United States Department of Defense (2009年10月16日). “Defining Open Source Software (OSS)”. 2018年2月9日閲覧。 “Careful legal review is required to determine if a given license is really an open source software license. The following organizations examine licenses; licenses should pass at least the first two industry review processes, and preferably all of them”
Fedora. “Licensing:Main Overview”. 2018年2月20日閲覧。 “This list is based on the licenses approved by the Free Software Foundation , OSI and consultation with Red Hat Legal.”
“Categories of free and nonfree”. GNU Project (2018年1月1日). 2018年3月5日閲覧。 “If the source code is in the public domain, that is a special case of noncopylefted free software.”
“Categories of free and nonfree”. GNU Project (2018年1月1日). 2018年3月5日閲覧。 “In some cases, an executable program can be in the public domain but the source code is not available. This is not free software, because free software requires accessibility of source code.”
Pieter Gunst (2015年8月15日). “Open Source Software: a legal guide”. LawGives. 2018年3月8日閲覧。 “Most open source licenses do not provide any warranties, but instead will provide the software "AS IS."”
“Shared Source Initiative”. Microsoft. 2018年2月15日閲覧。 “the Shared Source Initiative Microsoft licenses product source code to qualified customers, enterprises, governments, and partners for debugging and reference purposes”
mozilla.org
Mozilla. “MPL 2.0 FAQ”. 2018年2月9日閲覧。 “The MPL is a simple copyleft license.”
“OSI Board Meeting Minutes, Wednesday, March 4, 2009”. Open Source Initiative (2009年3月4日). 2013年4月3日閲覧。 “[...] the following licenses to be discussed and approved/disapproved by the Board. [...] WTFPL Submission: [...] Comments: It's no different from dedication to the public domain. Author has submitted license approval request -- author is free to make public domain dedication. Although he agrees with the recommendation, Mr. Michlmayr notes that public domain doesn't exist in Europe. Recommend: Reject”