qx11

QX11 is a name that has been used for several separate, unrelated software projects related to the X Window System (X11). There is no single official project universally known as QX11, and references to the term can be found in diverse contexts. In practice, the label has appeared on efforts involving the Qt toolkit and X11, but each implementation tends to have its own scope, goals, and maintenance status.

Projects bearing the QX11 name have typically sought to bridge Qt applications with X11 resources, provide wrappers around X11 libraries (such as Xlib or XCB), or offer minimal X11 servers or clients for embedded, educational, or experimental use. Because the name is reused independently, the resulting software can range from lightweight utilities and test tools to more feature-complete, but niche, integrations.

Platform support for items labeled QX11 generally centers on Unix-like systems running an X.Org server. Some versions were aimed at embedded environments with limited resources, while others targeted developers seeking hands-on experience with X11 programming in a Qt context. In many modern Linux environments, Qt applications interact with X11 through established libraries or via compatibility layers in Wayland-based sessions, reducing reliance on any specific QX11 component.

Development status varies by project; some iterations appear infrequently updated and remain of interest mainly to researchers, hobbyists, or legacy-system maintainers. Given the ambiguity surrounding the name, users are advised to verify the exact project identity, license, and current activity when encountering a reference to QX11.

See also: X Window System, Qt framework, XCB, Wayland, Xlib.