Latest News

Latest release: 0.0.17
Source Windows Ubuntu osx
Latest development snapshot:
Windows tar.gz Ubuntu osx
03 July 2013 New implemenation of matrix calculations using Libeigen3. Files are in branch local_complex_20130624
03 July 2013 Added option for changing the home directory and other paths using QSettings (~/.qucs/qucsrc is now obsolete)
23 June 2013 Released qucs 0.0.17!
14 June 2013 Added BSIM 4.30 nMOS and pMOS models
20 May 2013 Added BSIM 3.34 nMOS and pMOS models
26 April 2013 Added beginnings of m-code transient solver interface.

Previous news items

What's Qucs?

Qucs stands for Quite Universal Circuit Simulator. So far Qucs is not yet finished, but it is already packed with features. Take a look at the screenshots to get a feel for what it can do.

Qucs is an integrated circuit simulator which means you are able to setup a circuit with a graphical user interface (GUI) and simulate the large-signal, small-signal and noise behaviour of the circuit. After that simulation has finished you can view the simulation results on a presentation page or window.

The Qucs GUI is well advanced and allows setting up schematics and presenting simulation results in various types of diagrams. DC, AC, S-parameter, noise and transient analysis is possible, mathematical equations and use of a subcircuit hierarchy (with parameterised subcircuits) are available. Qucs can also import existing SPICE models for use in your simulations.

While Qucs is well developed, we stil strive to improve the project, and will always welcome offers of help. Qucs doesn't just need help with programming, it also needs graphics, high quality example schematics, tutorials for the website and lots more.

Qucs comes with a huge array of components and models including HICUM, BSIM2, BSIM3, and soon BSIM6. It also provides many semiconductor based components and models such as OpAmps, Diodes, MOSFETs, PMOSFETs and many more. Some example schematics can be found here which demonstrate some of the abilities of Qucs, and many more examples are provided with the program.

Operating Systems

Qucs is currently developed under the GNU/Linux OS using the standard autotools with no special effort to support other operating systems. However Qucs is said to be successfully compiled and run on Windows, Solaris, NetBSD, FreeBSD, MacOS, and Cygwin... help is needed !


Qucs is released under the GPL license and so it is free for free programmers and users !


Qt® is a registered trademark of Digia.

SourceForge Logo
visitors since 2005/04/27
Support This Project