Natural Language Processing Tools

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Freeware Tools	ALE (Attribute Logic Engine) Description: ALE is a environment that integrates phrase structure parsing and constraint logic programming with typed feature structures. It can handle several formalisms including HPSG, PATR-II, DCG grammars, and Prolog, Prolog-II, and LOGIN programs. Sample grammars are provided with the distribution. Platforms: Platforms with SICStus Prolog, or Quintus Prolog. Source: The latest version is available from the CMU Artificial Intelligence Repository. Reference: Additional information is available from the CMU Artificial Intelligence Repository. Contact: carp@lcl.cmu.edu. CGPARSER Description: CGParser is a linear parser of Conceptual Graphs. It was written using the YACC compiler generator utility. The distribution includes examples of various levels of complexity for testing purposes. Platforms: UNIX. Source: The latest version is available from the Consortium for Lexical Research. Reference: Additional information is available from the Consortium for Lexical Research. Contact: hdp@nmsu.edu. CHARON Description: CHARON is an environment for the development and testing of LFG grammars. It integrates parsers, semantic components and the generator, and provides a user-interface for the compilation and the testing of LFG grammars. Platforms: UNIX. Source: The latest version is available from ftp.ims.uni-stuttgart.de. Reference: Additional information is available from ftp.ims.uni-stuttgart.de. Conc Description: Conc is used for producing concordances of texts. It also produces a frequency index for each word in the text. It displays the original text, the concordance, and the index each in synchronized windows. Platforms: Mac. Source: The latest version is available from the Consortium for Lexical Research. Reference: Additional information is available from the Consortium for Lexical Research. Contact: antworth@am.dallas.sil.org. ELIZA Description: This is the classic NLP program by Weizenbaum. It allows for a simple first assignment in NLP. Students are asked to develop a new knowledge base for some domain other that the classic psychoanalyst-patient one. Platforms: PC, Mac, VAX, UNIX and others. Source: The latest version is available from the CMU Artificial Intelligence Repository. Reference: N/A. Contact: N/A. ENGLEX Description: Englex is a lexicon for morphological analysis of English text. It is intended for use with PC-KIMMO (or programs that use the PC-KIMMO parser, such as KTEXT). Combined with software, it facilitates production of sets of records of the morphological constituents in English texts. Platforms: PC, Mac, and UNIX. Source: The latest version is available from the Consortium for Lexical Research. Reference: Additional information is available from the Consortium for Lexical Research. Contact: evan@txsil.lonestar.org. FLEX (Fast Lexical Analyzer Generator) Description: FLEX is a generator of lexical pattern recognizers. It is an extension to the UNIX LEX lexical analyzer utility. Platforms: UNIX. Source: The latest version is available from the ftp.ee.lbl.gov. Reference: Additional information is available from the Consortium for Lexical Research. Contact: vern@ee.lbl.gov. FONOL Description: Fonol is a programming language for experimenting with Transformation-Grammar-style phonological rules. It also incorporates input and output filters/conditions. It is intended for both phonology students and researchers in that it facilitates understanding of phonological rule fundamentals and helps manage large complex bodies of phonological rules. Platforms: PC (and platforms with Turbo Pascal). Source: The latest version is available from the Consortium for Lexical Research. Reference: Additional information is available from the Consortium for Lexical Research. Contact: brandon@gamma.is.tcu.edu. Grammar Workbench Description: The Grammar Workbench is an environment for the development and analysis of grammars. It is geared towards