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 5.0 OpenBSD 4.5 | 233 | \ | | | \ | | 234 | | Mac OS X | | \ | | 235 | | 10.6 | | \ | | 236 | | | | | NetBSD | DragonFly 2.4.0 237 | | | | | 5.0.1 OpenBSD 4.6 | 238 | | | | | | | | 239 *--FreeBSD | | | | | | | 240 | 8.0 | | | | | | | 241 | | FreeBSD | | | NetBSD | | 242 | | 7.3 | | | 5.0.2 | DragonFly 2.6.0 243 | | | | | | OpenBSD 4.7 | 244 | FreeBSD | | | | | | 245 | 8.1 | | | | | | 246 | | | | | | | DragonFly 2.8.2 247 | | | | | | OpenBSD 4.8 | 248 | | | | | *--NetBSD | | 249 | FreeBSD FreeBSD | | | 5.1 | | 250 | 8.2 7.4 | | | | | DragonFly 2.10.1 251 | | | | | | OpenBSD 4.9 | 252 | `-----. Mac OS X | | | | | 253 | \ 10.7 | | | | | 254 | | | | | | OpenBSD 5.0 | 255 *--FreeBSD | | | | | | | 256 | 9.0 | | | | NetBSD | DragonFly 3.0.1 257 | | FreeBSD | | | 5.1.2 | | 258 | | 8.3 | | | | | | 259 | | | | | | NetBSD | | 260 | | | | | | 5.1.3 | | 261 | | | | | | OpenBSD 5.1 | 262 | | | Mac OS X | `----. | | 263 | | | 10.8 | \ | | 264 | | | | NetBSD 6.0 | | | 265 | | | | | | | | OpenBSD 5.2 DragonFly 3.2.1 266 | FreeBSD | | | | | NetBSD | | 267 | 9.1 | | | | | 5.2 | | 268 | | | | | | | | | | 269 | | | | | | | NetBSD | | 270 | | | | | | | 5.2.1 | | 271 | | | | | | | | | 272 | | | | | | \ | | 273 | | | | | | NetBSD | | 274 | | | | | | 6.0.1 | | 275 | | | | | | | | | 276 | | | | | | NetBSD | | 277 | | | | | | 6.0.2 | | 278 | | | | | | | OpenBSD 5.3 DragonFly 3.4.1 279 | | | | | | NetBSD | | 280 | | | | | | 6.0.3 | | 281 | | | | | | | | | 282 | | | | | | NetBSD | | 283 | | | | | | 6.0.4 | | 284 | | | | | | | | | 285 | | | | | | NetBSD | | 286 | | | | | | 6.0.5 | | 287 | | | | | | | | 288 | | | | | |`-NetBSD 6.1 | | 289 | | FreeBSD | | | | | 290 | | 8.4 | | NetBSD 6.1.1 | | 291 | | | | | | | 292 | FreeBSD | | NetBSD 6.1.2 | | 293 | 9.2 Mac OS X | | | | 294 | | 10.9 | | OpenBSD 5.4 | 295 | `-----. | | | | DragonFly 3.6.0 296 | \ | | | | | 297 *--FreeBSD | | | NetBSD 6.1.3 | | 298 | 10.0 | | | | | | 299 | | | | | | | DragonFly 3.6.1 300 | | | | | | | | 301 | | | | | | | | 302 | | | | | | | DragonFly 3.6.2 303 | | | | | NetBSD 6.1.4 | | 304 | | | | | | | | 305 | | | | | | OpenBSD 5.5 | 306 | | | | | | | | 307 | | | | | | | DragonFly 3.8.0 308 | | | | | | | | 309 | | | | | | | | 310 | | | | | | | DragonFly 3.8.1 311 | | | | | | | | 312 | | | | | | | | 313 | | | | | | | DragonFly 3.6.3 314 | | | | | | | | 315 | | FreeBSD | | | | | 316 | | 9.3 | | | | | 317 | | | | NetBSD 6.1.5 | DragonFly 3.8.2 318 | | Mac OS X | | | 319 | | 10.10 | | | 320 | | | | OpenBSD 5.6 | 321 | FreeBSD | | | | 322 | 10.1 | | | DragonFly 4.0.1 323 | | | | | | 324 | | | | | DragonFly 4.0.2 325 | | | | | | 326 | | | | | DragonFly 4.0.3 327 | | | | | | 328 | | | | | DragonFly 4.0.4 329 | | | | | | 330 | | | | | DragonFly 4.0.5 331 | | | | | | 332 | | | | OpenBSD 5.7 | 333 | | | | | DragonFly 4.2.0 334 | FreeBSD | | | | 335 | 10.2 | | | | 336 | | OS X NetBSD 7.0 | | 337 | | 10.11 | OpenBSD 5.8 | 338 | | | | | DragonFly 4.4.1 339 | FreeBSD | | OpenBSD 5.9 | 340 | 10.3 | | | | 341 | | | | | 342 *--FreeBSD | | | | 343 | 11.0 | | | | 344 | | | | | 345 | | | | | 346FreeBSD 12 -current | NetBSD -current OpenBSD -current DragonFly -current 347 | | | | | 348 v v v v v 349 350Time 351---------------- 352 353Time tolerance +/- 6 months, depending on which book/article you read; if it 354was the announcement in Usenet or if it was available as tape. 355 356[44B] McKusick, Marshall Kirk, Keith Bostic, Michael J Karels, 357 and John Quarterman. The Design and Implementation of 358 the 4.4BSD Operating System. 359[APL] Apple website [http://www.apple.com/macosx/] 360[BSDI] Berkeley Software Design, Inc. 361[DFB] DragonFlyBSD Project, The. 362[DOC] README, COPYRIGHT on tape. 363[FBD] FreeBSD Project, The. 364[KB] Keith Bostic. BSD2.10 available from Usenix. comp.unix.sources, 365 Volume 11, Info 4, April, 1987. 366[KKK] Mike Karels, Kirk McKusick, and Keith Bostic. tahoe announcement. 367 comp.bugs.4bsd.ucb-fixes, June 15, 1988. 368[KSJ] Michael J. Karels, Carl F. Smith, and William F. Jolitz. 369 Changes in the Kernel in 2.9BSD. Second Berkeley Software 370 Distribution UNIX Version 2.9, July, 1983. 371[NBD] NetBSD Project, The. 372[OBD] OpenBSD Project, The. 373[QCU] Salus, Peter H. A quarter century of UNIX. 374[SMS] Steven M. Schultz. 2.11BSD, UNIX for the PDP-11. 375[TUHS] The Unix Historical Society. http://minnie.tuhs.org/Unix_History/. 376[USE] Usenet announcement. 377[WRS] Wind River Systems, Inc. 378[dmr] Dennis Ritchie, via E-Mail 379 380Multics 1965 381UNIX Summer 1969 382 DEC PDP-7 383First Edition 1971-11-03 [QCU] 384 DEC PDP-11/20, Assembler 385Second Edition 1972-06-12 [QCU] 386 10 UNIX installations 387Third Edition 1973-02-xx [QCU] 388 Pipes, 16 installations 389Fourth Edition 1973-11-xx [QCU] 390 rewriting in C effected, 391 above 30 installations 392Fifth Edition 1974-06-xx [QCU] 393 above 50 installations 394Sixth Edition 1975-05-xx [QCU] 395 port to DEC Vax 396Seventh Edition 1979-01-xx [QCU] 397 first portable UNIX 398Eighth Edition 1985-02-xx [QCU] 