RocketFuel

Jenkins is used for running tests before and after merge, for deploying changes and for running periodic tasks, similarly to cron. Jenkins

We're both steadily migrating our legacy code to ES6 and use Babel for our new Frontend projects. Babel

Gulp is used for writing transpiling, bundling, minification, watching and other tasks. gulp

Major part of our UI application uses Backbone models and views extensively. Though there's a plan to migrate to React and Redux. Backbone.js