raylib is an open-source, Zlib-licensed C programming library for building videogames and graphical applications, aimed at programmers who would rather write code directly than work inside a visual game engine editor.

What it is

raylib is a simple and easy-to-use library to enjoy videogames programming, written in plain C (C99) with PascalCase and camelCase naming. It takes heavy inspiration from the Borland BGI graphics library and from the XNA framework, and it is described as especially well suited to prototyping, tooling, graphical applications, embedded systems and education. It lives in the C and game-development ecosystem, with supported platforms covering Windows, Linux, macOS, Raspberry Pi, Android and HTML5, and with topics that reach further into ESP32, RISC-V, embedded systems, IoT and WebAssembly. The repository carries 34,783 stars, 3,299 forks and 16 open issues, and it is a standalone library rather than a framework with an editor attached.

The concrete problem raylib solves is dependency weight and editor overhead. Where a typical game project must gather a windowing layer, a graphics abstraction, font and texture loaders and additional support code, raylib bundles everything it needs inside its own source tree, so no external dependencies are required. It also rejects the interface layer of mainstream engines: the project note states plainly that there is no fancy interface, no visual helpers and no debug button, just coding in the most pure spartan-programmers way.

Key capabilities

• No external dependencies: all required libraries are included in raylib under src/external.
• Multiple platforms supported: Windows, Linux, MacOS, RPI, Android, HTML5 and more.
• Hardware accelerated with OpenGL 1.1, 2.1, 3.3, 4.3, ES 2.0 and ES 3.0.
• rlgl, a unique OpenGL abstraction layer usable as a standalone module.
• rlsw, a software renderer backend that requires no OpenGL at all.
• Font formats TTF, OTF, FNT, BDF and sprite fonts, plus texture formats including compressed DXT, ETC and ASTC.
• Full 3D support covering 3D shapes, models, billboards and heightmaps, a flexible materials system with classic maps and PBR maps, and animated 3D models with skeletal bone animation in IQM, M3D and glTF, alongside shader support including model shaders.

Who uses it and how

• Educators and students, since education is named as a primary fit and the code examples are published openly at the project's examples page.
• Prototypers and tooling developers who need graphical output quickly without assembling a dependency stack by hand.
• Embedded and IoT developers, reflected in topics such as esp32, raspberry-pi, riscv, embedded and iot, where the software renderer avoids a hard OpenGL requirement.
• Web targets, through the HTML5 platform and the WebAssembly build workflow tracked in continuous integration.
• Programmers who explicitly want no visual helpers, the audience the README addresses as adventurers.

Getting started

raylib is distributed as source with its dependencies bundled in src/external, and the repository maintains CMake build workflows for Windows, Linux, macOS and WebAssembly alongside workflows that build the shipped examples. A packaging status badge tracks distribution-package availability through Repology, and the runnable example programs are collected at the project homepage, http://www.raylib.com.

How it compares

No comparable project and no list of paid products is named anywhere in the facts supplied, so raylib stands alone in this registry rather than being positioned against a named alternative. The only contrast the record supports is internal: unlike engines that ship an editor, raylib ships only a library and expects the programmer to supply everything above it.

When to use it — and when not to

Because raylib is a library and not a service, there is no database, storage layer or mail server to operate; what a user must maintain instead is a build toolchain and a per-platform compile for each target they ship to. Teams that depend on a visual scene editor, asset pipelines with a user interface, or a debug button should not choose raylib, since the project deliberately omits all of those. The documentation supplied here is also thin in places: the features list in the README excerpt is truncated mid-sentence at the shader entry, and the record cites no release history or versioning detail, so anyone evaluating it should read the full README and the code examples before committing.

#include "raylib.h"

int main(void)
{
    InitWindow(800, 450, "raylib example - basic window");

    while (!WindowShouldClose())
    {
        BeginDrawing();
            ClearBackground(RAYWHITE);
            DrawText("Congrats! You created your first window!", 190, 200, 20, LIGHTGRAY);
        EndDrawing();
    }

    CloseWindow();

    return 0;
}