Photo galleriesJavaScript libraries
Open source JavaScript image gallery and lightbox

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

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

Analytics
VK is a Russian online social media and social networking service

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