If you install Kate with apt-get in the terminal be sure to install only what you need:
sudo apt-get update
sudo apt-get install kate --no-install-recommends
You might try Scribes or cream.
Scribes focuses on streamlining your workflow. It does so by ensuring
that common and repetitive operations are intelligently automated and also
by eliminating factors that prevent you from focusing on your tasks.
The result is a text editor that provides a fluid user experience,
that is easy and fun to use and that ensures the safety of your
documents at all times.
Cream's motto is "Cream makes the powerful Vim text editor easy!". It brings
a completely different look and feel to the VIM for those who are used to more
intuitive editors while still preserving the more powerful features of VIM.
It features pull-down menus, color themes, bookmarking, auto spellcheck and
more. It leaves the default VIM untouched and is started by running 'cream'.