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.
HTML5 Canvas for Internet Explorer
Allows users to Like items they find on the web, similar to how you Like items within Facebook.
Widget for submitting Zendesk support tickets.
A family of web feed formats used to publish frequently updated content such as blog entries, news headlines or podcasts.
The website claims XHTML strict. XHTML Strict is the same as HTML 4.01 Strict but follows XML guidelines. See the link for more information.
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.
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.
Frames Google Chrome window into Internet Explorer for HTML 5 compatibility.
This page contains an icon for iPhone, iPad and iTouch devices.
The OpenSearch description document format can be used to describe a search engine so that it can be used by search client applications.
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.
Last profiled 14th May. Profile will be refreshed on 11th June.
Profile for data.sfgov.org. Link to this page.
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