W3C home > Mailing lists > Public > public-lod@w3.org > October 2010

Re: SPARQL servers used in the LOD Cloud

From: Kingsley Idehen <kidehen@openlinksw.com>
Date: Fri, 01 Oct 2010 09:52:58 -0400
Message-ID: <4CA5E7BA.20005@openlinksw.com>
To: Richard Cyganiak <richard@cyganiak.de>
CC: public-lod@w3.org
  On 10/1/10 8:08 AM, Richard Cyganiak wrote:
> Yesterday I pulled a list of all SPARQL endpoints in the LOD Cloud 
> diagram from the CKAN API. There are 141. After removing 24 that were 
> offline, timed out or otherwise inaccessible, I had a list of 117 that 
> produced valid responses to a simple SPARQL query.
>
> I then categorized them according to the server software used (by 
> looking at the “Server” HTTP header, or various other telltale signs 
> in the responses, or in a few cases at the site documentation). 
> Results are below.
>
> The real news here is that we now have more than 100 live SPARQL 
> endpoints in the Cloud. I'm not going to attempt any further 
> interpretation of this data, but it should be useful for anyone who 
> needs SPARQL endpoints for testing their client against.
>
> If you are aware of any SPARQL endpoints that are missing here, please 
> consider adding it to the relevant package in CKAN (or creating a new 
> package if necessary). As a fall-back, email me ;-)
>
> Best,
> Richard
>
>
>
> Virtuoso
>
> http://affymetrix.bio2rdf.org/sparql
> http://chebi.bio2rdf.org/sparql
> http://geneid.bio2rdf.org/sparql
> http://go.bio2rdf.org/sparql
> http://hgnc.bio2rdf.org/sparql
> http://homologene.bio2rdf.org/sparql
> http://cpd.bio2rdf.org/sparql
> http://dr.bio2rdf.org/sparql
> http://ec.bio2rdf.org/sparql
> http://gl.bio2rdf.org/sparql
> http://kegg.bio2rdf.org/sparql
> http://rn.bio2rdf.org/sparql
> http://mgi.bio2rdf.org/sparql
> http://obo.bio2rdf.org/sparql
> http://omim.bio2rdf.org/sparql
> http://pdb.bio2rdf.org/sparql
> http://pubmed.bio2rdf.org/sparql
> http://reactome.bio2rdf.org/sparql
> http://sgd.bio2rdf.org/sparql
> http://uniprot.bio2rdf.org/sparql
> http://unists.bio2rdf.org/sparql
> http://services.data.gov/sparql
> http://dbpedia.org/sparql
> http://lsd.taxonconcept.org/sparql
> http://rdf.farmbio.uu.se/chembl/sparql/
> http://geo.linkeddata.es/sparql
> http://lsd.taxonconcept.org/sparql
> http://sonicbanana.cs.wright.edu:8890/sparql
> http://linkedgeodata.org/sparql/
> http://sw.unime.it:8890/sparql
> http://en.openei.org/sparql
> http://lsd.taxonconcept.org/sparql
> http://harp.cs.wright.edu:8890/sparql
> http://data.bib.uni-mannheim.de/sparql
> http://linkeddata.uriburner.com/sparql
>
>
> 4store
>
> http://acm.rkbexplorer.com/sparql/
> http://budapest.rkbexplorer.com/sparql/
> http://citeseer.rkbexplorer.com/sparql/
> http://cordis.rkbexplorer.com/sparql/
> http://courseware.rkbexplorer.com/sparql/
> http://curriculum.rkbexplorer.com/sparql/
> http://darmstadt.rkbexplorer.com/sparql/
> http://dblp.rkbexplorer.com/sparql/
> http://deepblue.rkbexplorer.com/sparql/
> http://deploy.rkbexplorer.com/sparql/
> http://dotac.rkbexplorer.com/sparql/
> http://eprints.rkbexplorer.com/sparql/
> http://era.rkbexplorer.com/sparql/
> http://eurecom.rkbexplorer.com/sparql/
> http://ft.rkbexplorer.com/sparql/
> http://ibm.rkbexplorer.com/sparql/
> http://ieee.rkbexplorer.com/sparql/
> http://irit.rkbexplorer.com/sparql/
> http://jisc.rkbexplorer.com/sparql/
> http://kisti.rkbexplorer.com/sparql/
> http://laas.rkbexplorer.com/sparql/
> http://newcastle.rkbexplorer.com/sparql/
> http://nsf.rkbexplorer.com/sparql/
> http://oai.rkbexplorer.com/sparql/
> http://os.rkbexplorer.com/sparql/
> http://pisa.rkbexplorer.com/sparql/
> http://rae2001.rkbexplorer.com/sparql/
> http://resex.rkbexplorer.com/sparql/
> http://risks.rkbexplorer.com/sparql/
> http://roma.rkbexplorer.com/sparql/
> http://southampton.rkbexplorer.com/sparql/
> http://ulm.rkbexplorer.com/sparql/
> http://unlocode.rkbexplorer.com/sparql/
> http://wiki.rkbexplorer.com/sparql/
> http://wordnet.rkbexplorer.com/sparql/
> http://dbtune.org/classical/sparql/
> http://eculture2.cs.vu.nl:5020/sparql/
>
>
> Talis Platform
>
> http://api.talis.com/stores/airports/services/sparql
> http://api.talis.com/stores/bbc-backstage/services/sparql
> http://api.talis.com/stores/bbc-backstage/services/sparql
> http://api.talis.com/stores/bbc-wildlife/services/sparql
> http://api.talis.com/stores/datagovuk/services/sparql
> http://api.talis.com/stores/discogs
> http://api.talis.com/stores/fanhubz/services/sparql
> http://api.talis.com/stores/jgoodwin-genealogy/services/sparql
> http://api.talis.com/stores/kwijibo-dev2/services/sparql
> http://api.talis.com/stores/kwijibo-dev5/services/sparql
> http://api.talis.com/stores/moseley/services/sparql
> http://api.talis.com/stores/musicbrainz/services/sparql
> http://api.talis.com/stores/openlibrary/services/sparql
> http://api.talis.com/stores/pokedex/services/sparql
> http://api.talis.com/stores/productdb/services/sparql
> http://api.talis.com/stores/space/services/sparql
> http://api.talis.com/stores/theviewfrom/services/sparql
> http://services.data.gov.uk/business/sparql
> http://services.data.gov.uk/education/sparql
> http://services.data.gov.uk/patents/sparql
> http://services.data.gov.uk/reference/sparql
> http://services.data.gov.uk/research/sparql
> http://services.data.gov.uk/statistics/sparql
> http://services.data.gov.uk/transport/sparql
>
>
> D2R Server
>
> http://data.bibbase.org:2020/sparql
> http://data.linkedct.org/sparql
> http://data.linkedmdb.org/sparql
> http://dblp.l3s.de/d2r/sparql
> http://dbtune.org/musicbrainz/sparql
> http://www4.wiwiss.fu-berlin.de/dblp/sparql
> http://www4.wiwiss.fu-berlin.de/diseasome/sparql
> http://www4.wiwiss.fu-berlin.de/drugbank/sparql
> http://www4.wiwiss.fu-berlin.de/eurostat/sparql
> http://www4.wiwiss.fu-berlin.de/factbook/sparql
> http://www4.wiwiss.fu-berlin.de/gutendata/sparql
> http://www4.wiwiss.fu-berlin.de/medicare/sparql
> http://www4.wiwiss.fu-berlin.de/sider/sparql
> http://www4.wiwiss.fu-berlin.de/stitch/sparql
>
>
> Sesame
>
> http://data.semanticweb.org/sparql
> http://lab3.libris.kb.se/sparql
> http://www.rdfabout.com/sparql
>
>
> ARC2
>
> http://cb.semsol.org/sparql
> http://id.ndl.go.jp/auth/ndlsh/
>
>
> RAP
>
> http://revyu.com/sparql
>
>
> Jena/Joseki
>
> http://www.lotico.com:2020/lotico
>
>
>
Richard,

