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QGIS

Free and open-source geographic information system

Maps & GIS ★ 14.6k stars Medium setup GPL-2.0

QGIS is a professional, full-featured geographic information system for creating, editing, analyzing, and visualizing spatial data. It runs on the desktop and supports many data formats and plugins.

Official siteSource code

Key features

  • Full GIS analysis toolkit
  • Many data format support
  • Large plugin ecosystem
  • Map composer

Pros & cons

Strengths

  • Free professional GIS
  • Huge plugin ecosystem
  • Reads nearly any spatial format

Trade-offs

  • Desktop app, not a server
  • Steep learning curve

Is QGIS secure?

No known vulnerabilities affect QGIS's latest release (final-3_44_15). OSV.dev lists 2 past advisories for the project; none of them applies to this release. No known vulnerabilities is not proof of security: it means none have been publicly catalogued.

  • Most recent fixed advisory CVE-2026-104140, published 2026-10-12 (2 days ago), fixed in 4.2.3

Source: OSV.dev, checked 2026-10-14. How this is measured.

QGIS replaces

Self-hosted ArcGIS alternatives

Health badge

Maintain QGIS? Add its health score to your README. The badge links back to this page.

SelfHostIndex: 96 · excellent

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[![SelfHostIndex health score for QGIS](https://selfhostindex.com/badge/qgis.svg)](https://selfhostindex.com/app/qgis/)
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<a href="https://selfhostindex.com/app/qgis/"><img src="https://selfhostindex.com/badge/qgis.svg" alt="SelfHostIndex health score for QGIS"></a>
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   :alt: SelfHostIndex health score for QGIS
   :target: https://selfhostindex.com/app/qgis/

The score is recomputed on every nightly rebuild from public repository data — see how it is calculated.

Compare QGIS

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