head to head · open source
Zammad vs Znuny
Zammad has 6,067 GitHub stars, 1,093 forks, 451 open issues and last shipped yesterday. Znuny has 611 stars, 129 forks, 120 open issues and last shipped 5 days ago. Zammad leads on adoption by 893% (6,067 vs 611 stars). Zammad is written in Ruby under AGPL-3.0; Znuny is written in Perl under GPL-3.0. Zammad has attracted 18% as many forks as stars, Znuny 21%. Zammad was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 6 topic tags (customer-care, customer-support, helpdesk, javascript), so they are genuine substitutes rather than adjacent tools.
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
| Zammad | Znuny | |
|---|---|---|
| GitHub stars | ★ 6.1K | ★ 611 |
| License | AGPL-3.0 | GPL-3.0 |
| Written in | Ruby | Perl |
| Last push | 2026-11-02 | 2026-10-29 |
| Forks | ⑂ 1.1K | ⑂ 129 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Zammad if
- You weight community size — 6.1K stars and counting
- You want the AGPL-3.0 license terms
- Your stack matches Ruby
- You value the larger contributor base for long-term maintenance
pick Znuny if
- You want the Znuny feature set and don't need the biggest community
- You prefer the GPL-3.0 license terms
- Your stack matches Perl
- You evaluated both and Znuny fits your workflow better
About Zammad
Welcome to Zammad Are you juggling countless customer inquiries across multiple channels? Struggling to keep your support team on the same page? Or spending more time managing your helpdesk than delivering exceptional support to your customers? Zammad is your Swiss Army knife a web based, open source helpdesk and customer support platform packed with features to streamline customer communication across channels like email, chat, telephone and social media. The Software The Zammad software is and will stay open source. It is licensed under the GNU AGPLv3. The source code is available on GitHub and owned by the…
read the full Zammad overview →
About Znuny
Znuny ======= Znuny is a continuation of the ((OTRS)) Community Edition (version 6.0.30) which was declared end of life (EOL) at the end of December 2020. The primary goal for this project is to provide a maintained and stable version of the well known ticket system and improve it with new features. The second goal is to reestablish a connection to the community. License ======= The project is distributed under the GNU General Public License (GPL v3) see the accompanying COPYING file for general license information. If you need more details you can have a look here. Documentation ============= You can find…
read the full Znuny overview →
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Frequently asked questions
Is Zammad or Znuny more popular?
Zammad has 6,067 GitHub stars and Znuny has 611. Zammad has the larger community by that measure.
Are Zammad and Znuny free?
Both are open source. Zammad is licensed under AGPL-3.0 and Znuny under GPL-3.0. Neither carries a licence fee.
What is the difference between Zammad and Znuny?
Zammad is written in Ruby and Znuny in Perl. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, Zammad or Znuny?
Choose Zammad if you want the larger community (6,067 stars) or its AGPL-3.0 licence terms. Choose Znuny if its feature set, stack or GPL-3.0 licence fits better. Both are self-hostable.