Pourover machines do not require any plumbing.  Pour pure water into the reservoir to brew.

Automatic machines require hook up to cold water plumbing.  Some have an option to use them like a pourover if necessary.

Airpot brewers require hook up to cold water plumbing.  They brew into airpots and have no warmers

These machines require hook up to plumbing.  They brew into urns or other portable brew pots.  For locations that have a large coffee service need, like convention centers.

Hot water towers make and dispense hot water only.  Used primarily in locations that serve a lot of hot tea.

Manual machines have a pull lever to brew espresso.  Gives an impression of being a more authentic way to make an espresso.

Semi-Automatic machines have a button or switch that you press to start then press to stop the brew cycle.

Automatic machines have preset buttons that regulate the amount of water that is forced through the espresso.

Super Automatic machines grind beans, brew and froth milk by the push of one button.  Some have optional steam wands too.

Grinders with a doser and tamper for consistent espressos.

Grinders for general purpose, proportioned coffee grinding.

Grinders with multiple grind settings for all types of coffee and espresso grinding.