BSD This category is for everything BSD - FreeBSD, FreeNAS, pfSense, etc… VFIO Windows Place to Discuss Windows. Mac The place to Discuss Apple Mac OS and Software for Apple Computers. Looking Glass This is the official topic for the Looking Glass KVMFR Project. Feel free to ask for help or discuss the project here. This topic’s intent is to provide an official home for Looking Glass discussion outside of Discord/IRC and try to bring this community together in a commonplace. Open Source & Web-Based Place to discuss Open Source Software. Linux Welcome to the Linux category.