# Source: https://raw.githubusercontent.com/unoplatform/uno/refs/heads/master/doc/articles/features/using-winrt.md

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# Non-UI Cross-Platform API - Using Uno.WinRT

Uno.WinRT is the non-UI layer of Uno Platform.

It is composed of APIs that have been present since the beginning of Uno Platform to provide cross-platform access to non-UI features such as generic filesystem, sensors, file/image/video picking, networking, and devices like MIDI, flashlight, geolocation, Game Pads, and dozens more.

These APIs can be used in a NuGet package directly, without depending on UI features.

For a list of available APIs, browse the tree on the side of this document.