Contains some simple and commonly used WPF controls

SwarmUI (formerly StableSwarmUI), A Modular Stable Diffusion Web-User-Interface, with an emphasis on making powertools easily accessible, high performance, and extensibility.

Awesome dialogs for Windows Desktop applications built with Microsoft .NET (WPF)

XamlFlair is an animation library for UWP, WPF, and Uno, built to facilitate Xaml animations using only attached properties.