Mate Translate - Ultimate translation app for Mac, iOS, Chrome and many more
Silicon Valley Dictionary - Urban dictionary meets Silicon Valley
Google Translate - Google's free service instantly translates words, phrases, and web pages between English and over 100 other languages.
FoxType Thesaurus - Visualize similar words for _____
iTunes - Media player, media library, Internet radio broadcaster, and iPhone device management application
Writefull Thesaurus - A Google Docs add-on that uses AI to give you synonyms