C++ Commercial Projects

µWebSockets

6 16,672 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.
uWebSockets.js

7 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.
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.

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 2023-12-19.