I am an artist and the sole maintainer of Dream Studio, a free and open source creative system (on SourceForge). Though most of the software is maintained by others who maintain their own Ubuntu PPAs, which are included with Dream Studio by default (which is, itself, based on standard desktop Ubuntu), I create the default themes and overall look of Dream Studio, package the various multimedia categories, create the installer disc (and Dream Studio for Ubuntu), and write a couple of the programs and scripts included with the distribution.