A non-stirred Belousov-Zhabotinsky (BZ) medium exhibits a rich spectrum of oxidation wave-front dynamics. We overview families of computing devices implemented via interaction of the wave-fronts in the BZ medium. These include irreversible and reversible (Toffoli and Margolus) logical gates, robot controllers, photosensors, thermo-controlled oscillators, simulated of crowd dynamics, arithmetic circuits. Numerical models and experimental laboratory prototypes will be presented.