It's related to Krebs' Book "Ecological Methodology" and offers "Diversity Estimates (DIVERS) various estimates of community diversity indices" if you rely on indicies.
Perhaps you need an old computer with 32-bit system, never used it with Windows 7, but you can try several compatibility modes in windows, if necessary.
MS-Excel is a simple solution if you know algorithms, calculate yourself with a lot of flexibility for 10 samples (islands) depending on your objective. You need to decide which algorithms and why these algorithms you need to use.