While Steam remains the largest digital storefront for personal computer distribution, a number of other storefronts have opened since, with Itch.io, established in 2013, more focused on serving indie games over mainstream ones, providing the develop with store pages and other tools to help with marketing. Others serve more as digital retailers, giving tools to the indie developer to be able to accept and redeem online purchases and distribute the game, such as Humble Bundle, but otherwise leaving the marketing to the developer.