CleverCactus Share seems pretty cool. I have only just installed it. But it was pretty difficult due to some issues that other people also are having with it on Gentoo linux.

So the following are the steps you should take:

$ mkdir cc
$ cd cc
$ tail -n +219 ../share_linux_beta.sh |tar xzvf -
$ java -cp i4jruntime.jar com.install4j.runtime.Launcher launch \
com.install4j.runtime.installer.Installer \
false false true false "" true true 0 0 "" 20 20 "Arial" "0,0,0"  8 500 \
"version beta" 20 40 "Arial" "0,0,0" 8 500 -1

This should bring up the installer allowing you to install it. If you are running kde you can then copy the .desktop entry to your program menu.

cp clevercactus\ share.desktop ~/.kde/share/applnk/Internet/