Many free and paid applications that you can download to your computer can increase productivity. Microsoft Office Communicator is an add-on to Microsoft Office that provides instant message and voice and video call services. for example. FreshBooks is also a good cloud accounting tool and Spotify, an online music player, lets you listen to tunes but conveniently shuts off if a call comes into your computer. Another program, Switch Off, forces your computer to hibernate for a certain amount of time, helping you to take breaks, Dempsey says.