Ask HN: Simple SCRUM tool

My team has gone from SCRUM Works to Pivotal Tracker. But I think both these apps have too much cruft and advanced features / settings. To the extent of making the SCRUM process something enterprise-y.

Am I wrong in thinking you only need some lists with values for doing SCRUM? And a graph, for stakeholders? And, is there a simple tool for this? I'm close to just mocking something up myself, since it seems to be a lack of a simple SCRUM tool.