Webopedia is a free online dictionary for words, phrases and abbreviations that relate to computer, Internet and technology. Webopedia provides definitions in plain language so non-tech people can easily understand the technical definition. The definitions on Webopedia evolve and change as technologies change, so the definitions are frequently updated to reflect trends in the field with new definitions included daily.

FOLDOC is an excellent dictionary resource of computing terms including other computing-related fields. The dictionary has been growing since 1985 and now contains over 14000 definitions.  Entries are cross-referenced to each other and to related resources elsewhere on the Internet. Words can either be searched or browsed from relevant categories. A handy translate text option is also available on-site.

TechDictionary is the online computer dictionary with search facilities for thousands of computer and technology words, text messaging meanings, IM, chat, SMS, abbreviations and acronyms meanings. Search by technical terms or by keywords. Included are; computer, Internet and telecommunications terms, acronyms, emoticons or smilies, chat abbreviations, filename extensions, HTML tags, and domain suffixes.

The Computer User Technology Dictionary is one of the most comprehensive high-tech  dictionary on the web today. Search technological word definitions by either using convenient search facilities or browse technology word meanings by using the alphabetical index panel. Latest technology definitions are added and updated on a regular basis.