GPSMash is a tool for processing tracklogs. Features include:

– data recovery from from broken GPX and NMEA log files
– handling and organizing large amounts of GPS data
– filtering and cleaning-up data
– exporting track data to various formats
– transforming GPS track records according to predefined rules
– analyzing and producing reports from GPS data
– inclusion in scripts for automated data processing

Vesion 1.3 updates include:

– support for NMEA import and recovery of data from broken/incomplete NMEA GPS logs
– better data cleanup

Here is an example video of GPS track visualization produced with GPSMash and Blender:

[Download GPSMash here]