Microsoft's new "Project Siena" released today is a Windows 8.1 app that lets you easily create your own Windows app.
The idea is to give anyone, even if you don't have programming skills, a quick tool for building Windows 8-style apps.
In line with Microsoft's mobile push, Project Siena also uses touch so you can create apps from a tablet, rather than using the desktop point and click equivalents.
When you create a Windows 8.1 app you can immediately publish and share it with others as an installer package. Project Siena launches in beta preview today for Windows 8.1 and Windows RT 8.1 users.