Microsoft Silverlight is a free web-browser plug-in that enables interactive media experiences, rich business applications and immersive mobile apps.
Windows? Check. Mac? Check. Linux? Check. Silverlight works on all major OS's plus all major browsers, including Firefox, Google Chrome, Safari, and yes, Internet Explorer.
Microsoft Silverlight is a powerful tool for creating and delivering rich Internet applications and media experiences on the Web. Silverlight 5 builds on the foundation of Silverlight 4 for building business applications and premium media experiences. Silverlight 5 introduces more than 40 new features, including dramatic video quality and performance improvements as well as features that improve developer productivity.
http://go.microsoft.com/fwlink?linkid=229308
Yes, Microsoft has made the Silverlight browser plug-in freely available for all supported platforms and browsers.
Verify your installation by visiting the Silverlight installation page.
The Silverlight installer and tools for Designers and Developers can be found on the Resources page. The Silverlight community site is also a great resource for developers to find additional resources and get started.
See http://support.microsoft.com/gp/lifean45
For Silverlight-related forums, blogs, and community resources visit the Silverlight Support and Community page
See http://www.microsoft.com/getsilverlight for installation instructions and system requirements.
Microsoft designed Silverlight with the ability to deliver high-fidelity experiences on the broadest set of system configurations. Some features, such as HD video, may benefit from the power contained in newer personal computers.
As you review Microsoft Silverlight, please feel free to consult any of the many additional resources provided. More information can be found at the following locations: