nginx [engine x] is a HTTP server and mail proxy server written by Igor Sysoev.
Websites using https protocol.
The DOCTYPE is a required preamble for HTML5 websites.
These websites are related to touchtype.co in terms of content, traffic and structure
typing-lessons.org
typingweb.com
typingmaster.com
typingboss.com
typingtest.com
uglytyping.com
typingtutor-online.com
typeonline.co.uk