What is openEMS?

Welcome! openEMS is a free and open electromagnetic field solver using the FDTD method. Matlab or Octave are used as an easy and flexible scripting interface.

It features:

• fully 3D Cartesian and cylindrical coordinates graded mesh.
• Multi-threading, SIMD (SSE) and MPI support for high speed FDTD.

For a more extensive list of features have a look at the openEMS features.

Download openEMS

openEMS is available for Windows & Linux. Use the installation guide for further information. Download here:

• Linux build instructions.
• Source package (older versions here).
• Win 64bit

News and Anouncements

• 03.02.2019: Talk on openEMS at FOSDEM'19
• 08.11.2018: openEMS.de is back up on a new host. Read more here!
• 18.02.2017: openEMS release v0.0.35!
• 12.05.2016: Release of v0.0.34!
• 10.10.2015: Release of v0.0.33!

License & Reference

• openEMS is licensed under the GNU GPL, Version 3 or later.
• CSXCAD is licensed under the GNU LGPL, Version 3 or later.
• We kindly ask you to reference openEMS in any publication that you were using openEMS for.
• Have a look at the list of publications referencing openEMS: List of publications.