Compare software

iTop vs Zammad: catalog facts
iTop	Zammad
Free Free and open source, with commercial offerings from Combodo.	Free The self-hosted community edition is free; hosted plans are sold separately.
Web, Self-hosted	Linux, Web, Self-hosted
Combines ITSM ticketing with a CMDB Low-code customisation for different organisations	Packages for Debian, Ubuntu and CentOS plus Docker Actively released
Setup and data modelling take effort Needs your own server to host	Server runs on Linux only Heavier to set up than simple PHP help desks
Self-hosted	Self-hosted
Open source	Open source
License: AGPL-3.0	License not stated
No account 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.