WindowLab is an X window manager for Unix-like systems. It is based on aewm and retains that window manager's small and lightweight nature. In many aspects, WindowLab has looked to the Amiga's user interface for inspiration without cloning it completely. Its top-level menu bar is accessed by a right click as on the Amiga and it follows Fitts's law of usability in that once the mouse enters the menu area it is constrained there in both the horizontal and vertical directions.