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1 alternative

Best open-source alternatives to Ansys STK (2026)

Looking for a free, open-source alternative to Ansys STK? These 1 projects can replace it. Each one passed our quality screening and is explained in plain words, so you can compare stars, license and maintenance at a glance.

Quick comparison

ProjectStarsLicenseLast commit
thkruz/keeptrack.space★ 1.6KAGPL-3.06 hours ago

FAQ

Is there a free, open-source alternative to Ansys STK?
Yes. The most popular open-source alternatives to Ansys STK on Repolode are keeptrack.space.
Which Ansys STK alternative should I choose?
keeptrack.space has the most GitHub stars and is released under AGPL-3.0. Compare the license and last commit of each option in the table above before choosing.

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