Self-hosted projects tagged “Messaging”
40 open source projects with this tag
40 services found
Appwrite
Open-source backend platform for web and mobile applications
Appwrite is an open-source backend-as-a-service for building web and mobile apps with authentication, databases, storage, functions, realtime APIs, and messaging.
Mattermost
Secure, self-hosted team collaboration and messaging platform.
Open-source, self-hosted messaging platform for secure team collaboration with real-time chat, audio calls, screen sharing, and integrations.
Valkey
High-performance key/value datastore for caching and real-time workloads
Valkey is an open-source, Redis-compatible key/value datastore optimized for caching, queues, and other real-time workloads, with clustering, replication, and extensibility.
SimpleX Chat
Open-source encrypted messenger with no user identifiers
Open-source, decentralized messaging network built on a Haskell core with Kotlin Multiplatform and native iOS clients; end-to-end encrypted messaging without user IDs.
EMQX
Scalable MQTT broker and real-time messaging platform for IoT
EMQX is a high-performance MQTT broker and IoT messaging platform with clustering, security controls, a SQL rules engine, and integrations to databases and event systems.
Tinode
Instant messaging server with multi-platform clients and APIs
Tinode is an open source instant messaging platform with a Go backend, web/mobile clients, JSON WebSocket and gRPC APIs, and support for one-to-one and group chat.
Eclipse Mosquitto
Lightweight MQTT message broker
Eclipse Mosquitto is a lightweight, open-source MQTT broker supporting MQTT 5.0 and 3.1.1, plus client libraries and CLI tools for pub/sub messaging.
Centrifugo
Scalable open-source real-time messaging server for pub/sub
Open-source, Go-based real-time messaging server for pub/sub and live updates; supports WebSocket, SSE, gRPC and brokers (Redis, NATS) with official SDKs.
Janus WebRTC Server
General-purpose WebRTC media server with a plugin architecture
Janus WebRTC Server is a lightweight, general-purpose WebRTC gateway for building real-time audio/video applications via plugins and a JSON-based API.
ejabberd
Scalable real-time messaging server for XMPP, MQTT, and SIP
ejabberd is an Erlang/OTP-based messaging server providing XMPP chat and presence, MQTT broker capabilities for IoT, and SIP services for real-time communications.
Countly
Privacy-first product analytics and customer engagement platform
Open-source product analytics platform with SDKs for mobile, web and desktop; provides dashboards, events, crash reporting, messaging, A/B testing and APIs.
Synapse
Matrix homeserver for federated, secure real-time communication
Synapse is a Matrix homeserver implementation for running federated, secure real-time chat and collaboration on your own infrastructure.
VerneMQ
Distributed MQTT message broker built on Erlang/OTP
VerneMQ is a high-performance, distributed MQTT broker for scalable, highly available IoT and M2M messaging, with clustering, TLS, WebSockets, plugins, and integrations.
Ergo
Modern IRC server with integrated services and history
Ergo is a modern IRC server (ircd) written in Go, with integrated account management, history storage, bouncer-like features, and strong IRCv3 support.
Converse.js
Web-based XMPP/Jabber chat client for browsers
Converse.js is an open-source, client-side web XMPP/Jabber chat app that can run standalone or be embedded into sites, with group chat and OMEMO encryption.
Openfire
Real-time collaboration server for XMPP (Jabber) messaging
Openfire is an open source XMPP (Jabber) server for real-time messaging and collaboration, with a web admin console and a plugin ecosystem.
Dittofeed
Open-source omni-channel customer engagement and messaging automation
Developer-focused platform for automated, omnichannel messaging (email, SMS, push, WhatsApp) with low-code journeys, segmentation, templates, and self-hosting.
OpenStreetMap
Collaborative map editing website and API for global geodata
OpenStreetMap is a community-built map of the world with a web interface and APIs for editing, browsing, and accessing open geographic data.
Tox
Peer-to-peer encrypted instant messaging, calls, and file sharing
Tox is a decentralized, peer-to-peer communication system for encrypted messaging, voice/video calls, screen sharing, and file transfers without central servers.
AnyCable
Realtime server for reliable two-way communication via WebSockets and SSE
AnyCable is a realtime server for reliable two-way communication over WebSockets and SSE, designed to power chats, notifications, presence, and streaming updates for any backend.
Nextcloud Talk
Privacy-respecting, self-hosted chat and video meetings.
Self-hosted Nextcloud Talk combines chat, video calls and webinars into one secure collaboration app.
Movim
Federated blogging and chat web client for XMPP
Movim is a federated social platform and web-based XMPP client for blogging, chat, communities, and real-time messaging with a responsive cross‑platform interface.
MongooseIM
Customisable enterprise instant messaging server
MongooseIM is an open-source Erlang-based XMPP server designed for large-scale messaging, offering multi-tenant deployment, REST/GraphQL APIs, push, and robust observability.
OpenSIPS
Open source SIP proxy/server for VoIP, video, IM, and presence.
GPL-licensed SIP server/proxy for carriers, ITSPs, and enterprises, enabling scalable signaling, routing, and application integration.
Databag
Lightweight federated messenger with end-to-end encryption
Self-hosted, lightweight federated messenger with end-to-end encrypted threads and optional WebRTC audio/video calling across independently hosted nodes.
InspIRCd
Modular C++ IRC server for modern IRC networks
InspIRCd is a modular, lightweight Internet Relay Chat (IRC) server with a flexible module system, designed for stable and performant IRC network deployments.
MyBB
Free, open-source forum software for managing online communities
MyBB is a PHP-based, open-source forum platform with plugins, themes, moderation tools, private messaging and multi-database support.
Quassel IRC
Distributed, cross-platform IRC client with detachable core
Modern, cross-platform IRC client with a detachable core for persistent connections, multi-client access, and searchable chat backlogs.
ngIRCd
Lightweight, portable IRC server for small or private networks
ngIRCd is a free, portable and lightweight IRC server for small/private networks, supporting IPv6, TLS, server linking, and optional PAM authentication.
Snikket
Open-source XMPP messaging server with encrypted chat and WebRTC
Self-hosted, open-source XMPP-based messaging server providing end-to-end encryption, multi-device sync, federation, secure backups, and integrated WebRTC audio/video calling.
