References from Wikipedia.com
term used to denote a set of principles and methodologies related to the production and distribution of knowledge goods in an open manner
is free online access to articles that have traditionally been published in scholarly journals. Most open access material in this context is distributed via the World Wide Web. 
publishing of scholarly & educational materials
Budapest Open Access Initiative
number of distinct types of legal monopolies over creations of the mind, both artistic and commercial, and the corresponding fields of law. Under intellectual property law, owners are granted certain exclusive rights to a variety of intangible assets, such as musical, literary, and artistic works; discoveries and inventions; and words, phrases, symbols, and designs.
is 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, after which time the work is said to enter the public domain.
is an intellectual property designation for the range of content that is not owned or controlled by anyone. These materials are "public property", and available for anyone to use freely for any purpose.
is software that is liberally licensed to grant the right of users to study, change, and improve its design through the availability of its source code.
an approach to the design, development, and distribution of software, offering practical accessibility to a software's source code.
Open Source Definition
is software that can be used, studied, and modified without restriction, and which can be copied and redistributed in modified or unmodified form either without restriction, or with minimal restrictions only to ensure that further recipients can also do these things and that manufacturers of consumer-facing hardware allow user modifications to their hardware.
Free Software Foundation
Copyleft, GNU General Public License
Creative Commons licenses
Open Source licenses
Reference: Lakhan, Shaheen E., and Kavita Jhunjhunwala. 2008. Open Source Software in Education. EDUCAUSE Quarterly 31(2): 32-40. Available at http://connect.educause.edu/Library/EDUCAUSE+Quarterl y/OpenSourceSoftwareinEduca/46592. Lakhan, Shaheen E., and Kavita Jhunjhunwala. 2008. Open Source Software in Education. EDUCAUSE Quarterly 31(2): 32- 40. Available at http://connect.educause.edu/Library/EDUCAUSE+Q Lakhan, Shaheen E., and Kavita Jhunjhunwala. 2008. Open Source Software in Education. EDUCAUSE Quarterly 31(2): 32- 40. Available at http://connect.educause.edu/Library/EDUCAUSE+Quarterl y/OpenSourceSoftwareinEduca/46592. Lakhan, Shaheen E., and Kavita Jhunjhunwala. 2008. Open Source Software in Education. EDUCAUSE Quarterly 31(2): 32- 40. Available at http://connect.educause.edu/Library/EDUCAUSE+Quarterl y/OpenSourceSoftwareinEduca/46592.
(OSC) An movement to make source material accessible to students, instructor, administrators, parents, and governing bodies. Designers, content experts, and technical advisors work together to create a complete curriculum, to which all users can contribute.
(OER) are online resources that provide free applications and learning materials for academic institutions. These resources can be modified and redistiributed.
Free license fees for software Flexibility of open source products: customizable, updated with new features from open source community Service continuity: large, collaborative open source network reduces risk of loss of service; volunteer help is available through online forums Continous improvement Students and teachers are more directly involved in e-learning vs a decreased role of adminstration
Software may be hard to use for beginners Open source products may not be compatible with other software. There are no guarantees on time of project completion, which depend on volunteers, funding and resources. Intellectual property rights may have legal implications for patents of open source software. Product documentation and customer support are not a priority.