If you're not familiar with the Windows App Studio, it's a way for people to create Windows apps without writing a single line of code. Developers can plug in RSS feeds, along with other data sources from Facebook, Twitter, Groove Music, and much more.
Today, Microsoft outlined some details involving the open source libraries that the service uses, along with the Windows App Studio UWP Samples app.
You can grab the Windows App Studio UWP Samples app from the Store right now. It's designed to show samples of all of the different data sources that are available through the service.
Attributes of the controls can be adjusted as well, changing the way that they're displayed. If that's not enough, users always have the option of downloading the source code and editing it in Visual Studio.
Microsoft wants to focus on the standardization of controls. This includes two main libraries:
The Windows App Studio UWP Controls library provides user interface controls, such as Pivorama and Carousel. Windows App Studio Data Sources is for portions of the app communicating with whatever it needs to pull information from.
Most importantly, Microsoft wants you to use these libraries and even contribute to them. You don't need to be creating an App Studio app to do it. Any app can implement them as NuGet packages, and it's even emphasized that no attribution is necessary.
Since they’re open source, you are enthusiastically invited to contribute new controls, data sources, and whatever else you think is great.
Open source creates a benefit for both the user and the provider. Users can comb through the code and do what they wish with it, while the provider of the code can accept contributions from the public, with the end result being a better product.
Source: Windows Blog