The OntoUML lightweight editor (OLED) is an environment for the development, evaluation and implementation of domain ontologies using the UFO-based ontologically well-founded modeling language OntoUML. The tool provides a simple, lightweight and integrated set of features to ontology engineers, such as syntactical verification, visual simulation, model checking, model inference, automatic semantic-anti-patterns detection and correction, validation of parthood relations and ontology patterns. The tool is mainly based on the TinyUML editor and aggregates many direct and indirect contributions for NEMO http://nemo.inf.ufes.br/ research group members. OLED supports models from Sparx System Enterprise Architect. The modeler can import models designed with EA into OLED and benefit from all the editor's capabilities. See this wiki: How to Install OntoUML in the Enterprise Architect (EA)