Top 20 NuGet subscriber Packages

A fast and light-weight implementation of the observer pattern that supports synchronous and asynchronous invocation and/or subscribers. A potential replacement for regular .NET events.
Bupa.Api.Common.AspNetCore
Publisher-subscriber (pub/sub) pattern implementation
Task scheduling for .NET: Azure Service Bus
ASP .NET Core Extensions for DipSocket, a lightweight publisher / subscriber implementation using WebSockets.
Simple Event Bus Library for NetStandard. Based on @songdongsheng EventBus
A lightweight publisher / subscriber implementation using WebSockets.
The goal of pServiceBus(Phoenix Service Bus) is to provide an API and Service Components that would make implementing an ESB Infrastructure in your environment easy. It's developed in C#, and also have API written for Javascript, Java, and Objective-C Clients.
Intent Esb Client Library
Common Subscriber is used to subscribe to RabbitMQ exchanges.
Simple EventBus Class Library
Umbraco Forms Mailchimp Integration WorkflowType
This contains interfaces and helper classes for applying C# patterns to your own code. Commonly Used Types: - IBuilder - ISubscriber - Observable - Unsubscriber
Umbraco Forms Mailchimp Integration WorkflowType