EVA vs Pop: What are the differences?
What is EVA? A Customizable Design System easily adaptable to your Brand. Equipping you with hundreds of symbols and dozens or styles configurations, it makes sure the design stays consistent across all of your applications and platforms.
What is Pop? The extensible iOS and OS X animation library behind Facebook's Paper. Pop is an extensible animation engine for iOS and OS X. In addition to basic static animations, it supports spring and decay dynamic animations, making it useful for building realistic, physics-based interactions. The API allows quick integration with existing Objective-C codebases and enables the animation of any property on any object. It's a mature and well-tested framework that drives all the animations and transitions in Paper.
EVA and Pop can be primarily classified as "Mobile Prototyping & Interaction Design" tools.
EVA and Pop are both open source tools. It seems that Pop with 19.7K GitHub stars and 2.9K forks on GitHub has more adoption than EVA with 559 GitHub stars and 23 GitHub forks.