Proprietary Software

Proprietary software or closed source software is computer software licensed under exclusive legal right of the copyright holder. The licensee is given the right to use the software under certain conditions, while restricted from other uses, such as modification, further distribution, or reverse engineering.

Complementary terms include free software, licensed by the owner under more permissive terms, and public domain software, which is not subject to copyright and can be used for any purpose. Proponents of free and open source software use proprietary or non-free to describe software that is not free or open source.

A related, but distinct categorization in the software industry is commercial software which refers to software produced for sale, but without meaning it is closed source.

According to Eric S. Raymond, in the Jargon File, "In the language of hackers and users" it is used pejoratively, with the meaning of "inferior" and "a product not conforming to open-systems standards".

Read more about Proprietary Software:  Software Becoming Proprietary, Legal Basis, Exclusive Rights, Abandonment By Owners, Pricing and Economics, Similar Terms, Examples

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... cd2usb hacktolive No DasBoot SubRosaSoft Proprietary software No dd Paul Rubin, David MacKenzie, and Stuart Kemp Free software Yes dd for windows Chrysocome and John Newbigin GPLv2* Yes Debian ... Jack Free software Yes WinToFlash Novicorp Free for personal use Yes WinUSB colingille Free software Yes Wubi Canonical Ltd Free software Yes Yumi ...
Proprietary Software - Examples
... Well known examples of proprietary software include Microsoft Windows, Adobe Flash Player, PS3 OS, iTunes, Adobe Photoshop, Google Earth, Mac OS X, Skype, WinRAR, and some versions of Unix ... Software distributions considered as proprietary may in fact incorporate a "mixed source" model including both free and non-free software in the same distribution ... Most if not all so-called proprietary UNIX distributions are mixed source software, bundling open source components like BIND, Sendmail, X Window System, DHCP, and others along with a purely proprietary kernel and ...

Famous quotes containing the word proprietary:

    Words can have no single fixed meaning. Like wayward electrons, they can spin away from their initial orbit and enter a wider magnetic field. No one owns them or has a proprietary right to dictate how they will be used.
    David Lehman (b. 1948)