Ember.js is an open-source JavaScript web framework, based on the Model–view–viewmodel (MVVM) pattern. It allows developers to create scalable single-page web applications. Developed by emberjs
License: Open Source
Zepto.js is a lightweight JavaScript library focused on simplicity and speed, making it ideal for small projects. In contrast, Ember.js is a robust framework designed for building ambitious web applications with a comprehensive set of features.