React vs Zepto: What are the differences?
React: A JavaScript library for building user interfaces. Lots of people use React as the V in MVC. Since React makes no assumptions about the rest of your technology stack, it's easy to try it out on a small feature in an existing project; Zepto: Minimalist JavaScript library for modern browsers, with a jQuery-compatible API. While 100% jQuery coverage is not a design goal, the APIs provided match their jQuery counterparts. The goal is to have a ~5-10k modular library that downloads and executes fast, with a familiar and versatile API, so you can concentrate on getting stuff done.
React and Zepto belong to "Javascript UI Libraries" category of the tech stack.
"Components" is the primary reason why developers consider React over the competitors, whereas "Lightweight " was stated as the key factor in picking Zepto.
React and Zepto are both open source tools. It seems that React with 132K GitHub stars and 24.5K forks on GitHub has more adoption than Zepto with 14.5K GitHub stars and 4.06K GitHub forks.