The Open Source Definition (OSD) is a policy document published by the Open Source Initiative in 1998. Derived from the Debian Free Software Guidelines written by Bruce Perens, the definition is the most common standard for open-source software. The definition has ten criteria, such as requiring freely accessed source code and granting the open-source rights to everyone who receives a copy of the program. Covering both copyleft and permissive licenses, it is effectively identical to the definition of free software, but motivated by more pragmatic and business-friendly considerations. The Open Source Initiative's board votes on proposals of licenses to certify that they are compliant with the definition, and maintains a list of compliant licenses on its website. The definition has been adapted into the Open Knowledge Foundation's Open Definition for open knowledge and into open hardware definitions.
Open Source Definition in the context of Open-source license
Open-source licenses are software licenses that allow content to be used, modified, and shared. They facilitate free and open-source software (FOSS) development. Intellectual property (IP) laws restrict the modification and sharing of creative works. Free and open-source licenses use these existing legal structures for an inverse purpose. They grant the recipient the rights to use the software, examine the source code, modify it, and distribute the modifications. These criteria are outlined in the Open Source Definition.
After 1980, the United States began to treat software as a literary work covered by copyright law. Richard Stallman founded the free software movement in response to the rise of proprietary software. The term "open source" was used by the Open Source Initiative (OSI), founded by free-software developers Bruce Perens and Eric S. Raymond. "Open source" emphasizes the strengths of the open development model rather than software freedoms. While the goals behind the terms are different, open-source licenses and free-software licenses describe the same type of licenses.
View the full Wikipedia page for Open-source licenseOpen Source Definition in the context of Open knowledge
Open knowledge (or free knowledge) is knowledge that is free to use, reuse, and redistribute without legal, social, or technological restriction. Open knowledge organizations and activists have proposed principles and methodologies related to the production and distribution of knowledge in an open manner.
The concept is related to open source and the Open Definition, whose first versions bore the title "Open Knowledge Definition", is derived from the Open Source Definition.
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