Silicon Valley Dictionary - Urban dictionary meets Silicon Valley
WordNet - WordNet® is a large lexical database of English.
Reverse Dictionary - Describe a concept and get back a list of words
Artha - Artha is a handy thesaurus based on WordNet with distinct features like global hotkey look-up...
Dictionary Anywhere - Dictionary Anywhere is an open-source and easy-to-use browser extension for Mozilla Firefox and Google Chrome that allows you to check definitions easily while browsing the web.
Power Thesaurus - Power Thesaurus is a fast, comprehensive and easy-to-follow online thesaurus for writers...