Download of xlDEA 2.1 was on the developer's website when we last checked. We cannot confirm if there is a free download of this software available.
According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software. This software is an intellectual property of Productivity Tools. XlDEA lies within Office Tools, more precisely Document management.
From the developer:
Data Envelopment Analysis (DEA) is a powerful method widely used in the evaluation of performance of Decision Making Units (DMUs). These can be business units (for example points of sales, bank branches, dealers, franchisees), government agencies, police departments, hospitals, educational institutions, and even people (DEA has been used in the assessment of athletic, sales and student performance).
You may want to check out more software, such as PDF Transformer, eXcelatorCTR or Twiddlebit Pocket Plan, which might be similar to xlDEA.