| AAIMS | ⊕ 1979 | ↓ ↑ ⊕ Business Data Processing | ⊕ Array | ⊕ United States | Array-based querying system |
| 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 | |
| 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 |
| Astral | ⊕ 1979 | ↓ ↑ ⊕ Business Data Processing | ⊕ United States | Database language | |
| AT370 | ⊕ 1979 | ⊕ United States | AT extensions to APL/360 | ||
| 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 | |||
| CAMAC | ⊕ 1979 | ⊕ United States | |||
| CCNPascal | ⊕ 1979 | ↓ ↑ ⊕ Multi-purpose | ⊕ Pascals | ⊕ United States | Concurrent pascal dialect |
| CGGL | ⊕ 1979 | ↓ ↑ ⊕ Specialised Languages | ⊕ United States | ||
| CIL | ⊕ 1979 | ⊕ United States | |||
| Cray Fortran | ⊕ 1979 | ↓ ↑ ⊕ Numerical Scientific | ⊕ United States | Array processing FORTRAN for the Cray | |
| DAPLEX | ⊕ 1979 | ⊕ United States | Data language | ||
| DOC | ⊕ 1979 | ↓ ↑ ⊕ Specialised Languages | ⊕ United States | Tex processing and formatting language | |
| DPL | ⊕ 1979 | ↓ ↑ ⊕ Multi-purpose | ⊕ C family | ⊕ United States | mmp Parallel Language |
| EFL | ⊕ 1979 | ↓ ↑ ⊕ Multi-purpose | ⊕ United States | Extended FORTRAN Language | |
| 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 | |||
| GADS | ⊕ 1979 | ↓ ↑ ⊕ Specialised Languages | ⊕ 2d shape | ⊕ United States | Geographical query language |
| GC | ⊕ 1979 | ⊕ United States | |||
| GEO-QUEL | ⊕ 1979 | ↓ ↑ ⊕ Specialised Languages | ⊕ 2d shape | ⊕ United States | Geographical extensions to QUEL |
| ILIAD | ⊕ 1979 | ⊕ United States | |||
| INTERCOL | ⊕ 1979 | ↓ ↑ ⊕ Specialised Languages | ⊕ United States | module interconnection language | |
| ISPS | ⊕ 1979 | ↓ ↑ ⊕ Specialised Languages | ⊕ Digital | ⊕ United States | Operational hardware specification language |
| LIL | ⊕ 1979 | ⊕ United States | |||
| MACRO | ⊕ 1979 | ↓ ↑ ⊕ String and List Processing | ⊕ United States | ||
| MAP | ⊕ 1979 | ⊕ United States | Macro Preoprocessor for Pascal | ||
| MICRODARE | ⊕ 1979 | ⊕ United States | |||
| MIIS | ⊕ 1979 | ⊕ United States | Dialect of Mumps | ||
| MINITAB II | ⊕ 1979 | ↓ ↑ ⊕ Specialised Languages | ⊕ Columnar sheets | ⊕ United States | Interactive statistical programming |
| 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 | |
| OBJT | ⊕ 1979 | ⊕ United States | |||
| 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 |
| PHI | ⊕ 1979 | ↓ ↑ ⊕ String and List Processing | ⊕ Frame languages | ⊕ United States | KBS |
| PLY | ⊕ 1979 | ⊕ United States | |||
| PLZ | ⊕ 1979 | ⊕ United States | |||
| 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 |
| QUEST | ⊕ 1979 | ↓ ↑ ⊕ Business Data Processing | ⊕ Other DPLs | ⊕ United States | Hybrid query language |
| RDL | ⊕ 1979 | ↓ ↑ ⊕ Specialised Languages | ⊕ United States | Requirements and Development Language | |
| RED1 | ⊕ 1979 | ⊕ United States | |||
| Rigel | ⊕ 1979 | ↓ ↑ ⊕ Business Data Processing | ⊕ United States | ||
| 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 | ||
| SMACK | ⊕ 1979 | ↓ ↑ ⊕ Experimental and other | ⊕ Macroassemblers | ⊕ United States | Macro package for MIL |
| SNePS | ⊕ 1979 | ↓ ↑ ⊕ Specialised Languages | ⊕ Frame languages | ⊕ United States | |
| Standard Lisp | ⊕ 1979 | ↓ ↑ ⊕ String and List Processing | ⊕ Lazy Evaluation LISPs | ⊕ United States | |
| 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 | ||
| Theseus | ⊕ 1979 | ↓ ↑ ⊕ Business Data Processing | ⊕ United States | ||
| ThingLab | ⊕ 1979 | ↓ ↑ ⊕ Experimental and other | ⊕ United States | ||
| 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 | ||
| Wyoming structured APL | ⊕ 1979 | ↓ ↑ ⊕ Specialised Languages | ⊕ Array | ⊕ United States | APL with Dijkstra's structures |
| YALLL | ⊕ 1979 | ⊕ United States | High level assembly | ||
| ZetaLisp | ⊕ 1979 | ↓ ↑ ⊕ String and List Processing | ⊕ Lazy Evaluation LISPs | ⊕ United States | |
| ZOPL | ⊕ 1979 | ↓ ↑ ⊕ Multi-purpose | ⊕ Pascals | ⊕ United States | Systems language for GEAC library systems |