| AAIMS | 1979 | ↓ ↑ ⊕ Business Data Processing | ⊕ Array | ⊕ United States | Array-based querying system |
| ABEL | 1979 | ↓ ↑ ⊕ Multi-purpose | ⊕ OO C family | ⊕ Norway | OO Language with specification semantics |
| Abstracto | 1979 | ↓ ↑ ⊕ Specialised Languages | ⊕ Netherlands | Algorithm description language | |
| Abstracto 84 | 1979 | ↓ ↑ ⊕ Specialised Languages | ⊕ Netherlands | ||
| ACL | 1979 | ↓ ↑ ⊕ Specialised Languages | ⊕ United States | Application controller language | |
| ACSL | 1979 | ↓ ↑ ⊕ Specialised Languages | ⊕ United States | Advanced Continuous Simulation Language | |
| Actus | 1979 | ⊕ United States | |||
| Ada | 1979 | ↓ ↑ ⊕ Multi-purpose | ⊕ United States | US DoD general purpose language | |
| Ada-O | 1979 | ⊕ Germany | Ada subset used for compiler bootstrapping | ||
| ADM | 1979 | ||||
| ALGOL 68-RT | 1979 | ↓ ↑ ⊕ Numerical Scientific | ⊕ True ALGOL68s | ⊕ United Kingdom | Parallel ALGOL 68-R |
| ALICE | 1979 | ⊕ Netherlands | ALeph Intermediate CodE | ||
| APLOMB | 1979 | ↓ ↑ ⊕ Specialised Languages | ⊕ Array | ⊕ Italy | Structural extensions to APL |
| APLSF | 1979 | ↓ ↑ ⊕ Specialised Languages | ⊕ Array | ⊕ United States | DEC APL with shared system functions and system variables |
| ASBAL | 1979 | ↓ ↑ ⊕ Experimental and other | ⊕ Stack | ⊕ United States | Stack-based language derived from CLU |
| ASTRA | 1979 | ||||
| Astral | 1979 | ↓ ↑ ⊕ Business Data Processing | ⊕ United States | Database language | |
| AT370 | 1979 | ⊕ United States | AT extensions to APL/360 | ||
| A-TABLE Lisp | 1979 | ↓ ↑ ⊕ String and List Processing | ⊕ Lazy Evaluation LISPs | ||
| ATLAS | 1979 | ↓ ↑ ⊕ Specialised Languages | ⊕ 2d shape | ⊕ Japan | Visual querying system for geographical information systems |
| ATOL | 1979 | ⊕ United Kingdom | |||
| AWK | 1979 | ↓ ↑ ⊕ String and List Processing | ⊕ United States | String processing language | |
| BASEX | 1979 | ⊕ United States | Real-time BASIC dialect | ||
| BASIL | 1979 | ⊕ United States | HLL for Logic machine | ||
| BEST1 | 1979 | ↓ ↑ ⊕ Business Data Processing | ⊕ Report Generators | ⊕ United States | BESTOP outputting PL/I |
| BlooP | 1979 | ⊕ United States | |||
| BNA | 1979 | ⊕ Germany | |||
| Bristle Blocks | 1979 | ||||
| CAMAC | 1979 | ⊕ United States | |||
| CCNPascal | 1979 | ↓ ↑ ⊕ Multi-purpose | ⊕ Pascals | ⊕ United States | Concurrent pascal dialect |
| CGGL | 1979 | ↓ ↑ ⊕ Specialised Languages | ⊕ United States | ||
| CIL | 1979 | ⊕ United States | |||
| COSY | 1979 | ||||
| COSY | 1979 | ↓ ↑ ⊕ Specialised Languages | ⊕ Graph | ⊕ United Kingdom | |
| Cray Fortran | 1979 | ↓ ↑ ⊕ Numerical Scientific | ⊕ United States | Array processing FORTRAN for the Cray | |
| CSL | 1979 | ||||
| CSSA | 1979 | ↓ ↑ ⊕ Multi-purpose | ⊕ Germany | Application language for INCAS | |
