OS GML Viewer 4.3

OS GML Viewer by Snowflake Software Ltd is a dedicated, easy-to-use application for opening and exploring Ordnance Survey datasets delivered in GML (Geography Markup Language). It provides a fast way for GIS professionals, data managers, and developers to view, understand, and validate OS data—such as OS MasterMap layers—without the overhead of a full GIS.

Key capabilities:

• Quickly open and visualize OS GML files with clear, readable default styling
• Pan and zoom with smooth map navigation to explore large datasets efficiently
• Toggle layer visibility to focus on specific feature types and themes
• Inspect feature attributes and metadata by selecting items on the map
• Respect the coordinate reference information embedded in the data
• Support common QA tasks, helping you verify deliveries before loading into a database or GIS

Whether you’re checking a new data delivery, performing light quality assurance, or getting familiar with a dataset’s structure, OS GML Viewer offers a straightforward way to work with Ordnance Survey GML content.

OS GML Viewer is developed by Snowflake Software Ltd. The most popular version of this product among our users is 4.3. The name of the program executable file is OSViewer.exe.

You can check MOOS Project Viewer, Steelray Project Viewer, CAD Viewer and other related programs like Image Viewer at the "download" section.