Guys, not to undermine the fine work done by almiteycow, but Valknut is by no means dead. It might not have some of the features that Apex and other Windows clients have, but I've gotten it to do everything that I need and to "play nice" on a hub with all sorts of clients and versions of Apex, from 0.4.0 to 1.0.0Beta4. I have used Linuxdc++ too and IMO Valknut is the better option of the two.
http://sourceforge.net/project/showfiles.php?group_id=181579