Data portals

FAO GeoNetwork
http://www.fao.org/geonetwork

Global Administrative Unit Layers (GAUL)
http://www.fao.org/geonetwork/srv/en/metadata.show?id=12691

Geographical Names
http://unstats.un.org/unsd/geoinfo

International and administrative boundaries
http://boundaries.ungiwg.org

International Charter "Space and Major Disasters"
http://www.disasterscharter.org

UNEP.net
http://unep.net

United Nations Entry Point to Geospatial Data Clearinghouse
http://gateway.ungiwg.org

UNOSAT Remote Sensing Data Archive
http://www.unosat.org/ungiwg
http://www.unosat.org

WFP VAM-SIE
http://vam.wfp.org/geonetwork

WHO GeoNetwork
http://www.who.int/geonetwork

Selected links

ADDS - African Data Dissemination Service above
http://igskmncnwb015.cr.usgs.gov/adds/

ESDI-GLCF - Earth Science Data Interface at the Global Land Cover Facility
http://glcfapp.umiacs.umd.edu:8080/esdi/index.jsp

NASA - OnEarth, server of the Landsat 7, WMS Global Mosaic
http://onearth.jpl.nasa.gov/

Relief Web
http://www.reliefweb.int/rw/dbc.nsf/doc100?openForm

UNEP-WCMC Centre's Interactive Map Service
http://imaps.unep-wcmc.org/imaps_index.htm