theftware 

a program that makes use of stolen source code

SX OS is theftware, it violates the licence of the stolen source code. But that's ok as long you use it to play your smash bros for free.

theftware by Samuel Underground September 9, 2018

theftware 

Software that cannot be bought and is only available due to a theft.

Aegis.

theftware by doomsword July 16, 2003