gvSIG
gvSIG is a free software development project for geographic information systems that mainly includes the gvSIG Desktop and gvSIG Mobile applications. gvSIG Desktop was the first application developed by the gvSIG project, therefore it is also known as gvSIG.
gis software australia is a computer program for managing geographic information with cartographic accuracy and is licensed under the GNU GPL v2. It provides access to vector and raster information as well as map servers that comply with OGC specifications. This is one of the main characteristics of gvSIG compared to other geographic information systems, an important implementation of OGC services: WMS (Web Map Service), WFS (Web Function Service), WCS (Web Coverage Service), Directory Service, and Service. Gazetteer.
It is developed in the Java programming language, works with Microsoft Windows, Linux and Mac OS X operating systems, and uses recognized standard GIS libraries such as Geotools or the Java Topology Suite (JTS). In addition, gvSIG has a scripting language based on Jython, and extensions can also be written in Java using the gvSIG classes.
Quantum GIS
Quantum GIS (or QGIS) is an open source Geographic Information System (GIS) for the GNU / Linux, Unix, Mac OS and Microsoft Windows platforms. It was one of the first eight OSGeo Foundation projects to officially exit the incubation phase in 2008. It can handle raster and vector formats as well as databases. Some of its characteristics:
- Support for spatial extension PostgreSQL, PostGIS.
- Processing vector files Shapefile, ArcInfo coverage, Mapinfo, GRASS GIS, etc.
- Support for a large number of raster file types (GRASS GIS, GeoTIFF, TIFF, JPG, etc.)
One of its biggest advantages is the ability to use Quantum GIS as a graphical user interface for SIG GRASS, leveraging the full analytical power of the latter in a friendlier working environment. QGIS is developed in C ++ using the Qt GUI library.
SAGA GIS
SAGA (Spanish for System for Automated Geoscientific Analyzes or System for Automated Geoscientific Analyzes) is a hybrid geographic information software (see Geographic Information Systems).
The first goal of SAGA is to provide an efficient and simple platform for implementing geoscientific methods through a programming interface (API). Second, make these methods available in a simple way. This is achieved primarily through a graphical user interface (GUI). Together, API and graphical interface make up the true potential of SAGA – a fast growing and growing system of geoscientific methods.
GMT
As explained on the official GMT website http://gmt.soest.hawaii.edu/, GMT, which stands for Generic Mapping Tools, that is, Tools for Generating Maps, is a free software package. open, consisting of about 60 1 scripts, for processing geographic data and, in general, data in two and three dimensions, including algorithms for filtering, projection, mesh overlay, etc. You can create illustrations in Postscript files, starting from 3D drawings and ending with colored three-dimensional surfaces. GMT can generate about 30 types of geographic forecasts and contains information about rivers, coasts and national boundaries in its files.
We only need a handful of them. GMT can also read coasts, boundaries, rivers and lakes as vectors (that is, as mathematical curves) and is directly or indirectly compatible, through transformations, with known geographic databases.
GRASS
GRASS (Geographic Resources Analysis Support System) is a GIS (Geographic Information System) software licensed under the GPL (Free Software). It can support both raster and vector information and has digital imaging tools.
Initially, in 1982, the software was developed by the United States Army Corps of Engineers (USA-CERL) as a tool for monitoring and managing the environment in areas under the control of the Department of Defense did not find a GIS on the market that would meet these requirements. In 1991, it became available to the public via the Internet. Its popularity is growing in universities, companies and government agencies. In 1997, when USA-CERL GRASS announced the end of support for the program, Baylor University took over its development. Since that date, his recognition in the academic world has increased. On October 26, 1999 with version 5.0, the program code is released under the GNU GPL license. GRASS was one of the first eight OSGeo Foundation projects. In 2008, he officially ended the incubation period.
