Did you know? The OTRS Group recently announced important open source strategy changes. Learn more about these changes on the new OTRS community website.

Welcome to OTRS Documentation.   Manuals & API docs   Learn more about OTRS   Download OTRS

All public repositories of OTRS can be found at github, for example the OTRS framework itself.


We are glad about all contributions that you may want to make. Please note that you need to accept the OTRS contributor agreement (CLA) once. This effectively means that you transfer the copyright of the code to OTRS — see this blog entry for a discussion of when and why it is good for open source projects to use a CLA. Please print and sign this document and send us the scan and your github username.

While the administrator's manual has lots of information about how to setup, use and tune OTRS, there is also a developer's manual that goes into the details of OTRS development. It can tell you how to setup a development environment and how you can contribute to OTRS.

The contributing section also has information about the OTRS code style guide that you should read and follow. We also recommend that you checkout and use the OTRSCodePolicy module. You can run this manually on your code and/or register it as a git commit hook that will perform the checks every time that you commit. Please see the module documentation for details. Using this module before sending a pull request is mandatory.

There is also a debugging/analysis module that can help developers in their work: Fred. It has several helpful tools like an SQL log module, a STDERR log module, JSLint based JavaScript code style verification and a simple HTML best practice checker.

If you have any questions, please don't hesitate to ask on the developer's mailing list.


The current maintenance branch of OTRS is rel-5_0. All bugfixes should be applied to this branch. New features will not be accepted in a stable branch but should be directed to the master branch instead.

Translating OTRS

Translators should use Transifex to translate OTRS. We have summarized all you need to know about translating the OTRS Help Desk or the OTRS Documentation.

Professional Services for OTRS

We offer best professional support from the OTRS team, reliable OTRS security and regular free updates as well as an exclusive set of additional Business Features that you can flexibly activate or deactivate according to different deployment scenarios.

The OTRS Group offers specific training programs in different countries. You can either participate in one of our public OTRS Administrator training seminars which take place regularly, or benefit from an inhouse training seminar that covers all the specific needs of your company.