head to head · open source
Buzz vs Openfire
Buzz has 33,508 GitHub stars, 4,389 forks, 3,556 open issues and last shipped yesterday. Openfire has 3,064 stars, 1,404 forks, 53 open issues and last shipped 3 days ago. Buzz leads on adoption by 994% (33,508 vs 3,064 stars). Buzz is written in Rust under Apache-2.0; Openfire is written in Java under Apache-2.0. Buzz has attracted 13% as many forks as stars, Openfire 46%. Buzz was the more recently maintained of the two, and both are self-hostable with no licence fee.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| Buzz | Openfire | |
|---|---|---|
| GitHub stars | ★ 34K | ★ 3.1K |
| License | Apache-2.0 | Apache-2.0 |
| Written in | Rust | Java |
| Last push | 2026-09-17 | 2026-09-15 |
| Forks | ⑂ 4.4K | ⑂ 1.4K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Buzz if
- You weight community size — 34K stars and counting
- You want the Apache-2.0 license terms
- Your stack matches Rust
- You value the larger contributor base for long-term maintenance
pick Openfire if
- You want the Openfire feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Java
- You evaluated both and Openfire fits your workflow better
About Buzz
Buzz is a self hostable workspace platform where humans and AI agents collaborate in shared rooms, using a single Nostr based event log as the underlying data model. It unifies team chat, project management, and agent automation into one coherent interface, replacing fragmented tools with a unified protocol for events like messages, code patches, CI results, workflow steps, and approvals. Built in Rust and licensed under Apache 2.0, it runs as a single relay deployment per community or as a multi tenant hosted service sharing infrastructure while preserving strict community boundaries.
About Openfire
Openfire is an open source real time collaboration (RTC) server for XMPP, also called Jabber, written in Java under the Apache License 2.0 and maintained as an Ignite Realtime community project for organisations and administrators that want to run their own instant messaging infrastructure.
read the full Openfire overview →
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Frequently asked questions
Is Buzz or Openfire more popular?
Buzz has 33,508 GitHub stars and Openfire has 3,064. Buzz has the larger community by that measure.
Are Buzz and Openfire free?
Both are open source. Buzz is licensed under Apache-2.0 and Openfire under Apache-2.0. Neither carries a licence fee.
What is the difference between Buzz and Openfire?
Buzz is written in Rust and Openfire in Java. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, Buzz or Openfire?
Choose Buzz if you want the larger community (33,508 stars) or its Apache-2.0 licence terms. Choose Openfire if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.