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

Rack::Cache is a component to enable HTTP caching for Rack-based applications such as Rails.

Ruby on Rails is an open-source web framework that is optimized for programmer happiness and sustainable productivity. Note that Ruby on Rails has two detection techniques and this is one of them.

Ruby on Rails is an open-source web framework that is optimized for programmer happiness and sustainable productivity.

Modernizr allows you to target specific browser functionality in your stylesheet.

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.

Public specification of a preferred URL for a page allows search engines to understand the original location for content.

The Google Font API helps you add web fonts to any web page.

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

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 contains tags that are specific to an HTML 5 implementation.

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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