| Abbreviation | Definition |
|---|---|
| AB | Application Bridge |
| ABAP | Advanced Business Application Programming |
| ABAP | Advances Business Application Programming |
| ABBS | Apple Bulletin Board System |
| ABCU | Address Book Conversion Utility |
| ABEF | A Better eBay Filter |
| ABEL | Advanced Boolean Expression Language |
| ABEL | Assumption Based Evidential Language |
| ABG | Answers By Gateway |
| ABI | Application Binary Interface |
| ABIOS | Advanced Basic Input/Output System (for IBM PS/2) |
| ABIS | Automated Biometric Identification System |
| ABL | Advanced Business Language |
| ABLE | Agent Building and Learning Environment |
| ABMC | Automation Bulk Mailing Center |
| ABMN | Agent-based Model and Notation |
| ABO | Adaptive Binary Optimization |
| ABSC | Advanced Business Software Corp |
| ABSC | Advanced Business Software Corporation |
| ABSD | Agent Based Software Development |