Principle vs Fuse: What are the differences?
What is Principle? Animate Your Ideas, Design Better Apps. It makes it easy to design animated and interactive user interfaces. Whether you're designing the flow of a multi-screen app, or new interactions and animations, it helps you create designs that look and feel amazing.
What is Fuse? Mobile interfaces for your IT systems. It is a set of user experience development tools that unify design, prototyping and implementation of high quality, native apps for iOS and Android.
Principle and Fuse can be categorized as "Mobile Prototyping & Interaction Design" tools.