title: Any open source or licenseable spend analysis front end toolkits?
body: <p>I'm looking for any libraries or code tool-kits to create a front end of sorts where a user can drill down through data, apply filters, perform a spend analysis of recent purchases. Is there anything like this out there? I'm thinking similar to how there are admin themes for rails apps that give you some basic data viewing capabilities except I want something that can be used to filter and drill down into a data-set and would show graphs and charts summarizing categorical data. </p>
  
  <p>An image search for "spend analysis dashboard" gives some good examples of the style of GUI toolkit I'm thinking about.</p>