BPager is a lightweight pager designed to be used with NetWM-compliant window managers like OpenBox.
Unlike many other pagers out there, OBPager has very few dependencies, requiring only Xlib and glibc++ (no Gnome or KDE necessary).
OBPager is pretty straightforward in terms of usage. It correctly displays the windows of a virtual desktop, indicates which is the active desktop, and allows you to switch desktops by clicking on the dockapp.
The command line syntax for obpager is:
obpager [--activefont < fontname >] [--inactivefont < fontname >] [desktop-number]
If no desktop number is specified, an instance of obpager for each virtual desktop is automatically created.