Project Summary
Step is an interactive physical simulator. It works like this: you place some bodies on the scene, add some forces, such as gravity or springs, then click "Simulate" and Step shows you how your scene will evolve according to the laws of physics. You can change every property of bodies and forces in your experiment (even during simulation) and see how this will change evolution of the experiment. With Step you can not only learn but feel how physics works!
In a Nutshell, Step...
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has a well established, mature codebase
maintained by a large development team
with stable Y-O-Y commits -
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took an estimated 6 years of effort (COCOMO model)
starting with its first commit in February, 2007
ending with its most recent commit 3 days ago
Quick Reference
GNU General Public License v2.0 or later
Permitted
Commercial Use
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Include Copyright
State Changes
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These details are provided for information only. No information here is legal advice and should not be used as such.
This Project has No vulnerabilities Reported Against it
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30 Day SummaryAug 11 2026 — Sep 10 2026
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12 Month SummarySep 10 2025 — Sep 10 2026
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