nginx [engine x] is a HTTP server and mail proxy server written by Igor Sysoev.
Optimizely is a way for you to improve your website through A/B testing.
Google Analytics offers a host of compelling features and benefits for everyone from senior executives and advertising and marketing professionals to site owners and content developers.
TradeDoubler is an international performance-based digital marketing company. Tracking clicks on sites.
The DOCTYPE is a required preamble for HTML5 websites.
The website uses conditional comments that are supported by Microsoft Internet Explorer. They allow web developers to show or hide HTML code based on the version of the viewer's browser.
W3C Recommended definition of the type of stylesheets used in a document.
This page contains an icon for iPhone, iPad and iTouch devices.
Cascading Style Sheets (CSS) is a stylesheet language used to describe the presentation of a document written in a markup language. Its most common application is to style web pages written in HTML
This page contains tags that are specific to an HTML 5 implementation.
The page shows content with an iframe; an embedded frame that loads another webpage.
UTF-8 (8-bit UCS/Unicode Transformation Format) is a variable-length character encoding for Unicode. It is the preferred encoding for web pages.
Last updated 19th June.
We track technology usage on over 150 million websites showing which sites use shopping carts, analytics, hosting and many more.
Sign up for Free
Download the BuiltWith Google Chrome Extension and get website lookups directly in your browser.
Download the BuiltWith Safari Extension and get website lookups directly in your browser.
Download the BuiltWith Firefox Addon and get website lookups directly in your browser.
The Builtwith Bookmarklet, to install, drag this link to your browser toolbar: BuiltWith Bookmarklet
Can't find the technology? Send us a suggestion, we'll add it to our database.