Open Source Team Chat & Messaging Software
Team Chat & Messaging software provides a centralized environment for real-time text, voice, and video communication. These tools organize conversations into threads or channels to prevent information loss during asynchronous work. This type of software serves organizations and communities that need to manage their own chat logs and member directories. By hosting these apps on private infrastructure, you ensure that sensitive internal discussions and metadata remain on your own hardware. This approach removes reliance on external service providers for the storage of company messages.
This page lists 44 open source tools in the Team Chat & Messaging category. The most popular are Rocket.Chat, Mattermost and Zulip. Most use the Apache-2.0 or AGPL-3.0 license, and 30 offer an official Docker image.
Tuwunel
A high performance Matrix homeserver written in Rust for scalable and low cost communication infrastructure.
Mattermost
Provides a native desktop interface for secure team collaboration and communication across Windows, Mac, and Linux.
ZNC
An IRC bouncer that keeps users connected to networks and buffers messages while offline.
MongooseIM
An XMPP server designed for large installations that supports clustering and multiple client connection methods.
Mezon
A communication platform for communities and teams featuring encrypted messaging, voice calls, and AI moderation tools.
Databag
A federated, self-hosted messenger featuring end-to-end encryption and topic-based threads for secure, decentralized communication.
InspIRCd
A high performance Internet Relay Chat server supporting the IRCv3 protocol for various operating systems.
Kiwi IRC
A versatile web based messenger that provides a modern interface for connecting to IRC networks.
Glowing Bear
A modern web frontend for the WeeChat IRC client that enables access via any web browser.
Quassel IRC
A distributed IRC client that allows multiple graphical interfaces to connect to a central core server.
ngIRCd
A portable and lightweight Internet Relay Chat server designed for small or private networks.
Ethora
Provide real-time messaging, AI bots, and digital wallet integration through a cross-platform SDK and server.
UnrealIRCd
An advanced open source IRC server with a focus on modularity, security, and extensive configuration options.
Valour
A community communication platform featuring multi-window chat, integrated economy systems, and a decentralized node architecture.
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