Also note that we have a DNS Service Discovery (DNS-SD) [1] instance for 
auto-discovery of SPARQL endpoints (critical foundation of SPARQL-FED 
and SPARQL virtualization in general). We'll keep that in sync with CKAN 
also.

The following DNS-SD commands provide access to the data:

1. dns-sd -B _sparql._tcp sparql.openlinksw.com -- browse sparql 
endpoint list
2. dns-sd -L dbpedia _sparql._tcp sparql.openlinksw.com -- lookup 
information about a specific endpoint (*this command is a little flaky 
right now, we are looking into the setup*) .

I've also copied the Bio2RDF folks in since I can tell at first glance 
there are missing endpoints. Also, the massive Protein Database (which 
has 13-14 Billion Triples is missing from the LOD cloud even though this 
instance is live with a SPARQL endpoint).

Links:

1. http://www.dns-sd.org/ -- Home Page
2. http://www.floop.org.uk/eagle/discovering-sparql -- Floop post which 
pretty much set this all in motion .


-- 

Regards,

Kingsley Idehen	
President&  CEO
OpenLink Software
Web: http://www.openlinksw.com
Weblog: http://www.openlinksw.com/blog/~kidehen
Twitter/Identi.ca: kidehen
Received on Friday, 1 October 2010 13:53:41 UTC

This archive was generated by hypermail 2.3.1 : Sunday, 31 March 2013 14:24:29 UTC