Open Source Team Chat & Messaging Tools using nvm
A curated collection of the best open source platforms for real-time team messaging, with channels, direct messages, threads, file sharing, and app integrations. using nvm.
Secure collaboration platform for mission-critical work
Stars
38,949Last commit
3 hours agoLicense
Unknown
Mattermost provides a flexible, open-source platform for secure team collaboration, designed for organizations with strict security and privacy requirements.
Open Source Alternative to:
Open source messaging with privacy and community focus
Stars
10,141Last commit
3 hours agoLicense
AGPL-3.0
Free, open-source instant messaging and VoIP platform with full Markdown support, voice/video calls, moderation tools, and self-hosting options for communities.
Open Source Alternative to:
Serverless team chat over Tor, no phone number needed
Stars
2,641Last commit
4 days agoLicense
GPL-3.0
Quiet is a peer-to-peer messaging app that syncs messages directly between devices over Tor, with no central server, no phone number required, and no metadata leaks.
Open Source Alternative to:
Transform team email into efficient collaborative workflows
Stars
1,757Last commit
7 months agoLicense
AGPL-3.0
Streamline team communication with shared inboxes, unlimited email addresses, and customizable workflows. Perfect for modern businesses seeking organized email management.
Open Source Alternative to:
Secure open source messaging for professional teams
Stars
163Last commit
5 hours agoLicense
AGPL-3.0
Free Matrix-based messenger with end-to-end encryption, multi-platform bridges, and on-premise deployment. Connect across 30+ networks securely.
Open Source Alternative to:
CodeRabbit – The leading AI Code Review platform. Ship better quality code in 50% less time, with 90% fewer bugs.
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