ACE View is an ontology and rule editor that uses Attempto Controlled English (ACE) in order to create, view and edit OWL 2 ontologies and SWRL rulesets.
* You can create OWL/SWRL knowledge bases by working solely in ACE.
* You can open existing OWL 2 ontologies and view them as ACE texts.
* You can edit OWL/SWRL knowledge bases (i.e. add, remove, modify OWL axioms and SWRL rules) by switching between the ACE view (i.e. controlled English) and the traditional "Protégé views" (forms and description logic formulas).