2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/1661903-quasi-Sasakian manifolds were recently studied by the authors as a suitable setting unifying 3-Sasakian and 3-cosymplectic geometries. In this paper some geometric properties of this class of almost 3-contact metric manifolds are briefly reviewed, with an emphasis on those more related to physical applications.5 pages, submitted to the Proceedings of the XVI International Fall Workshop on Geometry and Physics, Lisbon, 2007Differential Geometry53C15, 53C25, 53C26text