Hello Sergey,
Unfortunately, a tool that makes ontology editing an easier process still
does not exist. The utilities we use internally are mainly Protege
(protege.stanford.edu) , SWOOP (code.google.com/p/swoop/) and mostly text
editors.
Usually we have data in the form of lists of
Сергей, this type of functionality is frequently requested. We are porting the
KIM UIs into a new framework e.g. check http://factforge.net/
On top of it we will provide kb editing at some point - but still not the case.
The other approach with a FOREST interface is to use the built-in
