#1
Open-source team chat server with topic-based threading for focused, asynchronous, and real-time communication in distributed teams.
25.8k stars10.1k forksApache-2.0last commit Actively maintained
10 self-hosted Cisco Jabber alternatives
Enterprise unified communications client providing instant messaging, presence, voice and video calling, voicemail and screen sharing. Integrates with Cisco Unified Communications Manager and Webex for call control and collaboration.
Alternatives to Cisco Jabber
#2
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.
13.5k stars2.1k forksGPL-3.0last commit Actively maintained
#3
Mumble is an open-source, low-latency VoIP voice chat platform with a desktop client and a self-hosted server for encrypted group communication.
8.2k stars1.4k forkslast commit Actively maintained
#4
Open-source PBX and telephony toolkit for building communications applications; modular C-based engine with SIP, WebRTC, RTP, ARI/AMI APIs and hardware support.
3.5k stars1.3k forkslast commit Actively maintained
#5
Openfire is an open source XMPP (Jabber) server for real-time messaging and collaboration, with a web admin console and a plugin ecosystem.
3.1k stars1.4k forksApache-2.0last commit Actively maintained
Scalable, modular XMPP/Jabber server written in Java supporting TCP, BOSH, WebSockets, federation, components, HTTP API and push notifications.
359 stars110 forksAGPL-3.0last commit Actively maintained
#7
Open-source, modular SIP server (proxy, presence, conference, B2BUA) with push gateway, ICE/STUN/TURN, MySQL/SQLite support; optimized for mobile and embedded systems.
187 stars83 forksAGPL-3.0last commit Actively maintained
Prosody IM is a modern, resource-efficient XMPP (Jabber) server written in Lua, designed to be easy to configure and extend for private messaging and federation.
Activity unknown
Open-source, API-first platform for carrier-grade IP communications: VoIP, WebRTC, messaging, conferencing and programmable telephony microservices.
Activity unknown
#10
A single-binary, low-resource Matrix homeserver in Rust; simple setup, RocksDB (default) or SQLite backends, built with axum and Ruma.
Activity unknown
What replacing Cisco Jabber actually involves
Every option on this page is open source and free to run on your own hardware, so you own the data and there is no subscription to cancel. 7 of 10 shipped a commit in the last six months. Licences in this list: Apache-2.0, GPL-3.0, AGPL-3.0. In exchange you take on hosting, backups and updates yourself.
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