| English | Thesaurus |
| Advanced Communications Technologies and Services | ACTS (EU, ACTS) |
| Dedicated Office Systems and Services | DOSS |
| Directory and Security Services | DSS (DCE, IBM, LAN) |
| Document Transfer and Manipulation Services | DTMS (CCITT, T.400) |
| European Strategic Program of Research and Development in Information Technology | ESPRIT (EU) |
| US Department of Health and Human Services | HHS |
| Integrated Systems and Information Services | ISIS (OS, Intel) |
| multiannual Community programme to make digital content in Europe more accessible, usable and exploitable | the eContentplus Programme |
| National Federation of Abstracting and Information Services | NFAIS (organization, USA) |
| National Information on Software and Services | NISS (USA) |
| Object Linking and Embedding Directory Services | OLEDS (ODSI, MS) |
| Object Linking and Embedding Directory Services | OLE DS (ODSI, MS) |
| Office Automation Technology and Services | OATS (OA) |
| Office Automation Technology and Services | OATS |
| Program and project management office | The function responsible for supporting program and project managers, and gathering, assessing and reporting information about the conduct of their programs and constituent projects |
| Program Evaluation and Review Technique | A project management technique used in the planning and control of system projects |
| Program Evaluation / Evolution and Review Technique | PERT |
| Program for Internet News and Email / PINE Is No longer ELM | PINE |
| System and Network Administration Program | SNAP |
| Telecommunications and Information Infrastructure Assistance Program | TIIAP (USA) |
| Total On-Line Program and Information Control System | TOPICS |
| Tracing Authors' rights by Labelling Image Services and Monitoring Access Network | TALISMAN (project, Europa) |
| Transaction and Switching and Transport Services | TSTS (BELLCORE) |
