Hi,
I highly suggest Dart, Ruby or R.
Seriously, it depends on the file and what is inside the file. This topic has been discussed in the past: there's no common structure for the traces (beside a very few) simply because there's too many cases.
Consult the manual about how tracing works and the source files you're running to find out what are the data you're obtaining. Next, they can be analysed with any system, usually gnuplot, or matlab. Even Excel could do.
Cheers,
T.