Reactide
The first dedicated IDE for React web application development
...Reactide runs an integrated Node server and custom browser simulator eliminating the need to configure any servers, build-tools, and even offers hot module reloading right out of the box. To get started, just input your .js and .html entry points inside Reactide's universal configuration. Once those entry points are changed, go ahead and run "npm run reactide-server". Navigate through a live-representation of your app’s architecture. Reactide also offers integration with Create React App for faster project boilerplate configuration. The simulator and component tree are both functioning for all React applications.