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Rclone UI vs crabdrop: catalog facts
Rclone UI	crabdrop
Free Free and open source.	Free Free and open source under the MIT license.
Windows, macOS, Linux	Windows, macOS, Linux
Graphical front end for rclone's cloud storage support Works with S3 storage	Works with AWS S3, Cloudflare R2, and MinIO Supports folder and drag-and-drop uploads
Depends on rclone for the actual transfers Documentation lives mainly in the repository README	Requires access to an S3-compatible storage service
Downloadable app	Downloadable app
Open source	Open source
License not stated	License: MIT
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 September 24, 2026	Official website Full listing and sources Checked October 8, 2026

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