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Uguu vs XBackBone: catalog facts
Uguu	XBackBone
Free Free and open source under the GPL-3.0 licence.	Free Free and open source; you host it yourself.
Web, Self-hosted	Web, Self-hosted
Uploads without registration API with several response formats, works with ShareX	One-click uploader configs for ShareX and other capture tools Local, S3, FTP and SFTP storage backends
Basic feature set with no user accounts or folders Needs a PHP web server to self-host	Version 4 is a ground-up rewrite still under development Needs a PHP server or similar setup to host
Web application, Self-hosted	Self-hosted
Open source	Open source
License: GPL-3.0	License: Apache-2.0
No account needed	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.