Amethyst vs Cocos2D-X: What are the differences?
Amethyst: Data-oriented and data-driven game engine written in Rust. Uses gfx-rs to render graphics with OpenGL, and soon Vulkan and Metal. It is meant to be used for 2D and 3D, with various utilities for both types of games; Cocos2D-X: Open source game engine. Cocos2d-x is an open-source and cross-platform open source free 2D game engine for mobile game development known for its speed, stability, and ease of use.
Amethyst and Cocos2D-X can be primarily classified as "Game Development" tools.