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QUCS
--------

QUCS is alright. It does verilog-a, I think it can load SPICE files, has a
decent parts library, enables parametric plotting of circuit parameters, can do
basic transmission line and PCB layout simulations, etc. I found "A Qucs
Tutorial for RF" helpful for getting started; the default tutorial is also
good.

On debian wheezy, install the following (some are probably not necessary, like
cmake):

    sudo aptitude install libxml-libxml-perl libgd-gd2-perl zlib1g zlib1g-dev libgd2-xpm-dev libxml2 libxml2-dev libxml-perl libqt4-dev libqt4-qt3support automake libtool gperf flex bison cmake

Then follow the build directions at
https://github.com/Qucs/qucs/wiki/Build-Linux. You don't need to set the
``--prefix``, but you do need ``--enable-maintainer-mode``. You probably want
to ``make -j8`` to build faster.

Within QUCS, one "gotcha" is that simulating only creates a simulation engine
and dataset; you then need to go to (or create) a data pane (seperate sheet
from the circuit schematic) to visualize the results.