Accountanalysis - A tool to evaluate Twitter accounts
Writefull Thesaurus - A Google Docs add-on that uses AI to give you synonyms
PrinciplesYou - Gain better self-awareness about your personality
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.
Describing Words - Find adjectives for things you're trying to describe.
Silicon Valley Dictionary - Urban dictionary meets Silicon Valley