| A+ | ⊕ 1990 | ↓ ↑ ⊕ Specialised Languages | ⊕ Array | ⊕ United States | Dialect of APL used at Morgan-Stanley |
| AC | ⊕ 1990 | ⊕ United States | Array C for CM | ||
| Acrith-XSC | ⊕ 1990 | ⊕ United States | |||
| Action Languages | ⊕ 1990 | ⊕ United States | |||
| Ada' | ⊕ 1990 | ↓ ↑ ⊕ Multi-purpose | ⊕ United States | Verifiable subset of Ada | |
| ADA/TL | ⊕ 1990 | ⊕ United States | |||
| ADS | ⊕ 1990 | ↓ ↑ ⊕ Specialised Languages | ⊕ 2d shape | ⊕ United States | Macro language for AutoCAD |
| AL | ⊕ 1990 | ⊕ United States | Systolic array language | ||
| ALGERNON | ⊕ 1990 | ↓ ↑ ⊕ Specialised Languages | ⊕ Frame languages | ⊕ United States | |
| ALLOY | ⊕ 1990 | ↓ ↑ ⊕ Multi-purpose | ⊕ United States | Multiparadigm massively parallel language | |
| ANDF | ⊕ 1990 | ⊕ United States | |||
| ANS MUMPS 1990 | ⊕ 1990 | ⊕ United States | |||
| AppleScript | ⊕ 1990 | ⊕ United States | |||
| ART-IM | ⊕ 1990 | ↓ ↑ ⊕ Specialised Languages | ⊕ RETE and production | ⊕ United States | ART with CLIPS features |
| AVA | ⊕ 1990 | ↓ ↑ ⊕ Specialised Languages | ⊕ Adas | ⊕ United States | Verifiable Ada |
| Avalon/Common LISP | ⊕ 1990 | ↓ ↑ ⊕ String and List Processing | ⊕ Lazy Evaluation LISPs | ⊕ United States | |
| Avenue | ⊕ 1990 | ⊕ United States | |||
| bash | ⊕ 1990 | ↓ ↑ ⊕ Specialised Languages | ⊕ Command systems | ⊕ United States | Command language for UNIX |
| behavior | ⊕ 1990 | ↓ ↑ ⊕ Specialised Languages | ⊕ Robotics | ⊕ United States | Robotics control language |
| Brown | ⊕ 1990 | ⊕ United States | |||
| CAT | ⊕ 1990 | ⊕ United States | |||
| C-Flavors | ⊕ 1990 | ⊕ United States | Scheme dialect with OO extensions and coroutines | ||
| CLASS | ⊕ 1990 | ⊕ United States | |||
| CLIPS/R2 | ⊕ 1990 | ↓ ↑ ⊕ Specialised Languages | ⊕ RETE and production | ⊕ United States | Rete/2 CLIPS |
| CLIST | ⊕ 1990 | ⊕ United States | |||
| CLM | ⊕ 1990 | ⊕ United States | Musical composition language | ||
| CML | ⊕ 1990 | ⊕ United States | Concurrent ML | ||
| CMN | ⊕ 1990 | ⊕ United States | Musical composition language | ||
| Cmusic | ⊕ 1990 | ↓ ↑ ⊕ Specialised Languages | ⊕ Sound-Synthesis | ⊕ United States | Musical composition language |
| COOL | ⊕ 1990 | ⊕ United States | |||
| CSP | ⊕ 1990 | ⊕ United States | |||
| DAda | ⊕ 1990 | ⊕ United States | |||
| DINO | ⊕ 1990 | ⊕ United States | parallel programming language | ||
| DMAWK | ⊕ 1990 | ⊕ United States | Database language based on AWK | ||
| Ease | ⊕ 1990 | ⊕ United States | Semitically validated Linda Occam hybrid | ||
| Enhanced Show-and-Tell | ⊕ 1990 | ⊕ United States | |||
| es | ⊕ 1990 | ↓ ↑ ⊕ String and List Processing | ⊕ United States | Expert System | |
| FORMS/3 | ⊕ 1990 | ⊕ United States | |||
| FoxPRO | ⊕ 1990 | ⊕ United States | |||
| Framework | ⊕ 1990 | ↓ ↑ ⊕ Specialised Languages | ⊕ United States | CMU Frame language | |
| FX-90 | ⊕ 1990 | ⊕ United States | Scheme dialect allowing side-effects | ||
| g3 | ⊕ 1990 | ⊕ United States | |||
| Gabriel | ⊕ 1990 | ↓ ↑ ⊕ Specialised Languages | ⊕ United States | Graphical DSP simulation language | |
| Gambit | ⊕ 1990 | ↓ ↑ ⊕ String and List Processing | ⊕ United States | Scheme variant | |
