There is a BSD-focused buildbot at https://buildbot.pixelminers.net/ for admins running *BSD relays: FreeBSD, NetBSD, OpenBSD. . .
The buildbot is a useful tool for Tor developers working on development versions of Tor. The BSDs are particularly important for a variety of reasons, including addressing portability issues with Tor code. Certainly the operating system monoculture problems with the Tor network shouldn't need any comments at this point (ie RFC5961).
For those interested in enlisting their BSD relay, this TDP blog post provides more information:
https://torbsd.github.io/blog.html#buildbot
http://bptfp7py2wclht26.onion/blog.html#buildbot
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