| BEDSOCS | 1973 | Process interaction | United Kingdom | ||
| Birtwhistle GPSSS | 1973 | United Kingdom | |||
| BUILD | 1973 | Specialised Languages | 3d shape | United Kingdom | Solid modelling language |
| CDLM | 1973 | HDLs | United Kingdom | Manchester CDL | |
| COBRA | 1973 | Macros | United Kingdom | Macro extension system for COBOL | |
| Criterion COBOL Compiler | 1973 | Business Data Processing | COBOL-68 | United Kingdom | NCR Cobol |
| glue | 1973 | United Kingdom | |||
| ML | 1973 | Strict evaluation FPs | United Kingdom | Meta Language | |
| PL316 | 1973 | PL-360s | United Kingdom | 316 port of PL-360 | |
| POPCORN | 1973 | United Kingdom | |||
| SIMUL | 1973 | United Kingdom | |||
| TASS | 1973 | Excluded from Sammet | Assemblers | United Kingdom | Intermediate language produced by the Manchester SISAL compiler |