For those that didn't like d3 ("d cubed"), a "kinkless" GTD Tiddly Wiki, you should try MonkeyGTD:
http://simonbaird.com/monkeygtd/
I've put a summary of its usage on the 43FoldersWiki:
http://wiki.43folders.com/index.php/Monkey_GTD
MonkeyGTD has a really nice "Dashboard" that can be viewed over all projects or for one particular project.
The big difference from d3 is how you collect your actions.
In d3, collection is done as in kGTD. You create a "Project" and then list actions underneath it. It then automatically does the rest.
In MonkeyGTD, collection is done by creating actions and tagging them with contexts and projects. It then automatically does the rest.