What does proprietary software mean?
Normally software creators produce a program and license it for commercial gain; for a variety of business-oriented reasons they do not make its source code openly available to the public. Most proprietary software is released for use only within the strict terms described in its End User License Agreement. These are likely to limit things like numbers of users, places where software can be executed, operations that can be performed and the rights of users to reverse engineer or emulate functionality.
