OSGeo4W is a binary distribution of a broad set of Open Source geospatial
software for Win32 environments (Windows XP, Vista, etc). OSGeo4W includes
GDAL/OGR, GRASS, MapServer, OpenEV, uDig, as well as many other packages
(about 70 as of summer 2008).
MapServer for Windows from MapTools.org. If you are a beginner looking for
a complete MapServer solution on the Windows platform, or an advanced user
looking to avoid compiling your own, this is what you’re looking for. MS4W
is a complete Web Server/MapServer/MapScript package. MS4W includes
several flavors of MapScript (PHP, C#, Python, Java), and additional dlls
for SDE and Oracle support. Several popular Web applications are also
available for download, which are pre-configured for MS4W.
A collection of Open Source GIS tools provided by Frank Warmerdam. This
goes beyond your basic web mapping tools and include many useful utilities
for creating, manipulating, and serving geo-spatial data.
The FGS Linux Installer is a self-extracting file that will install
MapServer with PHP/MapScript and all of their dependencies on your Linux
system. It provides a stand-alone environment with all the required
software (incl. Apache and PHP) to run PHP/MapScript webmapping
applications. The bundled version of Apache can be configured to run on
any port so it will not interfere with previous installations of Apache or
other web servers on your system.
DebianGIS provides a number of packages including MapServer, PostGIS,
GDAL, QGIS, and GEOS. It sometimes lags a little bit behind the absolute
latest release, but DebianGIS provides a solid integration environment
for a giant slug of Open Source GIS software.
William Kyngesburye provides excellent, up-to-date packages for Mac OS X.
Most of the Open Source GIS stack is provided, including GEOS, GDAL, QGIS,
and PostGIS.