| CYBER-LISP | 1979 | ↓ ↑ ⊕ String and List Processing | ⊕ Lazy Evaluation LISPs | ||
| DAPLEX | 1979 | ⊕ United States | Data language | ||
| DDA | 1979 | ||||
| DMATRAN | 1979 | ||||
| DOC | 1979 | ↓ ↑ ⊕ Specialised Languages | ⊕ United States | Tex processing and formatting language | |
| DPL | 1979 | ↓ ↑ ⊕ Multi-purpose | ⊕ C family | ⊕ United States | mmp Parallel Language |
| Edinburgh LCF | 1979 | ⊕ United Kingdom | |||
| EFL | 1979 | ↓ ↑ ⊕ Multi-purpose | ⊕ United States | Extended FORTRAN Language | |
| ELLA | 1979 | ⊕ United Kingdom | |||
| EQL | 1979 | ⊕ Japan | |||
| Etude | 1979 | ↓ ↑ ⊕ Specialised Languages | ⊕ Sound-Synthesis | ⊕ United States | Music programming language |
| FGL | 1979 | ↓ ↑ ⊕ String and List Processing | ⊕ United States | Flow Graph Lisp | |
| FGL | 1979 | ↓ ↑ ⊕ Specialised Languages | ⊕ United States | Function Graph Language. | |
| FlooP | 1979 | ⊕ United States | Toy imperative language | ||
| FOCAL | 1979 | ↓ ↑ ⊕ Numerical Scientific | ⊕ United States | Forty-One CAlculator Language | |
| FOCUS | 1979 | ↓ ↑ ⊕ Business Data Processing | ⊕ Hierarchical DB | ⊕ United States | Hierarchical database language |
| FORTH 79 | 1979 | ⊕ United States | |||
| FSCAN | 1979 | ||||
| GADS | 1979 | ↓ ↑ ⊕ Specialised Languages | ⊕ 2d shape | ⊕ United States | Geographical query language |
| GC | 1979 | ⊕ United States | |||
| GDDL | 1979 | ↓ ↑ ⊕ Specialised Languages | ⊕ 2d shape | ⊕ Japan | Geographical data description language |
| GEO-QUEL | 1979 | ↓ ↑ ⊕ Specialised Languages | ⊕ 2d shape | ⊕ United States | Geographical extensions to QUEL |
| Goulet and Donaghey Information Language | 1979 | ||||
| GRAM | 1979 | ⊕ Denmark | |||
| HARVEST | 1979 | ||||
| Herbison-Evans Movement Language | 1979 | ||||
| HYPOL | 1979 | ↓ ↑ ⊕ Business Data Processing | ⊕ Labelled Matrix | ⊕ India | Integrated DB language |
| IC-Prolog | 1979 | ↓ ↑ ⊕ String and List Processing | ⊕ Horn clause | ⊕ United Kingdom | |
| IGL | 1979 | ↓ ↑ ⊕ Specialised Languages | ⊕ 2d shape | ⊕ Japan | Geographical query language |
| ILIAD | 1979 | ⊕ United States | |||
| INTERCOL | 1979 | ↓ ↑ ⊕ Specialised Languages | ⊕ United States | module interconnection language | |
| IPS | 1979 | ||||
| IQ | 1979 | ||||
| ISPS | 1979 | ↓ ↑ ⊕ Specialised Languages | ⊕ Digital | ⊕ United States | Operational hardware specification language |
| KATE | 1979 | ||||
| KELUS | 1979 | ⊕ Poland | |||
| LAS | 1979 | ↓ ↑ ⊕ Specialised Languages | ⊕ Algebraic | Algebra system | |
| LAX2 | 1979 | ||||
| Leitz TAS | 1979 | ||||
| LGN | 1979 | ||||
| LIL | 1979 | ⊕ United States | |||
| LIMP | 1979 | ⊕ United Kingdom | Language for Implementing Messages and Protocols | ||
| LIMPET | 1979 | ⊕ United Kingdom | Subset of LIMP | ||
