Where to find Windows Modern UI apps' source code?

You can find the source code for some of the apps in: (There's probably another folder since this isn't all the apps I have)

C:\Program Files\WindowsApps

For those of you who do not have permissions to access the folder follow these instructions:

1. Type in “C:\Program Files\Applications” in the Windows Explorer address bar and hit enter.
2. Observe in shock and dismay the system dialogue saying you don’t own a folder on your own machine. Hit “Continue”.
3. After hitting “Continue”, you’ll be confronted by the following dialogue: Do not hit “close”, instead click the “security tab” link.
4. In the following system dialogue click “advanced”.
5. Click the “change” link in the owner security field.
6. Add in your live ID or windows 8 user name to the “select user or group” system dialogue.
7. Click “OK”, Click “OK”, Click “Ok”.

Credits: Justin Angel

There is a free e-book from Microsoft press for programming windows 8 apps using HTML 5, CSS and JavaScript. It includes a download for source code.

http://blogs.msdn.com/b/microsoft_press/archive/2012/08/20/free-ebook-programming-windows-8-apps-with-html-css-and-javascript-second-preview.aspx

You can get examples of metro/modernui/window store app code here from MS's code snippet site - there's more specific samples here. And of course, how to do hello world here. They seem to cover a good range of things and unless you specifically want to have a modified version of say, the mail app, are probably easier to make use of

Why get the apple from the barrel, when you can get it from the tree?