Screenshot of step.png
A simulation of a gasoline system
Original author(s)Vladimir Kuznetsov
Carsten Niehaus
Aliona Kuznetsova
Stable release
20.04.2[1] / 11 June 2020; 2 years ago (11 June 2020)
Written inC++
Operating systemLinux
Available inEnglish
LicenseGNU General Public License version 2

Step is an open source two-dimensional physics simulation engine that is included in the KDE SC as a part of KDE Education Project.[2] It includes StepCore, a physical simulation library.


The program was developed by Vladimir Kuznetsov and introduced in February 2007.[3] It was released along with KDE 4.1.


The program is licensed under the terms of GNU General Public License, making it free software.[2]


Step is based on bodies and forces placed by the user:

The program also features springs and soft bodies.

Step allows reverting after simulation, so the user can modify the bodies and forces and see how the outcome of the simulation is affected. All the bodies and forces can also be modified in real time.

The software allows users to add graphs and meters and configure them to any property of any body. This allows, for example, graphing speed or acceleration against time.


  1. ^ "Release 20.04.2". 11 June 2020. Retrieved 17 June 2020.
  2. ^ a b "The KDE Education Project: Step". Retrieved August 22, 2009.
  3. ^ Allen, Danny (February 4, 2007). "This Week..." KDE Commit-Digest (44). Retrieved August 22, 2009.