Open IFC Viewer is a powerful open-source application designed for exploring and interacting with IFC (Industry Foundation Classes) files, which are essential in building information modeling. This tool offers various visualization methods, including a tree structure that allows users to traverse the hierarchical components of IFC models, displaying the attributes of each node. Advanced searching capabilities enable users to quickly locate specific instances by their type or global identifier, facilitating the tracking of references throughout the model elements. Furthermore, Open IFC Viewer is equipped with a validation plugin that checks the model's accuracy against schema standards, ensuring attribute consistency and maintaining structural integrity. Users have the flexibility to highlight, isolate, or conceal objects in the scene, as well as adjust lighting settings to improve the overall visualization of the model. The software also features an interactive instance viewer that provides insights into entity definitions and their corresponding attribute values as outlined in the IFC files, making it a versatile tool for professionals in the field. Overall, Open IFC Viewer not only enhances the viewing experience but also supports effective model analysis and validation.