1)   Resistor Values 2.1
Resistor Values is an electrical engineering program that will calculate the value of a 4 band resistor.

 2)   Electrist 1.21
The top-rated electronic & electrical engineering tool for Palm OS with the most advanced interface and hundreds of calculations. Only $20 USD - compare features and price with competing software.

 3)   R Decode 1.0
Ever wonder what the color bands on resistors mean? This program by WorkHorse Games decodes these bands for you. You can either enter the color bands and find out the value or you can enter the value and find out the color bands.