cartography

Cartopy

OSS

Python library for map projections and cartographic visualization built on matplotlib.

QGIS

OSS

Free and open-source cross-platform desktop GIS. Create, edit, visualize, analyze and publish geospatial data.

Alternative to ArcGIS, MapInfo Pro

QGIS Server

OSS

Open-source map server for publishing QGIS projects through OGC web services.

Alternative to ArcGIS

Mapnik

OSS

C++ cartographic rendering library for maps and tiles from geospatial data sources.