Open Source Initiative

The Open Source Initiative (OSI) is the steward of the Open Source Definition, the most widely used standard for open-source software.

Founded in 1998, the Open Source Initiative coined the term open source in opposition to the free software movement. While free software is the same thing as open-source software, OSI preferred to make a pragmatic and business-friendly case for open-source software.

For most of its existence, the OSI's activities have been focused on the definition and certifying software licenses as compliant with it. OSI originally had a closed organizational model, but began to switch towards a membership organization in the 2010s to raise more money and expand its activities. Provided by Wikipedia