the AGFL (Affix Grammars over a Finite Lattice) formalism. Platforms: PC, and Sun. Source: The latest version is available from hades.cs.kun.nl. Reference: Additional information is available from hades.cs.kun.nl. Contact: agfl@cs.kun.nl. KGEN Description: KGEN is a program for building morphological parsers for NLP systems. It is an auxiliary program for PC-KIMMO. Platforms: PC. Source: The latest version is available from the Consortium for Lexical Research. Reference: Additional information is available from the Consortium for Lexical Research. Contact: evan@txsil.lonestar.org. LINK Description: LINK is a parser for Link Grammar, a context-free formalism for the description of natural language. It also includes a Link Grammar for English. Platforms: UNIX. Source: The latest version is available from the Consortium for Lexical Research. Reference: Additional information is available from the Consortium for Lexical Research. Contact: sleator@cs.cmu.edu. Lotec Description: The Lotec Speech Recognition Package is a simple set of libraries and tools for building single-speaker, small-vocabulary, low-quality continuous speech recognition applications. Platforms: Sun. Source: The latest version is available from the ftp.sanpo.t.u-tokyo.ac.jp. Reference: Additional information is available from The Natural Language Software Registry. Contact: nigel@sanpo.t.u-tokyo.ac.jp. LT Thistle Description: LT Thistle is a parameterizable display engine and editor for diagrams, allowing the inclusion of interactive diagrams within Web pages. Originally designed for use with linguistic diagrams, we envisage widespread application within other areas involving the presentation and interpretation of highly structured information. It is available free of charge for non-commercial purposes. Platforms: Java Source: http://www.ltg.ed.ac.uk/software/thistle/demos/index.html Reference: http://www.ltg.ed.ac.uk/software/thistle/index.html Contact: Jo Calder J.Calder@ed.ac.uk OGI Speech Tools Description: The OGI Speech Tools are a set of speech data manipulation tools including an X Windows display tool (Lyre) for displaying data in a time synchronous fashion, a Neural Network training package, a set of C library routines (LIBNSPEECH) for speech data manipulation, a set of sound-file format conversion utilities, and a set of Pearl scripts for automating the use of the above tools. Platforms: UNIX. Source: N/A. Reference: N/A. Contact: tools@cse.ogi.edu. PC-KIMMO Description: PC-KIMMO is a popular program among computational linguists, descriptive linguists, and NLP system developers. It generates and/or recognizes words using a two-level model of word structure, i.e., a lexical-level form, and a surface-level form. Platforms: PC, Mac, UNIX. Source: The latest version is available from the Consortium for Lexical Research. Reference: Additional information is available from the Consortium for Lexical Research, and PC-KIMMO: A Two-Level Processor for Morphological Analysis by Evan L. Antworth, published by the Summer Institute of Linguistics (1990). Contact: evan@txsil.lonestar.org. SAX (Sequential Analyzer for syntaX and semantics) Description: SAX is a syntactic analyzer for Definite Clause Grammar. It employs a bottom-up and breadth-first parsing algorithm. Distribution includes a Japanese grammar and some sample Japanese data. Platforms: Platforms with SICStus Prolog. Source: The latest version is available from the Consortium for Lexical Research. Reference: Additional information is available from the Consortium for Lexical Research. Contact: N/A. SYNTACTICA Description: SYNTACTICA is a system for grammar development with a simple graphical user interface. It is intended for use in introductory syntax classes, or introductory linguistics classes with a syntax component. Platforms: NextStep. Source: The latest version is available from the Consortium for Lexical Research. Reference: Additional information is available from the Consortium for Lexical Research. Contact: rlarson@semlab1.sbs.sunysb.edu.
