  Although the black holes are an integral part of the standard model of
astrophysics and cosmology, their existence poses some serious fundamental
problems. In recent years, several horizonless compact object models were
proposed to address those issues. As the gravitational wave detectors started
to observe more and more merger events with a large signal-to-noise ratio,
gravitational wave spectroscopy could hold the key to uncover the existence of
these objects. This is because the late time ringdown signals of horizonless
compact objects differ from that of the black holes. In this paper, we study
the ringdown properties of charged compact objects and compare them with those
obtained in the black hole scenario. Since the internal structure and the
equation of state of these compact objects are largely unknown, we employ
membrane paradigm to obtain appropriate boundary conditions for the
perturbations of these objects. This model can describe the ringdown properties
of a large variety of compact objects.
