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LocalSend vs LocalSend Kotlin: catalog facts
LocalSend	LocalSend Kotlin
Free Free and open source under the Apache 2.0 licence, with no advertising or trackers.	Free Free and open source under the Apache-2.0 licence.
Windows, macOS, Linux, Android, iOS	Android
Works completely offline: files never leave your local network No account, no login and no server to configure	Works with official LocalSend clients Lightweight native app suited to older Android devices
Both devices must be on the same network, and some guest or corporate networks block device discovery It sends files, it does not keep folders in sync	Unofficial and not endorsed by the LocalSend project Android only
Downloadable app	Downloadable app
Open source	Open source
License: Apache-2.0	License: Apache-2.0
No account needed	No account needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked September 20, 2026	Official website Full listing and sources Checked October 2, 2026

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