We value Open Source and make a point to release all our plugins on GitHub under a BSD License.
Download the .nbm plugin from GitHub releases
Inside Netbeans select Tools → Plugins → Downloaded → Add Plugins…
Select the downloaded nbm file.
Check WakaTime and click the Install button.
Follow the wizard instructions to complete the installation.
Enter your API key
, then click OK.
Use NetBeans like normal and your stats will automatically show on your WakaTime Dashboard.