Russ Allbery has released version 2.13 of remctl, a "client/server protocol for running single commands on a remote host using Kerberos v5 authentication and returning the output". It's an incredibly useful piece of software, and I'm using it a lot at home and at work.
I'm especially happy because 2.13 includes with it my python client bindings, so you can make calls to a remctl server directly from python, without having to call the remctl client binary. It's the first real piece of software I've written that has been really released to a wider audiance, which makes me giddy in some respects.
My next project, when I get enough Round Tuits(TM) is to build a python server library, so that one could implement a remctl server directly in python.