The QGIS Brazil community has undergone a significant transformation, evolving from a localization-oriented group into a strategic contributor within the global ecosystem. This session analyzes the community’s growth trajectory, illustrating how localized software, documentation, and robust user-support networks acted as catalysts for widespread professional adoption across Brazil.
A pivotal milestone in this journey was the QGIS LATAM 2024 conference, which unified regional efforts and strengthened integration with global QGIS.org structures. This organizational maturity culminates in the 2026 release of QGIS 4.2 LTR "Belém do Pará," a version that serves as both a technical tribute to the community’s contributions and a legacy of hosting major FOSS4G events. The presentation discusses governance models for coordinating thousands of users, strategies for long-term engagement, and the impact of regional LTR naming on the visibility of Latin American geospatial expertise. It provides a blueprint for regional groups transitioning from software consumption to active, strategic contribution.

This presentation details the technical implementation of a QGIS-based geospatial workflow within the Municipal Treasury of Caucaia, Brazil. As the Secretariat of Finance (SEFIN) transitioned from fragmented legacy systems to a centralized spatial database, QGIS emerged as the primary tool for fiscal auditing and land administration.
The core of the methodology relies on the integration of QGIS with PostGIS to perform spatial analysis for tax consistency verification. We demonstrate how automated processing models cross-reference cadastral data with high-resolution imagery and external registries. A key focus of this session is the technical challenge of aligning municipal data with Brazilian national standards, specifically SINTER (National Land Management Information System) and CIB (Real Estate Registration National Code).
SINTER represents a major interoperability milestone and a significant technical hurdle for all 5,570 Brazilian municipalities. This presentation highlights how Caucaia successfully navigated these requirements using FOSS4G. Attendees will gain insights into how open-source tools facilitate fiscal justice through precise territorial management, offering a replicable success story for other jurisdictions facing complex national integration mandates in a demanding public sector environment.