JavaScript libraries
Polyfill io is a service which accepts a request for a set of browser features and returns only the polyfills that are needed by the requesting browser

JavaScript libraries
Touch enabled jQuery plugin that lets you create beautiful responsive carousel slider

JavaScript libraries
jQuery The Write Less Do More JavaScript Library

Font scripts
Making the web more beautiful fast and open through great typography

Authentication
Documentation for developers on how to log users into your app or website with Facebook Login

JavaScript libraries
Promise based HTTP client for the browser and node js axios axios

Issue trackers
Self hosted and cloud based application performance monitoring error tracking that helps software teams see clearer solve quicker learn continuously

JavaScript frameworks
React is the library for web and native user interfaces Build user interfaces out of individual pieces called components written in JavaScript React is designed to let you seamlessly combine components written by independent people teams and organizations

Customer data platform
RudderStack is the easiest way to collect unify and activate customer data across your warehouse websites and apps

CDN

Ecommerce
The World Wide Web Consortium W3C develops standards and guidelines to help everyone build a web based on the principles of accessibility internationalization privacy and security