Software distribution model

Software distribution models are ways software developers get their products to users.

Model	Description
Commercial	You have to pay for the software in order to use any portion of it. This is the most common software distribution method, so I don't have a category for it.
Freeware	The software is completely free with no attempt to monetize it or limit your use of it.
Shareware	You get a limited version of the software and are encouraged to purchase the full version which will have more features. Also known as demo software.
Crippleware	Software posing as free, but features in the program are disabled or constrained until you give the developers money.
Nagware	Software posing as free, but includes messages asking you to give the developers money to make the messages go away.
Adware	Software posing as free, but requires you to watch ads to use the program.