1. Fluent editor (2018).
http://www.cognitum.eu/Semantics/FluentEditor/
2. The neon toolkit (2018).
http://neon-toolkit.org
3. Owlgred (2018).
http://owlgred.lumii.lv/
4. Protégé (2018).
https://protege.stanford.edu
5. Lecture Notes in Computer Science (Lecture Notes in Artificial Intelligence);B Barras,2013