 Polyhedron is a cognitive IT platform that provides digital support for scientific research. It uses existing informational ontology-based tools as well as custom-designed tools to complement a full stack of instruments. These tools include search systems, hypothesis testing systems, a center for collective use, sources recommended by the Ministry of Education and Science of Ukraine, Scopus sources, and promising developments from the National Academy of Sciences of Ukraine. All of these tools are structured into a centralized ontology, allowing users to compare them with existing classic web-based analogs. This article was authored by Roman A. Teresenko, Vykureb Shepavlov, Stanislav A. Yusenko, and others.