Razor is a research project in package management to explore the benefits of combining higher level dependency solving (yum) and management of installed packages (rpm) into one tool with a efficient, custom storage backend.
The main goal is to get dependency solving and package installation as fast as possible, but also to design robustness into the process by controlling on-disk formats and network protocols tightly.
We have a razor mailing list on freedesktop, go to the list info page to sign up or read the archives. The razor source code is in a git repository on freedesktop and you can either clone it like this:
$ git clone git://git.freedesktop.org/git/razor
or browse the source code. There is also a #razor IRC channel on freenode.org where I (krh) usually hang out, feel free to jump in and ask questions.