Acronym Finder: The Acronym Finder is a searchable database of over 4 million acronyms, abbreviations and meanings. Covers: common acronyms, computers, science, technology, government, telecommunications, and military acronyms.
NetLingo.com contains thousands of definitions about the online world of business, technology & communication :-) Includes text messaging, acronyms and smileys!
All Acronyms Dictionary. Quickly define the meaning for all acronyms and abbreviations. Not sure how to abbreviate something or what does the particular acronym stand for? Search the All Acronyms online database for your definition
This page has definitions of most of the used acronyms/abbreviations on the internet, such as AFAIK BTW IMHO ROTFL etc. They are used primariliy on Usenet and Internet Relay Chat