| LR | 1979 | ||||
| MACRO | 1979 | ↓ ↑ ⊕ String and List Processing | ⊕ United States | ||
| MAP | 1979 | ⊕ United States | Macro Preoprocessor for Pascal | ||
| MDL | 1979 | Machine Definition Language | |||
| MICRO-BALM | 1979 | ||||
| MICRODARE | 1979 | ⊕ United States | |||
| MIIS | 1979 | ⊕ United States | Dialect of Mumps | ||
| MINITAB II | 1979 | ↓ ↑ ⊕ Specialised Languages | ⊕ Columnar sheets | ⊕ United States | Interactive statistical programming |
| MMSFORTH | 1979 | ||||
| MODEL II | 1979 | ↓ ↑ ⊕ On-Line | ⊕ Modelling | ⊕ United States | Evolution of Model |
| MUSTRAN 4 | 1979 | ⊕ United States | |||
| NETL | 1979 | ↓ ↑ ⊕ Experimental and other | ⊕ Frame languages | ⊕ United States | |
| NIL | 1979 | ↓ ↑ ⊕ String and List Processing | ⊕ United States | New implementation of Lisp | |
| NQUEL | 1979 | ⊕ Switzerland | |||
| OBJT | 1979 | ⊕ United States | |||
| Ollongren | 1979 | ||||
| OPS3 | 1979 | ↓ ↑ ⊕ Specialised Languages | ⊕ RETE and production | ⊕ United States | Official Production System version 3 |
| OPS4 | 1979 | ↓ ↑ ⊕ Specialised Languages | ⊕ RETE and production | ⊕ United States | Official Production System version 4 |
| OPS5 | 1979 | ↓ ↑ ⊕ Specialised Languages | ⊕ RETE and production | ⊕ United States | Official Production System version 5 |
| PAL | 1979 | ⊕ Japan | |||
| Parlance | 1979 | ||||
| Pascal Plus | 1979 | ↓ ↑ ⊕ Multi-purpose | ⊕ Pascals | ⊕ Ireland | |
| PASCAL/GRAPH | 1979 | ⊕ Austria | |||
| PCL | 1979 | A Process Oriented Job Control Language | |||
| PHI | 1979 | ↓ ↑ ⊕ String and List Processing | ⊕ Frame languages | ⊕ United States | KBS |
| PILE | 1979 | ||||
| PLITS | 1979 | ||||
| PLY | 1979 | ⊕ United States | |||
| PLZ | 1979 | ⊕ United States | |||
| POL | 1979 | ⊕ Italy | Mathematical programming language | ||
| polyFORTH | 1979 | ||||
| Port | 1979 | ||||
| PRESENT | 1979 | ||||
| PSL | 1979 | ↓ ↑ ⊕ String and List Processing | ⊕ Lazy Evaluation LISPs | ⊕ United States | Portable Lisp |
| Q-GERT | 1979 | ↓ ↑ ⊕ Specialised Languages | ⊕ 2d shape | ⊕ United States | Graphical simulation system |
| QLOG | 1979 | ||||
| QUEST | 1979 | ↓ ↑ ⊕ Business Data Processing | ⊕ Other DPLs | ⊕ United States | Hybrid query language |
| Qwiktran | 1979 | ||||
| RDL | 1979 | ↓ ↑ ⊕ Specialised Languages | ⊕ United States | Requirements and Development Language | |
| REBEL/BASIC | 1979 | ||||
| RED1 | 1979 | ⊕ United States | |||
| REXX | 1979 | ↓ ↑ ⊕ String and List Processing | ⊕ United Kingdom | ||
| RIDL | 1979 | ||||
| Rigel | 1979 | ↓ ↑ ⊕ Business Data Processing | ⊕ United States | ||
| Rosetta SMALLTALK | 1979 | ||||
| RS Algol | 1979 | ↓ ↑ ⊕ Numerical Scientific | ⊕ True ALGOL68s | ⊕ United Kingdom | |
