Software Archive

• CMU Artificial Intelligence Repository
• Resources Available Through CRL
• SIL Computing Resources
• Linguistics Tools at the University of Vaasa in Finland
• Leeds University, Natural Language Processing Research Group: RESOURCES
• ICOT Free Software
• Netlib Repository (mirror in Japan)

General Information

• Sourcebank - a search engine for programming resources.
• Resources related to content analysis and text analysis - Software
• Some publically available NLP packages
• SAL (Scientific Applications on Linux)
  Artificial Intelligence
• Public Domain Generic Tools: An Overview - a paper written by Tomaz Erjavec
• A collection of online interactive CL tools (Computational Linguistics Group, University of Zurich)
• The LINGUIST List: Software
• The Natural Language Software Registry
• Language Software Helpdesk
  • Frequently Asked Questions
• PennTools - Computational Linguistics Resources At Penn.
• Parsing Resources
• Taggers online, email message containing addresses
• Parsers and Taggers Information (by Steven Paul Abney)
• Relator Language Processing Resources
• Corpus Search Tools
• Neural Networks & Statistics: Software

Tagger, Morphological Analyzer

• A Perl/Tk text tagger
• Conexor
• Cogilex R&D inc - Makers of expert tools for natural language processing
• CLAWS part-of-speech tagger
• TnT - Statistical Part-of-Speech Tagging
• POS tagger for Spanish
• Tagging and Parsing tools
• AUTASYS - A Fully Automatic English Wordclass Analysis System
• TOSCA/LOB tagger
• Relaxation Labelling Based Multi-Tagger
• The QTAG Part of Speech Tagger
• QTAG: A portable Parts of Speech Tagger
• The Alvey Natural Language Tools
• The XTAG Project
• TreeTagger - a language independent part-of-speech tagger
• Xerox Part-of-Speech Tagger
• The Edinburgh/Cambridge Morphological Analyser System
• Winbrill - An adaptation of Brill's tagger to Windows 95/98.
• Eric Brill's Part of Speech Tagger
• Software Plaza: Brill's Tagger
• Morphy - An integrated tool for German morphology and statistical part-of-speech tagging.
• Korean Morphological Analyzer
• Natural Language Tools - Japanese morphological analyzer (JUMAN) and parser (KNP) developed by Nagao Lab. at Kyoto University, Japan.
• WordSmith Tools - Wordsmith Tools is the Swiss Army knife of lexical analysis - an integrated suite of programs for looking at how words behave in texts. It is intended for linguists, language teachers, and anyone who needs to examine language.
  • Mike Scott's Home Page
  • Oxford University Press
• A Lexical Analyzer for HTML and Basic SGML
• ARIES Natural Language Tools - Lexical platform for the Spanish language.

Stemmer

• Porter stemmer
• Porter stemmer
• Dutch Porter stemmer
• IRIS stemmer
• Iterated Lovins stemmer

Collocation

• Xtract - Frank Smadja's Collocation Extractor.

Parser

• Malaga - a system for automatic language analysis
• Attribute-Logic Engine (ALE) System and Grammars - A freeware logic programming and grammar parsing system.
• CG Parser - Natural deduction categorial grammar and lambda-calculus parser.
• Head-Corner Parser (by Gertjan van Noord)
• A basic parser written to illustrate the bottom up parsing algorithms in Natural Language Understanding, Second Edition
• Cass Partial Parser
• CHILL: An empirical parser acquisition system using inductive logic programming
• ISSCO Tools - Left-head-corner Island Parser Compiler, etc.
• Georgetown University Natural Language Processing
  Parser Modularity Demo page
• PC-PATR: A syntactic parser
• IMS Stuttgart: The CUF Web Page - Comprehensive Unification Formalism
• Apple Pie Parser - The Apple Pie Parser is a bottom-up probabilistic chart parser which finds the parse tree with the best score by best-first search algorithm.
• Link Grammar Parser

Corpus Tools

• WebCorp
• Concordances: Producing and Using them
• XCES: Corpus Encoding Standard for XML
• RST Tool - An RST (Rhetorical Structure Theory) Markup Tool.
• RST Annotation Tool
• Qwick - corpus browser
• Linguistic Annotation - This page describes tools and formats for creating and managing linguistic annotations.
• Alembic Workbench - a suite of tools for the analysis of a corpus, along with the Alembic system to enable the automatic acquisition of domain-specific tagging heuristics.
• The System Quirk - Workbench for Terminology, Lexicography and Text Analysis.
• Multext: Multilingual Text Tools and Corpora
• XCorpus - An Environment for Managing Corpus and Multilingual Web Server
• The IMS Corpus Toolbox Webpage
  X
• Kobe Phoenix Laboratory - Corpus Wizard program.
• Concordance - A program for Windows NT 4.0 and Windows 95/98 which makes wordlists, concordances, and Web Concordances from your electronic texts.
• MonoConc (concordance program)
• MonoConc for Windows (concordance program)
• Text Analysis Computing Tools (TACT)
• The Lingua Project: The World of MultiLingual Parallel Concordancing
  (http://prune.loria.fr/~bonhomme/lingua/)
  - Sentences alignment tool in multilingual corpora.
• The Lingua Project: The World of MultiLingual Parallel Concordancing
  (http://www.loria.fr/exterieur/equipe/dialogue/lingua/)
• Textual Corpora and Tools for their Exploration

