LoroDux is planned to be a OSM and Java based multi platform navigation software for mobile devices for blind and visually impaired persons. Release of first alpha version was September 10, 2010. http://wiki.openstreetmap.org/wiki/LoroDux
Open Source GPS Tracking System. It allows to use mobile phones with J2ME support as mobile trackers and see its tracks on Google Maps online. There is a web RESTful API for GPS data input. See details on http://redmine.wannatrak.com