https://www.fda.gov/about-fda/cdrh-offices/public-domain-data-modeling-and-software
Data, modeling, and software developed by government employees are considered public domain. Therefore, these tools are free, open, and available to all. To...
public domain datamodelingsoftwarefda
https://www.liveabout.com/open-source-vs-public-domain-3515323
Open source software allows users to access and alter the source code of the program. These applications are not under public domain.
public domain softwareopen sourcevsapplications