Language Modeling

• Maximum Entropy Modeling
• Maximum Entropy Modeling Toolkit
• CMU-Cambridge Statistical Language Modeling Toolkit
• CMU Statistical Language Modeling Toolkit by Roni Rosenfeld
  • Program
  • Document
• Trigger Toolkit
• Simple Good-Turing Smoothing
• Smoothing tools software by Joshua Goodman and Stanley Chen
• Language modeling tools
• Statistical Decision Trees

HMM

• A HMM mini-toolkit (by Anand Venkataraman)
• HMM Software
  see also: Exercise: Using a Hidden Markov Model
• Discrete HMM Toolkit
• Hidden Markov Model (HMM) Toolbox
• Meta-MEME: Motif-based Hidden Markov Models of Biological Sequences

Language Identification

• Ted E. Dunning's program
• Gertjan van Noord's program
• Doug Beeferman's program

FSA Tools

• Finite State Utilities
• Automata Learning from Theory to Practice
  • Downloadable Software
• Index to finite-state machine software, products, and projects
• FSA utilities
  • FSA Utilities: A Toolbox to Manipulate Finite-state Automata
• Grail - a symbolic computation environment for finite-state machines, regular expressions, and other formal language theory objects.
• AMoRE - A program for the computation of Automata, Monoids, and Regular Expressions.

Speech

• HTK: Hidden Markov Model Toolkit
• CSLU Toolkit
• The Epos Speech Synthesis System
• ISIP public domain speech to text system
  • The ISIP Automatic Speech Recognition Toolkit
• CSLU Toolkit (Center for Spoken Language Understanding, Oregon Graduate Institute of Science and Technology)
• Computer generation of accent marks
• Spoken Natural Language Processing Group Software
• CMU Error Analysis Toolkit
• Audio Tools
• VOICEBOX: Speech Processing Toolbox for MATLAB

Mathematical Software

• NIST Guide to Available Mathematical Software

Statistics

• Bayesian inference Using Gibbs Sampling
• CoCo - A statistics package for analysis of associations between discrete variables.

Machine Learning

• Machine Learning Toolbox (MLT)
• The Machine Learning Programs Repository
• The RIPPER rule learner
• mFOIL - An ILP systems designed to handle noisy examples.

Support Vector Machine

• SVMLight
• SVM package by William Noble Grundy
• Kernel Machines Web Site

Information Retrieval & Filtering

• Rubryx: Text Classification Program
• seft - a Search Engine For Text
• MG - Managing Gigabytes
• Isearch - software for indexing and searching text documents.
• SMART Software and test collections (Cornell University)
  • see also SMART links
• Doug Oard's Research Software Page - SMART Modifications
• Bow: A Toolkit for Statistical Language Modeling, Text Retrieval, Classification and Clustering
• ifile - A general mail filtering system.
• IR-STAT-PAK - A program to compute descriptive and analytic statistics for the TREC IR trials.
• Yavi - A visual interface to textual information.
• Labeled data sets for information extraction

String/Pattern Matching

• Online Approximate String Matching
• Strmat package (exact string matching and suffix trees)

Sentence Boundary Detector

• SATZ: An Adaptive Sentence Boundary Detector
• Adwait Ratnaparkhi's MXTERMINATOR

Clustering/Classification

• FCLUSTER - A tool for fuzzy cluster analysis
• LNKnet Pattern Classification Software
• Principal Direction Divisive Partitioning
• k-means clustering

WWW

• w3mir - HTTP copying and mirroring tool.
• HTTrack - The Web mirror utility.
• HTML Conversion, Shareware and Freeware

Other Tools

• TextSTAT - Simples Text Analyse Tool
• WebCONC
• German Morphology Browser (online service)
• 'mat2D' Matrix/Vector Library in C
• Content Analysis Resources - for quantitative analyses of texts, transcripts, and images.
• SNoW learning program
• The µ-TBL Homepage - Logic Programming Tools for Transformation-Based Learning
• ROOT: An Object-Oriented Data Analysis Framework
• CAQDAS Networking Project - Computer Assisted Qualitative Data Analysis Software
• Suffix sort
• Nb - a graphical user interface for annotating the discourse structure of spoken dialogue, monologue, and text.
• GATE - General Architecture for Text Engeneering.
• TiMBL: Tilburg Memory Based Learner
• MtRecode - The Multext character translation program
• Evalb - A bracket scoring program. It reports precision, recall, non crossing and tagging accuracy for given data.
• The OC1 decision tree software system
• IND Version 2.0 - creation and manipulation of decision trees from data
• Paai's text utilities
• Shoebox 3.0 for Windows and Macintosh - A database program oriented to the needs of a field linguist's dictionary.
• Teaching materials for statistical NLP by Chris Brew, Language Technology Group, Human Communication Research Centre, University of Edinburgh
• Introducing environmentalism and post-fordism into NLP (NeuroTran)
• Tools for Estonian Language
• Dan Melamed's Page - Simulated Annealing Program, XTAG morpholyzer post-processors for English Stemming, Good-Turing Smoothing Software, 150 miscellaneous text processing tools, 75 text statistics and bitext geometry tools.
• TOOLDIAG: Pattern recognition toolbox
• The DN2 Home Page - DN2 is an intelligent self-relating free format database system which accepts data in human text format, and retrieves it in response to human requests, like Where is London?
• Software Announcements
• Tools for drawing and graphically editing trees
• Paul Nation's vocabulary programs
• syllable prediction code (a simple lisp function)
• Pratt - a pattern discovery tool
• XGobi - A system for multivariate data visualization.
• NODElib - Neural Optimization Development Engine library