GeoServer is an Open Source server that will allow you to connect your information to the Geospatial Web.
With GeoServer you can publish and edit data using open standards. Your information is made available in a large variety of formats as maps/images or actual geospatial data.
GeoServer's transactional capabilities offer robust support for shared editing. GeoServer's focus is ease of use and support for standards, in order to serve as 'glue' for the geospatial web, connecting from legacy databases to many diverse clients.
GeoServer supports WFS-T and WMS open protocols from the OGC to produce JPEG, PNG, SVG, KML/KMZ, GML, PDF, Shapefiles and more. More information on specific features of GeoServer can be found here, and some samples of GeoServer in action are in the gallery.

What's New in This Release:
Referencing:
· NTv2 and NADCon Support allows for datum transformations with cm level precision (instead of the usual 4m, when all goes well). Both will activate only if the grid files are present in the data dir, so by default the mere presence of the method is harmless, but generally speaking this is very good news for whoever needs to increase reprojection accuracy.
· Continued work for supporting high accuracy datum transformations that now allow for user defined transformations supplied via WKT.
· A new reprojection console allows users to interactively test transformations of points and other geometries back and forth between the chosen CRS, and also to verify the transformation method used matches the user expectations.
· Better support for un-referenced data with the new EPSG:40400 code that identifies a coordinate system made up of a generic 2D Cartesian plane. As well as support for EPSG:102113 as an alias for Web Mercator.
Data access:
· Database-level security implements the abili...