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Discover open-source software you can host on your own servers. Take control of your data and infrastructure.
Showing 134 Communication self-hosted open-source projects
An open-source email alias service to protect your online identity by creating disposable email addresses.
HumHub is an Open Source Enterprise Social Network. Easy to install, intuitive to use and extendable with countless freely available modules.
Robust, Ubiquitous and Massively Scalable Messaging Platform (XMPP, MQTT, SIP Server)
A modern, responsive, cross-platform, self-hosted web IRC client that stays connected.
A composable, all-in-one mail server that implements SMTP, IMAP, DKIM, SPF, DMARC, and more in a single daemon.
A modern, full-featured, secure mail server designed for low-maintenance self-hosted email.
A collaborative web application (virtual office) presented as a 16-bit RPG video game
comment engine
A fast, highly extensible, and event driven SMTP server
a Disqus alternative
FreeSWITCH is a Software Defined Telecom Stack enabling the digital transformation from proprietary telecom switches to a versatile software implementation that runs on any commodity hardware. From a Raspberry PI to a multi-core server, FreeSWITCH can unlock the telecommunications potential of any device.
Anonymous email forwarding
🚀 Open-source, self-hosted P2P WebRTC video conferencing for fast, private real-time communication. Create browser-based meeting rooms with no downloads or time limits, plus screen sharing, chat, whiteboard, recording, and collaboration.
Synapse: Matrix homeserver written in Python/Twisted + Rust
A private, fast, and lightweight front-end for Reddit written in Rust, with no JavaScript, ads, or tracking.
The official Asterisk Project repository.
Next generation noIM application in your own workspace, not only another Slack/Discord/Rocket.chat
Mail hosting made simple
The extensible chat client.
A modern IRC server (daemon/ircd) written in Go.
Web-based XMPP/Jabber chat written in JavaScript
🏆 Self-hosted, open-source WebRTC video conferencing platform for real-time communication and collaboration. A modern alternative to Zoom, Google Meet, Jitsi Meet, and Microsoft Teams, powered by scalable SFU architecture with Mediasoup.
Jitsi Videobridge is a WebRTC compatible video router or SFU that lets build highly scalable video conferencing infrastructure (i.e., up to hundreds of conferences per server).
An XMPP server licensed under the Open Source Apache License.
Kamailio - The Open Source SIP Server for large VoIP and real-time communication platforms, focusing on flexibility, security and scalability
Keep passwords and other sensitive information out of your chat logs and inboxes.
Misago is fully featured modern forum application that is fast, scalable and responsive.
The future of online communications.
Official successor to conduwuit
Deploy Stoat on your own infrastructure!
An open-source online collaborative whiteboard for real-time drawing, teaching, and design.
A collaborative decision-making tool for organizations to discuss proposals and reach consensus.
Realtime server for reliable two-way communication to power-up any backend
🌌 Your Self-hosted Comment System. | 自托管评论系统
Secure peer-to-peer chat that is serverless, decentralized, and ephemeral
Open Source Newsletter Tool.