The mobility boom has enabled growing, bootstrapped SMBs to take an anywhere, anytime approach to their operations. If the best people for the team are spread across the country--or the globe--that's an opportunity, not a problem. But online project management and collaboration tools are a must--especially for disparate, virtual teams. Basecamp from 37 Signals is an easy-to-use platform for project planning, file sharing, communication, and other needs. Prices start at $49 per month. 37 Signals makes the API available, and developers have created a large menu of add-ons for things like billing and reporting. The company's increasing attention to HTML5 development should appeal to teams operating with a hodge-podge of mobile devices and operating systems.