There is a mailing list for rackview. You're welcome to subscribe to it at http://lists.sourceforge.net/mailman/listinfo/rackview-devel
If you'd like to discuss development or usage of rackview online in realtime, you're welcome to join us on IRC:
If you haven't used IRC before, you may need to install an IRC client. For Windows, a common IRC client is mIRC, available at http://www.mIRC.com/. For Linux, several IRC clients are available, such as irssi (http://www.irssi.org), xchat (http://www.xchat.org), and others you can find at http://freshmeat.net and other places.