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.

Notion - All-in-one workspace. One tool for your whole team. Write, plan, and get organized.

Airborn - Create and edit documents online without sacrificing your privacy

Walling - Walling is your visual space to capture ideas and organize projects.

Bit.ai - Bit is a smart real-time document collaboration platform for teams to create interactive documents, manage digital content and track document insights.

Nuclino - Nuclino works like a collective brain, helping teams bring all their knowledge, docs, and projects together in one place. It's a modern, simple, and blazingly fast way to collaborate.