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FreeScout vs Znuny: catalog facts
FreeScout	Znuny
Free Free and open source, with optional modules and installation services offered separately.	Free Free open-source software; professional services are offered separately.
Web, Self-hosted	Web, Self-hosted
Unlimited agents, tickets and mailboxes Runs on ordinary PHP and MySQL hosting	Direct continuation of OTRS Community Edition Long-term support branch alongside a feature branch
Many extra channels and features come as separate modules You maintain the server and email setup yourself	Self-hosting requires server setup and maintenance Aimed at organizations rather than individuals
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.