Links to Tools for Working with SKOS ...

The keyphrase extraction algorithm KEA has now a version for indexing documents with terms from any thesaurus or vocabulary in SKOS format. Given a document and a SKOS vocabulary, Kea selects a list of phrases from this vocabulary describing the document's main topics. See examples of Kea's performance on agricultural documents with the Agrovoc thesaurus and on medical documents with MeSH terms. Kea is being developed at the Waikato University in New Zealand and is a free software.
Danbri wrote a PHP script for exporting Wordpress categories as SKOS in RDF/N3; this has now been improved and folded into Morten's FOAF/SKOS plugin for WordPress
Al's SKOS Validator (see SkosValidator for releases) - a Java application that also does RDF syntax checking and RDf schema validation.
Nikki Rogers' and Dave Beckett's demo SKOS Web Service client in Python, SKOS Web Service in Java.
Tematres Currently in spanish, being localised and worked on, a GPL thesaurus authoring tool that does SKOS as an output format
Glamorgan work on working with SKOS using XPATH and XSL
Net Flickr Backup makes an archive of your Flickr account with all comments, tags, annotations in RDF and using SKOS for concepts
OpenLink Data Spaces - uses SKOS for tags/categories in it Weblog, Wiki, Shared Bookmarks, Discussion, Image Gallery, Feed Subscriptions Data Spaces. See SKOS and ODS Sample SPARQL Queries page for some live examples.
ThManager - "ThManager is an Open Source Tool for creating and visualizing SKOS RDF vocabularies, a W3C initiative for the representation of knowledge organization systems such as thesauri, classification schemes, subject heading lists, taxonomies, and other types of controlled vocabulary."
SKOS2GenTax is an online tool that converts hierarchical classifications available in the W3C SKOS (Simple Knowledge Organization Systems) format into RDF-S or OWL ontologies. In many cases, the resulting ontologies can be used directly. If not, they can be refined using standard ontology engineering tools like e.g. Protégé.
AnnoCultor, a RDF mapping tool which can used to create SKOS representation of existing vocabularies, used in the eCulture project
SKOS Editor Protégé plugin (for Protégé 4, alpha)
PoolParty is a Triple-Store based Thesaurus Management Environment which uses SKOS and Text Extraction for Tag Recommendation

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SKOS Author