| S-Algol | 1979 | ↓ ↑ ⊕ Numerical Scientific | ⊕ True ALGOL60s | ⊕ United Kingdom | St Andrew's Algol |
| Sassa Macro Processor | 1979 | ⊕ Japan | Algol-style macro generator | ||
| SCAN | 1979 | ⊕ United States | |||
| SIML/I | 1979 | ↓ ↑ ⊕ Specialised Languages | ⊕ United States | System simulation language | |
| SIMPL-D | 1979 | ↓ ↑ ⊕ Specialised Languages | ⊕ United States | SIMPL with data abstraction extensions | |
| Simple Euclid | 1979 | ⊕ United States | simpiflication of Euclid | ||
| SIS | 1979 | ⊕ Denmark | Semantics Implementation System | ||
| SMACK | 1979 | ↓ ↑ ⊕ Experimental and other | ⊕ Macroassemblers | ⊕ United States | Macro package for MIL |
| SMALL | 1979 | ||||
| SNePS | 1979 | ↓ ↑ ⊕ Specialised Languages | ⊕ Frame languages | ⊕ United States | |
| SOL | 1979 | ||||
| Spacemaker | 1979 | ⊕ Slovenia | |||
| STAMPS | 1979 | ⊕ Japan | |||
| Standard Lisp | 1979 | ↓ ↑ ⊕ String and List Processing | ⊕ Lazy Evaluation LISPs | ⊕ United States | |
| STAR | 1979 | ⊕ Japan | |||
| STEP | 1979 | ⊕ Russian Federation | |||
| SUGAR | 1979 | ||||
| SUILVEN | 1979 | ||||
| SUPERMAC | 1979 | ↓ ↑ ⊕ String and List Processing | ⊕ United Kingdom | Embeddable macroprocessor | |
| SYSLISP | 1979 | ↓ ↑ ⊕ String and List Processing | ⊕ Lazy Evaluation LISPs | ⊕ United States | |
| TAL | 1979 | ⊕ United States | Tandem systems language | ||
| TAL | 1979 | ⊕ United States | Hazeltine CAI language | ||
| TAU | 1979 | ⊕ United States | Compiler for T | ||
| TBL | 1979 | ↓ ↑ ⊕ String and List Processing | ⊕ United States | TAble description language | |
| TC | 1979 | ⊕ United States | T-Compiler | ||
| Thalmann | 1979 | Medical database language | |||
| Theseus | 1979 | ↓ ↑ ⊕ Business Data Processing | ⊕ United States | ||
| ThingLab | 1979 | ↓ ↑ ⊕ Experimental and other | ⊕ United States | ||
| Toronto Euclid | 1979 | ⊕ Canada | |||
| TRIP | 1979 | ||||
| U-Code | 1979 | ⊕ United States | Universal P-Code | ||
| UCS | 1979 | ⊕ United States | Universal Compiler System | ||
| UNIT Package | 1979 | ↓ ↑ ⊕ String and List Processing | ⊕ Frame languages | ⊕ United States | |
| Utopia 84 | 1979 | ⊕ United States | |||
| V | 1979 | ↓ ↑ ⊕ Specialised Languages | ⊕ United States | Graphic language | |
| VAL | 1979 | ⊕ United States | Value-oriented Algorithmic Language | ||
| VORELLE | 1979 | ⊕ Germany | Decision table generator | ||
| Wyoming structured APL | 1979 | ↓ ↑ ⊕ Specialised Languages | ⊕ Array | ⊕ United States | APL with Dijkstra's structures |
| YALLL | 1979 | ⊕ United States | High level assembly | ||
| ZCODE | 1979 | ||||
| ZetaLisp | 1979 | ↓ ↑ ⊕ String and List Processing | ⊕ Lazy Evaluation LISPs | ⊕ United States | |
| ZOPL | 1979 | ↓ ↑ ⊕ Multi-purpose | ⊕ Pascals | ⊕ United States | Systems language for GEAC library systems |