Though many applications should work well in both the kubuntu and ubuntu desktop environments, those of us making a shift from one to the other may want a list of equivalents. Lovers of Amarok may find it to be a resource hog when loaded in Gnome. Since I can't find such a list (alternativeto.net does not differentiate KDE from Gnome) and since many external applications may not work well or have unresolved dependencies in KDE or Gnome (such as dropbox), I am proposing a rough list of equivalents here.
Please let me know if you want me to add or correct something.
KDE /// Gnome
kwrite /// gedit
filelight /// baobob
koffice /// ???
amarok /// rhytmbox
kopete /// empathy
adept /// synaptic
kpackagekit /// software-center
dragonplayer ///totem
knote,basket /// tomboy
krusader /// gnome-commander
partitionmanager /// palimpsest
klipper /// parcellite
dolphin /// nautilus
??? /// grsync
ark /// fileroller
kalarm /// alarm
??? /// nautilus-dropbox
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