Collection of lightweight PHP scripts for RDF developers.

A modern Java based RDF/XML parser compliant with latest XML and RDF updates including validation of many syntax aspects.

Allows for reading RSS/RDF/Atom-Feeds any Java-enabled mobile phone.

A pure perl RDF system providing storage and RDF/XML parsing.

A visualization tool for RDF Schema ontologies.

A suite of high-level, scalable tools for the Semantic Web. Comprises of VRP, the Validating RDF Parser, RSSDB, the RDF Schema Specific DB and an Interpreter for RQL, the RDF Query Language

A Java system for RDF providing support for manipulating RDF models, parsing RDF/XML and N3, persistent storage with Sleepycat DB and many SQL backends, querying using RDQL and inference support.

A comprehensive Java RDF and Semantic Web toolkit with parsing, persistent storage, inferencing and querying.

This tool uses ASRDF, a terse notation based on the outliner scheme, to convert RDF statements in full RDF-XML syntax with support for data typing and i18n.

Parser, storage, and query language for RDF.

A C library of parsers for RDF handling the latest RDF/XML syntax changes using expat or libxml XML parsers.

A pure PHP library for parsing, manipulating and serializing RDF.

A semantic query service for distributed data. The gateway gives applications the ability to perform powerful deductive queries across multiple sources of structured data. Applications interface with the gateway through a simple, SQL-style language (RDFQL) that supports the model and syntax of RDF.

An implementation of a full RDF system including parsing of XML syntax, storage, model, query language and a server interface.

A pure perl RDF API providing storage, querying and manipulation of RDF models and parsing of RDF/XML.

Redfoot is a framework for building distributed, data-driven web applications with RDF and Python. It includes a database, parser, serializer, query API, template language for web-sites, modular architecture and some peer-to-peer support.

A C library that provides an implementation of the RDF model, allowing it to be manipulated, queried and stored via APIS in Perl, Python, Tcl and Java.

A Free RSS/RDF to JavaScript conversion tool which adds any RSS/RDF feed to a web page, blog or any valid HTML page.

Information on this application stack for building RDF-based applications. Also has details on Rhizome which is a Semantic Web-enabled, Wiki-like content management system.

An RDF Schema-based Repository and Querying facility. Supports expressive querying of RDF data and schema information using an OQL-style query language called RQL. The site has demos of the storage facility and the query engine.

A perl system implementing the RDF API using it for describing the data, interface and code.

A toolkit for RDF and DAML written in Common Lisp providing model manipulation and parsing of RDF/XML.