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.

LanguageTool - Free proofreading tool for OpenOffice, LibreOffice, Firefox, and Chrome.

Adobe Acrobat DC - Make your job easier with Adobe Acrobat DC, the trusted PDF creator. Use Acrobat to convert, edit and sign PDF files at your desk or on the go.

Ginger - Powerful and effortless desktop & mobile solutions for improving your writing and productivity. Ginger Software is your personalized editor - everywhere you go.

Wondershare PDFelement - All-in-one PDF editor