For better or for worse, starting every project with a K does make KDE software very recognisable. Their themes don’t jam with my setup so I use it as a way to avoid most of them, but it’s solid branding. KDE users used to be able to do the same thing with Gnome applications, but Gnome has switched away from that approach.
KOrganizer should just be filed under “o”, though. And I don’t know what krfb does, but it needs a name users can pronounce.