The Open Definition

Short description: Text definition of the term 'open' in the context of open content and open data

The Open content logo

The Open Definition is a document published by the Open Knowledge Foundation (OKFN) (previously Open Knowledge International) to define openness in relation to data and content.[1] It specifies what licences for such material may and may not stipulate, in order to be considered open licences.[2] The definition itself was derived from the Open Source Definition for software.[2]

OKFN summarise the document as:[1]

> Open means anyone can freely access, use, modify, and share for any purpose (subject, at most, to requirements that preserve provenance and openness).

The latest form of the document, published in November 2015, is version 2.1.[2] The use of language in the document is conformant with RFC 2119.[2]

The document is available under a Creative Commons Attribution 4.0 International License,[1] which itself meets the Open Definition.

In 2023, the OKFN launched an initiative called: Updating the Open Definition to meet the challenges of today with the goal to revisit concepts and relaunch debates to reach a consensus on what we mean by “open” and how can policymakers and communities guide their legal and policy choices better to preserve and advance access to knowledge, innovation and creativity.

## Contents

* 1 History
* 2 See also
* 3 References
* 4 External links

## History

* August 2005:[3] Circulation of the first draft of the Open Definition, v0.1.
* July 2006: publication of v1.0
* November 2009: publication of v1.1
* October 2014: publication of v2.0
* November 2015: publication of v2.1
* March 2023: Launch of the initiative to Updating the Open Definition to meet the challenges of today.

## See also

* Berlin Declaration on Open Access to Knowledge in the Sciences and Humanities
* Budapest Open Access Initiative
* Definition of Free Cultural Works
* UNESCO 2012 Paris OER Declaration
* Updating the Open Definition to meet the challenges of today

## References

1. ↑ 1.0 1.1 1.2 "The Open Definition Defining Open in Open Data, Open Content and Open Knowledge". Open Knowledge International. https://opendefinition.org.
2. ↑ 2.0 2.1 2.2 2.3 "Open Definition 2.1". Open Knowledge International. https://opendefinition.org/od/2.1/en/.
3. ↑ "History - Open Definition". Open Knowledge International. https://opendefinition.org/history/.

## External links

* Why the Open Definition Matters for Open Data, September 2014 blog post by Rufus Pollock, founder and president of OKI

* v
* t
* e

Free-culture and open-source movements

Concepts and
practices|

| Key concepts|

* Commons-based peer production
* Crowdsourcing
* Gratis versus libre
* Open collaboration
* Openness
* Participatory culture
* Sharism

| Social peer-to-peer processes|

* Peer-to-peer banking
* Peer-to-peer carsharing
* Peer-to-peer lending
* Peer-to-peer ridesharing

|

Research and science|

* Citizen science
* Open science
* Access
* Notebook science
* Research
* Science data
* Plan S

Data, information,
and knowledge|

* Free content
* Knowledge commons
* Open communication
* Open knowledge
* Content
* Data

Communication
and learning|

| Media|

* Collaborative writing
* Democratic media
* Open publishing
* Participatory media
* Peer review

|

Education|

* Open education
* Educational resources
* University
* Admissions
* Open-door academic policy

Journalism|

* Citizen media
* Citizen journalism and Wiki journalism
* Open-source journalism

Economy, production,
and development|

| Products|

* Free and open-source software - FOSS
* Free/Libre software
* Open-source software
* Open-design movement
* Robotics
* Open gaming
* Open-source architecture
* Open-source hardware

|

Economic principles|

* Gift economy
* Open innovation
* Open patent
* Open standard
* Sharing economy

Politics and governance|

* Open government
* Open-source governance

Organizations|

* Creative Commons
* Free Software Foundation
* Open Architecture Network
* Openmod initiative
* Open Knowledge International
* Open Rights Group
* Open Source Initiative
* Open Web Foundation
* P2P Foundation
* Pirate Party
* PLOS
* SPARC

Activists|

* Tim Berners-Lee
* Alexandra Elbakyan
* Cody Wilson
* Lawrence Lessig
* Peter Murray-Rust
* Douglas Rushkoff
* Richard Stallman
* Peter Suber
* Peter Sunde
* Aaron Swartz
* Matthew H. Todd
* John Wilbanks

Projects and
movements|

* DIYbio
* Free-culture movement
* Free software movement
* Open science movement
* Open Source Ecology
* Open-source software movement
* OpenCores
* OpenWetWare
* Sci-Hub

| Tools|

* Licenses
* Creative Commons
* GPL
* Definition Docs
* Free Cultural Works
* Free Software
* Open
* Open Source
* Open Data Indices
* Open educational resources
* Open music model
* Open Web movement

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