How do I get growl for windows to use native windows 8/10 notifications?

Here's an alternative implementation along the same vein of Jonno's one: https://github.com/BobVul/GrowlToToast/blob/master/README.md

The basic principle is the same, but this also sends the original title as sent by the Growl source, and supports a 'silent mode' that stops the Windows 10 notification sound.

Installation

See the Installation instructions in the README. This has changed across different versions.

I had put together a quick display to mimic this, literally just using the SDK and a quick hack up of the Windows 10 Notification system. Unfortunately notifications require a higher version of the .NET framework than Growl uses (Displays are build for 2.0), so it requires a helper exe which simply takes one argument, the description for the notification.

Source and EXE are available here if you wanted to use it or it can help anyone:

https://github.com/Jonno12345/GrowlForWindows10/releases

Quick video of it in action: