| 401 | CycL | |
| 402 | Modula | |
| 403 | SYCL | |
| 404 | 3DMLW | |
| 405 | Python for S60 | |
| 406 | EGL (programming language) | |
| 407 | ALGOL W | |
| 408 | GAUSS (software) | |
| 409 | BlooP and FlooP | |
| 410 | QUEL query languages | |
| 411 | Magik (programming language) | |
| 412 | Asymptote (vector graphics language) | |
| 413 | ALGO | |
| 414 | Open Programming Language | |
| 415 | GT.M | |
| 416 | StarLogo | |
| 417 | CLISP | |
| 418 | X10 (programming language) | |
| 419 | Flowgorithm | |
| 420 | .QL | |
| 421 | Lasso (programming language) | |
| 422 | PeopleCode | |
| 423 | Etoys (programming language) | |
| 424 | Prova | |
| 425 | Oberon-2 | |
| 426 | Red (programming language) | |
| 427 | Esterel | |
| 428 | GAP (computer algebra system) | |
| 429 | ISWIM | |
| 430 | Informix-4GL | |
| 431 | MDL (programming language) | |
| 432 | Rocq | |
| 433 | ScratchJr | |
| 434 | JOSS | |
| 435 | Java Agent Development Framework | |
| 436 | Ratfor | |
| 437 | PILOT | |
| 438 | Cerner CCL | |
| 439 | AIMMS | |
| 440 | Tcl (programming language) | |
| 441 | Mizar system | |
| 442 | LotusScript | |
| 443 | THINK C | |
| 444 | MAPPER | |
| 445 | True BASIC | |
| 446 | Lisp Machine Lisp | |
| 447 | Allegro Common Lisp | |
| 448 | Text Adventure Development System | |
| 449 | Liberty BASIC | |
| 450 | NekoVM | |
| 451 | OPS5 | |
| 452 | FAUST (programming language) | |
| 453 | Keysight VEE | |
| 454 | AngelScript | |
| 455 | Euphoria (programming language) | |
| 456 | PureScript | |
| 457 | KiXtart | |
| 458 | SmallBASIC | |
| 459 | FreeFem++ | |
| 460 | ACL2 | |
| 461 | NesC | |
| 462 | Jq (programming language) | |
| 463 | Analytica (software) | |
| 464 | Basic4android | |
| 465 | PIC (markup language) | |
| 466 | AgentSheets | |
| 467 | COMAL | |
| 468 | Join-pattern | |
| 469 | RAPID | |
| 470 | Epigram (programming language) | |
| 471 | Perl Data Language | |
| 472 | Maclisp | |
| 473 | Prograph | |
| 474 | OpenMusic | |
| 475 | Seed7 | |
| 476 | Strongtalk | |
| 477 | Stateflow | |
| 478 | Kyma (sound design language) | |
| 479 | FOCAL (programming language) | |
| 480 | Interlisp | |
| 481 | Nyquist (programming language) | |
| 482 | Hope (programming language) | |
| 483 | SMIL Timesheets | |
| 484 | Noop | |
| 485 | ARexx | |
| 486 | S/SL programming language | |
| 487 | MSX BASIC | |
| 488 | APMonitor | |
| 489 | GeneXus | |
| 490 | WMLScript | |
| 491 | Pyrex (programming language) | |
| 492 | LFE (programming language) | |
| 493 | BEFLIX | |
| 494 | CHILL | |
| 495 | Actor-Based Concurrent Language | |
| 496 | Component Pascal | |
| 497 | SIMSCRIPT | |
| 498 | V (programming language) | |
| 499 | Gambit (Scheme implementation) | |
| 500 | GFA BASIC | |
