CAT – Coding Analysis Toolkit
http://texifter.com/Solutions/CAT

CAT is a service of the Qualitative Data Analysis Program (QDAP), and hosted by the University Center for Social and Urban Research, at the University of Pittsburgh, and QDAP-UMass, in the College of Social and Behavioral Sciences, at the University of Massachusetts Amherst. CAT was  the 2008 winner of the “Best Research Software” award from the organized section on Information Technology & Politics in the American Political Science Association. Texifter personnel created the FISMA-compliant, cloud computing Coding Analysis Toolkit, or CAT, which is useful for classifying and adjudicating all kinds of CAT-style datasets as well as the merged work of users of ATLAS.ti. The CAT system  is the end product of ten years of NSF-funded public comment classification work by Dr. Stuart W. Shulman. On May 5, 2010, CAT was released as open source software. Since it fall 2007 launch, CAT users have created more than 2,000 accounts, uploaded more than 4,500 datasets, and recorded more than a million human judgments. This will be  added to Script Resources Subject Tracer™.