Reverse Dictionary - Describe a concept and get back a list of words
Urban Dictionary Random Word - Random word when you open a new tab in Chrome
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.
Words For That - the reverse-Urban Dictionary of the internet
Writefull Thesaurus - A Google Docs add-on that uses AI to give you synonyms
Cheddar Up - Collect Money From Groups