Posted to the SIGIA-L listserv on October 1, 2000 by Peter Morville, Argus Associates

Last week I posted to this list asking if anyone knew of Fortune 500 companies that had integrated some level of thesaurus capabilities (e.g., synonym rings, controlled vocabularies, hierarchical and associative term relationships) into their public web sites. Thanks for all the responses. They're included below. Unfortunately, none are Fortune 500. Good examples are either well hidden or non-existent.

http://www.bitpipe.com
 Search on "ecommerce", scroll down and click on "electronic commerce" in one of the "subjects:" fields. The "Related Topics" section of the page is a thesaural browser. - Peter

http://www.statcan.ca/english/search/ips.htm
 Click on 'Thesaurus' to explore this tool. You have to cut and paste the term so the link to the search function is less than seamless. However, it's an invaluable aid in trying to identify just what Statistics Canada is calling this 'thing' you are looking for. - Helen

http://clerk.ci.seattle.wa.us/~public/newtoc.htm
We're not Fortune 500, but the Seattle City Clerk's Office has a thesaurus integrated into the searching functions of our on-line database systems for retrieval of certain types of documents. The legislative databases and the Archives photo database, among others, implement this function. How it functions is not explicit on the site, but currently it's set up to substitute authorized terms for synonyms, uf terms, and abbreviations. At the cost of adding potential complexity for users we could enable inclusive searching of narrower terms, query expansion including related terms  - Ernie

http://www.fit.qut.edu.au/InfoSys/middle/cont_voc.html
 (a site about controlled vocabularies) If you check under Thesaurus sites, you'll find a lot of online thesauri, though most of them are stand alone and you have to get into the associated subscription databases to be able to see any integration. However, ERIC and Hasset are linked to some extent. - Michael

http://lcweb.loc.gov/rr/print/tgm2/ 
http://shiva.pub.getty.edu/aat_browser/ 
http://www.dtic.mil/dtic/wed.html (must register to access)
Again, these aren't corporate/Fortune 500, but interesting none the less if by chance you are not familiar with these. I'd be interested to hear of any Fortune 500's you did find. - Antoinette

http://www.m-w.com/  (includes traditional thesaurus)
Merriam Webster dictionary online offers help when searching. - John

http://www.meansbusiness.com  (I couldn't find evidence of thesaurus integration here...)
Take a look at the navigation at MeansBusiness for a concept level scheme. - Denham

http://www.in-map.net/counties/HAMILTON/  (I couldn't find evidence of controlled vocabularies...) 
It does has a controlled vocabulary with cross-subject use. (i.e. Libraries are under Community, Education and Leisure) - Matthew