noVNC : Easy way to share your screen without configuration

VNC is platform-independent – noVNC is a VNC viewer on one operating system may connect to a VNC server on the same or any other operating system.

There are clients and servers for many GUI-based operating systems and for HTML5. Multiple clients may connect to a VNC server at the same time. Popular uses for this technology include remote technical support and accessing files on one's work computer from one's home computer, or vice versa.