Web Map Server


The OpenGIS Web Map Server (WMS) protocol defines a simple interface for web based mapping applications. The WMS protocol is based on a simple query syntax for posting a request for the desired layers and zoom window to the server, which returns a map as a standard picture (GIF, PNG or other format)

As part of our online documentation, a quick introduction to how the WMS protocol works is provided to get you started.

For a comprehensive technical background and official specifications for the WMS protocol, we strongly recommend you to begin by reviewing the WMS specification document provided by the Open Geospatial Consortium.


Some unique features that distinguish the Demis WMS server from competitive products are:

  • Optimized for performance, outruns most competitive products
  • Support for vector based GIS layers, imported from common GIS formats
  • Support for grid based GIS layers, including interpolation, contouring, relief shading
  • Support for image based GIS layers, including ECW and MrSID format images
  • Support for tiling, allowing huge data sets to be rendered efficiently
  • Plug-in interface, allows the programming of custom graphics on top of any map
  • Variety of output formats, GIF, PNG, BMP, JPEG, SWF
  • Specific support for developing clients using Macromedia Flash
  • Comes bundled with a huge 1:1,000,000 scale world map data set compiled from various sources

For a more practical introduction, you can try out our WMS implementation using a simple Flash based client right here:

System requirements
The Demis Web Map Server runs on Microsoft Windows NT/2000/2003/2008 (and afaik also newer) server editions with IIS web server.

The Demis WMS service components are COM based, WMS connector scripts are provided for integration with ASP 2.0 or ASP.NET web programming environments.


Because it was not further developed anymore, the Demis WMS currently is free software. So the only thing you have to do is applying this license code 0101545601930533 to register a new installation of the Demis WMS (Run register license as administrator as well as the DEMIS WMS configuration application, to make sure you do not run into issues on newer versions of Windows. And make sure that the WMS is running in a 32 bits application pool, if it is installed on a 64 bits operating system).

You can download the installation here.

Together with the public domain worldmap.

In order to prepare maps for the Demis WMS you need Mapper.


Documentation can be found here. If you are looking for information you cannot find, please contact us at support@demis.nl.