| $1 | 16 bit | ACID | AES | AGL |
| ASCIIbetical order | ASE | ASPECT | Actis | Active Server Pages |
| ActiveX | ActiveX Data Objects | Advanced SCSI Peripheral Interface | Advanced Software Environment | Aegis |
| Ajax | Algorithmic Model | Algorithmic Test Case Generation | Analogy Model | Application Binary Interface |
| Application Control Architecture | Application Portability Architecture | Application Program Interface | Application environment specification | Architecture Neutral Distribution Format |
| Artifex | Autopass | B-Method | B-Toolkit | BOLERO |
| BSP method | BSS | BUGSYS | Basic Object System | Binary Compatibility Standard |
| Bird-Meertens Formalism | Bohr bug | Booch method | Brooks's Law | Bugzilla |
| Business Application Programming Interface | C Programmer's Disease | C preprocessor | CIS | CLiP |
| CMS | CMZ | COHESION | COM | COME FROM |
| Case Integration Services | Class-Relation Method | Coad/Yourdon | CodeCenter | Common Object Request Broker Architecture |
| Common Program Interface | Common User Access | Component Object Model | Computer Aided Software Engineering | Computer-Aided Software Testing |
| ConCoord | Concurrent Versions System | Constructive Cost Model | Cost Driver Attribute | Cyclo |
| DIM statement | DUEL | Data Flow Diagram | Debbugs | Delivered Source Instruction |
| Delphi Technique | Deployment Descriptor | Design In Real Time | Developmental Test and Evaluation | DirectX |
| Distributed Component Object Model | Domain Software Engineering Environment | Dynamic Object-Oriented Requirements System | Dynamic Systems Development Method | EVALUATE |