Miscellaneous
Positioning tooltips and popovers is difficult Popper is here to help Popper is the de facto standard to position tooltips and popovers in modern web applications

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

Live chat
Accessible live chat and chatbot software for sales marketing and customer support on your website Start talking to your customers today

JavaScript libraries
jQuery The Write Less Do More JavaScript Library

Analytics

UI frameworks
Powerful extensible and feature packed frontend toolkit Build and customize with Sass utilize prebuilt grid system and components and bring projects to life with powerful JavaScript plugins

CDN
The recommended free CDN for Bootstrap Font Awesome Bootswatch and Bootstrap Icons

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