It redisplays the stuff in the savefiles, so, yes you can see the last ship you flew, but you can't see a history of ships you flew. It does keep track of the score you had at each level (I plan on updating things so it shows the score you earned that level, rather than the total score you had when you completed it.)
It's also possible to tell you what persistent variables are saved for a given campaign, and what their value is. Or what various keys are mapped to.
The biggest problem is that there's too much information in the files.

Finally, the frontend is written in wxWidgets so it's mostly portable to OSX/Linux. (The backend needs some work).