AlteruPhono is a software tool for developing and testing models of regular sound change. The user inputs a phonetic string to which will be applied a set of rules for phonetic changes. The rules are provided in a separate file almost as a programming language, and the program output shows, one by one, all the changes the word is passing by.
auCDtect is a free console program for determining the authenticity of musical CD records, using the character of the audio information it contains, and predict its possible source is it an original studio record or a reconstruction from a lossy encoded data.
Liar Liar is a voice stress analysis tool. Sometimes used as an audio lie detector (i.e. used for detecting stress in a person's voice to allow for the determination of truthfulnessin a statement).