Ruby is the interpreted scripting language for quick and easy object-oriented programming. It has many features to process text files and to do system management tasks (as in perl). It is simple, straight-forward, and extensible.

The Fast Library for Integer Number Theory is a C library which supports polynomial arithmetic over the integers, fast integer arithmetic and factoring (including a highly optimized quadratic sieve).

Wayfire is a 3D Wayland compositor, inspired by Compiz and based on wlroots. It aims to create a customizable, extendable and lightweight environment without sacrificing its appearance.

This is the GNU D compiler, which compiles D on platforms supported by gcc. It uses the gcc backend to generate optimised code.

ftxui is a modern C++ TUI library for building interfaces in a functional style.

This is a Cython interface to the C++ library primecount.