ShareMouse is a free app that lets you share your mouse and keyboard to control multiple computers. It even works across different operating systems. As long as all your computers are connected to the same network as the mouse, you can use all of them, and even do things like dragging and dropping files and sharing a clipboard between devices.
For further cross-OS mouse-sharing apps, take a look at Barrier, Teleport and Synergy, which have similar functionality.
You can use ShareMouse to control numerous Mac and Windows computers. It gives you the benefit of lots of extra screen real estate that you can work with, and will also play smoothly across with a single mouse.
With the Standard Edition of ShareMouse, you’re restricted to one monitor per computer. If you upgrade to the Professional Edition, you can connect up to four monitors per computer.
If you're working with sensitive information across your linked computers, ShareMouse will let you lock or unlock them at the same time. You will get the facility of all the extra screen areas without having to manually control each device.
It's easy to maintain uninterrupted movement across multiple devices. On each device, enable screensaver synchronisation in the ShareMouse settings. After that, when one computer switches to its screensaver, the others will too. Conversely, to wake them all up you just need to wake one of them.
ShareMouse recently included AES encryption in the standard edition. You'll need to go into the ShareMouse settings on each device and ensure that it's password-protected. Once you've done that, they can be unlocked simultaneously by logging into just one of them.
ShareMouse is an excellent tool for specific situations. There are probably not many people who need to work across multiple devices on multiple screens, but if you do, this makes it easy while being intuitive.
With shared security, and the ability to drag and drop files and folders between devices, this lightweight, user-friendly program provides the perfect platform for multi-device multitasking.