Technologies in use by

PayPal is a American international e-commerce service that enables to send money and to accept payments without revealing any financial details.

Google Analytics is a service offered by Google that generates detailed statistics about a website's traffic and traffic sources and measures conversions and sales. Google Analytics can track visitors from all referrers, including search engines and social networks, direct visits and referring sites. It also displays advertisin...

Anti-bot CAPTCHA widget that helps digitize books by providing snippets of books for people to enter the text for. Owned by Google.

jQuery: The Write Less, Do More, JavaScript Library.

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

DNS services provided by HostGator.

The DOCTYPE is a required preamble for HTML5 websites.

Google's hosted library for web fonts. Allows websites to choose and use fonts from a free, wide variety of fonts.

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.