KHAN-ACADEMY.APPSPOT.CO...

This website contains tracking information that allows admins to see Facebook Insights out of Facebook to this domain.

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.

This is an analytic platform that is particularly optimized funnel/work-flow optimization.

CrazyEgg provides visualization of visits to your website.

Less Neglect is web software that takes the job of supporting customers to the next level.

Allows a user to make a website more sociable and connected with integrations from the hugely popular Facebook website.

Highcharts is a charting library written in pure JavaScript.

Embedded videos from YouTube.

Allows users to Like items they find on the web, similar to how you Like items within Facebook.

The code to implement a Facebook Like Button on the page.

Official Tweet Button for sharing articles on websites and counting how many times a URL has been shared.

Google+ +1 Button implementation.

Amazon CloudFront is a web service for content delivery. It integrates with other Amazon Web Services to give developers and businesses an easy way to distribute content to end users with low latency, high data transfer speeds, and no commitments.

FeedBurner is the leading provider of media distribution and audience engagement services for blogs and RSS feeds.

A family of web feed formats used to publish frequently updated content such as blog entries, news headlines or podcasts.

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.

Customize the snippet people see when your page is shared on Google+

Tags that webmasters can use to markup their pages in ways recognized by major search providers.

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

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.

JavaScript is a scripting language most often used for client-side web development. Its proper name is ECMAScript, though "JavaScript" is much more commonly used. The website uses JavaScript.

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

This content is formatted for mobile devices, it does not allow the content to be scaled.

The description attribute provides a concise explanation of the page content.

Meta tag containing keywords related to the page.

Identifies administrators for a page which will be able publish data to your wall if you like any content within this page.

This page contains an icon for iPhone, iPad and iTouch devices.

This page contains tags that are specific to an HTML 5 implementation.

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

The X-Frame-Options HTTP response header can be used to indicate whether or not a browser should be allowed to render a page in a frame or iframe. Sites can use this to avoid clickjacking attacks, by ensuring that their content is not embedded into other sites.

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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