Better Notes - Simple notes app that ties notes together with #hashtags
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.
Standard Notes - A safe place for your notes, thoughts, and life's work
Bit.ai - Bit is a smart real-time document collaboration platform for teams to create interactive documents, manage digital content and track document insights.
YourNote - Notes app that puts privacy first
Airborn - Create and edit documents online without sacrificing your privacy