MapServer

MapServer is an open-source development environment for building spatially enabled internet applications, built in the C language, and is widely known as one of the fastest Web mapping engines available. It can run as a CGI program or via MapScript which supports several programming languages (using SWIG). MapServer can access hundreds of data formats, any raster or vector format supported by GDAL, and reprojections on-the-fly are handled by PROJ. MapServer was originally developed by Steve Lime, then working at the University of Minnesota — so, it was previously referred to as "UMN MapServer", to distinguish it from commercial "map servers"; today it is commonly referred to as just "MapServer", and is maintained by the MapServer Project Steering Committee (PSC). MapServer was originally developed with support from NASA, which needed a way to make its satellite imagery available to the public.

==Open Source Geospatial Foundation== In November 2005, Autodesk, the MapServer Technical Steering Committee Members, the University of Minnesota, and DM Solutions Group announced the creation of the MapServer Foundation. With this announcement, Autodesk announced that its internet mapping application, MapGuide, would be developed as an open source application with all new code and be named "MapServer Enterprise". The existing MapServer application would be renamed "MapServer Cheetah". This name change was overwhelmingly opposed by the MapServer community. Autodesk then backed off this name change and retained the name, "MapGuide" for its product. Also, plans to establish the MapServer Foundation were scrapped; Instead, the Open Source Geospatial Foundation (OSGeo) was established in 2006 to include MapServer and other open source GIS projects (which includes MapGuide Open Source).