While QGIS excels at individual workflows, collaborative editing of shared datasets remains a challenge. Teams often struggle with server-side storage, synchronization between desktop and web environments, resolving editing conflicts, and tracking the history of data changes.

This talk presents an open-source approach for building collaborative QGIS workspaces using NextGIS components.

NextGIS Web (https://github.com/nextgis/nextgisweb) provides a Web GIS framework designed for storing and publishing geospatial data. It includes advanced user permission management and built-in version control for vector datasets, allowing teams to track edits, roll back changes, and manage collaborative workflows. The system uses QGIS as a rendering engine, enabling almost full support for QGIS symbology in web maps.

NextGIS Connect (https://github.com/nextgis/nextgis_connect) is a QGIS plugin that tightly integrates QGIS with NextGIS Web. It allows users to:
- publish QGIS projects as web maps,
- open web maps directly as QGIS projects,
- edit server-side data directly from QGIS,
- resolve editing conflicts interactively.

The latest release of NextGIS Connect introduces full support for feature attachments (photos, documents, and other files), which can now be managed both from QGIS and from web interfaces. Attachments are also included in the dataset version control system.

In this talk we will demonstrate how these tools enable simultaneous multi-user editing of geospatial data from QGIS, show the workflow of publishing and synchronizing projects between desktop and web environments, and explain how the underlying data version control system tracks and manages changes.

The presentation will be useful for QGIS users who want to build collaborative geospatial workflows without leaving the open-source ecosystem.