C++ is used in Shiro (https://github.com/Marc3842h/shiro).

C++ is a high performance, low level programming language. Game servers need to run with fast performance to be able to reliably serve players across the globe.

The most latency sensitive parts are written in C++. Due to our interconnected services architecture, we use either Python or C++ for each service, with the performance critical parts being C++14.

All of our Javascript code is first written in CoffeeScript for ease of reading / writing. It is compiled to Javascript before being minified and served to the client.

All front-end / back-end is driven by Coffeescript. For the main ReactJS functionality JSX is embedded with coffee in .cjsx files / handled by Browserify.

We like CoffeeScript because it's more readable, we use it because we have a lot of libraries and functions already (plays nicely with Rails, too)

Used to write PHP extensions - AZTEC Decoder - License Driver scan - Axis2/C to PHP wrapper and Job-scheduler - Barbershop

Performance, zero-overhead abstractions and memory safety of the modern C++ language make this the perfect language for the project.

The main programming language of ApertusVR. C++11 & CMake provides multi-platform targeting. The architecture is modular.

All our code is CoffeeScript, blending seemlessly in our JS stack

The central business logic and ETL engine is written in Erlang.

Javascript is a hell. We use coffeescript for its readability.

Very nice programming language, used for backend integration.

foundation VM for phoenix framework

Cowboy web server serves content

Custom plugins for ejabberd