SFML Alternatives

Simple DirectMedia Layer is a cross-platform multimedia library designed to provide low level access to audio, keyboard, mouse, joystick, 3D hardware via OpenGL, and 2D video framebuffer.

Libgdx is a Java game development framework that provides a unified API that works across all supported platforms.

nCine is a cross-platform 2D game engine in C++ for fast and performant game development.

Allegro 4 and Allegro 5 are cross-platform, libraries mainly aimed at video game and multimedia programming. They handle common, low-level tasks such as creating windows, accepting user input, loading data, drawing images, playing sounds, etc.

Oxygine is completely free and open source (MIT license) 2D game engine, available on GitHub. It is written in C++ and runs on MacOSX, iOS, Android, Windows and Linux.

CrossBrowdy is an open-source and free JavaScript framework that let developers create multimedia apps, game engines, games, emulators and so on.

GLFW is an Open Source, multi-platform library for OpenGL, OpenGL ES and Vulkan development on the desktop. It provides a simple API for creating windows, contexts and surfaces, receiving input and events.

raylib is a 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.

AGKSharp is a free implementation of AppGameKit to be used with C# and .NET.

A platform independent 2d game programming framework for c/c++ programmers with least possible dependencies for easy porting and with focus on easy API calls and the requirement of commercial programmers.