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QGIS (LTR) is a Free and Open Source Geographic Information System (GIS) published by QGIS.org, with the current catalog entry reflecting version 3.44.12 and a total of 19 recorded versions available. Licensed under the GNU General Public License, QGIS is an official project of the Open Source Geospatial Foundation (OSGeo) and is designed to let users create, edit, visualize, analyze, and publish geospatial information. The software falls into the geospatial and mapping software category and is positioned as a user-friendly alternative for organizations and individuals who require professional GIS capabilities without proprietary licensing costs. Typical use cases include viewing and editing vector and raster data, performing spatial analysis, producing maps and cartographic output, and working with spatial databases. QGIS supports numerous vector, raster, and database formats and functionalities, making it suitable for interoperability across a wide range of existing geospatial workflows and data sources. Cross-platform availability is a defining characteristic of the software: it runs on Linux, Unix, Mac OSX, Windows, and Android, allowing deployment across diverse desktop and mobile environments. The LTR designation in this entry refers to the long-term release line, which is generally intended for users and organizations that prefer a more stable release track, while the broader catalog history of 19 versions indicates an actively maintained project with an established release record. As an open source project backed by OSGeo, QGIS can be freely downloaded, used, and distributed, and its development is supported by an international community of contributors. Its combination of broad format support, multi-platform deployment, and zero-cost licensing makes it a relevant option for government agencies, research institutions, educational settings, and private sector users working with geographic data and spatial analysis tasks on a regular basis.
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