399 VAX 11/750, VAX 11/780 [dmr] 400 descended from 4.1c BSD [dmr] 401 descended from 4.1 BSD [44B] 402 scooping-out and replacement of the character-device 403 and networking part by the streams mechanism 404 405Ninth Edition 1986-09-xx [QCU] 406Tenth Edition 1989-10-xx [QCU] 407 4081BSD late 1977 409 1978-03-09 [QCU] 410 PDP-11, Pascal, ex(1) 411 30 free copies of 1BSD sent out 412 35 tapes sold for 50 USD [QCU] 4132BSD mid 1978 [QCU] 1979-05-10 [TUHS] 414 75 2BSD tapes shipped 4152.79BSD 1980-04-xx [TUHS] 4162.8BSD 1981-07-xx [KSJ] 417 4182.8.1BSD 1982-01-xx [QCU] 419 set of performance improvements 4202.9BSD 1983-07-xx [KSJ] 4212.9.1BSD 1983-11-xx [TUHS] 4222.9BSD-Seismo 1985-08-xx [SMS] 4232.10BSD 1987-04-xx [KKK] 4242.10.1BSD 1989-01-xx [SMS] 4252.11BSD 1992-02-xx [SMS] 4262.11BSD rev #430 1999-12-13 [SMS] 427 42832V 1978-1[01]-xx [QCU] 4293BSD late 1979 [QCU] March 1980 [TUHS] 430 virtual memory, page replacement, 431 demand paging 4324.0BSD 1980-10-xx 4334.1BSD 1981-07-08 [DOC] 4344.1aBSD 1982-04-xx 435 alpha release, 100 sites, networking [44B] 4364.1bBSD internal release, fast filesystem [44B] 4374.1cBSD late 1982 438 beta release, IPC [44B] 4394.2BSD 1983-09-xx [QCU] 440 1983-08-03 [DOC] 4414.3BSD 1986-06-xx [QCU] 442 1986-04-05 [KB], [DOC] 4434.3BSD Tahoe 1988-06-15 [QCU], [DOC] 4444.3BSD NET/1 1988-11-xx [QCU] 445 1989-01-01 [DOC] 4464.3BSD Reno 1990-06-29 [QCU], [DOC] 4474.3BSD NET/2 1991-06-28 [QCU], [DOC] 448 449BSD/386 ALPHA 1991-12-xx [BSDI] 450 first code released to people outside BSDI 451386BSD 0.0 1992-02-xx [DOC] 452BSD/386 0.3.1 1992-04-xx [BSDI] first ext. beta; B customers 453BSD/386 0.3.3 1992-06-xx [BSDI] first CDROM version 454386BSD 0.1 1992-07-28 [DOC] 4554.4BSD Alpha 1992-07-07 456BSD/386 0.9.3 1992-10-xx [BSDI] 457 first external gamma; G customers 458BSD/386 0.9.4 1992-12-xx [BSDI] 459 would have been 1.0 except for request 460 for preliminary injunction 461BSD/386 1.0 1993-03-xx [BSDI] 462 injunction denied; first official release 463NetBSD 0.8 1993-04-20 [NBD] 4644.4BSD 1993-06-01 [USE] 465NetBSD 0.9 1993-08-23 [NBD] 466FreeBSD 1.0 1993-11-01 [FBD] 467FreeBSD 1.0.2 1993-11-14 [FBD] 468 supersedes 1.0 13 days after release. 469BSD/386 1.1 1994-02-xx [BSDI] 4704.4BSD Lite 1994-03-01 [USE] 471FreeBSD 1.1 1994-05-07 [FBD] 472FreeBSD 1.1.5 1994-06-30 [FBD] 473FreeBSD 1.1.5.1 1994-07-05 [FBD] 474 supersedes 1.1.5 5 days after release. 