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| Copyright | a form of intellectual property that gives the author of an original work exclusive right for a certain time period in relation to that work, including its publication, distribution and adaptation. |
| Copyleft | a play on the word copyright, and usually refers to a copyright licensing scheme in which an author surrenders some but not all rights under copyright law. |
| software license agreement | a contract between a software company and the purchaser/user of that software. The software license grants the user specific rights to use the software in particular ways |
| EULA | a legal document that governs the use of all software applications. When software is purchased, the purchaser does not actually "own" the software itself |
| first-sale doctrine | doctrine allows the purchaser to transfer (i.e., sell or give away) a particular lawfully made copy of the copyrighted work without permission once it has been obtained |
| shrink-wrap license | a software license agreement which is enclosed within a software package and is inaccessible to the customer until after purchase |
| click-wrap license | one that is accepted on-screen during installation of the software |
| source code | any collection of statements or declarations written in some human-readable computer programming language |
| Proprietary software | software that is owned by an individual or a company (usually the one that developed it). |
| Public domain | “materials” (including software) that is not owned or controlled by anyone |
| Freeware | computer software that is available for use at no cost or for an optional fee |
| Shareware | proprietary software that is provided to users without payment on a trial basis and is often limited in its features |
| contract of adhesion | a contract between two parties that does not allow for negotiation. |
| free software license | a software license which grants recipients rights to modify and redistribute the software which would otherwise be prohibited by copyright law. |
| open source license | a copyright license for computer software that makes the source code available under terms that allow for modification and redistribution without having to pay the original author |
| GNU General Public License | grants the recipients of a computer program the rights of the free software definition and uses copyleft to ensure the freedoms are preserved, even when the work is changed or added to. |
