Is there any software out there to visually represent the branches, directories and tags created as I develop a Ruby on Rails program?

I am looking for software to illustrate all the directories and branches I have created during a Ruby on Rails program but cannot find any. I feel it would be really useful to have a graphical representation of what branch/directory I am currently in relative to the others etc. Also to have an illustration of the various tags and versions I have created and be able to click back and forth between them. Does anyone else think this would be useful at all?? And if software like this exists could you post a link? Thanks in advance.