Godot Engine - Feature-packed 2D and 3D open source game engine.
Mac Mouse Fix - A simple way to make your 3rd party mouse better.
DragonRuby Game Toolkit - DragonRuby Game Toolkit is a commercial-grade, yet beginner-friendly, 2D game engine.
Smooze - Smooze animates your scroll and adds functionality to your non-Apple mouse (scroll-wheel mouse).
RPG Maker - Make your own PC game with RPG Maker. Our easy to use tools are simple enough for a child, and powerful enough for a developer. Try it free today!
Smart Scroll - Smart Scroll makes scrolling smoother, faster and more comfortable: