The Dolle polished chrome atlas shelf support and blind shelf supports are good quality hidden shelf brackets. Each of these brackets has a 4.5-star rating or higher on Amazon.com as of January 2016.
The Dolle polished chrome atlas shelf support comes with two 8-inch posts that are made of steel, mounting instructions, screws and anchors. It works with glass and wood shelves, can be used for shelves up to 10 inches deep and supports up to 66 pounds. It has a five-star rating on Amazon.com.
The blind shelf supports consist of brackets for a shelf that is 8 inches deep and about 34 inches long, has a 50-pound weight capacity and gives the image of a floating shelf. It has a 4.5-star rating on Amazon.com.