lite Forum
This is not a module. It's just another theme based on Holy Grail and controlled by Grid and developed as a subtheme of Zen.
Another Holy Grail theme in series which is relatively stable now is: Plain Grail
Currently liteForum holds 25 collapsible blocks. It is designed for community site. It has important bugs on (5) sidebars I am working on. But to get idea what it might look like, you can try one of these:
Road map: to merge them into one blocks-rich theme whenever possible. The former should be the way to go, by design:( Block lovers are invited to share opinions on how it should look like:) Please bear in mind, it is not too useful for simple personal need. It is not a starter theme either, but may always work as a starter-starter theme:)