| Garnet | ⊕ 1990 | ↓ ↑ ⊕ Specialised Languages | ⊕ Interface and windowing | ⊕ United States | High level OO language with interface capabilities |
| Genie | ⊕ 1990 | ↓ ↑ ⊕ Specialised Languages | ⊕ 2d shape | ⊕ United States | Mentor's electronics CAD language |
| GENTRAN 90 | ⊕ 1990 | ⊕ United States | Reduce-to-FOTRAN 90 translator | ||
| Ghostscript | ⊕ 1990 | ↓ ↑ ⊕ Specialised Languages | ⊕ 2d shape | ⊕ United States | Interpreter for postscript |
| Glisp | ⊕ 1990 | ↓ ↑ ⊕ String and List Processing | ⊕ Lazy Evaluation LISPs | ⊕ United States | Alternate syntaxes for Common Lisp |
| Glue | ⊕ 1990 | ⊕ United States | |||
| GPSS FORTRAN III | ⊕ 1990 | ↓ ↑ ⊕ Numerical Scientific | ⊕ United States | ||
| Hermes | ⊕ 1990 | ⊕ United States | |||
| HIB0L 2 | ⊕ 1990 | ⊕ United States | |||
| HPCODE | ⊕ 1990 | ⊕ United States | |||
| Iconicode | ⊕ 1990 | ⊕ United States | |||
| Id | ⊕ 1990 | ⊕ United States | |||
| Inform 2 | ⊕ 1990 | ↓ ↑ ⊕ Specialised Languages | ⊕ Robotics | ⊕ United States | Motoman robotics language |
| IP Pascal | ⊕ 1990 | ↓ ↑ ⊕ Multi-purpose | ⊕ Pascals | ⊕ United States | Pascal with modern language features |
| ISETL | ⊕ 1990 | ⊕ United States | |||
| J | ⊕ 1990 | ↓ ↑ ⊕ Specialised Languages | ⊕ Array | ⊕ United States | Iverson's second (simplified, ascii, functional) array-based language |
| Janus | ⊕ 1990 | ⊕ United States | |||
| JOYCE+ | ⊕ 1990 | ⊕ United States | |||
| Kaleidoscope'90 | ⊕ 1990 | ⊕ United States | |||
| Kali | ⊕ 1990 | ⊕ United States | |||
| KAPPA | ⊕ 1990 | ↓ ↑ ⊕ Specialised Languages | ⊕ Frame languages | ⊕ United States | Frame language |
| KB | ⊕ 1990 | ↓ ↑ ⊕ Specialised Languages | ⊕ Frame languages | ⊕ United States | |
| KEE CLOS | ⊕ 1990 | ⊕ United States | |||
| K-REP | ⊕ 1990 | ⊕ United States | |||
| L.0 | ⊕ 1990 | ⊕ United States | |||
| Leda | ⊕ 1990 | ⊕ United States | |||
| LEGEND | ⊕ 1990 | ⊕ United States | |||
| LM3 | ⊕ 1990 | ⊕ United States | Larch Modula-3 interface | ||
| LORAM | ⊕ 1990 | ⊕ United States | |||
| LPI-Basic | ⊕ 1990 | ⊕ United States | |||
| LPI-COBOL | ⊕ 1990 | ↓ ↑ ⊕ Business Data Processing | ⊕ United States | Cross-platform optimised COBOL 85 | |
| LPI-Pascal | ⊕ 1990 | ↓ ↑ ⊕ Multi-purpose | ⊕ Pascals | ⊕ United States | |
| Lucy | ⊕ 1990 | ⊕ United States | |||
| MasPar Fortran | ⊕ 1990 | ↓ ↑ ⊕ Numerical Scientific | ⊕ United States | SIMD Fortran for MasPar | |
| Maude | ⊕ 1990 | ↓ ↑ ⊕ Specialised Languages | ⊕ United States | ||
| MaxSPITBOL | ⊕ 1990 | ⊕ United States | |||
| MeldC | ⊕ 1990 | ⊕ United States | |||
| Melinda | ⊕ 1990 | ⊕ United States | Melinda: Linda with Multiple Tuple Spaces | ||
| Meta-Crystal | ⊕ 1990 | ⊕ United States | |||
| MetaQuotes Language | ⊕ 1990 | ⊕ United States | Stock trading lagnuage | ||
| MODCAL | ⊕ 1990 | ⊕ United States | Systems version of HP-PASCAL | ||
| MOPS | ⊕ 1990 | ⊕ United States | |||
| MPL | ⊕ 1990 | ↓ ↑ ⊕ Experimental and other | ⊕ United States | Data-parallel version of C for MASPAR | |
| MultiLogo | ⊕ 1990 | ⊕ United States | |||
| NCL | ⊕ 1990 | ⊕ United States | |||
| NCL | ⊕ 1990 | ↓ ↑ ⊕ Experimental and other | ⊕ United States | Network prolog | |
| ORCA C | ⊕ 1990 | ⊕ United States | C with ORCA functionality | ||
| OSQL | ⊕ 1990 | ⊕ United States | Object-oriented Structured Query Language | ||
