The DHL Competitor crossword solutions are UPS (3 letters), USPS (4 letters), and FEDEX (5 letters). UPS, or United Parcel Service, is an American multinational package delivery and supply chain management company. USPS, or United States Postal Service, is an independent agency of the United States federal government responsible for providing postal service in the United States. FEDEX, or Federal Express, is an American multinational courier delivery services company. All three companies provide delivery services and compete with each other in the market.