Bluetooth LE Explorer allows users to find and interrogate nearby Bluetooth LE devices, read their service and characteristics and write to them. It can also be used in server mode to advertise as a battery server or a Microsoft test service server.
This app is meant to show how the bluetooth APIs can be used in a UWP app. For this purpose we have open-sourced it. The code can be found on GitHub: https://github.com/Microsoft/BluetoothLEExplorer . Contributions are welcome!