see also: GVCS Pattern Language
Product Ecologies illustrate how the different tools of the GVCS work together. For example, motors, power units, and implements interchange within the tractor, microtractor, car, truck, fabrication, and bulldozer infrastructures. Ecologies can also refer to the way in which a set of tools can be put together to produce a wide array of products - such as the induction furnace contributing to the production of tractor parts, construction roofing, or wire.
 Solar Engine Power Ecology
GVCS Components: Sawmill, Hammermill, Haying Equipment (Hay Rake, Hay Cutter, Baler), Solar Concentrator, Batteries, Inverter, Pelletizer, Generator, Steam Generator, Steam Engine, Gasifier Burner, Open Source Car, Open Source Truck.
GVCS Components: Hammermill, Drill Press, Lathe, Ironworker, Open Source Car, Open Source Truck, Steam Engine, Steam Generator, Gasifier Burner, Pelletizer, Tractor, Microtractor, Bulldozer, Sawmill, CEB Press, Induction Furnace, Oxyhydrogen Torch.