The 4.0.17 version of BiotSavart for Mac was available to download on the developer's website when we last checked. We cannot confirm if there is a free download of this app available. This Mac application is an intellectual property of Ripplon Software Inc. According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software. The software relates to Education Tools.
From the developer:
BiotSavart calculates the magnetic field resulting from general 3-D configurations of current-carrying conductors. It has proven useful in the design of superconducting and copper coil systems. Conductor types include current loop, thin and thick solenoid, racetrack coil, and filamentary wire of arbitrary path. The magnetic field can be calculated along any path and graphed; or on any plane surface to give a contour plot.
You may want to check out more software for Mac, such as Genealogy Pro, Analytics to Earth or TreeView X, which might be related to BiotSavart.