Website audubon.org

The Trade Desk is a buy-side platform providing access to all RTB inventory for display, television, video, social, mobile, and more.

HybridTheory (formerly Affectv) is a European audience targeting platform specifically engineered to understand social interactions.

DoubleClick is a provider of digital marketing technology and services. Companies come to DoubleClick for expertise in ad serving, media, video, search and affiliate marketing to help them make the most of the digital medium.

The Trade Desk is a buy-side platform providing access to all RTB inventory for display, television, video, social, mobile, and more.

DoubleClick Advertisers.

Bing Advertisers.

Bing Universal Advertisers.

Facebook Ads Advertisers.

Twitter Advertisers

Facebook Retargeting Pixel

Show you how visitors are really using your website, collect feedback and turn more visitors into customers.

New Relic offers SaaS Application Performance Management and Real User Monitoring for Cloud and Data Center deployed web applications implemented in Ruby, Java, .NET or PHP.

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.

Google Tag Manager makes it easy for marketers to add and update website tags including analytics, remarketing, and more.

A rich hosted Exchange environment for every user without having to manage a server.

DNS Made Easy offers enterprise managed DNS and geographical load balancing services on a global IP Anycast DNS network with a 100% uptime guarantee.

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.

Pantheon hosts Drupal and Wordpress sites, while also delivering staging environments, backups, workflow, a global CDN and HTTPS.

PHP is a widely-used general-purpose scripting language that is especially suited for Web development and can be embedded into HTML.

Website using the € symbol on their website - meaning it may accept payment in Euros.

Website using the £ symbol on their website - meaning it may accept payment in this British currency.

Website using the ¥ symbol on their website - meaning it may accept payment in this South Korean currency.

Website using the ₩ symbol on their website - meaning it may accept payment in this South Korean currency.

Open graph url entity tag

Open graph description entity tag

Open graph type entity tag

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

Open graph image entity tag

Open graph site name entity tag

This page contains a meta robots tag which tells search engines and robots to index or not index the page.

Chrome for Android, since version 39 supports the "theme-color" meta tag to allow websites control the background color of the tab's UI header.

Meta descriptions are HTML attributes that provide concise explanations of the contents of web pages. Meta descriptions are commonly used on search engine result pages (SERPs) to display preview snippets for a given page.

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.

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

Sites using Html 5 SVG Tag

Sites using Html 5 Audio Tag

Sites using Html 5 Video 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.