Dictionaries

Acronym & Abbreviation
AcronymFinder.com
Astronomy Dictionary
Computing Dictionary
Computing Terms
Difficult Words
Glossary of Genetic Terms
Japanese-English Dictionary
Legal Dictionary
Object Graph Dictionary
One Look Dictionaries
OneLook Reverse Dictionary
Visual Thesaurus
Your Dictionary
Webster Dictionary
Word Web - Free dictionary that works with Msword and other apps

Encyclopedias

Bartleby
TechEncyclopedia
Webopedia
What is.tech target
World Fact Book