MOUNTAIN VIEW, Calif. ( TheStreet) -- Google ( GOOG) has opened a new online store for integrated business applications. The Google Apps Marketplace allows customers "to easily discover, deploy and manage cloud applications that integrate with Google Apps," the company said in a blog post. Google said more than 50 companies are now selling apps at its store, including Intuit ( INTU) and Concur Technologies ( CNQR). Once installed to a company's domain, the apps will work like native Google applications, the search giant said. The apps then could interact with Google's Gmail, calendar and document offerings. Reports say Google will keep 20% of the sales. Prices are expected to range from $50 annually to several hundred dollars annually per user, the Associated Press says. -- Reported by Joseph Woelfel in New York. Follow TheStreet.com on Twitter and become a fan on Facebook.