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RequireJS - RequireJS is a JavaScript file and module loader.
webdriver-sync - Synchronous JavaScript wrapper around the Java Selenium Webdriver API that eliminated the need for callbacks or promises. Doesn't include any testing framework; you simply use the Selenium Java API.
rollup.js - Rollup is a module bundler for JavaScript which compiles small pieces of code into a larger piece such as application.
Leadfoot -> Intern - "Leadfoot is a JavaScript client library that brings cross-platform consistency to the Selenium WebDriver API.
JSPM - Front End Package Manager, Frontend Development, and Javascript
WebdriverIO - Webdriver module for Node.js. that makes it easier to write Selenium tests