Senga is a development group focused on information retrieval software. The primary purpose of the components distributed on Senga is to build a large scale internet search engine. http://www.senga.org
A computer architecture for a broad range of Natural Language Processing tasks, available under the GNU Public License. Abundant documentation, Java class library, web-based demos. http://www.gate.ac.uk/
Collaborative organization for open source projects related to natural language processing. Lists ongoing projects and documents proposed standard Java and XML APIs. http://opennlp.sourceforge.net/
A system of public domain software for natural language processing. Includes a formalism for compact grammar description, parser generation system, transduction tool. http://www.cs.ru.nl/agfl/
An experimental collaborative filtering service based on "Better Bit Bureaus" which is itself a collaborative venture between Paul Resnik of the Center for Coordination Science at MIT and Brad Miller and others at the University of Minnesota http://www.cs.umn.edu/Research/GroupLens/
A Java GUI editor for editing tree diagrams (such as those employed in constraint-based grammars), existing in both applet and standalone forms. Sample trees and editors. http://www.ltg.ed.ac.uk/software/thistle/demos/index.html
Language parsers and taggers for English, German, French, Spanish, Italian, Dutch, Finnish and Swedish. On-line parser demos and limited documentation available. http://www.connexor.com/
Provides NLP applications based on its proprietary VisualText technology. Product and service information, online software tour, some documentation. http://www.textanalysis.com/