Explore resources on Open Source licensing, compliance, intellectual property, AI and regulation from OSI and other leading organizations.
Open Source Licensing
The Open Source Definition
The ten criteria that define Open Source software.
OSI Approved Licenses
Search licenses reviewed and approved by OSI.
Understand common conflicts with the Open Source Definition.
Join license-discuss
Discuss licensing questions and licenses in early development.
Join license-review
Review submitted licenses and help evaluate their compliance with the Open Source Definition.
Open Source Compliance
OpenChain ISO/IEC 5230
The international standard for Open Source license compliance programs.
Open Source Compliance in the Enterprise
A practical Linux Foundation guide to compliance programs, responsibilities and processes.
Introduction to Open Source License Compliance Management
A Linux Foundation course covering licensing, reviews and compliance programs.
Implementing Open Source License Compliance Management
A Linux Foundation course for building an end-to-end compliance system.
Cyber Resilience Act and Security
EU AI Act and CRA: Timelines and Resources
Key dates and guidance for the EU AI Act and Cyber Resilience Act.
Open Source AI
The Open Source AI Definition 1.0
The standard for determining whether an AI system is Open Source.
Patents
Open Invention Network
Patent-risk mitigation and protection for the Open Source ecosystem.
Legal Community
FSFE Legal Network
An international network of professionals working on Free Software legal issues.
Free Software Legal and Licensing Workshop
An annual forum for lawyers, technologists and legal experts.
A legal forum for attorneys from companies leveraging Open Source.