Widgets
Pinterest is an image sharing and social media service designed to enable saving and discovery of information

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

JavaScript libraries
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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

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

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