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