Seal is a Python library of code for computational linguistics. Among other things, it contains:

CAUTION: this is research code and very much under active development; use at your own risk. Bugs and design flaws remain. There are some incompatible changes between one version of the software and the next; code written that uses one version may need updating to work with the next version.


Cass is a partial parser that used to be available from this page. Unfortunately, it no longer compiles under current versions of gcc, and fixing the problem would require a fairly substantial rewrite. If you want the old tarfile, it is here.