| Astro Basic | ⊕ 1978 | ⊕ United States | |||
| BC | ⊕ 1978 | ↓ ↑ ⊕ Specialised Languages | ⊕ United States | Bell Calculator | |
| BDARE | ⊕ 1978 | ↓ ↑ ⊕ Specialised Languages | ⊕ United States | ||
| BIL | ⊕ 1978 | ↓ ↑ ⊕ Specialised Languages | ⊕ Microprogramming and HLAs | ⊕ United States | Balm Implementation Language |
| BIOSSIM | ⊕ 1978 | ↓ ↑ ⊕ String and List Processing | ⊕ Process interaction | ⊕ United States | Biochemical simulations language |
| Blue | ⊕ 1978 | ⊕ United States | |||
| Bourne shell | ⊕ 1978 | ↓ ↑ ⊕ Specialised Languages | ⊕ Command systems | ⊕ United States | Command shell for UNIX |
| CAMIL | ⊕ 1978 | ⊕ United States | |||
| CONSTRAINTS | ⊕ 1978 | ⊕ United States | |||
| CPS | ⊕ 1978 | ⊕ United States | Continuation Passing Style | ||
| DARE-III | ⊕ 1978 | ↓ ↑ ⊕ Specialised Languages | ⊕ Differential Equations | ⊕ United States | Continuous simulation languages |
| Dataplot | ⊕ 1978 | ↓ ↑ ⊕ Specialised Languages | ⊕ Visualisation | ⊕ United States | |
| DC | ⊕ 1978 | ↓ ↑ ⊕ Specialised Languages | ⊕ United States | Desk calculator | |
| DDL-P | ⊕ 1978 | ↓ ↑ ⊕ Specialised Languages | ⊕ United States | PASCAL implementation of DDL | |
| DDM | ⊕ 1978 | ⊕ United States | |||
| DoD-1 | ⊕ 1978 | ↓ ↑ ⊕ Multi-purpose | ⊕ United States | Interim name for Ada | |
| DYL280 | ⊕ 1978 | ↓ ↑ ⊕ Business Data Processing | ⊕ United States | Auditing language | |
| ESPL/I | ⊕ 1978 | ↓ ↑ ⊕ Experimental and other | ⊕ United States | ||
| Eurisko | ⊕ 1978 | ⊕ United States | |||
| FOCAL-15 | ⊕ 1978 | ↓ ↑ ⊕ On-Line | ⊕ Generation of JOSS II | ⊕ United States | FOCAL for the PDP-15 |
| FORAL LP | ⊕ 1978 | ↓ ↑ ⊕ Business Data Processing | ⊕ United States | FORAL with light pen | |
| Gamma | ⊕ 1978 | ↓ ↑ ⊕ String and List Processing | ⊕ United States | Expression oriented language | |
| GNOSIS-II | ⊕ 1978 | ⊕ United States | |||
| GYVE | ⊕ 1978 | ↓ ↑ ⊕ Experimental and other | ⊕ United States | Concurrent SETL dialect | |
| HPL | ⊕ 1978 | ⊕ United States | HP desktop systems language | ||
| HYPOCOBOL | ⊕ 1978 | ↓ ↑ ⊕ Business Data Processing | ⊕ United States | Extension of COBOL | |
| ICL | ⊕ 1978 | ↓ ↑ ⊕ Experimental and other | ⊕ United States | Language for ambiguous lists | |
| Id | ⊕ 1978 | ↓ ↑ ⊕ Experimental and other | ⊕ United States | Irvine Dataflow | |
| ISIS | ⊕ 1978 | ↓ ↑ ⊕ Specialised Languages | ⊕ Expression oriented | ⊕ United States | Simulation language |
| JaM | ⊕ 1978 | ↓ ↑ ⊕ Specialised Languages | ⊕ Stack | ⊕ United States | |
| Janus | ⊕ 1978 | ⊕ United States | Universal intermediate language | ||
| JPLDIS | ⊕ 1978 | ⊕ United States | |||
| LHC-PILOT | ⊕ 1978 | ↓ ↑ ⊕ String and List Processing | ⊕ CAI languages | ⊕ United States | Boeing Pilot |
| LINUS | ⊕ 1978 | ⊕ United States | Querying language | ||
| MBALM/1700 | ⊕ 1978 | ⊕ United States | Port of MBALM | ||
| MESS | ⊕ 1978 | ↓ ↑ ⊕ String and List Processing | ⊕ United States | ||
| MIDAS | ⊕ 1978 | ↓ ↑ ⊕ Multi-purpose | ⊕ Pascals | ⊕ United States | MID-level ASsembly |
| MIDAS/6800 | ⊕ 1978 | ↓ ↑ ⊕ Multi-purpose | ⊕ Pascals | ⊕ United States | MID-level ASsembly |
| MIDAS/8080 | ⊕ 1978 | ↓ ↑ ⊕ Multi-purpose | ⊕ Pascals | ⊕ United States | MID-level ASsembly |
| MINIMAL BASIC | ⊕ 1978 | ⊕ United States | ANSI and ISO standard subsets of BASIC | ||
| MODCAP | ⊕ 1978 | ⊕ United States | |||
| MOUSE4 | ⊕ 1978 | ↓ ↑ ⊕ Specialised Languages | ⊕ United States | RATFOR with a hash table | |
