Google (GOOG) Apps
Watch out, Microsoft (MSFT) Office. Google Apps, the search giant's cloud-based productivity suite, is working its way into the business world. In addition, tools such as Google Voice enable small businesses to look bigger by giving them a single phone number that reaches multiple phones. New, affordable versions of the apps for government offices, as well as improved protection against phishing and malware threats, make Google Apps a worthy challenger to Microsoft's venerable suite.