codeSpark - Teach young kids basic computer science with video games
Scratch - Scratch is the programming language & online community where young people create stories, games, & animations.
Amazon Kids+ - Kids+ provides the digital content kids want, with safe age-appropriate boundaries that give parents peace of mind.
Cyberix3D - Free online 3D Game Maker. Make your own 3D games online!
Sonlight - Sonlight offers a complete Christian homeschool curriculum for PreK-12 that you can purchase for your kids.
Castle Game Engine - An open-source 3D/2D game engine for ObjectPascal.