Open Source Collaboration & Communication Tools Projects

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

Open-source knowledge base combining note-taking, whiteboard, and project planning in one workspace.

Open-source Q&A platform for communities, help centers, and internal team knowledge bases, with voting, reputation, and a plugin system.

BigBlueButton is an open-source web conferencing platform built for online learning. Whiteboard, breakout rooms, and live polls make classes feel real for remote and hybrid teams.

Open-source visual bookmarking: save images to boards, follow Fediverse accounts, and share collections — no ads, no algorithm.

Open source AI-powered omnichannel customer service platform that combines live chat, ticketing, and team collaboration as an alternative to Slack, Zendesk, Intercom, and HubSpot.

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

A self-hosted chat application for teams and communities with video calls, voice calls, and screen sharing.

Open source, local-first Slack and Notion alternative that puts you in control of your data with offline support and end-to-end encryption.

Collabora Online is a powerful open-source office suite built on LibreOffice. Edit documents, sheets, and slides together in self-hosted environments with full file compatibility.

CryptPad is an end-to-end encrypted, zero-knowledge collaborative office suite. Write, edit, and share documents, sheets, and code with confidence that servers never read them.

Decentralized private messenger using email infrastructure for secure, end-to-end encrypted communication.

Open source community forum platform combining long-form discussion, real-time chat, and strong moderation. Self-host it or use managed hosting.

Open-source Matrix client for secure, decentralized messaging, voice, and video — runs on your own server.

Element Call delivers end-to-end encrypted group video and voice calls built on the open Matrix protocol. No accounts, no tracking, fully self-hostable, and ready for serious team use.

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

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

Focalboard is an open-source, self-hosted project management tool — a free alternative to Trello, Notion, and Asana for boards, docs, and team planning across every workflow.

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

Privacy-first Android dialer with call blocking, multi-SIM support, and no ads or tracking.

All-in-one open source platform that combines project management, CRM, chat, HR, and wiki as an alternative to Linear, Jira, Slack, and Notion.

Open source disposable email testing server with built-in SMTP, POP3, REST, and web interfaces — no database required.

Jitsi Meet is a free, secure, open-source video conferencing platform you can use in the browser or self-host. No account is required to join, share, or record any meeting at all.

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

Lightweight, Google-searchable open source Slack and Discord alternative designed for online communities.