If you are interested in using the DEAFrontier for education and research purposes, you can download a free trail version of DEAFrontier which includes the following DEA models:

• Envelopment Models (CRS, VRS; input-oriented)
• Multiplier Models (CRS, VRS; input-oriented)
• Slack-based Models (CRS additive model)
• Measure-specific Models (CRS, VRS; input-oriented) (The measures selected are controllable, and the ones not selected are uncontrollable.)

The maximum number of DMUs is allowed in the free trail version is 20.