Computer Desktop Encyclopedia
Longest running tech reference with over 300,000 entries
Glossary of Computer Related Terms
The following terms and definitions were collected from the web sites. Credit belongs to the original authors, especially to Peter Day, from whose glossary most of the terms were collected.
Introduction to Computer Science - Wikiversity
Online "course" with the same type of materials as an introductory class for undergraduate computer science majors. It covers software, hardware, and algorithms, and more.
Webopedia is an online dictionary and Internet search engine for information technology and computing definitions.