LocalSend is a free and open-source app that allows users to securely share files and messages with nearby devices over a local network, without needing an internet connection. Unlike other messaging apps, LocalSend does not rely on external servers, making it a fast and reliable solution for local communication. The app uses a secure communication protocol and HTTPS encryption to ensure maximum security. Users can contribute to the app by translating it into different languages or by reporting bugs and suggesting improvements. LocalSend is available for Windows, macOS, Linux, Android, and iOS.
https://github.com/localsend/localsend