Grammarly - Clear, effective, mistake-free writing everywhere you type.
Google Docs - Create a new document and edit with others at the same time -- from your computer, phone or tablet. Get stuff done with or without an internet connection. Use Docs to edit Word files. Free from Google.
Typely - A sensitive, unobtrusive and reliable tool for any writer, newspaper editor, teacher, blogger or student STA
Bit.ai - Bit is a smart real-time document collaboration platform for teams to create interactive documents, manage digital content and track document insights.
Scrivener - Scrivener is a content-generation tool for composing and structuring documents.
Airborn - Create and edit documents online without sacrificing your privacy