andrewbares 

A library for generating and parsing query strings using C#. Url encoding/decoding is automatically handled. Supports multiple values per name.

The official NotificationsExtensions library from Microsoft. Supports C# and C++ UWP project types (see NotificationsExtensions.Win10.JavaScript for the JS version). Also works with C# portable class libraries and non-UWP C# projects like server projects. Generate tile, toast, and badge... More information

The official NotificationsVisualizerLibrary library from Microsoft. This is for Windows 10 UWP apps using the 10240 SDK or newer. Have you ever wanted to display a preview of your live tile in your app's settings page, so the user can instantly see how your various settings will affect their live... More information

The official NotificationsExtensions library from Microsoft. Supports JavaScript UWP projects (see NotificationsExtensions.Win10 for the C#/C++ version). Generate tile, toast, and badge notifications for Windows 10 via code, with the help of IntelliSense, instead of directly using XML.... More information

Fixed package that works on iOS. StorageEverywhere provides a consistent, portable set of local file IO APIs for .NET 45, UWP, Xamarin.iOS, Xamarin.Android. This makes it easier to create cross-platform .NET libraries and apps. 2.0.0 is updated to work with iOS .NET 7.

Supports pre-compiling XLIFF translation files into RESX files automatically before main build step, serving as a replacement for broken Multilingual App Toolkit for my app.

The NotificationsVisualizerLibrary library from a program manager that works on the notifications team at Microsoft. This is for WinUI 3 apps. Have you ever wanted to display a preview of your live tile in your app's settings page, so the user can instantly see how your various settings will affect... More information

Common Android Xamarin interfaces used in my apps

Use WPF UI controls in a declarative manner, including third-party controls!