The Quick Apps are end to end demo applications which can be used a demos, technical reference, starting points or for community development (open source license).

The Windows Live Platform Quick Applications dev team has released four new QuickApps: We've added more applications: Retail, Contoso Riders, Team Builder and Field Manager and made lots of enhancements to the others. You can use these apps to—study, and/or modify. They take advantage of Windows Live and Microsoft tools such as Silverlight, Windows Live ID, Messenger, and more. Angus Logan has a description of the purposes of QuickApps:

1. Examples of what is possible – use them, play with them, get ideas!
2. Technical reference – if you want to use a Live Platform API, there is a good chance it will be in a Quick App, check out the code to see how it was implemented.
3. Starting point – these end-to-end applications are licensed under a fairly liberal (OSI approved) license, you can use them as starting points for your own applications.

Retail is one of the slickest user experiences we’ve created, it uses Silverlight 2 to deliver a wall of videos, check out the demo.

Video

Source:→ LiveSide