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XBackBone vs Slink: catalog facts
XBackBone	Slink
Free Free and open source; you host it yourself.	Free Free and open source under the AGPL-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	Private-by-default shares with optional password and expiry Local, SMB or S3 storage backends
Version 4 is a ground-up rewrite still under development Needs a PHP server or similar setup to host	Requires running your own server with Docker Focused on images rather than general files
Self-hosted	Self-hosted
Open source	Open source
License: Apache-2.0	License: AGPL-3.0
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 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.