Marc3842h uses C++
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.
OnlineCity uses C++
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.
Oomba uses CoffeeScript
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.
opening.io uses CoffeeScript
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.
jflynn33 uses CoffeeScript
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)
POROWNEO.PL uses C++
Used to write PHP extensions - AZTEC Decoder - License Driver scan - Axis2/C to PHP wrapper and Job-scheduler - Barbershop
LucaFulchir uses C++
Performance, zero-overhead abstractions and memory safety of the modern C++ language make this the perfect language for the project.
ApertusVR uses C++
The main programming language of ApertusVR. C++11 & CMake provides multi-platform targeting. The architecture is modular.