AM by AIR
This software package was designed for "analyzing data from complex samples, especially large-scale assessments." It has many functionalities, from simple statistics such as frequencies, to more complex procedures such as regression and complex weighting schemes. Users can import data from a variety of sources (e.g., Excel, SPSS, etc) and output can be displayed in a text file or a web browser. The user interface is not immediately intuitive and would work best for users who are experienced with a variety of statistical techniques.
The link address is: http://am.air.org/


