, page 368ff. 902 903BSD Release Announcements collection. 904URL: https://www.FreeBSD.org/releases/ 905 906BSD Hypertext Man Pages 907URL: https://www.FreeBSD.org/cgi/man.cgi 908 909UNIX history graphing project 910URL: https://minnie.tuhs.org/Unix_History/index.html 911 912UNIX history 913URL: https://www.levenez.com/unix/ 914 915James Howard: The BSD Family Tree 916URL: https://web.archive.org/web/20090427195917/http://ezine.daemonnews.org/200104/bsd_family.html 917("what are the differences between FreeBSD, NetBSD, and OpenBSD?") 918 919 920Acknowledgments 921--------------- 922 923Josh Gilliam for suggestions, bug fixes, and finding very old 924original BSD announcements from Usenet or tapes. 925 926Steven M. Schultz for providing 2.8BSD, 2.10BSD, 2.11BSD manual pages. 927 928-- 929Copyright (c) 1997-2012 Wolfram Schneider <wosch@FreeBSD.ORG> 930URL: https://cgit.freebsd.org/src/tree/share/misc/bsd-family-tree 931 932$FreeBSD$ 933