No license. No online activation. The entire program often runs off a USB stick. For fieldwork or working on ancient lab computers, this is a lifesaver.
Available as a free download, designed to work seamlessly within Microsoft Excel (including versions 2007/2010). Original Version: Also available for earlier Excel versions. Kenneth Pye Associates Ltd gradistat v 91 free
: The software generates frequency distribution curves and cumulative probability plots to help identify depositional environments (e.g., unimodal vs. bimodal distributions). No license
It calculates particle size statistics (mean, mode, sorting, skewness) for sieve or laser granulometer data using Folk and Ward (1957) and method of moments techniques. gradistat v 91 free