CHAPTER 3: Morphology and Finite-State Transducers

• PC-KIMMO, the two-level morphological parser.
• A public domain FSA/FST toolbox implemented in SICStus Prolog . Includes a binary version for Sparc/Solaris, for those Solaris users without Prolog.
• XEROX XRCE (Xerox Research Centre Europe)'s Xerox Finite-State Compiler. Not available for free, but you can try out your own examples on the web site.
• Computational Phonology and Morphology SIL site

CHAPTER 4: Computational Phonology and text-to-speech

• The Festival Speech Synthesis System.
• Peter Ladefoged's Course in Phonetics, Very useful materials including sets of International Phonetic Alphabet (IPA) charts together with sounds.
• CMU pronunciation dictionary
• The International Phonetic Association Has fonts, printable charts of the International Phonetic Alphabet, etc.
• The TOBI labelling guideline and general introduction.

CHAPTER 5: Probabilistic Models of Pronunciation and Spelling

• The ISIP Decision Tree Package

CHAPTER 6: N-grams

• The SRI Language Modeling toolkit
• The CMU-Cambridge Statistical Language Modeling toolkit
• FTP site for Geoffrey Sampson's C code for a Simple Good-Turing Frequency Estimator"

CHAPTER 7: HMMs and Speech Recognition

• The CSLU Speech Toolkit. Free, but you have to register first. A comprehensive suite of speech recognition, synthesis, and dialog tools.
• The Mississippi State ISIP public domain speech recognizer Also includes a discrete HMM toolkit, a decision tree package, etc.

CHAPTER 8: Word Classes and Part-of-Speech Tagging

• Brill's supervised and unsupervised Transformation-Based Learning (TBL) tagger; this is C code from 1996. Here's the ftp site.
• Xerox PARC's HMM tagger (Common LISP Code from 1994) ftp.
• Adwait Ratnaparkhi's MXPOST (Maximum Entropy POS Tagger)

CHAPTERS 10 and 12: Parsing and Probabilistic Parsing

• Penn XTAG project Large tree-adjoining grammar, grammar tree-viewer, parser, and SuperTagger. (C/Common LISP/Tck/Tk)
• CMU Link Grammar Parser
• NYU "Apple Pie" Parser (bottom-up probabilistic non-lexicalized chart parser and grammar from the Penn Treebank)
• Conexor Dependency and Phrase structure parser (You have to pay for the software, but can use the form on the web version just to try out some examples.)
• A bracket scoring program, by Satoshi Sekine and Michael Collins. It reports precision, recall, non crossing and tagging accuracy.

CHAPTER 11: Features and Unification

• ALE (Attribute Logic Engine). This is a freeware system (written in Prolog) which integrates phrase structure parsing and constraint logic programming with typed feature structures as terms.

CHAPTER 16: Lexical Semantics

• WordNet, the WordNet FTP site, and the European mirror site at the University of Stuttgart

CHAPTER 17: Word Sense Disambiguation and Information Retrieval

• The SENSEVAL effort to evaluate WSD systems.
• Glasgow's collection of publically available IR test collections.
• The Reuters-21578 text categorization test collection courtesy of David Lewis.
• A set of pointers to IR resources from ACM SIGIR
• The foundational SMART information retrieval system from Cornell.
• The MG text indexing and retrieval system from the Managing Gigabytes text.
• A set of papers and demos describing Latent Semantic Indexing

CHAPTER 20: Generation

• Pointers to natural language generation resources can be found on the ACL SIGGEN site.

CHAPTER 21: Machine Translation

• The  European Association for MT site contains a wealth of MT information.
• The EGYPT Statistical Machine Translation Toolkit

OTHER STUFF

• Adwait Ratnaparkhi's MXTERMINATOR (Sentence Boundary Detector)
• Andrew McCallum's C library "Bow: A Toolkit for Statistical Language Modeling, Text Retrieval, Classification and Clustering"

Important Lists/Sources of Software, Corpora, and Other SLP Resources

• The Natural Language Software Registry
• Chris Manning's list of resources for statistical natural language processing and corpus-based computational linguistics
• Linguistic Data Consortium (LDC)
• The ACL NLP/CL Universe Index of Computational Linguistics and Natural Language Processing resources, including a search engine
• The Center for Lexical Research
• Summer Institute of Linguistics (SIL): Linguistic Resources on the Internet
• The ELSNET Resources Page
• TELRI Research Archive of Computational Tools and Resources
• Bavarian Archive for Speech Signals
• ELRA/ELDA