Qucs S
Qucs S is a free, open-source science and GIS app for Windows, macOS and Linux. Qucs-S is a circuit simulation program with Qt-based GUI. It has 1,426 GitHub stars and is released under the GPL-2.0 license. Its source code is on GitHub at ra3xdh/qucs_s.
github.com/ra3xdh/qucs_s (opens in a new tab)
Data as of from the GitHub API; description from the project's repository. Report an error
About Qucs S
Qucs-S provides a fancy graphical user interface for a number of popular circuit simulation engines. Qucs-S contains instruments for schematic capture, visualization and provides differents passive and active components including device library. The following simulation kernels are supported:
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Is Qucs S free and open source?
Yes. Qucs S's source code is public on GitHub under the GPL-2.0 license, which is OSI-approved or FSF-free, so you can use, copy and change it for free.
How do I install Qucs S?
Download the installer for Windows, macOS and Linux from its GitHub Releases page (latest: 26.1.1) or the project website.
Is Qucs S still maintained?
The repository's most recent commit was on Oct 28, 2026. appsgit only lists apps whose repository had a commit in the last six months.