Top 20 NuGet async Packages

Provides a single-threaded synchronization context, which makes it easy to reason about asynchronous code in environments that don't usually provide a synchronization context (for example, console applications).
Utilities to simplify automated tests that involve asynchronous operations
Async repository extenssions for LiteFx.
Implementation of Detector use case, if only one of the events is relevant.
Inspired by languages like Concurrent ML and Cilk, Hopac is a library for F# with the aim of making it easier to write efficient parallel, asynchronous, concurrent and reactive programs. Hopac is licensed under a MIT-style license. See project website for further information.
High performance Redis client, incorporating both synchronous and asynchronous usage.
[.NET 4.6.1+] - DisposableObservable: a class for creating Observable sequences with TPL easily as Observable.Create - [IObservable].Serialize: wrap all subscriptions into a single ISubject against the sourcing observable - [IObservable].AsAsync: execute all functions on TPL - [IObservable].Fork: a...
A collection of utilities that encapsulate common concurrency patterns and constructs for use with the Hopac concurrency library.
Async module for Log4Net. Fundamental if you want to have logs with WebAPI. Send your comment, idea or bug on http://forum.puresourcecode.com
A tiny (ligthweight) tcp server providing tcp infrastructure and hooks (on client data exchange) for application with possibility to specify behaviour dynamically via C# script.
A helper library for async/await with TPL Dataflow.
Add extension method for ExceptionManager to support exception handling in async actions and functions. public static async Task<TResult>ProcessAsync<TResult>(this ExceptionManager exceptionManager, string policyName, Func<Task<TResult>> action, TResult defaultValue) public static async Task Proces...
Utilities for working with async enumerables.
Common functionality for Fabricators Guild solutions (will be moved to separate repo soon)
Azure Queue Storage support for SQL Server job storage implementation
Async Polling (async-polling) binding library for Bridge.NET projects.
Async Lock (async-lock) binding library for Bridge.NET projects.