Download of ecgsim 3.0.0 was on the developer's website when we last checked. We cannot confirm if there is a free download of this software available. This PC program is suitable for 32-bit versions of Windows XP/7/8/10/11.
The actual developer of the free program is Medical Physics, University of NIjmegen, the Netherlands. 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 most popular versions among ecgsim users are 3.0, 2.2 and 2.1. The program belongs to Education Tools. Commonly, this program's installer has the following filename: ecgsim.exe.
From the developer:
ECGSIM is an interactive simulation program that enables one to study the relationship between the electric activity of the heart and the resulting potentials on the thorax: PQRST wave forms as well as body surface potential maps. It is intended to serve as both an educational and a research tool.
You may want to check out more software, such as f x -Viewer, Trachtenberg Speed Math or Archimedes Geo3D, which might be similar to ecgsim.