Buy hanging racks for stemware from Amazon.com and Bed Bath & Beyond, as of 2015. A number of different designs and sizes are available, as well as racks made of different materials including metal and wood.
One option from Wine Enthusiast that is sold by both Amazon.com and Bed Bath & Beyond sits below the cabinets. The rack is chrome, holds up to 18 glasses and comes with mounting hardware for easy installation. This rack can hold glassware with a base of up to 3 1/2 inches in diameter.
Another option is the J.K. Adams Company hanging stemware rack sold by Bed Bath & Beyond. Instead of hanging from the cabinets, this rack hangs from the ceiling. The wooden rack holds up to 24 wine glasses, and it suspends from steel cables. This wine glass rack comes with mounting hardware, and the cost is about $70.
For smaller spaces, Amazon.com also has a set of two hanging stemware racks for about $8. These racks are about 10 inches long, are compact and easily install directly under a cabinet. These chrome racks are discreet and have a space-saving design that accommodates bases up to 3 1/4 inches in diameter. The racks are 4 1/2 inches wide and 1 1/2 inches high.