More Porcelains?

Nick Hengeveld [off-list ref] writes:

Good point - use of environment variables is more consistent.  Use of
command-line arguments is a bit more convenient in my case since I'm
driving the transfer from a perl script, but I suppose consistency is
more important...

Now you made me curious.

How many of you are working on your own Porcelains, announced or
unannounced?  I know about Cogito and StGIT ;-).  In a distant
past I have heard of something called JIT but I think it is now
defunct.  Matthias Urlichs said he is doing something with
Python.  Anybody else?