List of Open Source GIS Tools

osgeo.md

GIS Tools - Open Source

Client-side Web Mapping (Slippy Maps)

• LeafletJS - http://leafletjs.com/
• OpenLayers - http://openlayers.org/
• OpenLayers 3 Beta - http://ol3js.org/
• Modest Maps - http://modestmaps.com/
• Polymaps - http://polymaps.org/

Programming/CLI tools

• GDAL/OGR - http://www.gdal.org/
• RGeo - http://dazuma.github.io/rgeo/
• GeoDjango - http://geodjango.org/
• TurfJs - https://github.com/morganherlocker/turf

Tile Tools

• Mapnik - http://mapnik.org/
• SimplerTiles - http://propublica.github.io/simpler-tiles/

Desktop Tools

• QGIS - http://qgis.org

Spatial Databases

• PostGIS (PostgreSQL) - http://postgis.net/
• Spatialite (SQLite) - https://www.gaia-gis.it/fossil/libspatialite/index
• MySql Spatial Extensions - https://dev.mysql.com/doc/refman/5.7/en/spatial-extensions.html
• Mongo Spatial - http://docs.mongodb.org/manual/core/geospatial-indexes/
• CouchDB spatial - https://github.com/couchbase/geocouch/

More complete list: http://opensourcegis.org/