You are here: Home / Projects / Open Source License Checklists / 
2022-01-22 - 00:05

Dates and Events:

OSADL Articles:

2022-01-13 12:00

Phase #3 of OSADL project on OPC UA PubSub over TSN successfully completed

Another important milestone on the way to interoperable Open Source real-time Ethernet has been reached

2021-02-09 12:00

Open Source OPC UA PubSub over TSN project phase #3 launched

Letter of Intent with call for participation is now available

2016-11-12 12:00

Raspberry Pi and real-time Linux

Let's have a look at the OSADL QA Farm data

2016-09-17 12:00

Preemption latency of real-time Linux systems

How to measure it – and how to fix it, if it's too high?

Open Source License Checklists - Access to raw data

This is a description of how to access the raw data on which the OSADL Open Source license obligations checklists are based. Please note that the information provided here changes from time to time as it is always a work in progress. Therefore, it is discouraged to store this data locally, but instead obtain it from here or update any local clones on a regular basis.

Each checklist, distinctly denominated by the license's SPDX abbreviation, is located under a link of the form<SPDX>.txt. Apart from all obligations and use cases, this material also contains all additional information, such as indications of copyleft clauses, patent hints and (in-)compatibilities with other licenses. All licenses for which checklists are available are listed below along with a link to the respective SPDX license text and to the checklist raw data file.

The checklists encode license obligations through a canonical vocabulary consisting of language elements (e.g. YOU MUST), actions (e.g. Provide) and terms (e.g. Copyright notice). Every word or expression is clearly defined, and the raw data of a particular definition is located under a link of the form<language,actions,terms>/<LANGUAGE,Action,Term>.txt. The explanation of the language element ATTRIBUTE, for example, is available under the link


The raw data of the OSADL Open Source License Checklists are licensed under the Creative Commons Attribution 4.0 International license (CC-BY-4.0),

© 2017 - 2021 Open Source Automation Development Lab (OSADL) eG and contributors, infoª

Attribution text

"A project by the Open Source Automation Development Lab (OSADL) eG. For further information about the project see the description at"

List of license checklists in raw data form

License nameSPDX abbreviationLink to checklist raw data
Academic Free License v2.0AFL-2.0
Academic Free License v2.1AFL-2.1
Academic Free License v3.0AFL-3.0
GNU Affero General Public License v3.0 onlyAGPL-3.0-only
GNU Affero General Public License v3.0 or laterAGPL-3.0-or-later
Apache License 1.0Apache-1.0
Apache License 1.1Apache-1.1
Apache License 2.0Apache-2.0
Artistic License 1.0 (Perl)Artistic-1.0-Perl
Artistic License 2.0Artistic-2.0
BSD 2-​clause LicenseBSD-2-Clause
BSD-​2-​Clause Plus Patent LicenseBSD-2-Clause-Patent
BSD 3-​clause LicenseBSD-3-Clause
BSD 4-​clause LicenseBSD-4-Clause
BSD 4-​Clause "Original" or "Old" LicenseBSD-4-Clause-UC
Boost Software License 1.0BSL-1.0
bzip2 and libbzip2 License v1.0.5bzip2-1.0.5
bzip2 and libbzip2 License v1.0.6bzip2-1.0.6
Creative Commons Zero v1.0 UniversalCC0-1.0
Common Develop­ment and Dis­tri­bu­tion License 1.0CDDL-1.0
Common Public License 1.0CPL-1.0
curl Licensecurl
Eiffel Forum License v2.0EFL-2.0
Eclipse Public License 1.0EPL-1.0
Eclipse Public License 2.0EPL-2.0
European Union Public License 1.1EUPL-1.1
Freetype Project LicenseFTL
GNU General Public License v2.0 onlyGPL-2.0-only
GNU General Public License v2.0 only WITH Classpath exception 2.0GPL-2.0-only WITH
Classpath-exception-2.0 WITH Classpath-exception-2.0.txt
GNU General Public License v2.0 or laterGPL-2.0-or-later
GNU General Public License v3.0 onlyGPL-3.0-only
GNU General Public License v3.0 or laterGPL-3.0-or-later
Historic Permission Notice and DisclaimerHPND
IBM PowerPC Initialization and Boot SoftwareIBM-pibs
ICU LicenseICU
Independent JPEG Group LicenseIJG
Info-​ZIP LicenseInfo-ZIP
IBM Public License Version 1.0IPL-1.0
ISC LicenseISC
GNU Lesser General Public License v2.1 onlyLGPL-2.1-only
GNU Lesser General Public License v2.1 or laterLGPL-2.1-or-later
GNU Lesser General Public License v3.0 onlyLGPL-3.0-only
GNU Lesser General Public License v3.0 or laterLGPL-3.0-or-later
libpng LicenseLibpng
libtiff Licenselibtiff
MirOS LicenseMirOS
MIT LicenseMIT
Mozilla Public License 1.1MPL-1.1
Mozilla Public License 2.0MPL-2.0
Mozilla Public License 2.0 (no copyleft exception)MPL-2.0-no-copyleft-exception
Microsoft Public LicenseMS-PL
Microsoft Reciprocal LicenseMS-RL
Net Boolean Public License v1NBPL-1.0
NTP LicenseNTP
OpenSSL LicenseOpenSSL
Open Software License 3.0OSL-3.0
Python License 2.0Python-2.0
Qhull LicenseQhull
Reciprocal Public License 1.5RPL-1.5
SunPro Licensen.a.
Unicode License Agreement -​ Data Files and Software (2015)Unicode-DFS-2015
Unicode License Agreement -​ Data Files and Software (2016)Unicode-DFS-2016
Universal Permissive License v1.0UPL-1.0
Do What The F*ck You Want To Public LicenseWTFPL
X11 LicenseX11
XFree86 License 1.1XFree86-1.1
zlib LicenseZlib
zlib/libpng License with Ac­know­ledge­mentzlib-acknowledgement
Zope Public License 2.0ZPL-2.0
Archive of all checklists in raw-data format