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ShareDrop vs AlterSend: catalog facts
ShareDrop	AlterSend
Free Free and open source.	Free The client is open source under Apache-2.0; no paid tier is mentioned on the homepage.
Web	Windows, macOS, Linux, Android, iOS, Web
Files go directly between devices, not through a server Nothing to install; works in the browser	Files go device to device with no copy left on a server Recipients can download from a browser link without installing anything
Does not work with VPNs Both devices must have the page open during the transfer	Both devices must be online at the same time for a direct transfer Transfer speed depends on the sender's own connection
Web application	Downloadable app, Web application
Open source	Open source
License not stated	License: Apache-2.0
No 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.