What would you accomplish in a 21-day stretch? For Miguel de Icaza of 
Novell, it was banging out an open source clone of Silverlight, 
Microsoft's rich Internet application development framework.

de Icaza is the project leader for the Mono initiative, an open source 
version of .NET and a vice president at Novell. Since Silverlight is 
based on .NET, much of the work was already done for him.

"My objective with this thing is we want Linux users to be first class 
citizens when it comes to accessing content on the Internet, whether 
it's Silverlight or Flash or JavaFX," di Icaza told internetnews.com. 
"Microsoft indicated it didn't have immediate plans to do so, so we went 
and did it ourselves."

de Icaza decided to whip up an open source version of Silverlight for 
Linux after it was announced at Microsoft's MIX 07 show. "It wasn't too 
complicated," he said. "That was what was good about Silverlight. If you 
already had the .NET framework running, it was not difficult to 
implement Silverlight."

Silverlight's Dynamic Language Runtime (DLR) provides support for 
dynamic languages like Python, Ruby and JavaScript. It runs on top of 
the Common Language Runtime (CLR), which is part of the Mono project.

The DLR is released under Microsoft's aptly-named Permissive License, 
the closest Microsoft comes to open source. Thanks to the deal between 
Novell and Microsoft struck last November, de Icaza believes that Mono 
is not in Microsoft's legal cross hairs.

"Microsoft is focused on ensuring Silverlight provides the broadest 
reach that our customers demand. At this time, we are focused on 
delivering Silverlight for Windows and Macintosh desktops, but based on 
customer feedback and demand we are open to exploring other areas," said 
a Microsoft spokesperson in an e-mailed statement.

de Icaza said that Moonlight is about "80 percent" feature complete with 
what is out there for Silverlight, which is itself incomplete. 
Silverlight 1.0 is currently in beta and Silverlight 1.1 is in alpha, so 
both products have a way to go, to say nothing of Moonlight.

While de Icaza waits for the final code, his team plans to analyze the 
code base and tune it for performance. Some areas, like the 3D 
rendering, were found to be rather inefficient, which can happen when 
you write code at top speed.

"It's like the books tell you, it's one thing to have a program, it's 
another thing to have a product," he said. "Having a final product is 
typically nine times the effort to get your product up and running. So I 
would say there is work to do to get this running in an automatic way."

Source: http://www.internetnews.com/dev-news/article.php/3685706

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