Table 1.

Comparison of Ontokiwi, OntoWiki, Semantic MediaWiki (SMW), and WebProt´g´

Feature	Ontokiwi	SMW	OntoWiki	WebProte´ge´
Main program language	PHP	PHP	PHP	Java
MediaWiki based	yes	yes	no	no
Normal page saved as	Original ontology type	instance	instance	Original ontology type
Hierarchical display	yes	no	no	yes
Axioms with annotation properties	yes	yes	yes	yes
Axioms with object property	yes	no	no	yes
Object/Annotation property editing	no	yes	yes	yes
Version history	yes	yes	yes	yes
Version comparison	yes	yes	no	no
Social discussion	yes	yes	no	yes
Editing Type	Syntax, Form	Syntax, Form	Form	Form
Demo web site	ontobedia.hegroup.org	semantic-mediawiki.org	3ba.se	webprotege.stanford.edu