Do you mean an open source that you want to integrate it in a specific application ?

I just tried http://owl.cs.manchester.ac.uk/browser/ and got page not found.

Did you tried Google? I found several url for "ontology browser" search. For example:

http://agem.cnb.csic.es/VisualOmics/OwlViewer/index_OV.html. Some of them are specific: https://www.vectorbase.org/ontology-browser.

And there is https://code.google.com/p/ontology-browser/, but the access to this site was denied for me, then I have no idea what it is about.

@Rey

Yes, this is the tool I was referring to (https://code.google.com/p/ontology-browser/), but I am not sure why you can't access it.

As for the other two links you posted, thanks a lot, but the first one points to an unavailable URL, while the latter does not find the target page.

@Samir

Actually I want a free tool, I don't necessarily want it to be open-source, since I am not planning to integrate it into an application of my own.

Hmm, I opened both again, no problem, at least from here. Regarding google´s, it is due Google restrictions for some regions...

Have you tried

Protege

http://protege.stanford.edu/ as an ontology editor?

@Rey and @Sowmya

Thank you very much for your suggestions. My problem is that most of the tools you suggested have a pre-loaded set of ontologies and do not offer the option of loading another ontology. So far, only Manchester's ontology editor did the job for me.

@Jacqueline

Of course I am aware of Protege, but as I mentioned in my original question I am not looking for an ontology editor but only a browser. And, besides, Protege is not that easy to use as an ontology browser for the unfamiliarized user.

@Sowmya

Thank you very much for all your effort! :)

I have downloaded oBrowse and will deploy it on my local Tomcat in a while.

Meanwhile, I have also deployed Manchester's ontology browser here (http://kerveroc.gr:8888/browser/) - feel free to play around and experiment with browsing some ontologies (it has some pre-loaded ontologies, but you can also input the URL of your ontologies if you like).

Will get back to you with my feedback on the oBrowse tool.

@Efstratios

I've been using for some time lightweight ontology editor as a ontology browser. Try swoop app. It is very simple but also efficient

https://code.google.com/p/swoop/

I also admit that there doesn't exist very nice OWL browsers over the web. Couple of months ago, I tried to work with Protege to visualize my ontology but I couldn't do that on windows, although I had installed GraphViz on my computer. Any case, I overlooked many browsers and I could make something visualizaed by making use of OWLGred (http://owlgred.lumii.lv/) tool, which was very easy to use, although the graph was not very nice. It has both web and desktop version that worths to try.

Hope this helps!

For publishing the Getty vocabularies, I've used http://ontorule-project.eu/parrot/parrot.

See http://vocab.getty.edu/ontology .

There's also http://neologism.deri.ie/, which makes a diagram (eg http://vocab.deri.ie/void). But I prefer to make my diagrams with PlantUML (which uses GraphViz).

http://kerveroc.gr:8888/browser/ is down... Let us know which tool you select at the end.

Adding to what @Jacqueline Blake said, you probably want to use WebProtege, which is accessible from the Protege website or directly here:

http://webprotege.stanford.edu

http://webprotege.stanford.edu

Swoogle is a semantic web search engine which searches across ontologies

http://swoogle.umbc.edu/ 

CMap is a downloadable ontology visualisation tool ((http://www.ihmc.us/groups/coe/)

@Suparna

Thanks for that, will try it ASAP (site is currently down)

I hope this would help:

http://www.brenda-enzymes.org/ontology/index.php4

http://ws.nju.edu.cn/falcons/objectsearch/index.

http://swoogle.umbc.edu/

http://sindice.com/

http://vocab.cc/

http://watson.kmi.open.ac.uk/WatsonWUI/

Protege (protégé.stanford.edu) is the more user by the research community.

I've stumbled on this while following web URIs for a couple of ontologies: http://www.essepuntato.it/lode. It looks nice, but I haven't done a throughout test.

OntoWiki allows for importing and web-based browsing of ontologies

http://aksw.org/Projects/OntoWiki.html

http://vowl.visualdataweb.org/webvowl.html also for Protege.