Data Envelopment Analysis can be usefully analyzed by R.

R is definitely free. The packages you need are those related to Data Envelopment Analysis can be Benchmarking, FEAR and nonparaeff:

1) Benchmarking

http://cran.r-project.org/web/packages/Benchmarking/Benchmarking.pdf

2) FEAR

http://www.clemson.edu/economics/faculty/wilson/Papers/fear-els.pdf

3) nonparaeff

http://cran.r-project.org/web/packages/nonparaeff/nonparaeff.pdf

Here you can find some useful tutorials on DEA with R:

http://www.uri.edu/artsci/ecn/burkett/DEAnotes.pdf

http://professorjf.webs.com/DEA%202013.pdf

I hope you can find this material useful,

Kind Regards,

Carlo Drago

Those two programs are open source -free-programs

DEAP v2.1 –

By The centre of Efficiency and Productivity analysis(SEPA )

The University of New England, Australia

http://www.uq.edu.au/economics/cepa/deap.php

OSDEA-GUI-v0.2 -

By open source Data Envelopment Analysis Organization

http://www.opensourcedea.org

https://www.deaos.com/login.aspx?ReturnUrl=%2f

Http://www.uq.edu.au/economics/cepa/deap.php

I found Efficiency Measuresment System (EMS) very useful...you can try it