In this webinar, we present SparseBase and SparseViz, products of the SparCity project funded by EuroHPC-JU. The main tool, SparseBase, serves as a preprocessing library tailored for sparse data structures, including sparse matrices, graphs, and sparse tensors. With SparseViz, the library supports diverse reordering and partitioning methods, extracts structural characteristics from input data, and provides a dedicated tool for ordering and visualizing sparse data. The webinar will feature insightful presentations highlighting the libraries' capabilities, complemented by various demonstrations.