Rec Room - Rec Room is an Action, Role-playing, First-person Shooter, Sports, and Multiplayer video game developed and published by Against Gravity.
Unity - The multiplatform game creation tools for everyone.
Kit55 - The Dev Server GUI for Static Websites. Easy to use, super fast desktop app that will compile your html templates for you.
Godot Engine - Feature-packed 2D and 3D open source game engine.
Kodeclik - Kodeclik is an online coding academy for Kids and Teens.
Blender - Blender is the open source, cross platform suite of tools for 3D creation.