opencart free themes

http://themeglobal.com/opencart/kingstore/
http://themeglobal.com/opencart/themeglobalnew/

http://www.pavothemes.com/opencart-themes/153-pav-protector.html
http://www.pavothemes.com/opencart-themes/156-pav-krstore.html/
http://www.pavothemes.com/blog/theme-release/98-pav-queenbeauty-the-best-free-responsive-opencart-theme-ever.html

http://www.templatemonster.com/free-opencart-cosmetics-store-theme.html
http://www.opencart.com/index.php?route=extension/extension/info&extension_id=26309&filter_search=free%20theme

server monitor

https://nicolargo.github.io/glances/

PHP profiler

https://github.com/aterrien/forp-PHP-profiler

create desktop app from html/js/css

http://electron.atom.io/

gif background video

http://giphy.com/

retina spritegenerator

http://www.retinaspritegenerator.com/

mod serverstatus

http://articles.slicehost.com/2010/3/26/enabling-and-using-apache-s-mod_status-on-centos