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Inkcast vs Send to Kindle: catalog facts
Inkcast	Send to Kindle
Free Free and open source under the Apache-2.0 licence.	Free Free download from Amazon.
Android	macOS
Converts web articles to EPUB for reading later Automatic discovery of e-readers on the local network	Sends personal documents straight to a Kindle library Official Amazon tool
Built for CrossPoint Reader devices Young project	Requires an Amazon account Only works with Kindle devices and apps
Downloadable app	Downloadable app
Open source	Closed source
License: Apache-2.0	License not stated
Not stated if an account is needed	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 1, 2026

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