| Mercury | 1999 | ||||
| MERCURY | 1995 | Experimental and other | Australia | Logic/functional language | |
| Mercury Assembler | 1964 | Symbolic assemblers | United Kingdom | ||
| Mercury Autocode | 1958 | Multi-purpose | Early Autocodes | United Kingdom | Autocode for the Ferranti MERCURY computer |
| Mercury Programming System | 1960 | United States | Realtime programming system for the Mercury Spaceflights | ||
| Mercury.NET | 2002 | Australia |