- Acronym (7,605)
- Airforce (562)
- Chemistry abbreviations (2,581)
- Community abbreviations (8,018)
- Educational abbreviations (7,167)
- Electronics abbreviations (5,007)
- IATA Airport Code (7,796)
- IT (100)
- Medical-organisations (191)
- Military abbreviations (27,185)
- Navy (396)
- Non-Profit Organizations (8,966)
- Open Standards (176)
- University abbreviations (11,301)
- acronyms for diseases and disorders (320)
- aerospace (347)
- astronomy (951)
- avionics (433)
- business (172)
- computing (1,099)
- computing abbreviations and acronyms (5,814)
- ecclesiastical (544)
- energy (705)
- ghana (583)
- healthcare (435)
- media abbreviations and acronyms (5,973)
- military (1,653)
- oil&gas (1,563)
- optometric (231)
- software abbreviations and acronyms (5,897)
- sports (144)
- sports abbreviations (9,333)
