OpenSourceEcology has the mission to create open source versions of 50 technologies they consider fundamental to "human civilization". One of the few technologies they've actually succeeded in open sourcing is a tractor

https://www.opensourceecology.org/portfolio/tractor/

They also have a 3d printer, a microhouse, a CEB press, and a power cube

https://www.opensourceecology.org/gvcs/