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

Payment processors
Stripe powers online and in person payment processing and financial solutions for businesses of all sizes Accept payments send payouts and automate financial processes with a suite of APIs and no code tools

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

Web frameworks
CanJS is a JavaScript framework for building CRUD apps in fewer lines of code