A Data Envelopment Analysis Tools for Excel. XLDEA provides this sophisticated analysis for performance evaluation in the most suitable environment, the MS Excel. It produces extensive results for the main DEA models used today, and automatically creates Excel charts. In view of the analyst's need to present his/ her results in a professional way, XLDEA also supports the production and customization of Macromedia Shockwave Flash charts which can be easily transferred to any browser-based environment.