Handling projects with multiple people is easy with Google Documents. Instead of emailing attachments around for teammates to review and edit, the document stays in one place. People log in using their Gmail account, and then can create, view and edit documents on the fly. Being a web app, this works on almost every computer or smartphone. All it needs is an internet connection. Android and iOS apps are available for phones and tablets. It’s not just word processing documents, but also spreadsheets, slides and forms. The best part is that it’s free.