I've posted this link before, but these NLP posts keep popping up on HN, so I'll keep posting.<p>Over at <a href="http://www.repustate.com" rel="nofollow">http://www.repustate.com</a>, we're taking the more common functions that NLTK performs (and the ones it should) and porting them over as web services. NLTK is kind of buggy here & there, and it's not too great if you're dealing with big data sets. Our API, with the obvious handicap of network latency, is lightning fast because we ported many NLTK functions down to raw C.<p>Our API is free so have at it, let me know if you want to see us add anything.