This chapter gives an overview of Boolean computing devices, built from nanoscale magnetic structures, such as nanomagnets and domain wall conduits. These devices were intended to replace CMOS digital logic in many applications, where low power consumption and embedded nonvolatile storage are important. Magnetologic devices have reached a high state of the art, and all functionalities required for a Boolean logic have been demonstrated; this makes them unique among emerging, exotic computing concepts. The chapter will largely focus on nanomagnet-based device ideas and domain-wall-based concepts, and quasiparticle-based ideas will be discussed in less detail. This book chapter borrows many parts from Webster et al. (Nanomagnet logic. In: Wiley encyclopedia of electrical and electronics engineering, 2015) and Csaba et. al. (Nanomagnetic logic: from magnetic ordering to magnetic computing. In: CMOS and beyond: logic switches for terascale integrated circuits, 2015) but attempts to give a broader perspective.