PUBLIC MARKS with tags semantic & floss

WagN is a deep merger of wiki and tagging—not just a wiki with tagging, but wiki and tags all mashed up together. WagN can do everything a regular wiki can do- but it can also handle data in a way that regular wikis can’t. * WagN is made of cards A card is a chunk of information. * Cards can be connected Whenever two cards are related, you can “connect” them, creating a new card to explain the relationship. * Cards are named with tags A tag is basically just a word or phrase. Every tag has a card that explains it, and every card has a title comprised of one or more tags. A simple card's title is a single tag, while a connection card has a title built from multiple tags.

Jena is a Java framework for building Semantic Web applications. It provides a programmatic environment for RDF, RDFS and OWL, SPARQL and includes a rule-based inference engine. Jena is open source and grown out of work with the HP Labs Semantic Web Programme. The Jena Framework includes: * A RDF API * Reading and writing RDF in RDF/XML, N3 and N-Triples * An OWL API * In-memory and persistent storage * SPARQL query engine

SemWebCentral is an Open Source development web site for the Semantic Web. One purpose of SemWebCentral is to support the Semantic Web community by providing a free, centralized place for Open Source developers to manage Semantic Web software and content development. The other purpose is to provide resources for developers or other interested parties to learn about the Semantic Web and how to begin developing Semantic Web content and software.

A company developping OOS for professional search, semantic middleware, and developer products

Aperture is a Java framework for extracting and querying full-text content and metadata from various information systems (e.g. file systems, web sites, mail boxes) and the file formats (e.g. documents, images) occurring in these systems.