NFC21 Tools allows you to write NFC tags conveniently on your Windows PC. The software is available from Windows 7 on and requires a corresponding NFC reader/writer, which is available in our shop: NFC-Reader. .Information. NFC Tools GUI is a cross Platform software : it works on Mac, Windows and Linux. You can read and write your NFC chips with a simple and lightweight user interface. Connect your NFC reader to your computer like the very popular ACR122U to start playing with your NFC .