A free app for Android, by NXP Semiconductors.

NFC tags can be created and managed using NFC TagWriter by NXP. With the help of this application, you can store information on any NFC-enabled tags, such as contact details, bookmarks, location data, Bluetooth handover, Text messages, mail, and more. After that, you can read and view the programmed data, along with options to launch applications depending on the contained data.

To use the NFC TagWriter, you need to install the application on your device. You will then be able to use it to create NFC tags.