Handling the semantic web Corese GUI is an interactive sandbox for working with RDF data. It provides an intuitive graphical environment for loading, exploring, querying, reasoning, and validating semantic datasets. The application supports multiple RDF serialization formats for import/export, includes a Turtle editor, and allows running SPARQL queries directly. It also integrates reasoning engines, supporting both standard profiles like RDFS and OWL, as well as custom rule files for advanced inferencing workflows. With Corese GUI, users can visualize and manipulate semantic data, test SHACL validations, and prototype knowledge-based systems with ease. Additional information: Developer: Inria Research Team Wimmics License: CECILL-C Version: 5.0.0