Team Chat & Messaging
15 self-hosted open source alternatives in this category
15 self-hosted open source alternatives in this category
15 services found

Secure team messaging with channels, DMs, and omnichannel support
Self-hosted team chat platform with channels, DMs, voice/video, rich integrations, and omnichannel customer support features.


Secure team messaging for technical and operational teams
Self-hostable team chat with channels, threads, calls, integrations, and enterprise-grade security controls for organizations that need full data control.


Open-source video meetings built on WebRTC
Self-hostable video conferencing with browser-based meetings, screen sharing, chat, moderation tools, and optional end-to-end encryption.

Threaded team chat organized by topic streams
Self-hostable team chat with topic-based threading, powerful search, and integrations for engineering and communities.


Self-hosted push notifications with apps and API
Gotify is a self-hosted push notification server with a web UI, Android client, and REST API for sending messages from scripts, services, and monitoring tools.

Private messaging without user IDs or phone numbers
Privacy-first messenger using SimpleX relays and end-to-end encryption, designed to avoid user identifiers, phone numbers, and centralized identity.


Low-latency, high-quality voice chat with server-based channels
Open-source VoIP voice chat with low latency, positional audio, access control, and a self-hostable server (Murmur) for teams and communities.

Modern web IRC client with multi-network support
A self-hosted, browser-based IRC client with persistent connections, multi-user access, theming, and extensibility via plugins.


Matrix homeserver for decentralized, federated messaging
A Matrix homeserver that powers federated real-time chat with accounts, rooms, APIs, and integrations for clients like Element.


Embeddable XMPP web chat client for websites and platforms
Converse is an open-source, browser-based XMPP/Jabber chat client you can embed in any site to provide 1:1 and group messaging over existing XMPP servers.


Modern IRCv3 server with integrated services
Ergo is a modern, self-contained IRCv3 server with integrated services (NickServ/ChanServ), TLS, history playback, bouncers, and extensive IRCv3 capability support.

Polyglot, high-performance WebSocket server for Action Cable
AnyCable is a scalable WebSocket server for Ruby on Rails Action Cable, offering a Go server with RPC to Rails and support for Redis and other brokers.

Peer-to-peer, serverless, ephemeral chat with E2EE
Chitchatter is a serverless, peer-to-peer chat app that uses WebRTC and end-to-end encryption for ephemeral rooms without storing messages on a central server.

Self-hosted end-to-end encrypted chat for groups and direct messages
Databag is a self-hosted, end-to-end encrypted messenger with group chat, file sharing, and multi-device access via web and native clients.


A web-based IRC client with multi-user support
Self-hosted web IRC client for individuals or teams with multi-user accounts, bouncer-like always-on connections, and a modern browser UI.
