I know that there is already a editor named NBTExplorer, but I'm a linux user and i can't get the Mono Runtime with NBTExplorer to work. So I decided to develop a NBTEditor based on the Qt Framework.
Currently the editor can read:
Source Code: https://github.com/Howaner/NBTEditor
Windows shows a "unsecure" warning on programs that are not signed with a code signing certificate.
I hope you can understand that I don't want to buy a code signing certificate to develop free software.