Synergy - Cross-platform software for sharing your mouse and keyboard between multiple computers
Duet Display - With Duet Display, you can transform your iPhone or iPad into a second display to expand the screen space of your PC or Mac system.
Input Director - Control multiple windows systems with one keyboard/mouse. Share a keyboard and mouse across multiple windows system.
spacedesk - spacedesk expands the Windows desktop computer screen to other computers over the local area...
Barrier - Barrier is a cross-platform software for sharing your mouse and keyboard between multiple computers...
Air Display - Air Display allows extra screens to extend the display size of a Mac desktop. The company behind the product is Avatron Software, which was founded in 2008. Read more about Air Display.