Scratch - Scratch is the programming language & online community where young people create stories, games, & animations.
Cyberix3D - Free online 3D Game Maker. Make your own 3D games online!
TurboWarp - TurboWarp is a Scratch mod with a compiler to run projects faster, dark mode for your eyes, a bunch of addons to improve the editor, and more.
Castle Game Engine - An open-source 3D/2D game engine for ObjectPascal.
CodeKit - CodeKit allows you to optimize the performance of your website by automatically and efficiently compiling a variety of popular languages.
Tynker - Game Worlds for Kids to Learn Programming