2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/178366We study the cluster mass function and its evolution in different models with Dark Energy arising from a self--interacting scalar field, with Ratra-Peebles and SUGRA potentials. Computations are based on a Press & Schechter approximation. The mass functions we obtain are compared with results holding for open models or models with Dark Energy due to a cosmological constant. Evolution results, in the Dark Energy cases, closely approach open models.13 pages, 3 new figures included, references added. Accepted for pubblication in New AstronomyAstrophysicstext