Roget's Thesaurus - As distributed by Project Gutenberg [ http://asadz.com/thesaurus/ ]
E-text of Roget's Thesaurus No. Two, which is derived from the version of Roget's Thesaurus published in 1911. - [ Read more ]

Lexical Freenet [ http://www.lexfn.com/ ]
Search for relationships between words and concepts that might never have occurred to you before. - [ Read more ]

Sybrina's Phrase Thesaurus [ http://www.sybrina.com ]
A creative phrase tool for creative writers of any genre including college students, people just learning English, people wanting to improve their communication skills, artistic professionals and others. - [ Read more ]

Roget's International Thesaurus of English Words and Phrases [ http://www.bartleby.com/110/ ]
Online publication of this popular thesaurus made available by Bartleby.com. - [ Read more ]

Yahoo! Roget's II Thesaurus [ http://education.yahoo.com/reference/thesaurus ]
Contains over 260,000 synonyms and cross-references. Features succinct word definitions and hyperlinked category index. - [ Read more ]

Large-Scale Controlled Vocabulary Indexing for Named Entities [ http://acl.ldc.upenn.edu/A/A00/A00-1038.pdf ]
Paper discussing the implementation of a named entity thesaurus by Lexis-Nexis. [PDF Format] - [ Read more ]

Thesaurus Principles and Practice [ http://www.willpower.demon.co.uk/thesprin.htm ]
Discusses the basics of thesaurus construction and management. From Willpower Information Management Consultants. - [ Read more ]

Zthes: a Z39.50 Profile for Thesaurus Navigation [ http://zthes.z3950.org/ ]
Describes an abstract model for representing and searching thesauri, specifying how the model may be implemented. Uses of Z39.50 protocol and XML DTD for thesauri are described. - [ Read more ]

Wordsmyth Educational Dictionary-Thesaurus [ http://www.wordsmyth.net/ ]
Integrated english dictionary and thesaurus. - [ Read more ]

Getty Thesaurus of Geographic Names [ http://www.getty.edu/research/conducting_research/vocabularies/tgn/ ]
Structured vocabulary of place names. - [ Read more ]

Thesaurus of Musical Instruments [ http://alteriseculo.com/instruments/ ]
Over a thousand instruments, with relational links based on the Library of Congress Subject Headings. - [ Read more ]

Inter Active Terminology for Europe (IATE) [ http://iate.europa.eu/iatediff/ ]
European Union terminology. Available on most European Union languages. - [ Read more ]

Online Thesaurus [ http://reference.aol.com/thesaurus ]
Find synonyms using this free online thesaurus from AOL's Research and Learn channel. - [ Read more ]

INGRID Library Thesaurus [ http://ingrid.utlib.ee/thesaurus.html ]
Allows direct term search with results hyperlinked to broader and narrower search terms. Available in English and Estonian. - [ Read more ]

The Astronomy Thesaurus [ http://www.mso.anu.edu.au/library/thesaurus/ ]
Astronomical terms. Searches may be performed in English, French, German, Italian, and Spanish. - [ Read more ]

Thinkmap Visual Thesaurus [ http://www.visualthesaurus.com/ ]
Interactive dictionary and thesaurus using a visual display for data navigation. - [ Read more ]

American Society of Indexers - Thesauri Online [ http://www.asindexing.org/site/thesonet.shtml ]
Annotated directory. - [ Read more ]

Maths Thesaurus [ http://thesaurus.maths.org/ ]
Definitions of common mathematical terms, along with broader, narrower, and related concepts. - [ Read more ]

HASSET [ http://www.data-archive.ac.uk/search/hassetSearch.asp ]
Provides direct term search followed by hierarchical and other types of browsing. Based on a UNESCO thesaurus. - [ Read more ]

Germ [ http://www.germ.cz/ ]
Searchable WordNet and Roget's Thesaurus with meaning trees. - [ Read more ]