Firebase - Firebase is a cloud service designed to power real-time, collaborative applications for mobile and web.
Unity - The multiplatform game creation tools for everyone.
Parse - Build applications faster with object and file storage, user authentication, push notifications, dashboard and more out of the box.
Godot Engine - Feature-packed 2D and 3D open source game engine.
AWS Mobile Services - Storage, Analytics, Push Notif. & SMS Delivery SDKs
Blender - Blender is the open source, cross platform suite of tools for 3D creation.