| Subject | English | Thesaurus |
| abbr., scottish | Advanced Aerial Fire-Support System | AAFSS |
| mil., abbr. | Collection Coordination Facility-Support System | CCF-SS |
| abbr., post | Mail Transport Equipment Support System | MTESS (software, redesigned 2003) |
| abbr., scottish | Weapons Systems Support Facility | WSSF |
| busin., abbr. | Work Centered Support System | WCSS |
| busin., abbr. | Work Group Support Systems | WGSS |