Xceed.Wpf.Toolkit (nuget): Extended WPF Toolkit Plus is the commercial edition of the popular Toolkit plus for WPF project, the number one collection of WPF controls for creating next-gen Windows apps.  You can try this package for free for 45 days, after which you will need to purchase a license key to continue using it.
Keywords: Xceed|Toolkit|Plus|for|WPF