Ws2m, software for the measurement and analysis of species diversity

Ws2m estimate the number of species in a collection of identified individuals generating a series of statistics for a randomly ordered data set. Ws2m uses a large (and user-controllable) variety of estimators to produce the estimates. It also reports the number of individuals used to that point and the actual number of species so far obtained in the collection. It can report species-abundance distributions and Jaccard indices.