Google Inc. will sell the online services of other business software makers in an effort to fill its own product gaps and persuade more companies to rely on applications piped over the Internet. The online store that was announced late Tuesday marks another step in Google's crusade to convert the world to “cloud computing,” the idea of running applications in Web browsers instead of installing them on individual hard drives. The information entered in the programs also is stored in data centers run by third parties such as Google. More than 50 software makers have agreed to sell their Internet programs through Google, which will keep 20 percent of the sales. The prices are expected to range from $50 annually to several hundred dollars annually per user. Intuit Inc., a maker of business accounting software, and Concur Technologies Inc., a maker of expense reimbursement software, are among the best-known vendors peddling their wares in Google's store. The applications store could also could provide fodder for the low-cost computers that will run on a Google operating system named after its Chrome Web browser. The first computers using Chrome OS won't have a hard drive, meaning they will need Internet access and cloud-computing services to perform the tasks routinely done on Windows-powered machines.