Você pode usar o Google Docs , o aplicativo Planilhas Google:
If you’re using Google Docs, Sheets, Slides, Forms, or Drawings, you and others with access to a file can make edits to that file at the same time. In Docs, Sheets, Slides, and Drawings, you’ll be able to see what others are up to keystroke by keystroke, and they’ll be able to see what changes you’re making as you make them.
Real-time collaboration is available only when you and your collaborators are online. If you are working on a file that has been created or modified in "My Drive," you can go back to track activity of that file at a later date to see what changes have been made.
Fonte: Ajuda do Google Docs