Matrix is described as 'Open protocol for decentralized, end-to-end encrypted communication supporting instant messaging, VoIP, IoT, data persistence, and silos bridging over federated servers' and is a very popular instant messenger in the social & communications category. There are more than 100 alternatives to Matrix for a variety of platforms, including Android, Web-based, Linux, Windows and Mac apps. The best Matrix alternative is Signal, which is both free and Open Source. Other great apps like Matrix are Element, Telegram, Discord and Pidgin.
Empathy is a messaging program which supports text, voice, video chat, and file transfers over many different protocols. You can tell it about your accounts on all those services and do all your chatting within one application.
Colibri is an open source chat platform built on the AT protocol for communities big and small. It gives you the ability to create communities, manage members, and communicate through text, voice, and forum channels, all while maintaining true ownership of your data.
Unlimited public or private chat rooms with full search, GitHub-based authentication, file and code sharing, flexible integrations with popular developer tools, admin controls, guest access, multi-platform support, data export, and ad-free collaboration spaces.
Chat with anyone on X in a private, focused space built for conversation. No ads. No tracking. Fully end-to-end encrypted.
ejabberd is an open source Jabber/XMPP server designed from the ground up to be the building bricks of highly critical messaging systems. Designed to be massively scalable, it is used to power web scale deployments across many software industries.
GameVox is a voice, video, and text chat platform for gaming communities, built by LightSpeed Gaming — a small, independent company with well over a decade of experience in voice communication and game server hosting. Self-funded. No investors, no ads, no data sales.
Real-time chat platform structured with threads, custom feeds, project tagging, and AI moderation. Provides privacy controls, instant file and code sharing, multiple viewing modes, moderator tools, light/dark modes, and unifies collaboration for organizations and communities.
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