Are there any good ruby on rails opensource job board apps out there?

Searched hi and low and havent found anything that usefull yet.
Could build myself but rather contribute to a community effort.

Does anyone know of any job boards or has plans on working on one ?
I found these: ( problems get
up and running, very simple ) ( seems a dead
project )

Who can share some other resources if exists, or want to start on a
opensource job board?