Windows Presentation Foundation (WPF) on GitHub

The visual designer provided in Visual Studio makes it easy to build WPF application, with drag-in-drop and/or direct editing of XAML markup. Instances of abusive, harassing, or otherwise unacceptable behavior may be reported by contacting a project maintainer at issues and bugs should be reported privately, via email, to the Microsoft Security Response Center (MSRC) secure@microsoft.com. NET Core (including the WPF repo) is licensed under the MIT license.

Source: github.com