FPS Controls give you the ability to customize WPF applications.
Binarymission Technologies Ltd
It is a comprehensive Tab control for the WPF and Silverlight .NET applications.
The whole package is free and comes with source code.
Drive Software Company
Clock Tray Skins is the advanced replacement for standard Windows tray clock.
VLC skin editor - design skins for vlc media player.
DotNetBar for WPF is a component to create professional sleek WPF applications.
FPS Wizard for WPF facilitates the development of WPF wizards.
Stimulsoft Reports.Wpf is a reporting tool that is developed for WPF.
WPF Chromium Control is able to render and interact with webpages within WPF.
The WPF Toolkit is a collection of WPF features and components.
WPF Inspector is a utility that attaches to a running WPF application.
Spire.XLS for WPF is a professional WPF Excel component.
Xceed Software Inc.
Xceed Extended WPF Toolkit Plus provides over 60 essential WPF controls.
This utility makes Windows Media Player skins from WinAMP skins.
Allows you to take Winamp skins and translate them into Enhancer skins.