PHP 5.5.15-1+deb.sury.org~trusty+1

   PHP: Hypertext Preprocessor is a general-purpose programming language originally designed for web development.

Gzip Content-Encoding

   The Content-Encoding entity header is used to compress the media-type. When present, its value indicates which encodings were applied to the entity-body. It lets the client know how to decode in order to obtain the media-type referenced by the Content-Type header.

Chunked transfer encoding

   Chunked transfer encoding is a streaming data transfer mechanism available in version 1.1 of the Hypertext Transfer Protocol (HTTP). In chunked transfer encoding, the data stream is divided into a series of non-overlapping "chunks"

Google Fonts API

   Making the web more beautiful, fast, and open through great typography.this website is using Open+Sans:300,400,600,700,800%7CShadows+Into+Light font family

Nginx 1.6.0

   Nginx is a web server which can also be used as a reverse proxy, load balancer, mail proxy and HTTP cache. The software was created by Igor Sysoev and first publicly released in 2004. A company of the same name was founded in 2011 to provide support and Nginx plus paid software.