[OSGeo-Discuss] online open source polygon mapping, like OSM?

[Noli Sicad]

> Someone also told me you can do polygons in openstreetmap (parking lots,
> buildings, etc.). Does anyone know how to do this? I can't seem to be able
> to figure it out...

Vector editing in OpenLayers (i.e. drawing points, lines and polygons).
http://openlayers.org/dev/examples/vector-formats.html

You can use OSM as your basemap for the editing.

You need Geoserver and/or Mapserver for the timeline with OpenLayers.

WMS-T Support in Geoserver and Mapserver
http://underdark.wordpress.com/2011/06/10/wms-t-support-in-geoserver-and-mapserver/

Noli