Grammarly - Clear, effective, mistake-free writing everywhere you type.

Silicon Valley Dictionary - Urban dictionary meets Silicon Valley

Expresso - The award-winning Expresso editor is equally suitable as a teaching tool for the beginning user of regular expressions or as a full-featured development environment for the experienced programmer with an extensive knowledge of regular expressions.

Writefull Thesaurus - A Google Docs add-on that uses AI to give you synonyms

Writefull - Writefull provides you with the tools you need to improve the quality and consistency of your writing.

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.