Just built a recent ChezScheme for FreeBSD 10.1 and DragonFly 4.6. I'll probably make proper packages for it later, but for until then here are the binaries:
Or if you want to build it yourself, here are the boot images:
In order to use them just unpack the appropriate version (or all of them) to
UPD: I started working on FreeBSD port for ChezScheme, you can follow me on github. It doesn't work yet -- I just started. Also I submitted a pkgsrc package, but right now it can only be built for Linux and there is an issues with DESTDIR support. Hopefully I'll fix it soon.