# Jena contributions page

This page lists various contributions to Jena - classes, packages, libraries, applications, or ontologies that enhance Jena or are built on top of it.

> Mere appearance in this list is not an endorsement of the contribution by the Jena team, or by Hewlett-Packard.

# advice to contributors

If you wish your contribution to appear on this page, email jena-devel with the details. See the guidelines for contributors for details of the format of this message and advice on the content of a contribution.

Remember Jena support, including this page, is voluntary and done at our convenience.

# contributions

name | description | licence | creator | for download see
--- | --- | --- | --- | ---
OWL Tidy | report causes of syntactic non-conformance in OWL | as per Jena | Jeremy Carroll | jena files page
GLEEN | A path expression (a.k.a. "regular paths") property function library for ARQ SparQL | Apache 2.0 | Todd Detwiler - University of Washington Structural Informatics Group | GLEEN home
Jena Sesame Model | Jena Sesame Model - Sesame triple store for Jena models | GNU | Weijian Fang | Jena Sesame Model
D2RQ | Treats non-RDF databases as virtual Jena RDF graphs | GNU GPL License | Chris Bizer | D2RQ website
GeoSpatialWeb | This projects adds geo-spatial predicates and reasoning features to Jena property functions. | GNU GPL License | Marco Neumann and Taylor Cowan | GeoSpatialWeb
Jena Derby Driver | Jena driver for the Apache Derby Database | as per Jena | Vineet Sinha | driver website
Eyeball | RDF lint - look for common problems in RDF data | as per Jena | Chris Dollin | Eyeball index
Jastor | Code generator that emits Java Beans from OWL Web Ontologies | Common Public License | Ben Szekely and Joe Betz | Jastor website
NG4J | Named Graphs API for Jena | BSD license | Chris Bizer | NG4J website
Micro Jena (uJena) | Reduced version of Jena for mobile devices | as per Jena | Fulvio Crivellaro and Gabriele Genovese and Giorgio Orsi | Micro Jena
Gloze | XML to RDF, RDF to XML, XSD to OWL mapping tool | as per Jena | Steve Battle | jena files page
WYMIWYG KnoBot | A fully Jena based semantic CMS. Implements URIQA. File-based persistence. | Apache | Reto Bachmann-Gmuer / wymiwyg.org | Download KnoBot
Twinkle | A GUI interface for working with SPARQL queries | Public Domain | Leigh Dodds | Twinkle project homepage