Menthor Editor was developed by Menthor using Java, was available in English, and was a multiplatform software being compatible with Windows, Linux and OS X.
The developer's of Menthor Editor reported in 2000 that it is no longer maintained and that it has been replaced by the OntoUML Plugin for Visual Paradigm,[10] informing that features of the Menthor Editor will gradually be migrated to this new solution.
References
^Moreira, Joao; Sales, Tiago Prince; John, Guerson; Bernardo Ferreira Bastos, Braga; Freddy, Brasileiro; Vinicius, Sobral (2016). "Menthor Editor: an ontology-driven conceptual modeling platform"(PDF). 9th International Conference on Formal Ontology in Information Systems (FOIS 2016).
^Barcelos, Pedro Paulo Favato; Santos, Victor Amorim; Silva, Freddy Brasileiro; Monteiro, Maxwell; Garcia, Anilton Salles. "An Automated Transformation from OntoUML to OWL and SWRL". Seminário de Pesquisa Em Ontologias No Brasil (ONTOBRAS).