Greenlight Bookstore was founded in 2014 and provides a free, turnkey retail platform for e-books and audiobooks. Greenlight Bookstore allows bookstores, publishers, media, non-profit organizations, bloggers, and others to compete with Amazon, Apple, and Barnes & Noble in the digital space. Hummingbird is a marketing partner of American booksellers. Their platform integrates seamlessly with the ABA IndieCommerce and IndieLite platforms. Each merchant has its own brand and customizable storefront for its customers to use to discover, buy, and download e-books and audiobooks. They also get a powerful reading and listening brand app. Merchants can sell directly to customers from a full catalog of more than 3,400 publishers, including Workman, S & S, Hachette, Macmillan, HarperCollins, Penguin Random House, and more.