Grammarly - Clear, effective, mistake-free writing everywhere you type.
Superfy - Awesome answers from awesome people
LanguageTool - Free proofreading tool for OpenOffice, LibreOffice, Firefox, and Chrome.
Wisdo - Learn from people who’ve been there
Editsaurus - Highlights potential pitfalls in your writing to encourage good habits.
Riverside.fm - 🎙 Easily to record remote podcasts and video interviews that look and sound like they were recorded in a professional recording studio.