| MPSX | ⊕ 1978 | ⊕ United States | |||
| MuSimp | ⊕ 1978 | ⊕ United States | |||
| OPS2 | ⊕ 1978 | ↓ ↑ ⊕ Specialised Languages | ⊕ RETE and production | ⊕ United States | Official Production System version 2 |
| PADL-1 | ⊕ 1978 | ⊕ United States | |||
| Parasol | ⊕ 1978 | ⊕ United States | |||
| Path Pascal | ⊕ 1978 | ↓ ↑ ⊕ Multi-purpose | ⊕ Pascals | ⊕ United States | |
| Pebbleman | ⊕ 1978 | ⊕ United States | |||
| PECOS | ⊕ 1978 | ⊕ United States | APF JOSS | ||
| PIGLI | ⊕ 1978 | ⊕ United States | |||
| PL/B | ⊕ 1978 | ↓ ↑ ⊕ Excluded from Sammet | ⊕ Assemblers | ⊕ United States | Portable assembly |
| PL/MP | ⊕ 1978 | ⊕ United States | |||
| PL/P | ⊕ 1978 | ⊕ United States | Programming Language, Prime | ||
| PLOGO | ⊕ 1978 | ↓ ↑ ⊕ String and List Processing | ⊕ List | ⊕ United States | Logo rewritten in Pascal |
| PLUM | ⊕ 1978 | ↓ ↑ ⊕ On-Line | ⊕ United States | ||
| PLZ/ASM | ⊕ 1978 | ⊕ United States | |||
| PLZ/SYS | ⊕ 1978 | ⊕ United States | |||
| PNOSIS | ⊕ 1978 | ⊕ United States | |||
| Poplar | ⊕ 1978 | ↓ ↑ ⊕ String and List Processing | ⊕ Markovs | ⊕ United States | Text manipulation language |
| QUERY/UPDATE | ⊕ 1978 | ↓ ↑ ⊕ Business Data Processing | ⊕ Hierarchical DB | ⊕ United States | |
| Red | ⊕ 1978 | ↓ ↑ ⊕ Multi-purpose | ⊕ United States | ||
| REDUCE/17OO | ⊕ 1978 | ⊕ United States | Port of REDUCE | ||
| RESQ | ⊕ 1978 | ↓ ↑ ⊕ Specialised Languages | ⊕ Event scheduling | ⊕ United States | |
| Sandman | ⊕ 1978 | ⊕ United States | Prelimiary Ada environment spec | ||
| SAPL | ⊕ 1978 | ↓ ↑ ⊕ Numerical Scientific | ⊕ Array | ⊕ United States | Structural extensions to APL |
| Scheme 48 | ⊕ 1978 | ↓ ↑ ⊕ String and List Processing | ⊕ Lazy Evaluation FPs | ⊕ United States | |
| SCOT | ⊕ 1978 | ↓ ↑ ⊕ Specialised Languages | ⊕ Sound-Synthesis | ⊕ United States | Music programming language |
| Screenwrite | ⊕ 1978 | ⊕ United States | |||
| Scribe | ⊕ 1978 | ↓ ↑ ⊕ Specialised Languages | ⊕ Layout and display | ⊕ United States | Text-formatting language |
| SDM | ⊕ 1978 | ⊕ United States | |||
| SGML | ⊕ 1978 | ⊕ United States | |||
| SIMPL-Q | ⊕ 1978 | ↓ ↑ ⊕ Multi-purpose | ⊕ United States | Systems implementation language | |
| SL/1 | ⊕ 1978 | ↓ ↑ ⊕ Specialised Languages | ⊕ Vector | ⊕ United States | Subset of SIMPL-T |
| SL1 | ⊕ 1978 | ⊕ United States | SARA module definition language | ||
| SLISP | ⊕ 1978 | ↓ ↑ ⊕ String and List Processing | ⊕ Lazy Evaluation LISPs | ⊕ United States | |
| Smalltalk-78 | ⊕ 1978 | ⊕ United States | |||
| SOGO | ⊕ 1978 | ↓ ↑ ⊕ Specialised Languages | ⊕ Sound-Synthesis | ⊕ United States | Music programming language |
| SORITEC | ⊕ 1978 | ↓ ↑ ⊕ Specialised Languages | ⊕ Algebraic | ⊕ United States | statistical/econometric programming language |
| Steelman | ⊕ 1978 | ⊕ United States | |||
| TARTAN | ⊕ 1978 | ⊕ United States | |||
| TEMPO | ⊕ 1978 | ⊕ United States | |||
| TEMPO/SP | ⊕ 1978 | ⊕ United States | |||
| TeX | ⊕ 1978 | ↓ ↑ ⊕ Specialised Languages | ⊕ United States | Text formatting language | |
| TeX-78 | ⊕ 1978 | ↓ ↑ ⊕ Specialised Languages | ⊕ United States | Text formatting language | |
| VisiCalc | ⊕ 1978 | ↓ ↑ ⊕ Specialised Languages | ⊕ 2D Spreadsheets | ⊕ United States | Spreadsheet program |
| Yellow | ⊕ 1978 | ⊕ United States | Ada proposal language | ||
| ZENO | ⊕ 1978 | ⊕ United States | |||
| ZGRASS | ⊕ 1978 | ↓ ↑ ⊕ Specialised Languages | ⊕ Animation | ⊕ United States |