Openfire

The premium Open Source alternative to Slack

🎯 Best for:Large organizations needing a secure, internal messaging infrastructure.
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Apache-2.0License

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%

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