I am currently working on a planning system for cycling, walking, sailing, etc. It is based on both a fixed network and a full OSM network. There is a web app for the planning of routes and a mobile app for the navigation of these routes.
Among others i have used the following tools: postgresql, postgis, pgrouting, QGIS, Open Jump, Google Maps, Osmdroid, leaflet.
Atm i am interested in fast routing solutions that allow me to route realtime on larger OSM datasets (>100K ways).