Most of the contributors are mentioned at Github as Members or Contributors. Here is a manual overview
- ammagamma, improvements like #700, #703
- AnahitaS, docs for Android, Android, Tomcat
- andreaswolf, flag encoder versioning and more
- agouge, discussion and API refactoring
- b3nn0, Android improvements
- boldtrn, motorcycle and improvements like conditional tag parsing, round trips and a lot more
- cgarreau, increase of routing success rate via subnetwork cleanup
- ChristianSeitzer, motorcycle improvements
- daisy1754, fixed usage of graphhopper.sh script
- dardin88, instructions improved
- dewos, web API bug fixes
- devemux86, improvements regarding Android, GPX and more
- edy, improvements regarding docker #849
- elibar, fix for alternative route calculation
- dos65, bug fixes in routing algo
- drnextgis, ru translation and JS fixes
- duongnt, fixes in storage
- fbonzon, UI improvements like #615
- florent-morel, improvements regarding fords, #320
- fredao, translations
- HarelM, improvements regarding elevation
- HelgeKrueger, modularization of javascript, #590
- henningvs, doc improvements
- highsource, more efficient geometry update, ui fixes
- IsNull, improvements like #708
- jansoe, many improvements regarding A* algorithm, forcing direction, roundabouts etc
- jansonhanson, general host config
- JohannesPelzer, improved GPX information and various other things
- karussell, one of the core developers
- khuebner, initial turn costs support
- lmar, improved instructions
- michaz, public transport
- mprins, improvements for travis CI and regarding JDK9 #806
- NopMap, massive improvements regarding OSM, parsing and encoding, route relations
- ocampana, initial implementation for instructions
- PGWelch, shapefile reader #874
- ratrun, route relations, GPX information, bike handling etc
- rajanski, script to do routing via PostGIS
- rodneyodonnell, improved dead end removal and fords
- rodo, more descriptions
- seeebiii, motorcycle improvements
- Svantulden, improved documentation and nearest API
- thehereward, code cleanups like #620
- vvikas, ideas for many to many improvements and #616
A lot people helped to create translations - thanks! See this spreadsheet