DiInSo 1.0 that could have been downloaded from our website for free. DiInSo is categorized as Education Tools. The most popular version of the DiInSo is 1.0. The actual developer of the free program is IPGG SB RAS GeoElectric Laboratory.
From the developer:
The Direct-Inverse-Solver (DiInSo) software package is orient to solve direct 3D and inverse 2D/3D electrical resistivity tomography (ERT) problems on direct current (DC).
You may want to check out more software, such as MB Free Muhurtha Astrology, Deming or MathFlow for XMetaL, which might be related to DiInSo.