Technologies in use by

Websites that accepts payments with American Express.

AddThis, the new brand name for Clearspring Technologies, is the leader in socially connecting publishers, services and advertisers to audiences on the open web. Reaching more than 1.3 billion unique users monthly, AddThis’ social tools and analytics are used on more than 14 million unique domains to distribute and track digital...

Websites using some form of Captcha technology on them.

Anti-bot CAPTCHA widget that helps digitize books by providing snippets of books for people to enter the text for. Owned by Google.

jQuery UI is a curated set of user interface interactions, effects, widgets, and themes built on top of the jQuery JavaScript Library. Whether you're building highly interactive web applications or you just need to add a date picker to a form control.

jQuery: The Write Less, Do More, JavaScript Library.

A family of standard web feed formats used to publish frequently updated information like blog entries, news headlines, audio and video.

Send live or pre-recorded audio and video to iPad, iPhone, iPod touch, and Mac using an ordinary web server.

This site uses the viewport meta tag which means the content may be optimized for mobile content.

Varnish is an HTTP accelerator designed for content-heavy dynamic web sites. In contrast to other web accelerators, such as Squid, which began life as a client-side cache, or Apache and nginx, which are primarily origin servers, Varnish was designed as an HTTP accelerator. Varnish is focused exclusively on HTTP, unlike other pro...

nginx [engine x] is a HTTP server and mail proxy server written by Igor Sysoev.

The DOCTYPE is a required preamble for HTML5 websites.

Allows a website to define how a page is rendered in Internet Explorer 8, allowing a website to decide to use IE7 style rendering over IE8 rendering.

The Open Graph protocol enables any web page to become a rich object in a social graph, a open protocol supported by Facebook

Google's hosted library for web fonts. Allows websites to choose and use fonts from a free, wide variety of fonts.

Sites who has this tag are verfied by google to use WebMaster tools

The http-equiv attribute provides an HTTP header for the information/value of the content attribute. The http-equiv attribute can be used to simulate an HTTP response header.

Indicates that the site provides an interface specifically for searching the document and its related resources.

A canonical link element is an HTML element that helps webmasters prevent duplicate content issues by specifying the "canonical", or "preferred".

By adding rel="home" to a hyperlink, a page indicates that the destination of that hyperlink is the homepage of the site in which the current page appears.

Wesites using favicon rel tag

UTF-8 (8-bit UCS/Unicode Transformation Format) is a variable-length character encoding for Unicode. It is the preferred encoding for web pages.

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