GSI's Geological Mapping Programme present a viewer that makes 3D
geological models accessible to everyone without having to download software or
zip files. The viewer hosts models produced in-house or in collaboration with
other institutions (for example, iCRAG), irrespective of the software
originally used to create them. It offers many interactive functions, including
tools to identify layers and create synthetic boreholes and virtual
cross-sections.
Access project, demo video, viewer and user manual here.