Cogui, developed since 2005 and written in Java, is a graphical editor for building and checking knowledge bases. It is primarily devoted to conceptual graph knowledge bases, while providing imports and exports from and to the Datalog+/- format supported by our tool Graal. It also provides imports and exports from and to RDFS.


Graal, developed since 2014, is a Java toolkit dedicated to querying knowledge bases within the framework of existential rules, aka Datalog+/-. It provides imports from OWL 2 and exports to RuleML.


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