Today, Alexander Bruy announced a new QGIS plugin called RoadGraph. It is a C++ plugin that calculates the shortest path between two points on any polyline layer (e.g. Openstreetmap shapefiles).
More information can be found at GIS-Lab.
Binary files are available for Windows and Linux:
- Windows: http://svn.gis-lab.info/road-graph/binary/roadgraphplugin.dll (MD5 sum:
- Linux: http://svn.gis-lab.info/road-graph/binary/libroadgraphplugin.so (MD5 sum: f48a317381c8d0ef5098f1918f835ca9 libroadgraphplugin.so)