A tag is a keyword or label that categorizes your question with other, similar questions. Using the right tags makes it easier for others to find and answer your question.
a cross-platform GIS application licensed under the GNU General Public License.
when ArcGIS Desktop is the product and architecture that you are using from the ArcGIS platform.
A site-package created by Esri to expose ArcGIS Desktop (ArcMap and ArcGIS Pro) geoprocessing, mapping, etc, to Python.
an open source interpreted programming language used in many GIS programs.
an extension for the PostgreSQL object-relational database that adds support for geographic objects.
a data format consisting of regular grids of values, usually stored in an image-like format.
A reference framework consisting of a set of points, lines, and/or surfaces, and a set of rules, used to define the positions of points in space in either two or three dimensions.
the main application of ArcGIS for Desktop and the tag for that (arcgis-desktop) should normally be used in preference
an open source software server written in Java that allows users to share and edit geospatial data.
A vector data storage format for storing the location, shape, and attributes of geographic features. Often referred to as 'an ESRI shapefile', as ESRI developed it.
GDAL (Geospatial Data Abstraction Library) is an open source translator library & set of command-line utilities for processing raster spatial data formats. As a library, it presents a single abstract …
when ArcGIS 10.0 is the version you are using from the ArcGIS platform.
when ArcGIS 10.1 is the version you are using from the ArcGIS platform.
when ArcGIS 10.2 is the version you are using from the ArcGIS platform.
an open source object-relational database system.
On a map, a closed shape defined by a connected sequence of x,y coordinate pairs, where the first and last coordinate pair are the same and all other pairs are unique.
when ArcGIS for Server is the product you are using from the ArcGIS platform.
a prototype-based, object-oriented scripting language that is dynamic, weakly typed and has first-class functions.
a collaborative project to create a free editable map of the world. The data is free, and free of legal and technical restrictions. OpenStreetMap is often shortened to OSM.
a set of COM-based APIs from ESRI Inc. that are used in several of their products including ArcGIS Desktop, ArcGIS Engine and ArcGIS Server.
Software plugins that add functionality to the QGIS package
An application of ArcGIS Pro and also of ArcGIS Desktop 10.x that is used to create, edit and manage models within its Geoprocessing Framework
GRASS GIS (Geographic Resources Analysis Support System) is a free, open source geographical information system (GIS) specialized in handling raster, topological vector, image processing, and graphic …
when ArcGIS 10.3 is the version you are using from the ArcGIS platform.
a standard protocol for serving georeferenced map images over the Internet
Use for questions about Field Calculators of QGIS, ArcGIS Desktop, etc and their Calculate Field tools
Rendering values from attribute tables as text on maps near their feature. For questions about legend labels use the [legend] tag instead.
Questions seeking data (except commercial) recommendations are usually better asked at the Open Data Stack Exchange