Open Source Team Chat & Messaging Tools using Kotlin
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 Kotlin.
Team chat with email, tasks, and docs in one workspace
Stars
Stars growing quickly over the last 30 days4,872Last commit
11 hours agoLicense
AGPL-3.0
Team chat app with inline threads, mention-based sharing, a unified inbox for chat and email, and an AI agent that works across your full workspace.
Open Source Alternative to:
Team chat, project management, and AI agents in one place
Stars
Stars growing over the last 30 days36,298Last commit
11 hours agoLicense
Apache-2.0
Workspace that combines team chat, project planning, and git management with AI agents that collaborate alongside your team on shared context.
Open Source Alternative to:
Serverless team chat over Tor, no phone number needed
Stars
2,658Last commit
5 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:
Create custom spaces to chat, game, and connect globally
Stars
Stars growing over the last 30 days2,001Last commit
22 hours agoLicense
MIT
Build your own community space for gaming, chatting, and hanging out with friends worldwide. Customize your environment for the perfect social experience.
Open Source Alternative to:
c15t – Open-source cookie banner, built for control and lightening fast modern web apps.
Windshift