Fluxbox

Fluxbox © is yet another windowmanager for X. It's based on the Blackbox 0.61.1 code. Fluxbox looks like blackbox and handles styles, colors, window placement and similar thing exactly like blackbox (100% theme/style compability).

So what's the difference between fluxbox and blackbox then?

The answer is: LOTS!

Fluxbox Documentatiion

Home of Fluxbox