| Abbreviation | Definition |
|---|---|
| ADCST | Advanced Diploma in Computer Software Technology |
| ADCT | Analysis, Design, Code, Test |
| ADCU | Advanced Data Communications Utility |
| ADCU | Application Developers Customer Unit |
| ADDL | Artifact Design Description Language |
| ADDS | Active Directory Domain Services |
| ADDT | Advance Data Driven Technique |
| ADDT | Advanced Data-Driven Testing |
| ADDT | Automatic Data Distribution Tool |
| ADE | Amiga Developers Environment |
| ADE | APOC Development Environment |
| ADEL | Animated Dance Event Language |
| ADEOS | Adaptive Domain Environment for Operating Systems |
| ADF | Application Definition File |
| ADF | Application Development Framework |
| ADFR | Active Directory Forest Root |
| ADFS | Active Directory Federation Services |
| ADFS2 | Active Directory Federation Services version 2 |
| ADFT | Adaptable Data Fusion Testbed |
| ADFT | Almost Definitive Financial Toolbox |