Wagner James Au sez, "OpenWorm, as the name suggests, is a collaborative open source project to computationally create a simple artificial life form -- an earth worm -- from the cellular level to a point where it's sophisticated enough to solve basic problems. They're still in early stages, with the latest demo, a developer on the project tells me, being 'a particle simulation of five connected muscle segments moving together through a body of water.'"

An Open Source Artificial Life Project Called OpenWorm (Thanks, James!)