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Public Domain Is Not Open Source

Open Source and Public Domain are frequently confused. Here’s why it’s a mistake to treat the two terms as synonyms....

July 28, 2017 Post
Frequently Answered Questions

Here are answers to questions we are frequently asked. If you have a question not addressed here, please contact us. Basics...

October 21, 2007 Page
Why datasets built on public domain might not be enough for AI

There is tension between copyright laws and large datasets suitable to train large language models. Common Corpus is a dataset...

May 7, 2024 Post
Convening public benefit and charitable foundations working in open domains

SAN FRANCISCO – July 12, 2023 – The public policy team of the Open Source Initiative (OSI) has launched the...

July 12, 2023 Post
I signed the Public Domain Manifesto

You can read about it here and then decide for yourself whether to sign it as well.

February 3, 2010 Post
Building Public Data for LLMs

Part of the Deep Dive: Data Governance Webinar Series As the capabilities and influence of large language models (LLMs) continue to expand,...

October 7, 2025 Page
Copyright law makes a case for requiring data information rather than open datasets for Open Source AI

The Open Source Initiative (OSI) is running a blog series to introduce some of the people who have been actively...

September 11, 2024 Post
Darshan Sen

Hi, I’m Darshan Sen, an award-winning Governance Member of high-profile Open Source projects such as Node.js and Electron. If you...

May 20, 2025 Page
Karl Horky: From Papercuts to Standards

Hi, I’m Karl Horky (GitHub, LinkedIn), Technical Founder at UpLeveled - tech education programs for all skill levels. In an...

May 20, 2025 Page
OSI Board reponds to FCO Questionaire concerning CPTN Transaction

Towards the end of March, we received a message from the German Bundeskartellamt (Federal Cartel Office or FCO) advising us...

April 7, 2011 Post
OSI Board Meeting Minutes, Monday, January 9, 2012

Quorum Quorum reached and meeting called to order at 16:04 UTC. Attendees Board Members Mr. Michael Tiemann, President Mr. Harshad...

February 10, 2012 Meeting Minutes
2023 in review: many reasons to celebrate

The year of 2023 was a busy one for the Open Source Initiative (OSI), as we celebrated the 25th Anniversary...

December 13, 2023 Post