Warkey.NET III is an open source Warkey. It is designed to work and integrate with Windows 10 flawlessly. Of course, it's open source, no ads and user friendly.
Compiled version (Any CPU):
https://github.com/noobhacker/WarkeyNETIII/releases/download/1.1/WarkeyNETIII.exe
Older version:
Warkey.NET 3GS or Warkey.NET II for Windows 7
https://github.com/noobhacker/WarkeyNETIII/releases/tag/0.2
Special thanks to FluentWPF:
https://github.com/sourcechord/FluentWPF
Newtonsoft.Json and Costura.Fody