







The sections below appear as annotations to the Open Source Definition (OSD) and are not a part of the OSD. A plain version of the OSD without annotations can be found here. Introduction Open sourc…
Something Big Happened in 1998
It is reasonable to accept that OSI founded Open Source with the Open Source Definition.

Open Source is Broken
The Open Source movement, as championed by the OSI, prizes absolute openness above all other concerns...

Open Source Explained — Open Indie
Musings on the concept of ‘open source’, in the broadest possible definition of the term. Also an invitation to become a participant in ...

Open source is a restaurant
[[Chad Whitacre]] makes a great analogy around when/how software gets paid for, vs food. Open Source is a restaurant. At a restaurant, you eat your meal fir...

Open Source Initiative
The steward of the Open Source Definition, setting the foundation for the Open Source Software ecosystem.

About | Open Source Ecology
The mission of Open Source Ecology (OSE) is to create the open source economy. An open source, libre economy is an efficient economy which increases innovation by open collaboration. To get there, OSE is currently developing a set of open source blueprints for the Global Village Construction Set (GVCS) – a set of the 50 most important machines that it takes for modern life to exist – everything from a tractor, to an oven, to a circuit maker.

Open Source Endowment — World's First Endowment Fund for OSS
The Open Source Endowment provides truly sustainable funding for critical open source software through a community-driven endowment model.

gpt-oss: OpenAI validates the open ecosystem (finally)
OpenAI's first open language model release since GPT 2 and what it means for the ecosystem.

Open Source is a cost-allocation system
Because the right to use the software is not tied to payment, the license does not connect the people who benefit, the people who decide, and the people who bear the costs. Projects have to build those connections deliberately through governance.

Working in Public: The Making and Maintenance of Open S…
An inside look at modern open source software developer…

The Open Source AI Definition – 1.0
version 1.0 See FAQsSee list of endorsementsSee ChecklistEndorse the OSAID Preamble Why we need Open Source Artificial Intelligence (AI) Open Source has demonstrated that massive benefits accrue to…
Tyranny of Permissionlessness
open source’s narrow focus further empowers those with other ways to exclude

Nominate OSS for Funding — Open Source Endowment
Nominate critical, underfunded open source projects for OSE grant funding through our open, community-developed model.

From OSS to Open Source AI: an Exploratory Study of Collaborative...
AI development is embracing open-source paradigm, but the fundamental distinction between AI models and traditional software artifacts may lead to a divergent open-source development paradigm with...

OSF Changes: A Note to Users
The Center for Open Science announced a significant change to the Open Science Framework (OSF). This post shares what led to the change, implications, and what's next.

Open source is the electric vehicle of digital policy
Open source is very popular these days, not least due to the open-source strategy that the European Commission announced last week as part of the tech sovereignty package. While there is a lot to criticise about that strategy (exaggerated goals, misleading numbers etc), the one thing I would like to
