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ProFTPD vs CompleteFTP: catalog facts
ProFTPD	CompleteFTP
Free Free and open source.	Paid Paid licences with published pricing and a free trial.
Linux, Self-hosted	Windows, Self-hosted
Modular design lets you add only the features you need Supports FTP, FTPS and SFTP	SFTP, FTPS, HTTPS and SCP in one server Automation and integration features for scheduled workflows
Built from source and configured by hand, which takes server experience Server only, with no graphical management interface	Windows only Paid licence required after the trial
Downloadable app, Self-hosted	Downloadable app, Self-hosted
Open source	Closed source
License: GPL-2.0	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 October 1, 2026	Official website Full listing and sources Checked October 1, 2026

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