Alternatives to Holst

Online collaborative whiteboard platform

Messaging and calling application

Desktop client for the Zulip team chat platform

Official desktop client for Rocket.Chat

Privacy-first, open-source platform for knowledge sharing and management

Collaborative note-taking app

Interactive whiteboard application

Teamwork app by Alibaba Group

Note editor and whiteboard

Collaboration and diagramming tool

Note taking app

Team communication and collaboration software