Probably the Best Free jQuery Slider/Slideshow Plugin for Wordpress. Responsive, Settings & Multiple Sliders!

Fluid Responsive Slideshow is an easy to use slideshow. It's responsive, dummyproof and powered with 50+ beautiful skins.

Awesome Responsive Full Width Background Slider Plugin for full screen slide show in background of your WordPress site.

Sangar Slider is a high quality responsive slider plugin.