Reverse Dictionary - Describe a concept and get back a list of words
Synonymful - Improve your vocabulary and communicate like a pro.
Silicon Valley Dictionary - Urban dictionary meets Silicon Valley
Stacknote - Make your writing surprisingly efficient
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.
Mighty Mink Autocorrector - Autocorrector for Google Docs, Slides & Sheets