Public Domain (PD) software on the Amiga refers to programs explicitly released without copyright protection, allowing users to freely copy, distribute, and modify the code without legal restrictions. The Amiga platform hosted one of the most vibrant PD ecosystems in computing history, exemplified by the Fred Fish disk series and the Aminet archive, which distributed thousands of utilities, games, and system enhancements. Unlike Freeware or Shareware, true PD software places no licensing obligations on users and was typically developed by hobbyists purely for community benefit.