Virtual Cogs, similar to gumstix that came before them, are tiny ARM based “single board computers” with a family of proprietary add on modules. While not the first on the scene, Virtual Cogs’ front page boldly announces they are “open source hardware done right.” When most people think open source hardware, Arduino or Ethernut immediately come to mind. These two projects freely distribute their schematic and layout files in Eagle format for no charge. Virtual Cogs will provide you with schematics (in an undisclosed format) for a particular part after you have purchased it, but that’s it - no layout files. The concept of open source hardware is much newer than its software counterpart, and perhaps that accounts for the difference in opinions, but I still wonder what VC is thinking.