An organizer is constructed to include a base panel, a plurality of top-open pockets located on the outer wall of the base panel for keeping things, Each top-open pocket has a top hem and a resilient metal wire rod hemmed in the top hem to support the respective top-open pocket in shape. A bottom-open pocket is provided at the inner wall of the base panel near the top, the bottom-open pocket having a plurality of through holes in the closed top side, and a hanger is fastened to the bottom-open pocket for hanging the base panel on a support. The hanger has a mounting board fitted into the bottom-open pocket and a plurality of hooks respectively extended out of the through holes of the bottom-open pocket for hanging.