Commercial Tools	Alvey Natural Language Tools (ANLT) Description: The Alvey Natural Language Tools is a set of tools for use in natural language processing research. These include a morphological analyzer, parsers, a grammar and a lexicon. They can be used independently or with a grammar development environment to form a complete system for the morphological, syntactic and semantic analysis of a considerable subset of English. Platforms: UNIX. Source: N/A. Reference: Additional information is available from ftp.cl.cam.ac.uk. Contact: N/A. ALEP Description: The Advanced Language Engineering Platform (ALEP) is a versatile and flexible general purpose NLP platform. It is independent of formalism, incorporates a number of standards such as SGML, ISO character sets, and MOTIF and comes with a graphical user interface, an extensive on-line documentation, and various tools for text handling, linguistic processing, and debugging. Platforms: Platforms supporting Prolog by BIM 4.0.5, ClauseDB 2.0, GNU Emacs 19.19, OSF/MOTIF 1.2. Source: Available on tape through contact below. Reference: Additional information is available from The Natural Language Software Registry. Contact: Mr. N. K. Simpkins, Cray Systems, ALEP Support, 11b Bvd Joseph II, LUXEMBOURG, L-1840 LUXEMBOURG. CSRE -- Canadian Speech Research Environment Description: CSRE is designed to support speech research by providing a powerful, low-cost facility using mass-produced and widely-available hardware. Functions include speech capture, editing, and replay, spectral analysis procedures, 3D displays, parameter extraction/tracking and tools to automate measurement and support data logging. CSRE components include a speech editor, a time-domain analyzer, a spectral analyzer, a formant tracker, a pitch tracker, a speech synthesizer, an acoustic signal synthesizer, and an experiment generator/controller. Platforms: PC. Source: N/A. Reference: Additional information is available from The Natural Language Software Registry. Contact: Donald G. Jamieson, , University of Western Ontario, Hearing Health Care Research Unit, Communicative Disorders, London, Ontario N6G1H1, Canada. ESPS - Entropic Signal Processing System Description: ESPS is a set of signal and speech processing utilities. Their functionality includes spectrum analysis, time series manipulation, pattern classification, file manipulation, plotting, speech processing, data I/O and conversion, filter design, and filtering. Platforms: SUN, SGI, HP 9000/700, or DEC 3100/5000 and ALPHA computer running UNIX. Source: N/A. Reference: Additional information is available from The Natural Language Software Registry. Contact: Ken Nelson, Director of Sales and Marketing, Entropic Research Laboratory, 600 Penn. Ave. S.E., Suite 202, Washington, D.C., USA 20003. Natural Language (TM) Description: Natural Language (TM) is an extensible natural language interface to relational SQL databases. It employs a parser, semantic interface, natural language generator, and a deductive system that interprets English questions in the context of the specific applications. Its extension mechanism, Intelligent Connector (ICon), may be used to customize Natural Language to specific applications. Platforms: MS-Windows, VMS, and UNIX. Source: N/A. Reference: Additional information is available from The Natural Language Software Registry. Contact: Cilla DeVries, Natural Language Inc., Marketing Department, 1125 Atlantic Avenue, Alameda, CA 94501, U.S.A. NL Builder (TM) Description: NL Builder (TM) may be used to develop NLP applications or experiment with various linguistic components. It consists of a tokenizer, a dictionary, a morphological analyzer, a parser, a semantic interpreter, a semantic network KRL, lexical acquisition tools, "C" hooks, and a debugger. Platforms: PC, Mac, Apollo, Sun, VAX, NeXT, and others. Source: N/A. Reference: Additional information is available from The Natural Language Software Registry. Contact: Edwin R. Addison, Synchronetics, Inc., Synchronetics, Inc., 301 N. Front St., Baltimore, MD 21202, U.S.A. VisualText (R) Description: VisualText is an integrated development environment (IDE) for NLP. It constructs multipass text analyzers that combine pattern-based, grammar-based, and additional paradigms. Features a rapid prototyping GUI, the NLP++ (R) programming language (interpreted/compiled), and the Conceptual Grammar (TM) hierarchical knowledge base management system (KBMS). Open architecture integrated with C++; ODBC database connectivity. Applications include information extraction, natural language generation (NLG), categorization, summarization. Comes with the TAIParse general analyzer and others. Platforms: VisualText runs on Windows PC; analyzers run on Windows PC and Linux. Source: N/A. Reference: http://www.textanalysis.com. Contact: Maureen McHenry, 877-235-6259 USA toll free, maureen.mchenry@textanalysis.com, Text Analysis International, Inc.
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