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InfluxDB
Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
This is EXACTLY what React Native produces on Windows. It drives UWP XAML (it even uses WinUI 2: https://microsoft.github.io/react-native-windows/docs/customizing-sdk-versions), and you can directly declare UWP XAML controls in your JS code instead of using the cross-platform control abstractions by using https://github.com/microsoft/react-native-xaml. I'm not sure how more UWP you want.
NOTE:
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Hence, a higher number means a more popular project.