While the original project was once the standard, development has branched into specialized versions:
This is the most active fork as of May 2026. It integrates popular SPICE engines like Ngspice and Xyce into the user-friendly Qucs interface.
The installation process varies slightly depending on whether you choose an installer or a portable version: Using an Installer (.exe) Install instructions for Ubuntu - Qucs - SourceForge download qucs for windows 10
Get the latest version (e.g., v26.1.1) from the official Qucs-S site .
A highly specialized, high-performance variant that includes advanced tools like electromagnetic (EM) field simulators and antenna analysis. While the original project was once the standard,
Available as a portable ZIP file on QucsStudio.de .
The classic version (v0.0.19) is stable but has not seen major updates since 2017. Download: Find it on the Qucs SourceForge repository . 2. Installation Guide for Windows 10 Download: Find it on the Qucs SourceForge repository
To download and install the on Windows 10 , you have three main options depending on your specific needs: the legacy Original Qucs , the SPICE-integrated Qucs-S , or the feature-rich QucsStudio . 1. Download Options for Windows 10