Abstract
Most supernovae (SNe) are expected to produce a neutron star (NS) observable as a radio-loud pulsar. The observations, however, show very few SNRs/NS associations. This review summarizes recent multiwavelength observations carried out to investigate this issue. The work is focused on the current understanding of pulsar wind nebulae (PWN), and the different ways in which a NS can manifest, like anomalous X-ray pulsars (AXPs), radio-quiet neutron stars (RQNS) and soft gamma-ray repeaters (SGRs)