| Abbreviation | Definition |
|---|---|
| HIP | Human Interactive Proof |
| HIPE | Hope Integrated Programming Environment |
| HIS | Hersteller Initiative Software |
| HISR | High Level ISR (Interrupt Service Routine) |
| HIVE | Highly Interactive Visualization Environment |
| HL7 | Health Level Seven |
| HLA | High-Level Application |
| HLAPI | High Level Application Programming Interface |
| HLBL | High-Level Behavior-based programming Laanguage |
| HLC | Half-life Logo Creator |
| HLCA | Half-Life and Curses Administration for Linux |
| HLCCAD | High-Level Chip Computer-Aided Design (software) |
| HLCF | High Level, Context Free |
| HLCL | High-Level Concurrent Language |
| HLCM | Hawkeye Live Confidence Monitor |
| HLCP | Hourly Load Calculation Program |
| HLD | High-Level Design |
| HLDD | High-Level Design Document |
| HLFX | Half-Life FX |
| HLSD | High Level Software Design |