Peermaps is a project to bring OpenStreetMap data to the p2p web.
I've just finished a big part of this project: subdividing planet-latest.osm.pbf to support ad-hoc
extracts. With ad-hoc extracts over p2p networks, you can download only the parts of planet osm that you need
without having to download the whole 34G thing and process it using tens of gigabytes of RAM. Using the peermaps
data archive, you can build tile sets for the entire planet on very modest hardware. Every .o5m.gz
file is at most 1M.
More details below.