475NetBSD 1.0 1994-10-26 [NBD] 476386BSD 1.0 1994-11-12 [USE] 477FreeBSD 2.0 1994-11-23 [FBD] 478BSD/OS 2.0 1995-01-xx [BSDI] 4.4 lite based 479FreeBSD 2.0.5 1995-06-10 [FBD] 480BSD/OS 2.0.1 1995-06-xx [BSDI] 4814.4BSD Lite Release 2 1995-06-xx [44B] 482 the true final distribution from the CSRG 483FreeBSD 2.1.0 1995-11-19 [FBD] 484NetBSD 1.1 1995-11-26 [NBD] 485BSD/OS 2.1 1996-01-xx [BSDI] 486FreeBSD 2.1.5 1996-07-14 [FBD] 487NetBSD 1.2 1996-10-04 [NBD] 488OpenBSD 2.0 1996-10-18 [OBD] 489FreeBSD 2.1.6 1996-11-16 [FBD] 490FreeBSD 2.1.6.1 1996-11-25 [FBD] (sendmail security release) 491Rhapsody 1997-xx-xx 492FreeBSD 2.1.7 1997-02-20 [FBD] 493BSD/OS 3.0 1997-02-xx [BSDI] 4.4 lite2 based 494FreeBSD 2.2.0 1997-03-16 [FBD] 495FreeBSD 2.2.1 1997-03-25 [FBD] 496FreeBSD 2.2.2 1997-05-16 [FBD] 497NetBSD 1.2.1 1997-05-20 [NBD] (patch release) 498OpenBSD 2.1 1997-06-01 [OBD] 499FreeBSD 2.2.5 1997-10-22 [FBD] 500OpenBSD 2.2 1997-12-01 [OBD] 501NetBSD 1.3 1998-01-04 [NBD] 502FreeBSD 2.2.6 1998-03-25 [FBD] 503NetBSD 1.3.1 1998-03-09 [NBD] (patch release) 504BSD/OS 3.1 1998-03-xx [BSDI] 505OpenBSD 2.3 1998-05-19 [OBD] 506NetBSD 1.3.2 1998-05-29 [NBD] (patch release) 507FreeBSD 2.2.7 1998-07-22 [FBD] 508BSD/OS 4.0 1998-08-xx [BSDI] 509 2-lock MP support, ELF executables 510FreeBSD 3.0 1998-10-16 [FBD] 511 FreeBSD-3.0 is a snapshot from -current, 512 while 3.1 and 3.2 are from 3.x-stable which 513 was branched quite some time after 3.0-release 514FreeBSD 2.2.8 1998-11-29 [FBD] 515OpenBSD 2.4 1998-12-01 [OBD] 516NetBSD 1.3.3 1998-12-23 [NBD] (patch release) 517FreeBSD 3.1 1999-02-15 [FBD] 518BSD/OS 4.0.1 1999-03-xx [BSDI] 519NetBSD 1.4 1999-05-12 [NBD] 520FreeBSD 3.2 1999-05-17 [FBD] 521OpenBSD 2.5 1999-05-19 [OBD] 522NetBSD 1.4.1 1999-08-26 [NBD] (patch release) 523FreeBSD 3.3 1999-09-17 [FBD] 524OpenBSD 2.6 1999-12-01 [OBD] 525FreeBSD 3.4 1999-12-20 [FBD] 526BSD/OS 4.1 1999-12-xx [BSDI] 527FreeBSD 4.0 2000-03-13 [FBD] 528NetBSD 1.4.2 2000-03-19 [NBD] (patch release) 529OpenBSD 2.7 2000-06-15 [OBD] 530FreeBSD 3.5 2000-06-24 [FBD] 531FreeBSD 4.1 2000-07-27 [FBD] 532FreeBSD 3.5.1 2000-07-28 [FBD] 533FreeBSD 4.1.1 2000-09-25 [FBD] (a network-only patch release) 534FreeBSD 4.2 2000-11-21 [FBD] 535NetBSD 1.4.3 2000-11-25 [NBD] (patch release) 536BSD/OS 4.2 2000-11-29 [BSDI] 537OpenBSD 2.8 2000-12-01 [OBD] 538NetBSD 1.5 2000-12-06 [NBD] 539Mac OS X 10.0 2001-03-24 [APL] 540FreeBSD 4.3 2001-04-20 [FBD] 541OpenBSD 2.9 2001-06-01 [OBD] 542NetBSD 1.5.1 2001-07-11 [NBD] (patch release) 543NetBSD 1.5.2 2001-09-13 [NBD] (patch release) 544FreeBSD 4.4 2001-09-18 [FBD] 545Mac OS X 10.1 2001-09-29 [APL] 546OpenBSD 3.0 2001-12-01 [OBD] 