OTRS comprises the leading open source Help Desk software OTRS Help Desk and the leading open source ITIL® V3 compliant IT Service Management software OTRS ITSM. OTRS is licensed under the Affero General Public License V3 (AGPL) that ensures you can download, install, use, and modify the software at no cost.

OTRS Group is the company that created OTRS. We provide design, configuration, installation and training services around the OTRS Help Desk software and OTRS IT Service Management software. We also offer cloud-based managed hosting, subscription support services, and customization for OTRS.