Known users listed in parenthesis. See also ?EducationElectronics and ?EduXoscope.
Electronics tools already packaged in Debian
[http://packages.qa.debian.org/a/avrdude.html avrdude] [http://www.bsdhome.com/avrdude/ upstream]
[http://packages.qa.debian.org/e/electric.html electric] [http://www.staticfreesoft.com/ upstream]
[http://packages.qa.debian.org/g/gcc-avr.html gcc-avr] [http://www.avrfreaks.net/index.php?module=FreaksTools&func=viewItem&item_id=145 upstream]
[http://packages.qa.debian.org/k/kicad.html kicad] [http://www.lis.inpg.fr/realise_au_lis/kicad/ upstream]
[http://packages.qa.debian.org/l/linsmith.html linsmith] [http://linsmith.sourceforge.net/ upstream]
[http://packages.qa.debian.org/q/qantenna.html qantenna] [http://sourceforge.net/projects/qantenna upstream]
[http://packages.qa.debian.org/q/qucs.html qucs] [http://qucs.sourceforge.net/ upstream]
[http://packages.qa.debian.org/u/uisp.html uisp] [http://www.nongnu.org/uisp/ upstream]
[http://packages.qa.debian.org/w/wcalc.html wcalc] [http://wcalc.sourceforge.net/ upstream]
Electronics tools that could be considered for inclusion in Debian
gaut [http://web.univ-ubs.fr/gaut/ upstream] High-Level Synthesis tool From C to RTL
simted [http://www.simted.org/main/ upstream]