دانشنامه
1. wikipedia
Wikipedia is a multilingual, Web-based, free content encyclopedia project. Wikipedia's articles provide links to guide the user to related pages with additional information
Containing nearly 51,000 entries (marshalling six and one-half million words on a vast range of topics), and with more than 80,000 hypertext cross-references, the current Sixth Edition is among the most complete and up-to-date encyclopedias ever produced
This LoveToKnow Classic Encyclopedia project works to bring to you the renowned 1911 Edition of the Encyclopaedia Britannica
۴. encarta
More than 42,000 articles on the world of knowledge--from aardvark to zither. Historic documents, famous speeches, literary excerpts, and more. Perspectives on authors, characters, and themes of renowned works of literature. Year-by-year wrap-up of important events from 1938 to 1999
S9.com was established in 1997. The dictionary covers more than 33,000 notable men and women who have shaped our world from ancient times to the present day
۶. Encyclopedia Britannica Online
Featuring the complete Encyclopedia Britannica, Britannica Concise Encyclopedia, Merriam-Webster's Dictionary & Thesaurus, videos, web sites, and magazines, Encyclopedia Britannica Online brings together the world-renowned content of the encyclopedia, with the speed and convenience of the Internet
