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Alternatives to Mattermost

Mattermost is a popular software application. Here you can find self-hosted alternatives that offer similar functionality while giving you more control over your data and privacy.

Found 14 self-hosted alternatives

Conduit

A simple, fast, and reliable chat server powered by Matrix.

Social
chat server Social communication

MiAOU

Multi-room persistent chat server.

Social
open-source Social communication

Revolt

Revolt is a user-first chat platform built with modern web technologies.

Social
Social self-hosted communication

SAMA

Next-Gen self-hosted chat server and clients.

Security
Security chat server Social

SimpleX Chat

The most private and secure chat and applications platform - now with double ratchet E2E encryption. `AGPL-3.0` `Haskell`.

Security
Social Security encryption

Spectrum 2

Spectrum 2 is an open source instant messaging transport. It allows users to chat together even when they are using different IM networks.

Social
open source instant messaging cross-platform

Synapse

Server for [Matrix].

Social
Social communication collaboration

Tinode

Instant messaging platform. Backend in Go. Clients: Swift iOS, Java Android, JS webapp, scriptable command line; chatbots.

Social
instant messaging chatbots Social

Convos

Always online web IRC client.

Social
IRC Social communication

Openfire

Real time collaboration.

Media
real-time communication instant messaging Social

Converse.js

XMPP chat client in your browser.

Storage
group chat browser-based XMPP

JSXC

Real-time XMPP web chat application with video calls, file transfer and encrypted communication. There are also versions for Nextcloud/Owncloud and SOGo.

Social
encrypted communication XMPP video calls

Libervia

Web frontend from Salut à Toi. `AGPL-3.0` `Python`.

Social
web frontend Python Social

Salut à Toi

Multipurpose, multi frontend, libre and decentralized communication tool.

Social
open-source communication decentralized