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

Analytics
Clarity is a free user behavior analytics tool that helps you understand how users are interacting with your website through session replays and heatmaps

Video players
Enjoy the videos and music that you love upload original content and share it all with friends family and the world on YouTube

JavaScript frameworks
Vue js The Progressive JavaScript Framework

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

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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