Openfire
The premium Open Source alternative to Slack
🎯 Best for:Large organizations needing a secure, internal messaging infrastructure.
What is Openfire?
A cross-platform real-time collaboration server based on the XMPP (Jabber) protocol. It provides a centralized management console for enterprise instant messaging, supporting thousands of concurrent users.
Tech Stack
JavaTeam Collaboration
Why Openfire?
- • Robust LDAP integration
- • Extensive plugin ecosystem
- • Proven scalability for years
Limitations
- • Java memory overhead
- • Admin UI feels dated
- • Complex cluster configuration
3/5/2026
Last Update
1,403
Forks
40
Issues
Apache-2.0
License
Financial Leak Detected
Stop the "SaaS Tax"
Your team could be burning cash. Switching to Openfire instantly boosts your runway.
Competitor Cost
-$1,050
/ year (est. based on Slack)
Self-Hosted
$0
/ year
Team Size10 Users
150+
SAVE 100%