Open Source GIS

[Antti.Roppola at brs.gov.au]

URLs from last night. By no means complete as I cobbled
it together after work and before CLUG.

http://www.dmsolutions.ca have some very pretty demonstration apps.

Cheers,

Antti

Software:
Mapserver http://mapserver.gis.umn.edu 
GRASS (recently GPL'ed) 
Open GIS Consortium http://www.opengis.org (WMS standards etc.) 
PostGIS (spatial datatypes for PostgreSQL) http://postgis.refractions.net 
GDAL (Geographic Data Abstraction Library) http://www.remotesensing.org/gdal (support for 27 raster formats, GeoTIFF, ESRI, ECW, PNG, USGS) 
OGR http://gdal.vlocet.ca/ogrhtml (support for vector data types, MapInfo, ESRI Shape, TIGER, SDTS, OGDI)
Proj.4 http://freshmeat.net/projects/proj.4/ (Cartographic projection support)
FreeGIS http://www.freegis.org (a whole lot more resources)

Some relevant standards:
WMS (Web Map Server) OGC's Web Map Server Interfaces Implementation Specification 
	Seee also http://www.digitalearth.gov/wmt/
OGDI http://ogdi.sourceforge.net 
GML (Geographic Markup Language)