Seal is my Python library of NLP code. It is work in progress, which I am posting for comment and in case anyone finds it useful. Among other things, it contains:
- an end-to-end traditional language-understanding system, including a resolution theorem prover as back end,
- GLab, a browser-based "notebook" system for formal languages and grammar-writing that I use for teaching,
- an implementation of the Universal Corpus data model,
- an implementation of an oracle-driven dependency parser.
It is very much under active development, and I make no promises that future changes will be backwards-compatible.
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.