Microsoft Popfly (internally codenamed Springfield) was a Web site that allowed users to create web pages, program snippets, and mashups using the Microsoft Silverlight rich internet applications runtime and the set of online tools provided. It was discontinued on August 24, 2009.

The Popfly included four tools based on Silverlight technology, which are described as follows.

The Game Creator was a tool that allowed you to create your own game or extend a game already built. It could be exported to Facebook, or be used as a Windows Live Gadget.

The Mashup Creator was a tool that let users fit together to pre-built blocks in order to mash together different web services and visualization tools. For example, a user could join together photo and map blocks in order to get a geotagged map of pictures on a topic of their choice. An advanced view for blocks allowed users to modify the code of the block in JavaScript, as well as giving users flexibility in designing the programs. Additional HTML code could also be added to the mashups. A feature similar to IntelliSense, with autocompletion of HTML code, was available as well.

Coordinates: 47°38′22.55″N 122°7′42.42″W / 47.6395972°N 122.12845°W / 47.6395972; -122.12845

Microsoft Corporation (NASDAQ: MSFT) is an American multinational corporation headquartered in Redmond, Washington, United States that develops, manufactures, licenses, and supports a wide range of products and services predominantly related to computing through its various product divisions. Established on April 4, 1975 to develop and sell BASIC interpreters for the Altair 8800, Microsoft rose to dominate the home computer operating system market with MS-DOS in the mid-1980s, followed by the Microsoft Windows line of operating systems. Microsoft is one of the largest software corporations in the world.

Microsoft would also come to dominate the office suite market with Microsoft Office. The company has diversified into the video game industry with the Xbox and Xbox 360 consoles and the consumer electronics and digital services market MSN, the Zune and the Windows Phone OS. The ensuing rise of stock in the company's 1986 initial public offering (IPO) made an estimated three billionaires and 12,000 millionaires from Microsoft employees (Forbes 400 list revealed that in March 2011 both Jon Shipley and Nathan Myhrvold lost their billionaire status). In May 2011, Microsoft Corporation acquired Skype Communications for $8.5 billion.

Dan Fernandez is the Lead Product Manager for Visual Studio Express at Microsoft corporation. He has worked for Microsoft since 2001 most recently he was the C# Product Manager. Dan is a frequent speaker at events like Developer Days, TechEd, and Visual Studio Connections. His contributions include the Visual Studio Express products and creating the Coding4Fun Web site, a site dedicated to computer hobbyists including April Fool's Day pranks. Dan is one of the people that created SubservientProgrammer, an open source Office Space-like play on Burger King's Subservient Chicken.