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Znuny vs Frappe Helpdesk: catalog facts
Znuny	Frappe Helpdesk
Free Free open-source software; professional services are offered separately.	Free Free and open source to self-host, with managed hosting available through Frappe Cloud.
Web, Self-hosted	Web, Self-hosted
Direct continuation of OTRS Community Edition Long-term support branch alongside a feature branch	No per-agent pricing SLA targets with automated escalations
Self-hosting requires server setup and maintenance Aimed at organizations rather than individuals	Runs on the Frappe Framework stack, which adds setup work for newcomers Mobile access is a progressive web app rather than native apps
Self-hosted	Self-hosted, Hosted service
Open source	Open source
License not stated	License: AGPL-3.0
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 October 2, 2026

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