- chucre, add special JSON output format, see #41
- karussell, Peter Karich, GraphHopper GmbH, initial version
- michaz, very important hidden markov improvement via hmm-lib, see #49
- rory, support milisecond gpx timestamps, see #4
- stefanholder, Stefan Holder, BMW AG, creating and integrating the hmm-lib (#49, #66, #69) and penalizing inner-link U-turns (#88, #91)
- kodonnell, adding support for CH and other algorithms (#60) and penalizing inner-link U-turns (#88)
For GraphHopper contributors see here.