THE open source ai definition 1.0
We have released the first stable version of the Definition.
About the Open Source Initiative
The OSI is the authority that defines Open Source, recognized globally by individuals, companies, and by public institutions.
The leading voice on the policies and principles of open source
Protecting the Open Source ecosystem
We support institutions and individuals working together to create communities of practice in which the healthy open source ecosystem thrives.
From the blog
Reimagining data for Open Source AI: A call to action
The Open Source Initiative (OSI) and Open Future have published a white paper: “Data Governance in Open Source AI: Enabling Responsible and Systematic Access.” This document is the culmination of a global co-design process, enriched by …
OSI’s board of directors in 2025: details about the elections
The OSI board of directors is renewing 3 of its seats with an open election process among its full individual members and affiliates.
Open Source AI and policy from the perspective of East Asia
Highlighting key conversations at the latest COSCUP focused on democratizing AI and exploring how public sectors and enterprises adopt Open Source technologies: how advocates in East Asia are addressing critical challenges in these Open Source landscapes.
Top Open Source licenses in 2024
The top 20 OSI-Approved licenses most frequently sought out by our community in 2024 based on number of pageviews.
Support Open Source
As a public charity organization, OSI is supported by donations of corporations and individuals. Thanks to our sponsors that support our vision to be the leading voice on policies and principles of Open Source.
Upcoming Open Source Events
January 2025
EU Open Source Policy Summit
The EU Open Source Policy Summit is Europe’s premier event for high-level open source policy discussions. This Summit provides a platform for the new EU administration to engage in meaningful dialogue with the European open source community. As authorities on the innovation model powering the digital domain, our speakers will explore ways to harness open source and global collaborative innovation to establish a competitive and sovereign digital environment. The event will feature insights from leading policymakers, OSS business leaders, software stewards, advocates, and academics. Together, they will share their perspectives and propose strategies for shaping the digital policy framework over the next five years.
February 2025
FOSDEM 2025
FOSDEM is a free event for software developers to meet, share ideas and collaborate. Every year, thousands of developers of free and open source software from all over the world gather at the event in Brussels. You don't need to register. Just turn up and join in!
March 2025
All Things Open AI
All Things Open AI is an AI practitioners and users conference focused on technologies, processes and people. We believe AI is and will be transformative, and [...]
The Linux Foundation Member Summit
An annual gathering for Linux Foundation members that fosters collaboration, innovation, and partnerships among the leading projects and organizations working to drive digital transformation with [...]
OpenSource.net is a resource for the community
The news site a not-for-profit platform for sharing knowledge, perspectives and advocacy to support a healthy open ecosystem.