Replicator is a set of scripts to automate the duplication of a model computer running GNU Linux (Debian at present), with some provisions to take into account differences in hardware (like HD size,... More
We tend to think of "open source" as referring only to software. But in fact there are some open source projects out there that cross the line from digital bits to physical atoms.
One of the most fascinating is the RepRap project, which has as its goal nothing less than an open source machine that can duplicate itself.