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Zammad vs UVdesk Open Source: catalog facts
Zammad	UVdesk Open Source
Free The self-hosted community edition is free; hosted plans are sold separately.	Free The open source edition is free to download and self-host.
Linux, Web, Self-hosted	Web, Self-hosted
Packages for Debian, Ubuntu and CentOS plus Docker Actively released	Email piping turns messages into tickets Built-in knowledgebase and automated workflows
Server runs on Linux only Heavier to set up than simple PHP help desks	Needs a PHP and MySQL server to run Customization assumes familiarity with Symfony
Self-hosted	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.