Refers to any computer
software that has
restrictions on any combination of the usage, modification, copying or
distributing modified versions of the software. Proprietary software usually can
be distributed at no cost or for a fee. Proprietary software may also be called
closed-source software.
See "Is
Software Ownership the Same as Licensing?" in the in the "Did
You Know..." section of Webopedia.
Also see "All
About Software: Categories of applications software explained" in the "Did
You Know..." section of Webopedia.