Reference
It's one thing to have an encyclopedia and quite another to have software that combines a couple of those. Such software usually gives you more options and better and easier search engine. Check out this software category, read reviews on these education applications, take a pick, and download instantly.
WXTide32
Bengali to English Talking Dictionary
Transmiti
InstaVerse
Freelang Dictionary
Wanem Hindi Dictionary
SlovoEd Classic English-German
FREE English-French Translator
MB Free Dream Dictionary
Scholar's Aid Lite
Virtual Robotics Toolkit
Isher Micro Media
SlovoEd Deluxe Italian-Russian
iFinger
JWPce
Citavi
Eurodict Bulgarian French Dictionary
MapSphere
Wikipedia
Watchtower Library 2015 - English
GoldenDict
eWork
WordNet
WinThesaurus
Babylon Translator
WordsGalore
SlovoEd Deluxe German-Russian
EndNote
Discover FDM
Add-on support
You can get add-ons that download files/video from arbitrary websites.