Cable training devices are disclosed that are modular, lightweight, and portable. The disclosed cable training devices can be mounted to virtually any accessible surface or object via a modular mounting platform. The cable training devices include a base unit that is easily attachable to and removable from one or more modular spring plates that provide resistance. The base unit contains a reel or spool with a cable wound around it. Pulling on the cable is resisted by the attached modular spring plates, which each contain a coil or power spring. The modular spring plates can be added or removed from the base unit to vary the resistive force applied to the cable.