547FreeBSD 4.5 2002-01-29 [FBD] 548BSD/OS 4.3 2002-03-14 [WRS] 549OpenBSD 3.1 2002-05-19 [OBD] 550FreeBSD 4.6 2002-06-15 [FBD] 551NetBSD 1.5.3 2002-07-22 [NBD] (patch release) 552FreeBSD 4.6.2 2002-08-15 [FBD] (patch release) 553Mac OS X 10.2 2002-08-23 [APL] 554NetBSD 1.6 2002-09-14 [NBD] 555FreeBSD 4.7 2002-10-08 [FBD] 556OpenBSD 3.2 2002-11-01 [OBD] 557FreeBSD 5.0 2003-01-17 [FBD] 558 FreeBSD 5.0 is a separate branch off of 559 -current, similar to 3.0. 560FreeBSD 4.8 2003-04-03 [FBD] 561NetBSD 1.6.1 2003-04-21 [NBD] (patch release) 562OpenBSD 3.3 2003-05-01 [OBD] 563BSD/OS 5.0 2003-05-?? [WRS] 564FreeBSD 5.1 2003-06-09 [FBD] 565Mac OS X 10.3 2003-10-24 [APL] 566FreeBSD 4.9 2003-10-28 [FBD] 567BSD/OS 5.1 ISE 2003-10-?? [WRS] (final version) 568OpenBSD 3.4 2003-11-01 [OBD] 569FreeBSD 5.2 2004-01-12 [FBD] 570FreeBSD 5.2.1 2004-02-22 [FBD] (patch release) 571NetBSD 1.6.2 2004-03-01 [NBD] (patch release) 572OpenBSD 3.5 2004-04-01 [OBD] 573FreeBSD 4.10 2004-05-27 [FBD] 574DragonFly 1.0 2004-07-12 [DFB] 575OpenBSD 3.6 2004-10-29 [OBD] 576FreeBSD 5.3 2004-11-06 [FBD] 577NetBSD 2.0 2004-12-09 [NBD] 578FreeBSD 4.11 2005-01-25 [FBD] 579DragonFly 1.2.0 2005-04-08 [DFB] 580NetBSD 2.0.2 2005-04-14 [NBD] (security/critical release) 581Mac OS X 10.4 2005-04-29 [APL] 582FreeBSD 5.4 2005-05-09 [FBD] 583OpenBSD 3.7 2005-05-19 [OBD] 584NetBSD 2.0.3 2005-10-31 [NBD] (security/critical release) 585OpenBSD 3.8 2005-11-01 [OBD] 586FreeBSD 6.0 2005-11-01 [FBD] 587NetBSD 2.1 2005-11-02 [NBD] 588NetBSD 3.0 2005-12-23 [NBD] 589DragonFly 1.4.0 2006-01-08 [DFB] 590FreeBSD 2.2.9 2006-04-01 [FBD] 591OpenBSD 3.9 2006-05-01 [OBD] 592FreeBSD 6.1 2006-05-08 [FBD] 593FreeBSD 5.5 2006-05-25 [FBD] 594NetBSD 3.0.1 2006-07-24 [NBD] (security/critical release) 595DragonFly 1.6.0 2006-07-24 [DFB] 596OpenBSD 4.0 2006-11-01 [OBD] 597NetBSD 3.0.2 2006-11-04 [NBD] (security/critical release) 598NetBSD 3.1 2006-11-04 [NBD] 599FreeBSD 6.2 2007-01-15 [FBD] 600DragonFly 1.8.0 2007-01-30 [DFB] 601OpenBSD 4.1 2007-05-01 [OBD] 602DragonFly 1.10.0 2007-08-06 [DFB] 603Mac OS X 10.5 2007-10-26 [APL] 604OpenBSD 4.2 2007-11-01 [OBD] 605NetBSD 4.0 2007-12-19 [NBD] 606FreeBSD 6.3 2008-01-18 [FBD] 607DragonFly 1.12.0 2008-02-26 [DFB] 608FreeBSD 7.0 2008-02-27 [FBD] 609OpenBSD 4.3 2008-05-01 [OBD] 610DragonFly 2.0.0 2008-07-21 [DFB] 611OpenBSD 4.4 2008-11-01 [OBD] 612FreeBSD 6.4 2008-11-28 [FBD] 613FreeBSD 7.1 2009-01-04 [FBD] 614DragonFly 2.2.0 2009-02-17 [DFB] 615NetBSD 5.0 2009-04-29 [NBD] 616OpenBSD 4.5 2009-05-01 [OBD] 617FreeBSD 7.2 