GoldenCheetah is a software package that:
* Downloads ride data directly from the CycleOps PowerTap and the SRM
  PowerControl V.  Support for SRM PowerControl VI and VII is planned
  for the future.
* Imports ride data downloaded with other programs, including
  TrainingPeaks WKO+ and the manufacturers' software for the Ergomo,
  Garmin, Polar, PowerTap, and SRM devices.
* Provides a rich set of analysis tools, including a critical power
  graph, BikeScore calculation, histogram analysis, a best interval
  finder, and a pedal force versus pedal velocity chart, to name just
  a few.

Optional dependencies: R, libkml