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OSGeo
The Open Source Geospatial Foundation.
GDAL
GDAL is a translator library for raster geospatial data formats.
A library and set of commandline utility applications for reading
and writing a variety of geospatial raster (GDAL) and vector (OGR)
formats.
OGR
The related OGR library (which lives within the GDAL source tree)
provides a similar capability for simple features vector data.
FDO
FDO Data Access Technology is an API for manipulating, defining
and analyzing geospatial information regardless of where it is
stored.
GRASS
Commonly referred to as GRASS, this is free Geographic Information
System (GIS) software used for geospatial data management and analysis,
image processing, graphics/maps production, spatial modeling, and
visualization.
FWTools
FWTools includes OpenEV, GDAL, MapServer, PROJ.4 and OGDI as well as
some supporting components.
OpenEV
OpenEV is a software library and application for viewing and analysing
raster and vector geospatial data.
A high performance raster/vector desktop data viewer and analysis tool.
uDig
uDig is an open source (LGPL) desktop application framework, built with
Eclipse Rich Client (RCP) technology.
QGIS
Quantum GIS (QGIS) is a user friendly Open Source Geographic Information
System (GIS) that runs on Linux, Unix, Mac OSX, and Windows. QGIS supports
vector, raster, and database formats.
MapServer
A web mapping package.
Proj.4
OGDI
OGDI is the Open Geographic Datastore Interface. OGDI is an application
programming interface (API) that uses a standardized access methods to work
in conjunction with GIS software packages (the application) and various
geospatial data products.
A multi-format raster and vector reading techology noteworthy for inclusion
of support for various military formats including VPF (ie. VMAP, VITD), RPF
(ie. CADRG, CIB), and ADRG.
Mapnik
Mapnik is a OpenSource C++/Python toolkit for developing mapping applications.
At the core is a C++ shared library providing algorithms/patterns for spatial
data access and visualization.
OpenLayers
OpenLayers makes it easy to put a dynamic map in any web page. It can display
map tiles and markers loaded from any source.
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