io.js vs React on Rails: What are the differences?
What is React on Rails? Integration of React + Webpack + Rails using rails/webpacker to build Universal (Isomorphic) Apps (aka Server Rendering). Project Objective: To provide an opinionated and optimal framework for integrating Ruby on Rails with React via the Webpacker gem React on Rails integrates Facebook's React front-end framework with Rails. React v0.14.x and greater is supported, with server rendering. Redux and React-Router are supported as well, also with server rendering, using execJS..
io.js and React on Rails can be primarily classified as "Frameworks (Full Stack)" tools.
React on Rails is an open source tool with 4.32K GitHub stars and 542 GitHub forks. Here's a link to React on Rails's open source repository on GitHub.