Firepad - Open source collaborative code and text editing that relies on Firebase for real-time data...
Microsoft 365 - Boost your productivity with reliable access anywhere with services like email, calendar, file sharing, meetings, instant messaging, and Office Online
CryptPad - CryptPad is a collaborative office suite that is end-to-end encrypted and open-source.
Apache OpenOffice - Apache OpenOffice is an open source, office document productivity suite.
eduPad - Real-time collaborative text-editor. No account required. Edits highlighted in authors color.
SSuite Office - SSuite Office is called to be one of the most accomplished software developers for both beginners and professionals alike.