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

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

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

Tag managers
Google Tag Manager helps make website tag management simple with tools solutions that allow small businesses to deploy and edit tags all in one place

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

Security
reCAPTCHA is a security service that protects your websites from fraud and abuse

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

JavaScript libraries
SweetAlert2 a beautiful responsive customizable and accessible WAI ARIA replacement for JavaScript s popup boxes

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Bitly xe2 x80 x99s Connections Platform is more than a free URL shortener with robust link management software advanced QR Code features and a Link in bio solution