Some [almost random] links
Journals:
Journal of Maps is a new inter-disciplinary online, electronic, journal that aims to provide a forum for researchers to publish their maps.
Free Software:
Linux,
Free software,
Free GIS.org,
OSGEO,
OSGEO-BR,
Geolivre
GIS, Spatial Statistics:
GRASS-GIS,
R,
GMT,
QGIS,
GDAL,
e-foto,
JGRASS,
gstat,
Shaded Relief
Geo Data:
SRTM-data (USGS),
SRTM-data (NASA),
GLCF,
CBERS-data,
SRTM30PLUS
Research Institutes, People:
INPE,
spatial-analyst.net,
Peter Shary
LaTeX (typesetting):
LaTeX,
Kile,
JabRef
Speleology (caving):
GPME,
Redespeleo Brasil,
Survex,
Therion