Does what it says, and the added touch of being able to edit the URLs and even throw in a script as the action is sweet (and really only limits what can be done to short-scripting abilities). A couple of issues with the 1.1 release that were corrected by the programmer within 2 days of the first email being sent.

And for someone to rate it low because of an issue they don't even contact the programmer about should be blocked from being able to write reviews! (it took using a brand new user account on the programmer's computer to replicate my issue, so he does what it takes to fix the problem if you give him enough details)

Or you could just use Witch by the same author as Butler. It's free, and doesn't use any screen real estate. There are six different choices for what you can see based on all or front app, and whether or not the window is minimized. It's prefpane takes any key combination. And I'm not associated with either of these programs in any way other than using them...

I am having an issue with this version that I have contacted the programmer about. No matter what the preference pane (or even the preference file) have selected as the mailto: destination, it always tries to send mail via Yahoo! mail. I really hope this gets fixed as this is the exact program I've been waiting ages for!