Dictionary of PC Hardware and Data Communications Terms
"This comprehensive dictionary provides complete descriptions of complex terms in two of the most volatile and interesting areas of computer development: personal computers and networks. It contains up-to-date information about everything from a common item like 'batteries' to an obscure font technology called 'Speedo.'"
http://www.ora.com/reference/dictionary

Free on-line dictionary of computing
"In the words of its creator: "The FOLDOC is a searchable dictionary of acronyms, jargon, programming languages, tools, architectures, operating systems, networking, theory, mathematics, telecommunications, institutions, companies, projects, products, history, in fact anything to do with computing."
http://www.foldoc.org

Glossary of Internet Terms
"Brief definitions of Internet-related terms."
http://www.matisse.net/files/glossary.html

TECHtionary
"TECHtionary is the world¹s first animated dictionary on telecommunications, data networking and internet technology." This site is geared to more advanced users and for people who are studying telecommunications and networked computing. Flash 5 plug-in required for viewing."
http://www.techtionary.com/

Dr. Watson
"Checks the HTML, load time, spelling, and other features of your web site"
http://watson.addy.com/

Web Developer's Virtual Library
"The original encyclopedia of Web technology, The WDVL is a comprehensive, standards-oriented content site, for Webmasters, Web designers, and Internet developers."
http://www.wdvl.com/

The Internet Public Library
http://www.ipl.org/