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Microsoft Silverlight is a cross-browser, cross-platform plug-in for delivering the next generation of .NET based media experiences and rich interactive applications for the Web. Silverlight offers a flexible programming model that supports AJAX, VB, C#, Python, and Ruby, and integrates with existing Web applications. Silverlight supports fast, cost-effective delivery of high-quality video to all major browsers running on the OS X or Windows.

What's New

Version 5.1.40728.0:
  • Fixes an issue in the Silverlight 64-bit runtime that causes some applications to crash on Internet Explorer 11.
  • Updates the Macintosh installer to successfully install on OS X systems that have Gatekeeper security enabled.


  • OS X 10.5.7 or later
  • Firefox 12 or later, Safari 4 or later

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3 91


Current Version (5.x)


Downloads 831,384
Version Downloads 48,546
Type Internet / Plugins
License Free
Date 14 Aug 2015
Platform OS X / Intel 32
Price Free
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