| Abbreviation | Definition |
|---|---|
| SIFT | Stanford Information Filtering Tool |
| SIIA | Software and Information Industry Association |
| SIIA | Software Information Industry Association |
| SIL | Standard Interchange Language |
| SILS | Software In Loop Simulation |
| SIM | Spatial Information Management |
| SIM | System Import Mapping |
| SIMD | Single Instruction, Multiple Data |
| SIMICA | Software Interface for Maintenance Information Collection and Analysis |
| SIML | Synthetic Intelligence Markup Language |
| SIMM | Single in-line memory module |
| SIMM | Software for Interactive Musculoskeletal Modeling |
| SIMOLP | Simplified Interactive Multiple Objective Linear Programming |
| SIMP | Simple Interface To Matter Programming |
| SIMS | Simulation in plural (simulations) |
| SIN | Software Identification Number |
| SION | Software Individuals Original Node |
| SIOS | Software for Innovative Open Solutions |
| SIP | Self Initiated Program |
| SIPIAN | SImulated PIpe OrgAN |