1.
ForeignWord.com
A collection of links to online dictionaries, automatic translators, language and translation news. Includes a translator directory, language forums, and the Xanadu translation wizard to help you automatically access dozens of online dictionaries as well as translation services.
2. Languages on the Web
This site provides links to online language-related resources for dozens of languages. Resources include dictionaries, grammars, newspapers, courses and tutorials, bilingual texts and parallel translations. There are also links to the Web sites of schools, institutions, and organizations that focus on the study of languages.
3. yourDictionary.com
"yourDictionary.com (YDC) was founded in 1999 to provide the world's most comprehensive, and authoritative portal for language, and language-related products and services on the world wide web. yourDictionary.com has the widest and deepest set of dictionaries on the web (more than 1500 dictionaries representing more than 230 languages."