jQuery UI vs T3: What are the differences?

What is jQuery UI? Curated set of user interface interactions, effects, widgets, and themes built on top of the jQuery JavaScript Library. Whether you're building highly interactive web applications or you just need to add a date picker to a form control, jQuery UI is the perfect choice.

What is T3? Client-side JavaScript framework for building large-scale web applications, created by Box. T3 is different than most JavaScript frameworks. It's meant to be a small piece of an overall architecture that allows you to build scalable client-side code. T3 is explicitly not an MVC framework. It's a framework that allows the creation of loosely-coupled components while letting you decide what other pieces you need for your web application. You can use T3 with other frameworks like Backbone or React, or you can use T3 by itself.

jQuery UI and T3 can be categorized as "Javascript UI Libraries" tools.

jQuery UI and T3 are both open source tools. jQuery UI with 10.7K GitHub stars and 5.06K forks on GitHub appears to be more popular than T3 with 1.59K GitHub stars and 160 GitHub forks.