RepRap Family Tree
Did you ever wonder about the history of the reprap ?
http://reprap.org/wiki/RepRap_Family_Tree
It's a visualization of the evolution of the reprap and some other 3d-printers over time (with 150+ projects now, and updated every 2-3 months).
"In the core team, we see what I will call a punctuated animal model of evolution while the larger reprap community is a very vibrant bacterial model." -Forrest Higgs (16-01-2009), about the evolution model of the reprap.
Why oshw is great ? Because it's alive muahaha !
[01/11/2011] update 3.2
[07/01/2012] update 3.3
[14/04/2012] update 4.0
[29/10/2012] Now on github ! https://github.com/EmmanuelG/OpenHardwarePhylogenetics/tree/master/RepRap%20Family%20Tree