2009-05-04 [FBD] 618Mac OS X 10.6 2009-06-08 [APL] 619NetBSD 5.0.1 2009-08-02 [NBD] (security/critical release) 620DragonFly 2.4.0 2009-09-16 [DFB] 621OpenBSD 4.6 2009-10-18 [OBD] 622FreeBSD 8.0 2009-11-26 [FBD] 623NetBSD 5.0.2 2010-02-12 [NBD] (security/critical release) 624FreeBSD 7.3 2010-03-23 [FBD] 625DragonFly 2.6.0 2010-03-28 [DFB] 626OpenBSD 4.7 2010-05-19 [OBD] 627FreeBSD 8.1 2010-07-24 [FBD] 628DragonFly 2.8.2 2010-10-30 [DFB] 629OpenBSD 4.8 2010-11-01 [OBD] 630NetBSD 5.1 2010-11-19 [NBD] 631FreeBSD 7.4 2011-02-24 [FBD] 632FreeBSD 8.2 2011-02-24 [FBD] 633DragonFly 2.10.1 2011-04-26 [DFB] 634OpenBSD 4.9 2011-05-01 [OBD] 635Mac OS X 10.7 2011-07-20 [APL] 636OpenBSD 5.0 2011-11-01 [OBD] 637FreeBSD 9.0 2012-01-12 [FBD] 638NetBSD 5.1.2 2012-02-02 [NBD] (security/critical release) 639DragonFly 3.0.1 2012-02-21 [DFB] 640FreeBSD 8.3 2012-04-18 [FBD] 641OpenBSD 5.1 2012-05-01 [OBD] 642Mac OS X 10.8 2012-07-25 [APL] 643NetBSD 6.0 2012-10-17 [NBD] 644OpenBSD 5.2 2012-11-01 [OBD] 645DragonFly 3.2.1 2012-11-02 [DFB] 646NetBSD 5.2 2012-12-03 [NBD] 647NetBSD 6.0.1 2012-12-26 [NBD] (security/critical release) 648FreeBSD 9.1 2012-12-30 [FBD] 649DragonFly 3.4.1 2013-04-29 [DFB] 650OpenBSD 5.3 2013-05-01 [OBD] 651NetBSD 6.0.2 2013-05-18 [NBD] (security/critical release) 652NetBSD 6.1 2013-05-18 [NBD] 653FreeBSD 8.4 2013-06-07 [FBD] 654NetBSD 6.1.1 2013-08-22 [NBD] 655NetBSD 5.1.3 2013-09-29 [NBD] 656NetBSD 5.2.1 2013-09-29 [NBD] 657FreeBSD 9.2 2013-09-30 [FBD] 658NetBSD 6.0.3 2013-09-30 [NBD] 659NetBSD 6.1.2 2013-09-30 [NBD] 660Mac OS X 10.9 2013-10-22 [APL] 661OpenBSD 5.4 2013-11-01 [OBD] 662DragonFly 3.6.0 2013-11-25 [DFB] 663FreeBSD 10.0 2014-01-20 [FBD] 664NetBSD 6.0.4 2014-01-27 [NBD] 665NetBSD 6.1.3 2014-01-27 [NBD] 666DragonFly 3.6.1 2014-02-22 [DFB] 667DragonFly 3.6.2 2014-04-10 [DFB] 668NetBSD 6.0.5 2014-04-19 [NDB] 669NetBSD 6.1.4 2014-04-19 [NDB] 670OpenBSD 5.5 2014-05-01 [OBD] 671DragonFly 3.8.0 2014-06-04 [DFB] 672DragonFly 3.8.1 2014-06-16 [DFB] 673DragonFly 3.6.3 2014-06-17 [DFB] 674FreeBSD 9.3 2014-07-05 [FBD] 675DragonFly 3.8.2 2014-08-08 [DFB] 676NetBSD 6.1.5 2014-09-22 [NBD] 677Mac OS X 10.10 2014-10-16 [APL] 678OpenBSD 5.6 2014-11-01 [OBD] 679FreeBSD 10.1 2014-11-14 [FBD] 680DragonFly 4.0.1 2014-11-25 [DFB] 681DragonFly 4.0.2 2015-01-07 [DFB] 682DragonFly 4.0.3 2015-01-21 [DFB] 683DragonFly 4.0.4 2015-03-09 [DFB] 684DragonFly 4.0.5 2015-03-23 [DFB] 685OpenBSD 5.7 2015-05-01 [OBD] 686DragonFly 4.2.0 2015-06-29 [DFB] 687FreeBSD 10.2 2015-08-13 [FBD] 688NetBSD 7.0 2015-09-25 [NBD] 689OS X 10.11 2015-09-30 [APL] 690OpenBSD 5.8 2015-10-18 [OBD] 691DragonFly 4.4.1 2015-12-07 [DFB] 692OpenBSD 5.9 2016-03-29 [OBD] 693FreeBSD 10.3 2016-04-04 [FBD] 694 695Bibliography 696------------------------ 697 698Leffler, Samuel J., Marshall Kirk McKusick, Michael J Karels and John 699Quarterman. The Design and Implementation of the 4.3BSD UNIX Operating 700System. Reading, Mass. Addison-Wesley, 1989. ISBN 0-201-06196-1 701 702Salus, Peter H. A quarter century of UNIX. Addison-Wesley Publishing 703Company, Inc., 1994. ISBN 0-201-54777-5 704 705McKusick, Marshall Kirk, Keith Bostic, Michael J Karels, and John 706Quarterman. The Design and Implementation of the 4.4BSD Operating 707System. Reading, Mass. Addison-Wesley, 1996. ISBN 0-201-54979-4 708 709McKusick, Marshall Kirk, George Neville-Neil. The Design and 710Implementation of the FreeBSD Operating System. 711Addison-Wesley Professional, Published: Aug 2, 2004. ISBN 0-201-70245-2 712 713McKusick, Marshall Kirk, George Neville-Neil, Robert Watson. The 714Design and Implementation of the FreeBSD Operating System, 2nd Edition. 715Pearson Education, Inc., 2014. ISBN 0-321-96897-2 716 717Doug McIlroy. Research Unix Reader. 718 719Michael G. Brown. The Role of BSD in the Development of Unix. 720Presented to the Tasmanian Unix Special Interest Group of the 721Australian Computer Society, Hobart, August 1993. 722 723Peter H. Salus. Unix at 25. Byte Magazine, October 1994. 724URL: http://www.byte.com/art/9410/sec8/art3.htm 725 726Andreas Klemm, Lars Köller. If you're going to San Francisco ... 727Die freien BSD-Varianten von Unix. c't April 1997, page 368ff. 728 729BSD Release Announcements collection. 730URL: http://www.FreeBSD.org/releases/ 731 732BSD Hypertext Man Pages 733URL: http://www.FreeBSD.org/cgi/man.cgi 734 735UNIX history graphing project 736URL: http://minnie.tuhs.org/Unix_History/index.html 737 738UNIX history 739URL: http://www.levenez.com/unix/ 740 741James Howard: The BSD Family Tree 742URL: http://ezine.daemonnews.org/200104/bsd_family.html 743("what are the differences between FreeBSD, NetBSD, and OpenBSD?") 744 745 746Acknowledgments 747--------------- 748 749Josh Gilliam for suggestions, bug fixes, and finding very old 750original BSD announcements from Usenet or tapes. 751 752Steven M. Schultz for providing 2.8BSD, 2.10BSD, 2.11BSD manual pages. 753 754-- 755Copyright (c) 1997-2012 Wolfram Schneider <wosch@FreeBSD.ORG> 756URL: http://svnweb.freebsd.org/base/head/share/misc/bsd-family-tree 757 758$FreeBSD$ 759