Oracle Spatial and Graph features can be used together with several popular geospatial open source software components.  Here are related links and information.

GDAL Support for Oracle Spatial GeoRaster

 

 

GDAL is an excellent tool for loading several raster formats into Oracle Spatial GeoRaster.  Learn how to export and import other formats using GDAL.

About the Oracle Spatial GeoRaster driver for GDAL

GDAL Supported Raster Formats

Getting Started With GDAL Presentation (PDF )

Code examples (how to use and compile GDAL)

MapServer – Download and Configuration Information

MapServer is an open source platform for publishing spatial data and interactive mapping applications to the web. Also learn about the connection between MapServer /CGI/ and an Oracle Spatial database server on a linux box

 

QGIS – Connection Information for Oracle Spatial
 

QGIS is an open source GIS tool for viewing, analyzing, and publishing spatial data on the Internet.  It supports the Oracle Spatial vector geometry and GeoRaster datatypes.