raylib is described as 'game development library highly inspired by Borland BGI graphics lib and by XNA framework. Made as a simple and easy-to-use library to enjoy game programming' and is an app in the Development category. There are more than 25 alternatives to raylib for a variety of platforms, including Mac, Windows, Linux, iPhone and iPad. The best alternative is LÖVE, which is both free and Open Source. Other great apps like raylib are Ren'Py (Free, Open Source), SDL (Free, Open Source), Phaser (Free, Open Source) and MonoGame (Free, Open Source).
One framework for creating powerful cross-platform games. The spiritual successor to XNA with 1000's of titles shipped across desktop, mobile, and console platforms. MonoGame is a fully managed .NET open source game framework without any black boxes.
FreeBASIC is a completely free, open-source, 32-bit BASIC compiler, with syntax similar to MS-QuickBASIC, that adds new features such as pointers, unsigned data types, inline assembly, object orientation, and many others.