Growing the impact of Open Source around the world

The Open Source Initiative is the authority that defines Open Source, recognized globally by individuals, companies, and by public institutions.

October 1 – 3, 2025

A 3-day Virtual Event on Data Governance, and Open Source AI

OUR 2025 roadmap to a stronger ecosystem

Strengthening collaborations with legal experts, policymakers, and maintainers, as well as addressing the complexities of the Open Source Definition in the age of AI.

About the Open Source Initiative

The OSI is the authority that defines Open Source, recognized globally by individuals, companies, and by public institutions.

World speaking sticker

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

Open Education and the Shared Roots of Openness
Members Newsletter – March 2026 Open Education Week invites us to reflect on something that will feel familiar to everyone in this community: the idea that knowledge is most powerful when it is freely accessible, adaptable, …
OSI Adopts SPDX IDs for License URLs
The OSI has standardized license URLs using SPDX identifiers, while carefully preserving compatibility with the many links that already exist across the web and tools.
Help Shape the Research Agenda for Open Technology
Open technologies are increasingly central to digital infrastructure and public policy, but research in the field remains fragmented. The Open Technology Research Network is launching a global consultation to help shape a shared research agenda.
OSI Joins Apereo Foundation in Calling on Higher Education to Reclaim Its Digital Future
The Open Source Initiative (OSI) has signed the Open Letter to the Higher Education Community, joining a growing coalition of educators, technologists, nonprofit leaders, and institutions calling for renewed leadership and intentional investment in open solutions …

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.

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Upcoming Open Source Events

April 2026

Open Community Experience

Open Community Experience

April 21, 2026 - April 23, 2026    
12:00 am
The Open Community Experience brings together developers, researchers, industry leaders, and open -source communities for three days of collaboration and innovation. In 2026, OCX will [...]

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.

The Open Source Initiative in the news