Software practice · 2007
The Open Source Definition
Open Source Initiative · Version 1.9 · 22 March 2007
The ten criteria that the distribution terms of a software license must meet to be called open source.
Read the text The whole poster as a web page
- Print from
- A3
- License
- CC BY 4.0
- Source
- opensource.org
- Retrieved
- 27 September 2026
- Language
- English
- Rights holder
- Open Source Initiative
Theme
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Print from A3: the smallest A size at which the body text is at least 8 pt.
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Edition
The page of opensource.org, “Page created on July 7, 2006 | Last modified on February 16, 2024”, which holds version 1.9 of the definition, “last modified, 2007-03-22”. The title of the page is the title of the poster and the version and its date, from the end of the page, are also in the kicker; the dates of the page itself are left out. Links are set as plain text, the rule of the page before its closing lines is kept, and the closing lines stay in italics as on the page. Nothing else is left out.
Rights
The content on this website, of which Opensource.org is the author, is licensed under a Creative Commons Attribution 4.0 International License.
Footer of every page of https://opensource.org, including https://opensource.org/osd, linked to https://creativecommons.org/licenses/by/4.0/. Section 3(a) of CC BY 4.0 asks for the name of the creator, a notice that refers to the license with its URI, the URI of the material and an indication of any modification: the footer of the poster gives them. The page carries no copyright notice of its own.
