Microsoft Corp. is set to offer software for delivering rich media applications within multiple Web browsers.

Forest Key, a product management director in Microsoft's server and tools division, said the Silverlight technology is a browser plug-in that companies can use to offer video, audio and other types of interactive media on their Web sites. He added that Silverlight - which had been code-named Windows Presentation Foundation Everywhere, or WPF/E - is compatible with a range of browsers, including Internet Explorer, Firefox and Safari.