Zammad
Zammad is a web based open source helpdesk/customer support system (by zammad)
OTRS
((OTRS)) Community Edition is one of the most flexible web-based ticketing systems used for Customer Service, Help Desk, IT Service Management. Please note that ((OTRS)) Community Edition offers limited OTRS functionality. (by OTRS)
| Zammad | OTRS | |
|---|---|---|
| 54 | - | |
| 4,941 | 766 | |
| 1.5% | - | |
| 9.9 | 7.2 | |
| 5 days ago | over 4 years ago | |
| Ruby | Perl | |
| GNU Affero General Public License v3.0 | GNU General Public License v3.0 or later |
The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
Zammad
Posts with mentions or reviews of Zammad.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2025-05-19.
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6 Best Open-Source Ticketing Systems for 2025
🔗 GitHub: https://github.com/zammad/zammad
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Show HN: Libredesk – open-source customer support desk. Single binary app
I don't know how lightweight you're looking for, but you might also want to have a look at Zammad: https://github.com/zammad/zammad I worked with a self-hosted deployment of it before, and it was reasonably low-maintenance.
- The 50 best open-source alternatives to popular SaaS software
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An open-source ticketing system
Zammad is very easily the best free and open-source ticket system, but just to avoid confusion: The .com link is for the commercial Zammad offering with support or as a hosted SaaS. The free version you have to self-host is under the .org site: https://zammad.org/
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MSP opensource ticketing tool -ITSM
https://zammad.org/ it cery customizable and has a fsitly good documentation
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Ticketing system for internal IT team
Zammad, open-source, free (when self-hosted): https://zammad.org/. Also has a knowledge base for you to provide to your users.
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Jira Service Desk Alternative (Open Source ticketing tool)
The Redmine fork OpenProject (/r/openproject) is pretty okay for ticketing and Zammad is pretty neat too.
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Free Service Desk Software
why don't you guys know Zammad? An open-source helpdesk platform which I am using smoothly.
- Zugriff für ca. 20 Externe auf ein Postfach
- Minimalist Ticketing System
OTRS
Posts with mentions or reviews of OTRS.
We have used some of these posts to build our list of alternatives
and similar projects.
We haven't tracked posts mentioning OTRS yet.
Tracking mentions began in Dec 2020.
What are some alternatives?
When comparing Zammad and OTRS you can also consider the following projects:
FreeScout - FreeScout — Free self-hosted help desk & shared mailbox (Zendesk / Help Scout alternative)
osTicket - The osTicket open source ticketing system official project repository, for versions 1.8 and later
GLPI - GLPI is a Free Asset and IT Management Software package, Data center management, ITIL Service Desk, licenses tracking and software auditing.
MantisBT - Mantis Bug Tracker (MantisBT)
Request Tracker - Request Tracker, an enterprise-grade issue tracking system