Self-hosted Communication - XMPP - Servers software

Extensible Messaging and Presence Protocol servers.

6 apps, ranked by GitHub stars weighted by maintenance health.

Alternatives to Slack

ejabberd

XMPP instant messaging server.

Actively maintained ★ 6.8k GPL-2.0 🐳 Docker~$5/mo

Openfire

Real time collaboration (RTC) server.

Actively maintained ★ 3.1k Apache-2.0 ~$10/mo

MongooseIM

Mobile messaging platform with a focus on performance and scalability.

Actively maintained ★ 1.8k GPL-2.0 🐳 Docker~$5/mo

Snikket

All-in-one Dockerized easy XMPP solution, including web admin and clients.

Actively maintained ★ 475 Apache-2.0 🐳 Docker~$5/mo

Tigase

XMPP server implementation in Java.

Actively maintained ★ 358 GPL-3.0 ~$10/mo

Prosody IM

Feature-rich and easy to configure XMPP server.

Health unknown MIT ~$5/mo