GeoServer is an open source server for sharing geospatial data.
Designed for interoperability, it publishes data from any major spatial data source using open standards.
Built on Open Standards
GeoServer is a OGC compliant implementation of a number of open standards such as Web Feature Service (WFS), Web Map Service (WMS), and Web Coverage Service (WCS).
Additional formats and publication options are available including Web Map Tile Service (WMTS) and extensions for Catalogue Service (CSW) and Web Processing Service (WPS).
Being a community-driven project, GeoServer is developed, tested, and supported by a diverse group of individuals from a number of different organizations around the world.
The following products are kindly supporting open source projects like GeoServer.
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GeoServer Beginners Guide Available from Packt Publishing.