| Abbreviation | Definition |
|---|---|
| CLASP | Common LISP Analytical Statistics Package |
| CLC | Command Line Calculator |
| CLCK | Crazy Light Construction Kit |
| CLE | Chinese Linux Extension |
| CLF | Common Look and Feel |
| CLIC | Canadian Linux Interests Coalition |
| CLIM | Common Lisp Interface Manager |
| CLISP | Common Lisp |
| CLM | Common Lisp Music |
| CLMS | Compliance Learning Management Software |
| CLOM | CLOM is a combination of technology and infrastructure to deliver clarity on what might otherwise be |
| CLP | Constraint Logic Programming |
| CLRSCR | Clearing the screen |
| CLS | Conversational Language System |
| CM | Cache Manager |
| CM | Compilation Manager |
| CM | Completion Message |
| CMA | Content Management Application |
| CMAE | CMap Asembly Editor |
| CMF | Cocoa Media Framework |