| SLS | Second Level Support Hilfeleistung/Unterstützung zweiter Kategorie [z.B. bei einer Hotline] |
| MLS | Multiple Link Support |
| LST | Linux Support Team |
| LSS | Life Support System |
| LSP | Local Support Provider |
| LSP | Linux Support Package |
| VSE | Verification Support Environment |
| LSL | Link Support Layer |
| MSDS | Microsoft Developer Support |
| IHS | Integrated Hospital Support |
| GSS | Group Support System |
| ESM | Electronic Support Measures |
| MSS | Management Support System |
| NAS | Network Application Support |
| TSS | Technical Support Service [s] |
| TSM | Tech Support Manager |
| TSE | Technical Support Engineer [Sun] |
| TSA | Technical Support Alliance |
| SVM | Support Vector Machine |
| VTSU | Virtual Terminal Support |
| OSS | Office Support System |
| NTS | Network Technical Support |
| NSU | Networking Support Utilities |
| NSC | National Support Center |
| DSS | Decision Support System |
| DSS | Decision Support System |
| SSU | Session Support Utility [DEC] |
| NTSA | Networking Technical Support Alliance Serviceoptimierung von Herstellern um Investorenattraktivität zu erhöhen |
| BSP | Board Support Package [engl.] Basissoftware für den Betrieb einer Rechnerplatine |
| NLS | National/Native Language Support |
| NLS | Native/National Language Support |
| OSS | Operational/Operator Support System |
| BSS | Billing Support System [engl.] |
| BSS | Business Support System [engl.] |
| ISUS | Information Services and User Support [DFN] |
| BMS | Basic Mapping Support [engl.] |
| PDSS | Post Development and Software Support |
| PLSS | Portable Life Support System |
| ADSP | Amiga developer support program Unterstützungsvarianten für AMIGA-Entwickler |
| APSE | Ada Programming Support Environment [engl.] Entwicklungsumgebung: Ada Programmierungs- und Unterstützungs-Umgebung |
| ASC | Authorized Support Centre [engl.] |
| ASI | Adapter Support Interface [engl.] |
| SSP | System Service / Support Processor |
| SSGA | System Support Gate Array |
| SIMA | Support Initiative for Multimedia Applications |
| SGSN | Serving GPRS Support Node |
| PSCN | Program Support Communications Network |
| MASS | Maximum Availability and Support Subsystem |
| IASG | Internet Addiction Support Group |
| ESC | Electronic Support Center/Centre |