A few weeks ago, I downloaded openNLP,
http://opennlp.sourceforge.net/, to have a look at it.
I am still going through it, but so far, I like the API that is on the site. It looks like the creators have put some thought into standard coding practices which makes the API fairly easy to thumb through.
One important point up front: this tool is designed to be used by software developers as a library of tools that can be integrated into other software. openNLP is
not designed as a stand alone product that the customary user can download, install and play with.
The readme file provides an overview and setup tips for the tools.
http://opennlp.sourceforge.net/README.htmlAlso, sourceforge hosts the support forum for openNLP. The forum is fairly active with between 10 and 30 posts per month for the past year.
https://sourceforge.net/projects/opennlp/forumsAs of November 17, 2009, Daniel McLaren still had his blog post about openNLP. The post is 2 years old at this point, but is still helpful. Thanks Daniel!
http://danielmclaren.net/2007/05/11/getting-started-with-opennlp-natural-language-processingMore to follow...
-Stu