The results may be accurate if you refrain from using any tools, but who programs that way these days? I've had Esc-/ bound to dabbrev-expand in emacs for the past decade.

I think to really get a good idea of the actual keystroke frequency you need to find a sample of the more prolific programmers in each language and ask them to use a keylogger.

Unfortunately, it doesn't take into account what IDE was used to write that code. Do I use Tab in Visual Studio 2005? Nope, all that formatting is done for me.

On Emacs heatmap my control key would blind me...

Make Caps-Lock an additional Control. You never use Caps-Lock anyway, do you?

This is quite cool, but would be even better if the opacity of the key matched the opacity of the overlays on the keys.

I know I got lazy! You can certainly edit the utilitie's code if it bothers you too much.

Someone else also suggested I use a color gradient. I can't figure out how though.

When I posted this, I didn't realize it was a utilitymill script. I just thought you had done it and posted the results. It's neat though. Thanks.

Cool.

As for the physical heatmap, I'm showing wear on my control key and "e" key.

nice, zero wear on the backspace key in all of those languages.

sarcasm FTW