fieldmethods asks: "One area where Open Source and Free Software doesn't seem to have really taken off is Natural Language Processing (using computers to deal with human languages). There are a few projects that are open source, such as Festival (a speech synth system, now ported to Java), NLTK, a general-purpose NLP system in Python, and the Linguana project, a Perl implementation of a semantic network not unlike Wordnet (but better). Generally, though, there doesn't seem to be a lot of Open Source momentum behind the field as a whole. It's a challenging, difficult field that would benefit from collaboration, especially given the potential of replacing static corpora with on-the-fly corpora developed by search engines. Is anybody else interested in this?"