forward-char (Ctrl-F), backward-char (Ctrl-B) for Kate pre 3.4.
Some of these actions are only activated in older KTextEditor versions that don’t support them by themselves yet.
Since it is a pure KTextEditor plugin, it is available for a all KDE applications that use the libkatepart for editing, among these are KDevelop, Kile, Kate, Quanta Plus and many more.
It’s a great plugin to enhance your KDE texteditors as long as there is no Kemacs.