eManger sits on top of WP Jumpstart, a Twitter Bootstrap Theme Framework, created by Jason Bobich. More information on the framewok and how to create a child theme, visit: http://www.wpjumpstart.com
Over the years of development, eManager went in and out of different form engines. Orignally, we started with Formidable and then moved to Gravity Forms for increase signature functionality. Now eManager uses ACF Lite (Advanced Custom Fields) to handle all of its form processing. Get More information about ACF at http://www.advancedcustomfields.com.