Sorry for the shameless plug but I thought users on itch.io would be interested in a plugin I've developed for Unity. It allows users to add Retina/HDPI support to WebGL builds. What does that mean? Well you may or may not know that your WebGL builds are actually running at half the resolution on Macs with Retina displays. This plugin fixes that.
Asset store: http://u3d.as/CjZ
Free debug version http://u3d.as/Cpw
Hopefully some of you may find it useful and help you show your projects in all their pixely goodness.