If you have created a website using ASP.NET Web Pages, you can access the Administration Panel by  clicking on “Site” and then on “ASP.NET Pages Administration”.

You will be required to create a password, that will then be saved encrypted in the file /App_Data/Admin/_Password.config. To access the “ASP.NET Web Pages Administration”
you will need to rename the file, by removing the underscore “_” and enter the password you just created.

You can develop the website using various extensions which can be downloaded directly in WebMatrix.

It’s also possible to configure other Package sources, by clicking on: “Manage Package Sources”.