Google Analytics

Google Analytics Usage Statistics · Download List of All Websites using Google Analytics

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.

Application Performance · Audience Measurement · Visitor Count Tracking

Sirvoy

Sirvoy Usage Statistics · Download List of All Websites using Sirvoy

Hotel booking software

Bookings

Facebook

Facebook Usage Statistics · Download List of All Websites using Facebook

The website mentions facebook.com in some form.

Apache

Apache Usage Statistics · Download List of All Websites using Apache

Apache has been the most popular web server on the Internet since April 1996.

nginx

nginx Usage Statistics · Download List of All Websites using nginx

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

UTF-8

UTF-8 Usage Statistics

UTF-8 (8-bit UCS/Unicode Transformation Format) is a variable-length character encoding for Unicode. It is the preferred encoding for web pages.

HTML 4.01 Transitional DTD

HTML 4.01 Transitional DTD Usage Statistics

Claims HTML 4.01 Transitional DTD, which includes presentation attributes and elements that W3C expects to phase out as support for style sheets matures.

Cascading Style Sheets

Cascading Style Sheets Usage Statistics

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

Javascript Usage Statistics

JavaScript is a scripting language most often used for client-side web development.

Content Type Options

Content Type Options Usage Statistics

Used to disable MIME-sniffing for a particular HTTP response.

HTTP3 Alt-Svc

HTTP3 Alt-Svc Usage Statistics

HTTP3 support test via the Alt-Svc HTTP header.