Maelstrom is a numerical software tool for the solution of magnetohydrodynamics problems in cylindrical coordinates. As such, Maelstrom includes time integrators for the heat equation, for the Navier--Stokes equations, and a stationary solver for the Maxwell equations.
The latest development version of Maelstrom's sources are always available at:
https://github.com/nschloe/maelstrom
They can be downloaded as a zip file or using the Git client.
Maelstrom is published under the GPL3 license. See the file COPYING for detailed information.