PyrouteLib - OpenStreetMap Wiki
Open Source: a rich Vehicle Routing Problem solver / Development / OpenStreetMap Forum
OSM Routing Data Layer - OpenStreetMap Wiki
Route Planning with OpenStreetMap - Jakob Miksch
Openrouteservice
OSM Routing Data Layer - OpenStreetMap Wiki
Routing on OpenStreetMap.org | OpenStreetMap Blog
open navigation overview: 4 OSM routing services - Digital Geography
Short Announcement: New OSM routing plugin for QGIS OSM Tools - Digital Geography
Relation:route - OpenStreetMap Wiki
Routing in polygon layers? Yes we can! | Free and Open Source GIS Ramblings
Openrouteservice
Openrouteservice
OSM Routing Data Layer - OpenStreetMap Wiki
GitHub - fbenz/osmrouting: A fast and optimal routing service for cars, bikes, and pedestrians that is based on OpenStreetMap data
GitHub - riatelab/osrm: Shortest Paths and Travel Time from OpenStreetMap with R
Why would you use OpenStreetMap if there is Google Maps? - Geoawesomeness
QGIS Plugins planet
GitHub - graphhopper/graphhopper: Open source routing engine for OpenStreetMap. Use it as Java library or standalone web server.
Open Source Routing Machine - Wikipedia
Routing in pedestrian areas - OSM Help
Time-Dependent Route Optimization API - GraphHopper Directions API
