Collatex


 * http://collatex.net

Collatex is a software to


 * read multiple (≥ 2) versions of a text, splitting each version into parts (tokens) to be compared,
 * identify similarities of and differences between the versions (including moved/transposed segments) by aligning tokens, and
 * output the alignment results in a variety of formats for further processing, for instance
 * to support the production of a critical apparatus or the stemmatical analysis of a text's genesis.