  Reactive systems are characterized by the interaction with the environment,
where the exchange of the input and output stimuli, usually, occurs
asynchronously. Systems of this nature, in general, require a rigorous testing
activity over their developing process. Therefore model-based testing has been
successfully applied over asynchronous reactive systems using Input Output
Labeled Transition Systems (IOLTSs) as the basis. In this work we present a
reactive testing tool to check conformance, generate test suites and run test
cases using IOLTS models. Our tool can check whether the behavior of an
implementation under test (IUT) complies with the behavior of its respective
specification. We have implemented a classical conformance relation \ioco and a
more general notion of conformance based on regular languages. Further, the
tool provides a test suite generation in a black-box testing setting for
finding faults over IUTs according to a specific domain. We have also described
some case studies to probe the tool's functionalities and also to highlight a
comparative analysis on both conformance approaches. Finally, we offer
experiments to evaluate the performance of our tool using several scenarios.