| P4 | ⊕ 1990 | ⊕ United States | |||
| Paralation LISP | ⊕ 1990 | ↓ ↑ ⊕ String and List Processing | ⊕ Lazy Evaluation LISPs | ⊕ United States | |
| PCLIPS | ⊕ 1990 | ↓ ↑ ⊕ Specialised Languages | ⊕ RETE and production | ⊕ United States | Parallel CLIPS |
| PCP | ⊕ 1990 | ⊕ United States | Parallel C | ||
| Perl | ⊕ 1990 | ↓ ↑ ⊕ String and List Processing | ⊕ Patterns | ⊕ United States | Pattern-based string manipulation |
| PLisp | ⊕ 1990 | ↓ ↑ ⊕ String and List Processing | ⊕ Lazy Evaluation LISPs | ⊕ United States | Pattern Lisp |
| POLYA | ⊕ 1990 | ⊕ United States | |||
| ProLOOP | ⊕ 1990 | ⊕ United States | |||
| RAND-ABEL | ⊕ 1990 | ↓ ↑ ⊕ Specialised Languages | ⊕ Decision tables | ⊕ United States | Simulation language for warfare |
| rc | ⊕ 1990 | ⊕ United States | Plan 9 shell | ||
| Resampling Stats | ⊕ 1990 | ↓ ↑ ⊕ Specialised Languages | ⊕ Columnar sheets | ⊕ United States | Resmaplong capability Omnitab |
| RHET | ⊕ 1990 | ↓ ↑ ⊕ Specialised Languages | ⊕ Frame languages | ⊕ United States | |
| ROME | ⊕ 1990 | ⊕ United States | |||
| SB-ONE | ⊕ 1990 | ⊕ United States | |||
| SCL | ⊕ 1990 | ↓ ↑ ⊕ Business Data Processing | ⊕ Response languages | ⊕ United States | Application development tool for SAS |
| SETL2 | ⊕ 1990 | ⊕ United States | |||
| SIMAN IV | ⊕ 1990 | ⊕ United States | |||
| SIMFACTORY | ⊕ 1990 | ⊕ United States | |||
| SIMFACTORY II.5 | ⊕ 1990 | ⊕ United States | |||
| SIMPL | ⊕ 1990 | ⊕ United States | Graphical control language | ||
| SISAL 90 | ⊕ 1990 | ↓ ↑ ⊕ Multi-purpose | ⊕ United States | A SISAL extension with higher order functions, polymorphism | |
| Skill | ⊕ 1990 | ↓ ↑ ⊕ Specialised Languages | ⊕ 2d shape | ⊕ United States | Cadence |
| SLANG | ⊕ 1990 | ⊕ United States | |||
| Smalltalk Express | ⊕ 1990 | ⊕ United States | |||
| SP | ⊕ 1990 | ⊕ United States | |||
| Spec | ⊕ 1990 | ⊕ United States | |||
| SPHINX | ⊕ 1990 | ⊕ United States | |||
| SPLASH | ⊕ 1990 | ⊕ United States | |||
| SRL | ⊕ 1990 | ↓ ↑ ⊕ Specialised Languages | ⊕ Predicate | ⊕ United States | Logic programming language |
| Super Syntax | ⊕ 1990 | ↓ ↑ ⊕ Specialised Languages | ⊕ 2d shape | ⊕ United States | CAD Hyperscripting language |
| SuperTalk | ⊕ 1990 | ⊕ United States | |||
| Sure | ⊕ 1990 | ⊕ United States | |||
| Symphony Two | ⊕ 1990 | ⊕ United States | |||
| Tarmac | ⊕ 1990 | ⊕ United States | |||
| TBAG | ⊕ 1990 | ↓ ↑ ⊕ Specialised Languages | ⊕ Animation | ⊕ United States | Interactive animation language as extension of C++ |
| Tcl | ⊕ 1990 | ↓ ↑ ⊕ Specialised Languages | ⊕ United States | Tool Command Language | |
| TeX 3 | ⊕ 1990 | ↓ ↑ ⊕ Specialised Languages | ⊕ United States | Text formatting language | |
| TKSolver Plus | ⊕ 1990 | ↓ ↑ ⊕ Numerical Scientific | ⊕ Algebraic | ⊕ United States | |
| TRPL | ⊕ 1990 | ⊕ United States | |||
| VIVA | ⊕ 1990 | ↓ ↑ ⊕ Experimental and other | ⊕ United States | ||
| VULCAN | ⊕ 1990 | ⊕ United States | |||
| XLISP 2 | ⊕ 1990 | ↓ ↑ ⊕ String and List Processing | ⊕ Lazy Evaluation LISPs | ⊕ United States | |
| XLISP-PLUS | ⊕ 1990 | ↓ ↑ ⊕ String and List Processing | ⊕ Lazy Evaluation LISPs | ⊕ United States | |
| ZQL | ⊕ 1990 | ⊕ United States | |||
| ZQL[C++] | ⊕ 1990 | ⊕ United States |