When is software described as open source
What is open source software? | Opensource.com
http://opensource.com/resources/what-open-source
Open source commonly refers to software that uses an open development process and is licensed to include the source code. Find out what open source ...
Open-source software - Wikipedia
http://en.wikipedia.org/wiki/Open-source_software
Open-source software (OSS) is computer software with its source code made available with a license in which the copyright holder provides the rights to study, ...