Microsoft Doing Mashup Tools
Microsoft has announced Popfly, a simple way for developers and users to create mashups, gadgets, web pages and other things. Popfly enables taking sources like photos from Windows Live Spaces and Flickr and design nice Silverlight widgets displaying them, complete with tutorials, full HTML code access and editing, a web page creator, and a community for sharing ideas and code, and finding, rating and sharing the best stuff.
Popfly supports JavaScript, AJAX libraries, HTML, XHTML, CSS, WMV, WMA, MP3, Visual Studio Express projects, JPG, PNG, GIF, and EXE on both Internet Explorer and Firefox. More coverage and screenshots at TechCrunch, Mary Jo Foley and the new Popfly blog.