Relay Framework vs Preact: What are the differences?
Developers describe Relay Framework as "A JavaScript Framework for Building Data-Driven React Applications, by Facebook". Never again communicate with your data store using an imperative API. Simply declare your data requirements using GraphQL and let Relay figure out how and when to fetch your data. On the other hand, Preact is detailed as "Fast 3kb alternative to React with the same ES6 API". Preact is an attempt to recreate the core value proposition of React (or similar libraries like Mithril) using as little code as possible, with first-class support for ES2015. Currently the library is around 3kb (minified & gzipped).
Relay Framework and Preact can be categorized as "Javascript UI Libraries" tools.
Relay Framework and Preact are both open source tools. Preact with 26.6K GitHub stars and 1.46K forks on GitHub appears to be more popular than Relay Framework with 14.7K GitHub stars and 1.46K GitHub forks.
Facebook, Inato, and Mathspace are some of the popular companies that use Relay Framework, whereas Preact is used by Google, Bigblue, and Awardit. Relay Framework has a broader approval, being mentioned in 53 company stacks & 75 developers stacks; compared to Preact, which is listed in 23 company stacks and 90 developer stacks.