Enzyme is a JavaScript Testing utility for React that makes it easier to assert, manipulate, and traverse your React Components' output.
Enzyme's API is meant to be intuitive and flexible by mimicking jQuery's API for DOM manipulation and traversal.
A framework for building native apps with React.
React Native lets you build mobile apps using only JavaScript. It uses the same design as React, letting you compose a rich mobile UI from declarative components.
Easily add high-quality animation to any native app.
Lottie is an iOS, Android, and React Native library that renders After Effects animations in real time, allowing apps to use animations as easily as they use static images.
Fast 3kB alternative to React with the same modern API.
Closer to the Metal
Preact provides the thinnest possible Virtual DOM abstraction on top of the DOM. The web is a stable platform, it's time we stopped reimplementing it in the name of safety.
Preact is also a first-class citizen of the web platform. It diffs Virtual DOM against the DOM itself, registers real event handlers, and plays nicely with other libraries.
Vue (pronounced /vjuː/, like view) is a progressive framework for building user interfaces.
Unlike other monolithic frameworks, Vue is designed from the ground up to be incrementally adoptable.
The core library is focused on the view layer only, and is easy to pick up and integrate with other libraries or existing projects.
On the other hand, Vue is also perfectly capable of powering sophisticated Single-Page Applications when used in combination with modern tooling and supporting libraries.
Julia is fast!
Julia was designed from the beginning for high performance. Julia programs compile to efficient native code for multiple platforms via LLVM.
Dynamic
Julia is dynamically-typed, feels like a scripting language, and has good support for interactive use.
Optionally Typed
Julia has a rich language of descriptive datatypes, and type declarations can be used to clarify and solidify programs.