VNC Viewer is a software application that allows users to remotely access and control another computer over a network. It uses the Virtual Network Computing protocol to transmit the screen display and input commands, enabling users to interact with the remote machine as if they were sitting right in front of it. This is particularly useful for troubleshooting, remote work, and accessing files from different locations. The application is available for various operating systems, including Windows, macOS, and Linux. Users can connect to a remote computer by entering its IP address and authentication credentials. VNC Viewer is widely used in IT support and by individuals who need to manage multiple devices remotely.