Free GIS Software

Spatial Console
Spatial Console is the ultimate tool for controlling data in an Oracle Spatial environment. The product enables users to import shapefiles into Oracle Spatial or Locator with control over metadata, database constraints, feature history, versioning and coordinate rounding. Exporting from Oracle to several formats is also supported. The import and export facilities of Spatial Console can be conducted in batch mode via the command line if required. Designed for everyday data management, Spatial Console also delivers a fully functional visualisation tool providing navigation, layer management, symbology control and feature selection via both spatial and attribute queries. Users will also have the power to validate Oracle Spatial or Locator features as well as the associated metadata and indexes through Spatial Console.

JT Maps
JT Maps is a full featured GIS software. An integrated system incorporating image processing, digitization and analysis. Built in accordance with industry standards it provides exceptional, yet intuitive capabilities. As a scalable system, starting with or migrating to JT Maps involves a low learning curve.

SAGA
System for an Automated Geo-scientific Analysis -- is a free Geographical Information System ( GIS ). One can understand SAGA as a geographic information system with a special 'Application Programming Interface' ( API ) for geographic data processing. This API makes it easy to implement new algorithms and exempts the developer from hassle programming overhead like user-interface design or file-io. The SAGA API supports grid data like digital terrain models and satellite images, vector data, and tables.

Since the release of SAGA there is a growing collection of SAGA-Modules, in areas of digital terrain analysis, geo-statistics, image processing and process simulation. SAGA is released under GNU Public License ( GPL )