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Request Tracker vs Zammad: catalog facts
Request Tracker	Zammad
Freemium Open-source software is free to self-host; hosted plans are available.	Free The self-hosted community edition is free; hosted plans are sold separately.
Web, Self-hosted	Linux, Web, Self-hosted
Handles tickets entirely by email or web Highly customisable workflows and extensions	Packages for Debian, Ubuntu and CentOS plus Docker Actively released
Setup and customisation take administrator effort Hosted plans go through sales	Server runs on Linux only Heavier to set up than simple PHP help desks
Self-hosted, Hosted service	Self-hosted
Open source	Open source
License not stated	License not stated
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 23, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.