resisto.rs
I never have a color chart handy when I need to identify a resistor.

So I built a little web-app. Fast loading, simple, mobile friendly, and to the point.
Type in an ohm value, and it shows the color codes for 4 band, 5 band, and surface mount components.

Try it!
In case you’re wondering,
.rs
is the ccTLD for Serbia.
This was tricky to register.
Code
Open source, of course.