A movement device for the sliding movement of furniture and wardrobe doors having inner and outer doors which slide along parallel tracks/guides. The movement device includes inner and outer pairs of carriages each having a roller. The carriages are fixed to the inner front of each door. A plate directly attaches each inner carriage to the inner door. A frame with an inverted “U” cross-section attaches each outer carriage to the outer door. Air pistons are fixed proximate the ends of the guides, along which the rollers of the carriages slide for the cushioned stop at the end stroke of moving the carriages when opening and closing the doors. The mounting device includes a support member housing a second piston which is surmounted by an elastic clamp. The clamp selectively interfaces with an aligned wedge extending from a carriage from the other door to prevent abutment between door handles.