| Abbreviation | Definition |
|---|---|
| COOL | Ceres Object Oriented Library |
| COOL | CheckOut-Oriented language |
| COOL | Classroom Object-Oriented Language |
| COOL | COntrol-Oriented Language |
| COOLIO | Common Object Oriented Language For Input And Output |
| COOO | Commons Of Our Own |
| COP | Concurrency Oriented Programming |
| COPASI | COmplex PAthway SImulator |
| COPL | Concurrency Oriented Programming Languages |
| COPP | Certified Output Protection Protocol |
| COPU | China OSS Promotion Union |
| CORA | Computer Operated Resource Assistant |
| COS | Carousel Object Store |
| COS | Collaborative Operating System |
| COS | Comet Operating System |
| COS | Computer Operating System |
| COS | Consumer Off the Shelf |
| COS | Corba Object Service |
| COSA | Complementary Objects For Software Applications |
| COSAC | Canadian Open Systems Application Criteria |