Infinite Extent is a Windows-based pump test analysis package that includes type curve, graphical, and automatic parameter-estimation techniques. Infinite Extent's drag-and-drop type curve matching is fast and easy. Infinite Extent accepts data for up to five wells for Distance-Drawdown analysis as well as recovery data and partial-penetration data.

You may want to review the following Infinite Extent companion products:
StepMaster - Aquifer Step-Drawdown Test Analysis
Super Slug - Aquifer Slug Test Analysis