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AlterSend vs iyox Wormhole: catalog facts
AlterSend	iyox Wormhole
Free The client is open source under Apache-2.0; no paid tier is mentioned on the homepage.	Free Free and open source under the GPL-3.0 licence.
Windows, macOS, Linux, Android, iOS, Web	Android
Files go device to device with no copy left on a server Recipients can download from a browser link without installing anything	End-to-end encrypted transfers Short passcode or QR code pairing
Both devices must be online at the same time for a direct transfer Transfer speed depends on the sender's own connection	Relies on Magic Wormhole relay servers to connect No GitHub releases
Downloadable app, Web application	Downloadable app
Open source	Open source
License: Apache-2.0	License: GPL-3.0
No account needed	No account needed
Not stated if it works offline	Needs internet
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.