Simulation software open source

OpenSIMPLY is open-source simulation software built for efficient and accurate system modeling.

The full source code is available under the GNU General Public License GPLv3, so you can study it, modify it, extend it, or integrate it into your own projects without restrictions.

It is compatible with Delphi and Free Pascal compilers.

The open-source Lazarus IDE provides a comfortable environment for working with the code and building your models.

OpenSIMPLY uses the discrete-event simulation approach and keeps system resource usage very low.

Thanks to its efficient design, it achieves very high simulation speed — perfect for serious scientific research with large numbers of events.

At the same time, the code is clear and well-structured, which makes OpenSIMPLY an excellent tool for educational purposes and teaching simulation concepts.

Whether for research experiments or classroom use, it offers reliability, speed, and full openness.