MapServer

What MapServer is

MapServer is a free, open-source geographic data rendering engine written in C. It creates interactive image maps from geographic data and supports cartographic options such as scale-dependent drawing, label collision mediation, template-driven output, and thematic mapping. The project lists support for standards including WMS, non-transactional WFS, WMC, WCS, Filter Encoding, SLD, GML, SOS, OM, and OGC API: Features. Its documentation describes raster formats through GDAL and vector sources such as shapefiles, PostGIS, SpatiaLite, GeoPackage, FlatGeobuf, Oracle Spatial, and MySQL through OGR. Map projections can be applied on the fly through the PROJ library. Listed platforms include Linux, Windows, Mac OS X, and Solaris; the project also lists PHP, Python, Perl, Ruby, Java, and .NET support. The wider suite includes MapCache for tile caching and TinyOWS for transactional WFS requests. MapServer is an OSGeo founding project, maintained by developers and administered within OSGeo by its project steering committee. The project points users to companies offering professional support. Its documentation recommends limiting mapfile access or hiding the MAP parameter on public servers; the archive notes that April 2021 maintenance releases addressed a security flaw related to MAP parameter processing.

Who it suits

MapServer suits developers and organizations building geographic image maps who need the listed data sources, standards, and deployment options. The project also directs users seeking professional help to companies offering MapServer support.

Limits

The plan is free. Spatial analysis is listed as basic.

Getting started

1. Visit the MapServer website.
2. Choose a listed platform: Linux, Windows, Mac OS X, or Solaris.
3. Use the project’s web, API, or self-hosted deployment options.
4. Select the relevant GDAL raster formats or OGR vector sources for your data.
5. Review the project’s guidance for restricting mapfile access or hiding the MAP parameter on public servers.

Verdict

MapServer provides a broad set of geospatial data, standards, and cartography capabilities in a free engine. Its security guidance makes configuration of mapfile access and the MAP parameter important for public servers.