Originally patented in 1933 by Alfonso Bialetti, stovetop style coffee makers use steam pressure from boiled water in the lower section to pass through coffee grounds in the mid chamber of the pot. This style is often called Moka preparation and the original style of percolator is still available today for $20-50.
They're easy to clean and usually don't require additional filters. The most simple Bialetti style pots it right on top of the stove and can also be used to make Cuban Coffee.
More modern types include electric or tabletop Percolators, aimed to serve big groups or keep coffee warm after it's been brewed. We recommend a Moka coffee pot with Medium / Coarse beans to best extract our flavors.