Xephyr

What is Xephyr?

Xephyr is a KDrive-based X server that targets a window on a host X server as its framebuffer. Unlike Xnest, it supports modern X extensions such as Composite, Damage, and RandR, even if the host server does not. Xephyr utilizes SHM Images and shadow framebuffer updates to provide good performance. It also offers a visual debugging mode for observing screen updates

Highlights

• Supports modern X extensions like Composite, Damage, and RandR, even if the host server does not
• Uses SHM Images and shadow framebuffer updates for efficient performance
• Includes a visual debugging mode to observe screen updates
• Can be used as a replacement for Xnest, for window manager and Composite 'gadget' development, toolkit debugging, and X server internals development
• Enables multi-terminal configuration on a single computer to support multiple users simultaneously