PC-BSD is a desktop operating system based on FreeBSD. Rather than having the user build their own environment from the base operating system, PC-BSD aims to make the FreeBSD experience easy and achievable for the average "casual" computer user. Whether you need quick access to e-mail or a free and Open Source gaming system, PC-BSD is the desktop for you!
From the installation of the system to its use thereafter, PC-BSD's goals are to never have a user run aground of viruses, driver issues, or anything that would impede ease-of-use and general reliability.