best tools for theme design? : <p>i am looking for bests and usable tools for creating wordpress themes..
and i Astounding in this process
i want something like jQuery to do many things easily like fade, slide, selecting  ... effects. id don't like to use frameworks that help to create faster like bootstrap or etc just want something that has powerful tools for theme design.
like jquery or less....
i find many tools and i don't know exact usage of them
react.js, mootools, ember.js, backbone.js, angular and ....
what usage of them? 
is jquery UI useful?
thanks...</p>
