Create RDF ontology graphs online from scratch

This videos talks about Webvowl online tools which can be used to quickly create new and/or graphically represent your existing RDF ontology in an interactive and intuitive way. Existing ontologies can be imported in number of supported formats such as (.owl, .ttl, .n3, .xml, ld+json). Furthermore, the ontology can be modified by adding/updating/deleting classes as well as the object and datatype properties. Lastly, the final graph can be exported as an image in .svg format and/or as serialized object in .json, .ttl or .tex format.

Thank you very much!

[TheAjit]

Great Job!!!! You have explained everything in a lucid manner. Please add more videos on RDF RDFS, OWL, Thank you very much.

[JimLoganIII]

'Horror' and 'Action' are _instances_ of 'Genre', not sub-classes of it.

[pricesmith]

Im still confused about how to actually implement these ontologies into databases like jena or rdflib. Creating instances with properties, etc. And, does the db have to have this ontology imported, or is it just for the reasoner?

[RobertAlexanderRM]

Unfortunately the referenced website does not exist/work anymore.

[dharmeshtalpada]

in which software i have made this type of graph of RDF?
plz help