An open source distribution refers to a version or package of software that has been made publicly available under an open source license. An open source license allows anyone to use, modify, and distribute the software without any legal or licensing restrictions, as long as they follow the terms of the license.
An open source distribution typically includes the source code of the software, as well as any documentation or tools needed to build and run the software. Users can customize the source code and distribute their modified versions, either privately or publicly.
Commonly, open source distributions are created and maintained by a developer community that joins forces to develop new features and improve the software.
The most popular example of an open source distribution is Linux.