Immutable.js vs MooTools: What are the differences?

Developers describe Immutable.js as "Immutable persistent data collections for Javascript which increase efficiency and simplicity, by Facebook". Immutable provides Persistent Immutable List, Stack, Map, OrderedMap, Set, OrderedSet and Record. They are highly efficient on modern JavaScript VMs by using structural sharing via hash maps tries and vector tries as popularized by Clojure and Scala, minimizing the need to copy or cache data. On the other hand, MooTools is detailed as "*A compact JavaScript framework *". It is a collection of JavaScript utilities designed for the intermediate to advanced JavaScript developer. It allows you to write powerful and flexible code with its elegant, well documented, and coherent APIs.

Immutable.js and MooTools belong to "Javascript Utilities & Libraries" category of the tech stack.

Immutable.js is an open source tool with 28K GitHub stars and 1.62K GitHub forks. Here's a link to Immutable.js's open source repository on GitHub.