For the Europeans 2015 I wrote a software that can analyze all tracks and find high ascend/descend rates depending on distance. The software is very fast, it runs the tracks of a flight with 100 pilots in approximately 10 seconds.
Also, the software can find large ascend/descend rates in proximity of waypoints (e.g. targets) or find balloons within the proximity of another balloon at a given time.

I decided to publish the software freely to everybody who would like to use it. The software currently can only work with tracks from Balloon Competition Loggers and if those are set to 1 second interval.

The software can be downloaded from the BSA page.