Textable is an open source program for text analysis. It offers a set of basic text-analytic components (e.g. import text from files, segment into words, measure segment diversity, etc.), which the user combines using a visual interface to build custom analytic workflows.
TXM is a free and open-source cross-platform Unicode, XML & TEI based text analysis software, supporting Windows, Mac OS X and Linux. It is also available as a J2EE standard compliant portal software (GWT based) for online access with access control built in.