2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/40440There exist several well-motivated candidates for non-baryonic cold dark matter, including neutralinos, axions, axinos, gravitinos, Wimpzillas. I review the dark matter properties of the neutralino and the current status of its detection. I also discuss the axino as a new interesting alternative.Invited plenary review talk given at 6th International Workshop on Topics in Astroparticle and Underground Physics (TAUP 99), 6-10 September, 1999, Paris, FranceHigh Energy Physics - PhenomenologyAstrophysicstext