LocalSend is a free, #open-source app that allows you to securely share files and messages with nearby devices over your local network without needing an internet connection.

How it Works
#LocalSend uses a secure communication protocol that allows devices to communicate with each other using a REST API. All data is sent securely over HTTPS, and the TLS/SSL certificate is generated on the fly on each device, ensuring maximum security.

https://github.com/localsend/localsend

GitHub - localsend/localsend: An open source cross-platform alternative to AirDrop

An open source cross-platform alternative to AirDrop - GitHub - localsend/localsend: An open source cross-platform alternative to AirDrop

^GitHub