| Abbreviation | Definition |
|---|---|
| CSS | Core System Software |
| CSSCS | Computer Security Software Consulting Services |
| CSSE | Center for Systems and Software Engineering |
| CSSE | Computational Systems Software Environment |
| CSSE | Computer Science Software Engineering |
| CSSI | Computer Solutions and Software International |
| CSSL | Concurrent Software Systems Lab |
| CSSL | Concurrent Software Systems Laboratory |
| CSSU | Community Seamless Software Update |
| CSSV | C String Static Verifier |
| CST | California Software and Technology |
| CST | Coleman Software Technology |
| CSTM | Certified Software Testing Manager |
| CSTP | Certified Software Test Professional |
| CSUI | Context-Sensitive User Interface |
| CSV | ClassAd Structure Verifier |
| CSVB | Cisco Spam and Virus Blocker |
| CSW | Common Software |
| CTD | Cheats, Tips, and Downloads |
| CTD | Common Technical Document |