Update: Just released a newer version of this app which handles the migration of source site glsl.heroku.com to http://glslsandbox.com/
Here is a fork of a project I found on github that retrieves shaders from glslsandbox.com and runs them.
I hacked it a bit to make it run on ipad and load the gallery. Fun for tinkering with fragment shaders on the iPad. Very alpha but if you are a developer and like glsl, check it out.