GPIO over Internet (Raspberry Pi)

http://www.instructables.com/id/Web-Control-of-Raspberry-Pi-GPIO/
http://forums.connectedly.com/raspberry-pi-f179/how-controlling-gpio-pins-via-internet-2884/

http://www.raspberrypi.org/documentation/remote-access/web-server/apache.md
http://www.raspipress.com/2012/09/tutorial-install-apache-php-and-mysql-on-raspberry-pi/
http://www.wikihow.com/Make-a-Raspberry-Pi-Web-Server

Tomcat
http://www.element14.com/community/community/raspberry-pi/raspberrypi_projects/blog/2014/05/02/tomcat-on-my-pi
https://heirloomcomputing.zendesk.com/entries/21669897-Running-a-Web-Application-on-Raspberry-Pi
https://alextheedom.wordpress.com/raspberry-pi/installing-java-7-and-tomcat-7/


https://code.google.com/p/webiopi/
http://raspberrywebserver.com/gpio/


http://computers.tutsplus.com/tutorials/take-control-of-your-raspberry-pi-using-your-mac-pc-ipad-or-phone--mac-54603