Top 10 event-bus Open-Source Projects

mitt

15 10,213 4.5 TypeScript

🥊 Tiny 200 byte functional event emitter / pubsub.

Project mention: Event Bus with Vue 3 and TypeScript | dev.to | 2023-12-04

Mitt is a small (200 bytes) library that provides the same functionality. It doesn't have many updates, because it's simply perfect and there are not many things to improve there. It gets the job done. Don't be frightened, if in 2 years npm will say it's 2 years old. This library is just perfect with no bloatware. In the worst case, just copy-paste its code to your app.
plumber

19 2,039 7.7 Go

A swiss army knife CLI tool for interacting with Kafka, RabbitMQ and other messaging systems.

Project mention: plumber VS kaf - a user suggested alternative | libhunt.com/r/plumber | 2024-01-12
SurveyJS

surveyjs.io
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Open-Source JSON Form Builder to Create Dynamic Forms Right in Your App. With SurveyJS form UI libraries, you can build and style forms in a fully-integrated drag & drop form builder, render them in your JS app, and store form submission data in any backend, inc. PHP, ASP.NET Core, and Node.js.
Nakadi

0 948 8.1 Java

A distributed event bus that implements a RESTful API abstraction on top of Kafka-like queues
Low-Level-Design

1 554 1.8 Java

Low Level Designs of common data structures. These designs keep concurrency control, latency and throughput in mind. We use design patterns where applicable to make the code readable, extensible and testable. (by InterviewReady)
eventbus

0 103 2.1 C++

A simple, header only event bus library written in modern C++17. (by DeveloperPaul123)
generic-webhook-to-eventbridge

0 71 0.0 TypeScript

An AWS SAR app for sending generic webhook events to EventBridge event bus
reffects

1 30 1.9 JavaScript

Reffects is a Javascript framework for developing SPAs using an event-driven unidirectional flow architecture with a synchronous event bus with effects and coeffects.
WorkOS

workos.com
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The modern identity platform for B2B SaaS. The APIs are flexible and easy-to-use, supporting authentication, user identity, and complex enterprise features like SSO and SCIM provisioning.
backbonefx

1 15 10.0 Java

Opinionated set of tools for creating JavaFX apps

Project mention: What library/framework would you recommend for creating a GUI desktop application? | /r/java | 2023-05-30
oktopod

1 13 0.0 TypeScript

Event bus for communication between decoupled Xstate machines (services)
MBus

1 1 6.9 C#

MBus is a message bus library for Unity that can handle messages of any type with type or value based subscriptions

Project mention: new message bus package | /r/unity | 2023-05-03

Anyway, here's my take on a generic message bus: https://github.com/PMelch/MBus

NOTE: The open source projects on this list are ordered by number of github stars. The number of mentions indicates repo mentiontions in the last 12 Months or since we started tracking (Dec 2020). The latest post mention was on 2024-01-12.