I'm using Neon-Toolkit, clear and fast:

http://neon-toolkit.org/wiki/Main_Page

Topbraid Composer free edition provides decent support also for ontology instantiation (at

Waralak, please check out the corresponding Wikipedia article (https://en.wikipedia.org/wiki/Ontology_editor) and search for 'visual' (5 hits as of today but certainly more visual editors available and not mentioned on that page). For beginners, I think, it is more important to understand the idea of ontologies.

have you ever tried protege ?  it is a very complete ontology editor for the beginner.

http://protege.stanford.edu/

very interesting tutorial to create your first ontology 

http://protegewiki.stanford.edu/wiki/Ontology101

I am using protege... and there is also a web version...

I sometime ago started using Protege editor and I really liked it and the Pizza Ontology example associated with Protege editor was quite awesome cos it give s a very thorough overview on the what we can do with protege as well as what ontologies are, which was amazing experience for a newbie like me several years ago.

I have also used Topbraid Composer and I know a lot of semantic gurus like it however I don`t really find it too straightforward.

Well I think it`s up to you which tool you want to use, please check both out! 

You will not go wrong with PROTÉGÉ - http://protege.stanford.edu/

I'm using Protégé.

I'm using Protégé.

I have been used protege for many years; I don't think it is suitable for the non-expert.

thank you so much for all the kind suggestion.

For a beginner, I  think Protégé is easy to learn and use

I agree Protege is a good tool, depending on the background knowledge of the user. I use it in teaching 2nd year Bachelor students Artificial Intelligence. That works ok. There is of course the excellent pizza tutorial and plenty of other stuff available on the web.

 i agree me too. the last version of Protégé is simple and it includes a plugin that create a graph of your ontology, and you can choose differents options to show in it.

I would say that for the beginner, Fluent Editor by Cognitum, would be well worth looking at. The reasons I like this are:

• For academic and personal use it is free!
• Cognitum has developed what they call "Controlled English" or "Controlled Natural Language (CNL)" that they use in their editor. This is more easily understood by "mere humans" like myself; OWL has very technical and precise language to describe ontologies that can be daunting for the beginner.
• You can export from the CNL format to OWL, and for pedagogical purposes this can be an excellent path to learn the more formal language.
• There is a connection with R (also free!) that is very exciting to explore (I like R!) and this also provides the means for Fluent to provide visualizations of ontologies.

Good luck!

http://www.cognitum.eu/semantics/FluentEditor/

http://www.r-project.org/

good morning (afternoon) i think is Protégé 2000.   http://protege.stanford.edu/.

don't forget their other DLL.

Protégé as editor, Stardog as RDF-graph database server and reasoning tool.

I've always used Protégé, is simple and complete, didactically is very good.

I also use protégé. It is easy to learn. So many materials available for leaning.  

I can think of only two tools: Protege and SWOOP. Protege is well evolved.

I would recommend Protege, simple and powerful.  The Pizza tutorial is well desinged for begging. 

Protege is a good option. It is the most used tool in academic environment. However, I don't recommend  beta versions.

Regards

Protege is a good option.

Protege is a good option. You may also use OWL API directly.

I also go with Protégé.

You could also try ROO from the University of Leeds, it is a controlled natural language interface and use the CNL Rabbit.  This is translated into OWL by ROO (Rabbit to OWL Ontology Authoring).  ROO also offers guidance for the beginner.  It is a plugin for Protege.  It can be download from here: http://www.comp.leeds.ac.uk/confluence/downloads.shtml.

I would most definitely recommend using Protege (usual Java client version instead of online version); in my field it is clearly the most used editor for ontology design.

Pros are that it is usually free, quite stable nowadays, has a nice tutorial both for ontologies and using Protégé (pizza tutorial), is mostly OWL2 compliant, and relies on a strong community of users and developpers.

Protege is a good one and has a large support community.

Try this very easy and simple tutorial to start with building Ontologies:

https://www.youtube.com/playlist?list=PLea0WJq13cnAfCC0azrCyquCN_tPelJN1

I am a beginner and I am using Protege and it is very easy to learn. So I am suggesting you Protege.

protege is fine especially protege 3.5 , though its old but can be a good starting point with good support and gui. all the best

just play with protege.

protege is easy to use

Top braid composer free edition  this come  as free for 15days.

Protege is simple and there are many tutorials published.

Protege might be handy for you as a beginner. 

Protege as editor and Stardog as a server )

You should try OntoStudio - it's free for non-commercial use- 

Thank you for all the kind answers, hope you all are enjoy writing the paper and doing the research. i am appreciated your kind reply.

Best regards, 

Lak

I use standalone Protege and it is a great tool. There is also a web version.

thank you Antonio

I propose   TopBraid Composer Standard Edition :

 http://www.topquadrant.com/tools/modeling-topbraid-composer-standard-edition/

I recommend protege. Both client and web version have great usability.

Eddy is a great graphical editor:

https://www.obdasystems.com/eddy

Protégé-2000

Free and easy.

We recently release a tool for ontology editing using UML as graphical language. It is a beta version but we think that it is a powerful tool for OWL 2 QL ontologies and taking advantage of the standard visual languages.

crowd

http://crowd.fi.uncoma.edu.ar/wicom-qdod/web-src/model_editor.php?type=UML

the protege

Protégé is easy to use

Protégé...

It was very useful to me. "Protege." I recommend this paper: Ontology Development 101: A Guide to Creating Your First Ontology https://protege.stanford.edu/publications/ontology_development/ontology101.pdf

Fluent Editor.

protege would be a good choice

https://protege.stanford.edu

I recommend this one: http://trinidata.com/onto_pro.htm

Protege 5.5.0 is available

ONTOLIS is a beginner friendly, very visual ontology editor but is directed mostly at large enterprises, due to it's heavy-duty features.*

Protege is neat and became more stable with the latest releases. I'd start with that and see where it gets you.

*Disclaimer: I'm an active developer on this project.

I think the Protege ontology editor from Stanford is the best tool for beginners. It is free and extremely robust and has excellent support for a free tool. The user support for Protege mailing list is very active and experienced developers such as myself as well as the people currently working on Protege answer virtually all questions with a day or less. I recently wrote an update of the standard Pizza tutorial for Protege. It is meant for beginners and goes into the basics but also has additional chapters for people who want to understand more advanced tools such as SWRL, SPARQL, and SHACL. Protege can be downloaded here: https://protege.stanford.edu/ You can also find the link to sign up for the user support list there. My Protege tutorial can be found here: https://www.michaeldebellis.com/post/new-protege-pizza-tutorial

I know this is an old post but in case others have the same question thought I thought they might find this info useful.

Michael

In my opinion, Eddy is the best ontology editor.

https://www.obdasystems.com/eddy

This is a graphical OWL editor, much better than Protege for visualizing the ontology.

Check Stardog Studio, it is useful and actively developing. It allows to use Stardog backend as well.

Hi,

I will suggest OntoUM

https://nemo.inf.ufes.br/en/projetos/oled/

Thanks

Hi!!

In metaphactory platform we have implemented the visual ontology editor with quite a low entry barrier. We believe, it is rather intuitive and the knowledge of the specific domain is sufficient to get started. You can head to the dedicated help page for more details: https://help.metaphacts.com/resource/Help:VisualOntologyEditing

I hope this could be of help for you!

Protege would be a good starting point for beginners to develop ontologies.

I recommend Protégé. It would give you a good starting point

Protégé 2000.

https://protege.stanford.edu/