The document discusses open source software and its use in libraries. It provides examples of popular open source applications like Ubuntu Linux, OpenOffice, Firefox, and Wine. It also shares case studies of two libraries that implemented open source solutions. Crawford County Library used open source to save $35,000 by not upgrading Windows and had positive user feedback. Howard County Library connected all branches efficiently and avoided leasing costs by using open source. The University of North Carolina also used open source successfully for kiosks to avoid Windows security issues and keep costs low.