PushWizard - Push notification delivery and analytics platform.
Unity - The multiplatform game creation tools for everyone.
SashiDo.io - SashiDo is the Parse Alternative for busy people.
Godot Engine - Feature-packed 2D and 3D open source game engine.
Pusher Beams - Send push notifications programmatically at scale
Blender - Blender is the open source, cross platform suite of tools for 3D creation.