Yesterday I uploaded spatialite into Fremantle’s extra-devel.
Spatialite itself isn’t directly useful to the average Maemo user, but it ca be lot of fun if you’re a developer and are interested in GIS.
Spatialite is a sqlite3 extension for geo-spatial data and compatible with OpenGIS, which means you can store any map’s nodes (using a OSM nomenclature) into sqlite and use them in your application, with SQL methods that will make easier the management of the node in the map space.
If you need something more powerful you might give a look at http://postgis.refractions.net/, but this is a bit heavy for Maemo :-p
Soon a new version of Map Buddy will be available, supporting point of interest from OpenStreetMap (theoretically any source) and using spatialite (the reason for which I uploaded it), but I’ll write specifically about it in another post.