An electrical engineering tool for GNOME.
http://www.dtek.chalmers.se/~d4hult/oregano/
All you need to work with wire.
http://www.wssh.net/~wattsup/audio/wire_xl.xls
Windows program to calculate the best fit standard 0.1, 0.25, 0.5, and 1 % resistors.
http://margo.student.utwente.nl/el/cad-cam/winresis.zip
http://www.opamplabs.com/cfl.htm
basic electronics calculations like resitors, inductors, capacitance and RC constant time
http://www.cvs1.uklinux.net/calculators/
a simple command line utility that reads values from a Metex 4650CR or ME-11 digital multimeter using the serial interface.
http://home.pages.at/linux/
A simple DOS program that allows you to read reisitor color codings.
http://www.wssh.net/~wattsup/audio/ohm.zip
http://www.opamplabs.com/dbm-v-z.htm