OpenRegs is a website portal which strives to make the proposed and final regulations published in the Federal Register easier to find and discuss.  You can search and track proposed and final regulations by agency or topic, and join discussion groups about the regulations.  You can also subscribe to RSS alerts, to be notified of changes in regulations by topic or agency.  There is also an IPhone app for this website.

The url of OpenRegs is http://openregs.com/