Top 8 C++ Pubsub Projects

µWebSockets

41 16,699 8.6 C++

Simple, secure & standards compliant web server for the most demanding of applications

Project mention: I'm open-sourcing my game engine | news.ycombinator.com | 2023-12-19

They use (uWebSockets)[https://github.com/uNetworking/uWebSockets], which was written in C++, but has an interface to use in NodeJS. It's been really performant for me in my simple tests compared to other popular websocket libs that slow down fairly quickly.
ZeroMQ

18 9,256 7.6 C++

ZeroMQ core engine in C++, implements ZMTP/3.1

Project mention: Lightweight and fast AMQP (0-9-1) server | news.ycombinator.com | 2024-04-07

Slightly OT:
Are ZeroMQ and NanoMQ still widely used (and recommended)?
https://github.com/zeromq/libzmq
https://github.com/nanomq/nanomq
WorkOS

workos.com
sponsored

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.
uWebSockets.js

32 7,240 8.2 C++

μWebSockets for Node.js back-ends :metal:

Project mention: Building Real-Time Next.js Apps with WebSockets and Soketi | dev.to | 2023-12-10

If you have never heard of Soketi, to give you a brief overview, it is a WebSocket server that was built on top of uWebSockets.js and has great compatibility with Pusher Protocol.
iceoryx

10 1,480 9.8 C++

Eclipse iceoryx™ - true zero-copy inter-process-communication

Project mention: Show HN: Comprehensive inter-process communication (IPC) toolkit in modern C++ | news.ycombinator.com | 2024-04-13

Also, when you want to perform some access control with access rights, you have to face sid— and ace-strings - oh they are fun. And, of course, there are all the nasty details; for instance, Windows defines macros that lead to compilation failures since they collide with internal naming. Take a look at this here, maybe it makes your efforts less painless: https://github.com/eclipse-iceoryx/iceoryx/blob/master/iceor...
You could reuse the iceoryx platform layer that enables iceoryx to run on every platform from qnx, linux, freertos, mac, windows. Maybe it can help you as well: https://github.com/eclipse-iceoryx/iceoryx/blob/master/doc/w...
sobjectizer

13 456 9.1 C++

An implementation of Actor, Publish-Subscribe, and CSP models in one rather small C++ framework. With performance, quality, and stability proved by years in the production.

Project mention: SObjectizer Tales - 27. Design ideas | dev.to | 2024-04-11

An additional rationale for structuring cooperations in hierarchies is to facilitate the sharing and propagation of dispatchers. A recent update of SObjectizer includes new functionalities that allow access to both agent and cooperation dispatchers. This enhancement was prompted by feedback provided by a user and myself.
areg-sdk

21 238 8.8 C++

AREG is an asynchronous Object RPC framework to simplify multitasking programming by blurring borders between processes and treating remote objects as if they coexist in the same thread.

Project mention: Essentials of Object Oriented and Functional Programming: A Guide to Modular Code | dev.to | 2023-07-27

FP Libraries: gRPC, ZeroMQ, and AREG are examples of libraries with a special focus on providing possibilities for Interprocess Communication. Developed using C++, they facilitate communication through predefined APIs, emphasizing functional programming concepts.
ros_gz

1 183 7.2 C++

Integration between ROS (1 and 2) and Gazebo simulation
InfluxDB

www.influxdata.com
sponsored

Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
mros2

1 153 6.8 C++

agent-less and lightweight communication library compatible with rclcpp for embedded devices

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 2024-04-13.