Get it at http://www.racesimcentral.net/~rsdi/
From the site:
==========================================
What is it
F1PerfView is a telemetry viewer for Windows, supporting GP2/GP3
performance analysis, F1RS/MGPRS2 telemetry files and generic text
files. It includes most of the features that the internal GP2/GP3 and
F1RS viewers have, plus a text view, a statistics view, a time
difference graph, and a track view (not for MGPRS2). It also allows a
combination of upto 256 perf files to be compared. The latest version
can always be obtained at http://www.racesimcentral.net/~rsdi/f1perfview/
==========================================
There is another interesting announcement on the site as well. Check
it out :-)
JoH