Top 20 NuGet messaging Packages

Pub/Sub in-memory with all parts configurable
Fully asynchronous Messaging Framework used to abstract away the low-level workings of Azure ServiceBus topics.
Part of the The Realtime Framework, Realtime Cloud Messaging (aka ORTC) is a secure, fast and highly scalable cloud-hosted Pub/Sub real-time message broker for web and mobile apps. If your website or mobile app has data that needs to be updated in the user's interface as it changes (e.g. real-time s...
Jil (Json) serializer for OpenMessage
Pluggable foundation blocks for building distributed apps.
ADO.NET based queues for DotNetCqs.
ASP.NET Core (ASP.NET 5) framework support for RestBus
Provides an implementation of the messaging gateway for decoupled invocation in the Paramore.Brighter pipeline, using Kafka.
Lightweight messaging wrapper of MassTransit
A cache that supports scheduling the regeneration of cache items in the background ahead of their expiry and manages this across a farm of web/service nodes minimising duplicated cache value generation work.
Lightweight messaging wrapper of MassTransit
Lightweight messaging wrapper of MassTransit
Base KnightBus Message Interfaces
Pluggable foundation blocks for building distributed apps.
Monitoring extension for Obvs, using AppMetrics (app-metrics.io)
Twino Messaging Queue (TMQ) Protocol library and server extension for Twino Server
Extension to SlimMessageBus that delegates serialization to the respective serialization plugin based on message type.
Event communication package that allows you to send type-safe data from one class to another.
A simple, easy to use asynchronous messaging framework for .NET.
Implementation for messaging using MediatR