Welcome to Knoodl!

Knoodl facilitates community-oriented development of OWL based ontologies and RDF knowledgebases. It also serves as a semantic technology platform, offering a JAVA service-based interface or a SPARQL-based interface so that communities can build their own semantic applications using their ontologies and knowledgebases. Knoodl is a product of Revelytix, Inc. and is hosted in the Amazon EC2 cloud and is available for free. It can also be licensed for private use. For more information, visit the Revelytix web site or contact info@revelytix.com.

Knoodl's capabilities include:

  • Cloud-based application (Amazon EC2)
  • Ontology editing
  • Ontology import/export
  • Collaboration
  • Role-based security
  • Scalable RDF store (Mulgara)
  • NEW Ontology Guided Search NEW
  • NEW SPARQL Endpoints NEW
  • SPARQL query wizard (May '09)
  • User designed widgets and gadgets for viewing data (July '09)
  • User designed widgets and gadgets for entering data and submitting queries (July '09)

How does Knoodl work?

For a brief overview, take a look at our webcast.

All content in Knoodl is organized into Communities. You can browse the list of Communities by clicking on the Community menu at the top of the screen and selecting Directory. Within Communities, there are regular Wikis and there are Vocabularies. A Vocabulary is a combination of an OWL based ontology editor and a wiki. Wikitext in Knoodl is not semantic, it is there to provide users with the ability to collaborate more effectively and add rich documentation. Each Vocabulary represents an ontology. Every resource (class, property, and instance) in the ontology has its own page in the Vocabulary.

In the Knoodl Help Community, you can check out some Examples and see how to get started.

News

Here is our most recent news and events:

March 2009
  • Every Class page now has an Instances tab that enables users to view all the declared Instances of that Class.
  • Every Vocabulary has a 'Find Instances' page that enables users to construct simple SPARQL queries for searching for Instances within the Vocabulary. Read more...

February 2009

August 2008
  • New user interface for the creation and editing of instances which enables Communities to turn their Vocabularies into true knowledgebases. Read more...
  • Wikis and Vocabularies can now be imported/exported asynchronously as archive files which contain all wikitext and history files. Read more...

April 2008
  • The Community Directory now sorts Communities alphabetically for easier browsing.
  • Added ability to collapse the technical specification sections within a Vocabulary, controllable by the community administrator based on two new permissions levels (non-technical Reviewer and non-technical Guest).
  • Added full support for owl:imports statements within Vocabularies. Read more...

February 2008
  • Enhanced the {{ask}} function with configurable headers and new layout options. For more information, see ask function help page.
  • Added the vocabulary tree view which allows users to see the Classes and Properties of a Vocabulary using a hierarchy tree view on the left hand side of the screen. Read more...

December 2007
  • Changed the overall layout so that the menu bar is at the top.
  • Added template-driven forms for entering wikitext.

August 2007
  • New RSS feeds let you track changes to communities, wikis, and vocabularies. Read more...

July 2007
  • Vocabularies are made visible with a beta version of our new intelligent graphics. Read more...

March 2007
  • The new search facility of Knoodl finds pages within communities, wikis, vocabularies, or anywhere in the site. Read more...

January 2007
  • An update of Knoodl is available, with several new features -- including permissions. Read more...

December 2006
  • The launch of Knoodl Beta was celebrated with a webcast describing the site and demonstrating the site's powerful collaborative vocabulary management features.

November 2006
  • Knoodl Beta goes live. Thanks to all those people that made it possible, especially our early users!