This software has a free version - with no limitations on number of DMUs, input and output variables, as well as no time limit for
using the free version. Analysis results can be exported in Excel.
2. OpenSourceDEA software http://www.opensourcedea.org/index.php?title=Open_Source_DEA This software is free for use without any time limit. There is also no limit on number of DMUs as well as on input and output variables. Raw data can be easily uploaded from Excel file.