This business-to-business food wholesaler is known for its tasty, all-natural high-energy bars. These bars are made with simple ingredients like fruits, nuts and honey. The product line features 13 different bars to choose from. Popular selections include the Clif Crunch, the Clif Mojo and the Luna Protein bar. Clif bars are available at thousands of retail stores nationwide, including major grocery chains like Whole Foods, Trader Joe's, Walmart and Safeway.