出處：
http://www.cnblogs.com/petermsdn/archive/2008/12/23/1360695.html
http://www.kmnet.net/Doc/10/1124/
以下為各第三方控件網址：
telerik
RadControls for Silverlight includes 24 UI controls that can be used in pure Silverlight applications or as parts of existing ASP.NET applications. Sharing the same codebase with our WPF components, the Silverlight controls offer a clean and intuitive API, complete Blend support and powerful theming capabilities that will radically improve your RIA development.
devexpress
As the release of Silverlight draws near, DevExpress has invested the engineering resources needed to deliver a feature-rich grid control for Silverlight. Not just a "preview" of what is possible with Silverlight, the AgDataGrid Suite was developed to fully exploit the power and flexibility of the platform and will ship with the following features......
componentone
It’s here; the most complete suite of Silverlight controls on the market – with over 30 Silverlight controls! We didn’t stop there. ComponentOne Studio® for Silverlight controls are easy to style, packed with built-in features, and are compatible across multiple browsers. The future of Web development tools is yours. Illuminate your RIAs today with rich design, interactivity, and enhanced performance.
infragistics
Infragistics Silverlight Data Visualization controls feature the new Map, Timeline and Zoombar in addition to Charting with more than 28 chart types, and powerful Gauges. Includes SharePoint® Web Parts, providing developers with the tools to design data visualization and dashboard-driven applications today.
intersoftpt
WebAqua.NET™ 2.0 brings the future Web UI and UX concept build upon Microsoft Silverlight 2.0. It is designed with two key objectives - bringing aqua-fresh and crystal clear experience to your professional Web application.
netikatech
A brief tour of GOA Toolkit Controls for Silverlight. Browse Commands, Container and Navigators samples in this demo.
visifire
Visifire is a set of open source data visualization components - powered by Microsoft® Silverlight™ & WPF. Visifire is a multi-targeting control which can be used in both WPF & Silverlight applications. Using the same API, charts in both Silverlight & WPF environments can be created within minutes. Visifire can also be embedded in any webpage as a standalone Silverlight App. Visifire is independent of server side technology. It can be used with ASP, ASP.Net, PHP, JSP, ColdFusion, Ruby on Rails or just simple HTML. Don't take our word for it! Visit Visifire Gallery or design your own chart using Chart Designer.
xceedsoft
Quickly and easily add upload capabilities to any Silverlight 2 application.
ilog
divelements
SandDock is our award-winning window management software that enables dockable windows and advanced window management functionality in applications that use it. We have ported this technology to the Silverlight platform to bring web developers flexible window management features for their online applications. The product is designed to offer the power of the Visual Studio windowing system - though that doesn't mean your application will look like Visual Studio.
Kit 3D
Kit3D is a 3D graphics engine written for Microsoft Silverlight. Kit3D was initally released in a JavaScript format to run with Silverlight 1.0, now there is a new release which is written for the upcoming Silverlight 2 release. The new version of the engine is written in C# and the classes now model the WPF3D types which are found in the System.Windows.Media.Media3D namespace. Applications written using Kit3D will look nearly identical to code written to produce WPF3D content. NOTE: Use this library at your own risk, it does not come with any level of support.
Tweener(Of T)
agTweener
agTweener provides a toolkit for Silverlight designers and developers to achieve animation and transition effects similar to toolkits currently available for Flash/Flex developers by defining transition effects in .NET code and applying these effects to any FrameworkElement.
silverlightcontrib
I'm happy to announce the Alpha 2 release of Silverlight Contrib! If you have been following the project on CodePlex, you know that a lot has changed in the past few weeks. The team has grown to 6 members and we have added quite a few new features (including Silverlight 2 RTW Compatibility). Additionally, we have created a web site (SilverlightContrib.org) which contains live demonstrations of many features in Silverlight Contrib as well as an RSS feed for keeping up with announcements.
Silverlight Toolkit
The Silverlight Toolkit is a collection of Silverlight controls, components and utilities made available outside the normal Silverlight release cycle. It adds new functionality quickly for designers and developers, and provides the community an efficient way to help shape product development by contributing ideas and bug reports. This first release includes full source code, unit tests, samples and documentation for 12 new controls covering charting, styling, layout, and user input.
Your Flash and Silverlight Repository
1、网址：http://www.preiskombirechner.ch/Preis_Kombi_Rechner.ebs?ActiveID=1191
2、网址：http://www.bestfreecharts.com/
二、第三方控件：
1、RadControls Silverlight
网址：http://demos.telerik.com/silverlight/default.aspx#Home
三、开源控件：
1、翻书效果 ：
网址：http://wpfbookcontrol.codeplex.com/
2、SilverLight TreeView:
网址：http://silverlighttreeview.codeplex.com/
3、Silverlight Ribbon
网址：http://silverlightribbon.codeplex.com/
4、Silverlight Audio Player
网址：http://slaudioplayer.codeplex.com/
5、Silverlight photo album
网址：http://photoalbum.codeplex.com/
6、 Silverligth Behaviors Toolkit
网址：http://sltoolkit.codeplex.com/
7、Priyakant's Silverlight Slide Show
网址：http://prisilverlightss.codeplex.com/
8、silverlight JacAD
功能描述：jacAD是一个使用silverlight 2 开发的广告轮播系统. 目前支持视频和图片的播放
9、Silverlight ToolKit（太经典了，特别推荐一下）
网址：http://silverlight.codeplex.com/
10、Silverlight File Upload
网址：http://silverlightfileupld.codeplex.com/
11、Silverlight Video player
网址：http://sl2videoplayer.codeplex.com/
12、Silverlight Contrib
网址：http://silverlightcontrib.codeplex.com/
13、Silverlight Muti File Upload
网址：http://slfileupload.codeplex.com/
14、Silverlight Gantt Chart
网址：http://silverlightgantt.codeplex.com/
15、Silverlight Validator & Input Toolkit
网址：http://silverlightvalidator.codeplex.com/
16、Blacklight
网址：http://blacklight.codeplex.com/
17、Silverlight PropertyGrid
网址：http://slpropertygrid.codeplex.com/
18、DeepZoomContainer, improved MultiScaleImage in Silverlight
网址：http://deepzoomcontainer.codeplex.com/
19、Word 2007 XAML Generator
网址：http://word2007toxaml.codeplex.com/