Top 20 NuGet async Packages

Converts executing a command line process into an Cancellable Task
A simple but guaranteed API Call function with callbacks for ease of programming. It allows for Synchronous and A-Synchronous Calls.
Unidirectional Framework for XAML Platforms built on top of Gjallarhorn
Extensions for Starcounter aiding async programming
Disqus API for .NET updated by Arisa, Originally by Alexandr Shestakov
An easy way to cancel any type of Tasks after timeout
Roslyn based analyzer to analyze asynchronous method name and parameters.
An Async wrapper for System.Diagnostics.Process
Check https://github.com/MukeshMohanty/RxSocks for details.
Asynchronous TCP C# library for client applications.
Code.Generation.Roslyn facilitates code generation driven by fit for purpose custom attributes.
.NET Task / ValueTask helpers for compositioning frustration free.
Fast Async Log for .NET Core
Winforms long operation indicator.
Turns a Blazor Component into a Modal Dialog. Async methods allow dialogs to return values. Allows nested dialogs (i.e. a dialog can open a child dialog). Supports Blazor WebAssembly and Server. Includes Windows style Message Box for quick user feedback.
A library that provides async IO operations and transactions. Supports conversions back and forth from popular formats like Json, Bson, Xml, Csv on the fly or directly to persist.