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.
Reverse Dictionary - Describe a concept and get back a list of words
Silicon Valley Dictionary - Urban dictionary meets Silicon Valley
Power Thesaurus - Power Thesaurus is a fast, comprehensive and easy-to-follow online thesaurus for writers...
Synonymful - Improve your vocabulary and communicate like a pro.
Spell It Out - Spelling out tech acronyms so you can be in the know.