Best Self-Hosted Collaboration & Communication Tools in 2026

Open-source virtual whiteboard for creating hand-drawn style diagrams and sketches.

Decentralized social network server that federates with the broader Fediverse — run your own instance instead of relying on Twitter/X.

Open-source project management platform — an alternative to Jira, Linear, Monday, and ClickUp.

Open-source scheduling infrastructure — a self-hostable alternative to Calendly for booking meetings and appointments.

The most popular self-hosted cloud platform for file storage, collaboration, and communication.

Open-source video conferencing platform — free, secure, and self-hostable.

Open-source, self-hosted project management tool — a free alternative to Trello, Notion, and Asana.

Modern, lightweight self-hosted music server compatible with Subsonic/Airsonic clients — stream your music everywhere.

Open-source kanban board built with Meteor — a free and self-hosted alternative to Trello.

Open-source real-time collaborative text editor you can self-host.

Open-source project management software — an alternative to Jira, Asana, Trello, and Monday.com.

Federated, decentralized video hosting platform built on ActivityPub.

Federated link aggregator and community discussion platform — a decentralized, self-hostable alternative to Reddit.

Open-source survey and experience management platform for product and customer research.

Self-hosted live video streaming server with built-in chat and Fediverse integration.

Open-source virtual classroom platform built for online education and webinars.

End-to-end encrypted collaborative office suite with zero-knowledge privacy.

Self-hosted office suite with real-time collaboration.

Open-source LibreOffice-powered collaborative office suite for self-hosted environments.

End-to-end encrypted group video calling built on the Matrix open protocol.

A beautiful terminal email client built with Go and Bubble Tea. An open source alternative to Superhuman and Outlook for the command line.

Straightforward realtime kanban boards for intuitive task tracking with dark mode and collaborative features.