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