General

• Acronym Finder - Archive containing over 750,000 human-edited definitions

• The Internet Acronym Server - A database of user-submitted acronyms; has been collecting acronyms since 1988

• Acronyms and Initialisms - Relevant, up-to-date explanation of the differences between these closely related terms

• Acronym Creator - A powerful tool which takes words relating to a new product, thing, idea, etc., and comes up with related acronyms

Specific Acronym Lookups

• TUCAA - The Ultimate Computer Acronyms Archive - Large, searchable database of user-submitted computer-related acronyms

• Medical Abbreviations - Searchable repository of over 200,000 acronyms used in the medical, biotech, pharmaceutical, and healthcare industries

• Netlingo - Huge list of Internet and text message abbreviations, many very obscure