EASAL For configurations of point-sets that are pairwise constrained by distance intervals, the EASAL software implements a suite of algorithms that characterize the structure and geometric properties of the configuration space. The algorithms generate, describe and explore these configuration spaces using generic rigidity properties, classical results for stratification of semi-algebraic sets, and new results for efficient sampling by convex parametrization. Intuitive visualization software is optionally provided. The software has applications in areas such as computation of free energy and kinetics of assembly of supramolecular structures or of clusters in colloidal and soft materials. EASAL Software Repository Web Version of EASAL EASAL Video