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copyparty vs Usermode FTP Server: catalog facts
copyparty	Usermode FTP Server
Free Free and open source.	Free Free and open source under the GPL-3.0 or later.
Self-hosted	Linux
Runs from a single portable file Resumable uploads with deduplication	Runs without root privileges Simple GTK4 graphical interface
You host and secure the server yourself Many features means a lot of configuration to learn	Linux only Small single-developer project with little documentation
Self-hosted	Downloadable app
Open source	Open source
License not stated	License: GPL-3.0-or-later
No account needed	No account needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked September 24, 2026	Official website Full listing and sources Checked October 1, 2026

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