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Mandarax is a pure Java implementation of a rule engine. It supports mutiples types of facts and rules based on reflection, databases, EJB etc, supporting XML standards (RuleML 0.8). It provides a J2EE compliant inference engine using backward chaining.
Oryx is a collection of graphical user interface components to edit mandarax (www.mandarax.org) knowledge bases. Oryx consists of two parts: oryx standalone is a Swing application while Oryx server is a server application.
Chameleon is a rule-based expert system to assist farmers in semi-arid areas to prevent bush encroachment.
It runs as a web-application on a Tomcat server with MySQL and is based on the Mandarax library for deduction rules and its front-end, Oryx.