XO Group Inc. provides multiplatform media and marketplace services to the wedding, pregnancy and parenting, and local entertainment markets primarily in the United States. It operates a network of Websites under various brands, including The Knot, which offers wedding resources and marketplaces through wedding Website and mobile apps, national and local wedding magazines, and nationally published books; and The Bump, a pregnancy and parenting brand that provides personalized information, content, and tools for navigating the journey from fertility to pregnancy and parenting through the toddler years. The company's network of Websites also comprise GigMasters, an event marketplace for finding and booking the entertainment and vendors for birthday parties, weddings, anniversaries, corporate events, and others. It also offers local online advertising programs, such as online listings, digital advertisements, and direct email marketing; and national online advertising programs consisting of display advertisements, custom and brand-integrated content, direct emails, and placement in its online search tools. In addition, the company provides transaction offerings that include a registry service, which enables users to create, manage, and share various retail store registries from a single source; and retailer and local vendor offerings, such as invitations, stationery, reception decor, and personalized gifts. Further, it publishes The Knot national and regional magazines. The company was formerly known as The Knot, Inc. and changed its name to XO Group Inc. in June 2011. XO Group Inc. was founded in 1996 and is headquartered in New York, New York.