Bazaar Style From Eric Raymond's The Cathedral and the Bazaar: Linus Torvalds's style of development - release early and often, delegate everything you can, be open to the point of promiscuity

Cathedral Style From Eric Raymond's The Cathedral and the Bazaar: Software carefully crafted by individual wizards or small bands of mages working in splendid isolation, with no beta to be released before its time.

Copyleft A term from GNU which states that anyone who redistributes the software, with or without changes, must pass along the freedom to further copy and change it. Copyleft guarantees that every user has freedom.

Copyright The exclusive rights of the owner of the copyright on a work to make and distribute copies, prepare derivative works and perform and display the work in public

For free To specifically imply 'for zero price.'

Free Software Refers to the users' freedom to run, copy, distribute, study, change and improve the software. More precisely, it refers to three levels of freedom:

The freedom to study how the program works and adapt it to your needs. The freedom to redistribute copies so you can share with your neighbor. The freedom to improve the program, and release your improvements to the public, so that the whole community benefits.

Freeware Programs released only as executables, with source code not available, but is distributed to users for free (cost of zero).

GNU Recursive Acronym: "GNU's Not Unix".

GPL General Public License, usually referring to the GNU GPL.

Monopolist The point of view that favors proprietary software development due to the implicit financial advantages. Dubbed 'monopolost' since the code is controlled and edited by only one source.

Non-Monopolist The point of view that favors open source software development due to advantages in information collaboration and the bazaar style of development.

Noosphere The sphere of human consciousness and mental activity especially in regard to its influence on the biosphere and in relation to evolution

A term modelled after "atmosphere" and biosphere" signifying (a) the space occupied by the totality of information and human knowledge collectively available to man and (b) the processes operating in this space, e.g., combinatorial mating, classification, reproduction, simplification, selective decay.

Open Source Software Software distributed that not only allows free access to the source code, but also free redistribution of the original and of derived works. It further entails that no discrimination against persons, groups or any field of endeavor is permissable.

Piracy Relating to the illegal use and distribution of proprietary software. According to Richard Stallman software companies that refer to software piracy would imply that illegal copying is ethically equivalent to attacking ships on the high seas, kidnapping and murdering the people on them.

Stallman remarks that neutral terms such as "prohibited copying" or "unauthorized copying" or even a positive term such as sharing information with your neighbor could be used as a substitute.

POV(s) Acronym: "Point Of View" or "Points Of View"

Proprietary software Software that is not free or semi-free. Its use, redistribution or modification is prohibited, or requires you to ask for permission, or is restricted so much that you effectively can't do it freely.

Public domain software Software that is not copyrighted.

Shareware Shareware products are fully functional and freely redistributable but have a license that mandates eventual purchase by both individuals and corporations. Many internet utilities (like "!WinZip") take advantage of shareware as a distribution method