Freelance software developer Matthew Allum created the Matchbox Window Manager, a lightweight program designed to more efficiently run X11 applications on handheld devices. But Allum’s project worked so well, it caught the attention of a giant in the handheld space.
Matchbox, a 50KB highly flexible window manager that depends only on xlib, which makes it lightweight enough to run on small devices without using too many resources.
Matchbox “stacks” open windows one on top of another and allows access to each through the use of a drop-down menu on the title bar. Users can’t move or resize windows, which sounds restrictive, but actually works well because of the extremely limited screen space on small devices.