ARIES Natural Language Tools Proprietary tools for the lexical work on the Spanish language. Free demo, documentation. http://www.mat.upm.es:80/~aries/description.html

Natural Language Software Registry A directory of academic, commercial and proprietary software with specifications and licensing terms. From DFKI Saarbrücken. http://registry.dfki.de/

Phrasys Natural Language Processing A variety of services for natural language technology developers, including consultancy, commercial software and freeware. Features a Java component useful for string analysis. http://www.phrasys.com

GATE: General Architecture for Text Engineering 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/

TextAI: Text Analysis International Provides NLP applications based on its proprietary VisualText technology. Product and service information, online software tour, some documentation. http://www.textanalysis.com/

Cogilex Company offering expert services and customized tools for natural language processing. Site features demo download of the "QuickTag and QuickParse" utility for Windows, also online tools. http://www.cogilex.com

Thistle 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

Public Domain Language Engineering Generic Tools Lecture by Tomaz Erjavec, including text, slides and links. From the 1996 TELRI conference. http://nl.ijs.si/telri/pub-tools/

Annotate Tool for semi-automatic graphic annotation of corpora. License, documentation, screenshot. Requires GCC and MySQL, in addition to registration. http://www.coli.uni-sb.de/sfb378/negra-corpus/annotate.html

Morphological and Orthographic Tools for English UNIX tools for the analysis and synthesis of text, from Sussex's John Carroll. GZIP downloads, descriptions, related publications. http://www.cogs.susx.ac.uk/lab/nlp/carroll/morph.html

KPML Access Page Graphically based language engineering program, developed for working with large-scale grammars under the Systemic Formal Linguistics framework. Downloadable program images, documentation, resources and source code. http://www.fb10.uni-bremen.de/anglistik/langpro/kpml/README.html

GroupLens 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/

Senga: Information Retrieval Software 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

Banter Technology Develops technologies for natural language processing, semantic analysis and adaptive business process automation http://www.banter.com

OpenNLP 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/

Smart Tutorial A tutorial on the SMART IR system from Cornell. Put together by Hans Paijmans with a technical report on the implementation of an earlier version of SMART. http://pi0959.uvt.nl/Paai/Onderw/Smart/hands.html

Natural Language Understanding in Arabic Some basic exercises for programmers building Arabic text analysis programs. http://www22.brinkster.com/sheh80/NLP/

Connexor Parsers 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/

AFGL Project: Affix Grammars over a Finite Lattice 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/

The Turing Test Article from the Stanford Encyclopedia of Philosophy. http://plato.stanford.edu/entries/turing-test/