Libpkg, new package tools
Main repository is currently at http://code.google.com/p/libpkg/
For slightly less up to date code, you can visit the Perforce repository here.
This project aims to complete libpkg and produce at least a subset of production level replacements for the current package management utilities on FreeBSD. Project goals and milestones can be seen at http://code.google.com/p/libpkg/.
For an overview of the library, see http://code.google.com/p/libpkg/wiki/APIDesign