github.com
FlyingCarpet is a cross-platform file transfer tool for Android, iOS, Linux, macOS, and Windows. It sends and receives files over ad hoc WiFi with one device acting as hotspot, or over a network shared by both devices. No internet or cell connection is required; two devices need WiFi or ethernet chips, and optionally Bluetooth when in close range. Version 10 adds a Shared Network mode and cannot transfer with version 9 or earlier.