The document provides an outline and overview of open source software. It discusses how open source software is free but also has an open license allowing customization of the source code. Popular open source tools are mentioned for tasks like file sharing, screen recording, and office productivity. Open source software has advantages like increased flexibility, reduced vendor lock-in, and potential cost savings. Support for open source software is discussed, as well as resources for learning more about applying open source in libraries. Sections two and three then provide extensive lists of available open source software for libraries, education, and general tasks.