Development of golem is done at http://golem.sourceforge.net/ and its mailing list is also available.
golem does not have any particular base program and is written from a scratch. But it is easy to employ as it offers many common maneuverability as in other light-weight window managers.
As for a feature, using plug-ins enables animation when a window is closed or in a task bar you can get various effects from them.
Figure 1. See how simple it is (using a task bar)
It can also be used with gnome.
Clicking on an edge of screen you can move from the current workspace to the next workspace configured by the system.
At a point in a window pressing Alt key and left click on your mouse can grab the window and change its location.
In a position in a window pressing Alt key and right click on your mouse can resize the window by mouse dragging.