Our github account is here: https://github.com/PeARSearch/
We are not yet release ready. We plan on making our first release later this year. Please feel free to hangout at our IRC channel: #pears on Freenode.
We are at a very early stage of development and we have got a lot of work to do. Any kind of contribution would be highly appreciated.
Thanks, very exciting project. I already made another post in this comments section before reading this (I was that excited :P). I see there's plans for a FF-plugin which is great news. My mind is a little blown as I have never really thought about P2P-search as a possibility. Less centralized power over search is a great and important cause (imo).