Zebu 0.1
As one of the maintainers of debian.o-hand.com I use the always wonderful pbuilder and cowbuilder to rebuild packages originally build for Debian Sid for Debian Etch, Ubuntu Gutsy, Hardy, and so on. Continually typing the commands to update the cowbuilders can get tiresome fast so last week I scratched the itch and produced Zebu.
As of version 0.1 it is barely functional but it does let you update or login to a cowbuilder. It requires that the cowbuilders are named /var/cache/pbuilder/*.cow and doesn't support "traditional" pbuilder rootstraps yet, but that is planned. Anyway, cowbuilders are the future.
If anyone else thinks this could be useful there is a tarball and a Bazaar repository. I must also thank the wonderful Ulisse Perusin for the rocking icon he created.
NP: Cosmos, Murcof