Xamarin is a Microsoft-owned, San Francisco, California-based software company. It was founded by the creators of Mono, Mono for Android, and MonoTouch, which are cross-platform implementations of the Common Language Infrastructure (CLI) and Common Language Specifications (often called Microsoft .NET).
With a C#-shared codebase, developers can use Xamarin tools to write native Android, iOS, and Windows apps. The apps have native user interfaces and share code across multiple platforms, including Windows and macOS.
A implementation of pdfjs for android wrapped into a nuget so you can just install and use it
A plugin to provide the ability to do simple text from image OCR using nothing but platform APIs
Library meant to provide C# Nugets (for Xamarin/MAUI Apps) that offer high-level abstractions over the native Nordic libs targeting Android (Java) and iOS (Objective-C / Swift)
A repository filled with resources available to you to start learning or deepen your knowledge about