Does anyone know of software that will aid in the comparison of two or more texs in order to determine specific use of sources? Ideally, the software would recognize a base text and then compare it to other texts that are potential sources.

I know of software applications like Collate that does some basic comparative work in order to create an apparatus criticus for critical editions, or the "authorship" testing software that Peter Miliken at Leeds developed using stylometrics (which only outputs statistical results and no textual output). But I am looking for software that would compare units of texts (such as sentence to sentence) and one--here's the kicker--that might also work with an inflected language like Latin (so that it would include returns that differ only in terms of case ending). I know that's a tall order, and I have my doubts that something like this exists--but I thought someone on this list might know of some code kicking around in somebody's virtual basement.

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Dr James R. Ginther, PhD
Assoc. Professor of Medieval Theology
& Director of Graduate Studies
Dept of Theological Studies
St Louis University
ginthej@slu.edu
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dept: http://theology.slu.edu/
research: http://www.digitaltheology.org/
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"Research is what I'm doing when I don't know what I'm doing."
-Wernher von Braun