FreeBSD is probably the most popular operating system that most people have never heard of. Currently celebrating its 30th anniversary, FreeBSD is a performant, secure, Unix-like operating system with many advanced features that fills a lot of the same rolls as Linux, but is developed with quite different philosophical underpinnings. In this episode we explain what FreeBSD is, why some companies choose to use it instead of Linux, and expose some of the common consumer devices that you may not be aware run code derived from it.