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ISPConfig vs Virtualmin: catalog facts
ISPConfig	Virtualmin
Free Free and open source; enterprise support is available separately.	Freemium The GPL edition is free; Virtualmin Pro is a paid edition with extra tools.
Linux, Web, Self-hosted	Linux, Web, Self-hosted, Command line
Manages multiple servers and mirrored clusters from one panel Covers web, mail, FTP, DNS and databases	Manages web, mail, DNS, databases, SSL and backups in one panel Web UI, CLI and remote API
Linux servers only Billing is a separate add-on module	Linux servers only Container and WordPress tooling require the paid Pro edition
Self-hosted	Self-hosted
Open source	Open source
License not stated	License: GPL-3.0
Not stated if an account is needed	No account needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 2, 2026

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