Welcome to MapServer

MapServer is an Open Source platform for publishing spatial data and interactive mapping applications to the web. Originally developed in the mid-1990’s at the University of Minnesota, MapServer is released under an MIT-style license, and runs on all major platforms (Windows, Linux, Mac OS X). MapServer is not a full-featured GIS system, nor does it aspire to be. See the Site Gallery for live examples of MapServer in action.

The MapServer Project Steering Committee (PSC), sanctioned by OSGeo, manages and administers the project which is maintained, improved, and supported by developers and users from around the world. See the community activities page for mailing lists, etc.

Digital Object Identifier (DOI) for MapServer

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Notitie

For a list of current companies offering professional MapServer support see Service Providers.

University of Minnesota, birthplace of MapServer. Data © OpenStreetMap contributors. (steps…)

MapServer Suite Home

MapServer, MapCache, TinyOWS home

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Recent Announcements

2025-11-18 - MapServer 8.6.0-beta2 is released

The second beta for MapServer 8.6 has been released. The list of major changes for this release can be found in the 8.6 announcement. See the changelog for the full list of changes and head to Download to obtain a copy.

2025-09-19 - MapServer 8.4.1 is released

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Security release available

The maintenance release of MapServer 8.4.1 has been issued in order to fix a security flaw for WFS filters through OGR. See the changelog for the list of changes. You may also review MapServer’s Security Policy, the CVE record: CVE-2025-59431, as well as this Security Advisory. As security for the 7.6 branch has ended, and branches 8.2 & 8.0 are not supported, all users are strongly encouraged to upgrade to the MapServer 8.4.1 release (see the Migration Guide).

Head to Download to obtain a copy.

2025-01-15 - MapServer 8.4.0 is released

The major version MapServer 8.4 has been released. The list of major changes for this release can be found in the 8.4 announcement. See the changelog for the full list of changes and head to Download to obtain a copy.

2025-01-08 - MapServer 8.4.0-rc1 is released

The first release candidate for MapServer 8.4.0 has been released. The list of major changes for this release can be found in the 8.4 announcement. See the changelog for the full list of changes and head to Download to obtain a copy.

2024-12-14 - MapServer 8.4.0-beta2 is released

The second beta for MapServer 8.4 has been released. The list of major changes for this release can be found in the 8.4 announcement. See the changelog for the full list of changes and head to Download to obtain a copy.

2024-09-02 - MapServer 8.2.2 is released

The maintenance release of MapServer 8.2.2 is now available. See the 8.2.2 changelog for the full list of changes.

Head to Download to obtain a copy.

2024-08-02 - MapCache 1.14.1 and TinyOWS 1.2.2 are released

The minor versions MapCache 1.14.1 and TinyOWS 1.2.2 have been released. The list of changes for these release can be found in the MapCache changelog and TinyOWS changelog.

Head to Download to obtain a copy.

2024-07-21 - MapServer 8.2.1, 7.6.7 are released

Several maintenance releases of MapServer have been issued in order to fix a security flaw for the tostring() expression function. See the 8.2.1 changelog, 7.6.7 changelog for the list of changes. You may also review MapServer’s Security Policy.

Head to Download to obtain a copy.

2024-07-08 - MapServer 8.2.0 is released

The major version MapServer 8.2 has been released. The list of major changes for this release can be found in the 8.2 announcement. See the changelog for the full list of changes and head to Download to obtain a copy.

View all MapServer Announcements.