Very small lightweight pure X11 window manager with tray and menus
  2 reviews

Low resource Window manager ideal for older PCs. It uses a minimum of external libraries, thus very little memory, includes virtual screens, menubar and root-menu popup.

JWM is a window manager for the X11 Window System. JWM is written in C and uses only Xlib and (optionally) the shape extension and libXpm. It can support some MWM, GNOME, and WM Spec hints. The menu configuration files are managed in XML format.

Compared to other light WM, like FVWM or Openbox, the Jwm consumes considerably less memory while providing the same functionality.
Latest reviews
quake0 9 years ago

I don't like it. If you want a light desktop that looks good and is esay to use, use LXDE.

Xyie 11 years ago

Very nice for a lightweight desktop that uses minimal resources and is lightning fast, but beginner users beware! This takes some knowledge to set it up properly and make it look polished. There is much config file editing ahead if you wish to make it pretty. Recommended for intermediate to advanced users.