I suggest you can try SPARK Forms builder @ http://www.itlaq.com/ITLAQ_Pages/Pages/Spark.aspx
This innovative new product will allow users and SharePoint admins to easily build highly professional forms inside SharePoint by placing a rich set of drag/drop controls in a user-friendly editor which allows them also to control and configure the control’s properties, style, validations, rules and format which can then be linked to your SharePoint lists and libraries.
SPARK forms will also integrate with Workflows (both SharePoint and Nintex Workflows) allowing the users of these forms to make decisions, perform actions, respond to assigned tasks or even delegate tasks through these forms in a single Actions menu located in the top ribbon of these forms. SPARK forms will be built using predefined templates that are configured for use on the desktop, mobile smartphones and tablets in different browsers to fully support mobile application integration.
ITLAQ had designed SPARK to enable the users to build forms that used to need weeks of development and testing in couple of days, and with the presence of Nintex workflow product the SP professionals will be able to build a complete system in a matter of weeks.