BABEL: A Glossary of Computer Oriented Abbreviations and Acronyms
Computer Almanac A collection of numbers relevant to computers, along with references
The Computer Museum History Center
Crypto Glossary and Dictionary of Technical Cryptography
Dictionary of Algorithms, Data Structures, and Problems
FAQ for Scientific Computing, Numerical Analysis and Associated Fields
Free On-Line Dictionary of Computing
Glossary of Internet Terms
netlingo
New Hacker's Dictionary
PC Guide
Tech Encyclopedia
Virus Encyclopedia From Symantec
Virus Encyclopedia From antivirus.com
Web Dictionary of Cybernetics and Systems
Webopaedia
Webreference
What is? IT-specific encyclopedia
Wiley Encyclopedia of Electrical and Electronics Engineering