For Use on Light Backgrounds

Support our mission

Help us protect the Open Source Definition

Donate and join as full member today!

I support OSI

To simplify software development

We define Open Source

The Open Source Definition is the foundation of the modern software ecosystem. We build a world where the freedoms and opportunities of Open Source software can be enjoyed by all.

Learn more
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.

Donate now to protect Open Source
Results of 2024 elections of OSI board of directors
The polls just closed, the results are in. Congratulations to the returning directors Thierry Carrez and Josh Berkus, and the newly elected director Chris Aniszczyk.
Open Source AI Definition – Weekly update Mar 18
Busy? Here is the summary of the top discussions on OSI's forums.
ClearlyDefined at the ORT Community Days
Once again Bosch’s campus in Berlin received ORT Community Days, the annual event organized by the OSS Review Toolkit (ORT) community. ORT is an Open Source suite of tools to automate software compliance checks.
Three perspectives from FOSS Backstage
FOSS Backstage is a conference that fosters discussions around three complementary perspectives: a) community health and growth, b) project governance and sustainability, and c) supply chain compliance and security.
View All

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.

Book time with us

Our programs are supported by

And people like you!

Become a supporting member today.

View all sponsors

Events

Open Source AI Definition Town Hall – March 22

https://osi.gl.rna1.blindsidenetworks.com/rooms/osi-grp-8m9-yi6/join

Join Stefano Maffulli, Executive Director at the Open Source Initiative to hear the latest news, and comment on the drafts of the Open Source AI Definition.

Read More

Open Source AI Definition Town Hall – Apr 5

https://osi.gl.rna1.blindsidenetworks.com/rooms/osi-grp-8m9-yi6/join

Join Stefano Maffulli, Executive Director at the Open Source Initiative to hear the latest news, and comment on the drafts of the Open Source AI Definition.

Read More

Open Source Summit NA 2024

Seattle, Washington
–
Read More

The Free Software Legal and Licensing Workshop 2024

Gothenburg, Sweden
–
Read More

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.

Read OpenSource.net

The Open Source Initiative in the news

More articles quoting the Open Source Initiative.