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.

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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
Salesforce: Why we sponsor OSI
This month, we’re pleased to spotlight one of our sponsors, Salesforce, and learn why  Open Source is important to their organization.
Containers can be safer with Open Source
The Open Source project SlimToolkit addresses one of the most critical issues in the cloud-native ecosystem today: container security.
Diving in to Open Source supply chain; connecting and collaborating with communities
After one month at OSI, I’ve started forming a full picture of supply chain compliance and security ecosystem.
Open Source Approved License® registry project underway with help of intern, Giulia Dellanoce
I shared last month the details of the new OSI website, hosted on WordPress. One…
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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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Our programs are supported by

Datastax

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Events

  • PyCon – April 19-23, 2023

    At PyCon US 2023 happening in Salt Lake City, UT, you will find a program filled with pre-conference tutorials and sponsor presentations, 90+ community talks, keynote speakers, a lively Expo… Read More

The board of directors

Most of OSI’s board of directors are elected by individual members and Affiliate organizations.

Meet the board