QuinStreet, Inc. is a publicly traded marketing company based in Foster City, California. QuinStreet offers performance marketing products and technologies for businesses to reach their targeted audiences. The company was founded in 1999 and went public in 2010. QuinStreet's clients include some of the world's largest brands in education, home services, financial services, and business-to-business technology. The company's proprietary technologies and media reach millions of unique visitors each month. QuinStreet has been recognized for its workplace culture and has been named a Best Place to Work by the San Francisco Business Times and the Silicon Valley Business Journal.