ChaosBSD: a FreeBSD fork to serve as a driver testing ground

ChaosBSD is a fork of FreeBSD. It exists because upstream cannot, and should not, accept broken drivers, half-working hardware, vendor trash, or speculative hacks.

We can.

ChaosBSD GitHub page

This is an excellent approach to testing drivers that simply aren't even remotely ready to be included in FreeBSD-proper. It should be obvious that this is not, in any way, meant to be used as a production operating system, as it will contain things that are broken and incomplete on purpose. The name's also pretty great.