Excalidraw
Open-source hand-drawn style whiteboard with shared sessions.
Open-source
Open-source Team Collaboration tools
5 open-source team collaboration products on MintedSaaS — self-hostable or source-available alternatives, checked daily for reachability.
Jitsi Meet
Open-source video conferencing you can self-host.
Element
Decentralised Matrix-based messenger for secure team chat.
Rocket.Chat
Open-source communication platform with chat and channels.
Mattermost
Open-source team chat alternative built for self-hosting.