Uploader Window - Easy File Uploader for your websites and apps
Unity - The multiplatform game creation tools for everyone.
Uppy.io - Next open source file uploader for web browsers
Godot Engine - Feature-packed 2D and 3D open source game engine.
Filestack - Simple file uploader and robust APIs for uploading, transforming, and delivering any file into your app. Filestack is a collection of tools and powerful APIs that make it simple to upload, transform, and deliver content.
Blender - Blender is the open source, cross platform suite of tools for 3D creation.