Website concrete5.org

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.

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.

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.

Amazon Route 53 is a highly available and scalable Domain Name System (DNS) web service.

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

Transactional and marketing email delivery system.

Previously Google Apps for Business. G Suite is a cloud-based productivity suite that helps you and your team connect and get work done from anywhere on any device. It's simple to setup, use and manage, allowing you to work smarter and focus on what really matters.

Stripe is a developer-friendly way to accept payments online and in mobile apps.

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

Open graph url 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 title entity tag

Open graph description entity tag

The act of searching for an object. Related actions: FindAction: SearchAction generally leads to a FindAction, but not necessarily.

A web page. Every web page is implicitly assumed to be declared to be of type WebPage, so the various properties about that webpage, such as breadcrumb may be used. We recommend explicit declaration if these properties are specified, but if they are found outside of an itemscope, they will be assumed to be about the page

Sites using Html 5 Video Tag

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".

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.