Cool Visualization of Etsy's Chef Repo 2010-2011
Etsy used Gource, a software version control visualization tool to map Chef Repo.
Software projects are displayed by Gource as an animated tree with the root directory of the project at its centre. Directories appear as branches with files as leaves. Developers can be seen working on the tree at the times they contributed to the project.
Gource uses OpenGL and a 3D accelerated video card to render the displays.