Our software library provides a free download of doubleConfig 0.0 for Mac. The file size of the latest setup package available for download is 10 KB. Our antivirus analysis shows that this Mac download is clean. The software lies within System Tools, more precisely General.
From the developer:
DoubleCommand is the most capable keyboard remapper I have found for OS X, but it's a pain to configure. So... here's a little script that configures it for you.
Requires tcl/tk - you can use TclTkAqua or any other Tcl/Tk implementation.
You may want to check out more software for Mac, such as MyBattery, MacSpoofer or FixPng Droplet, which might be similar to doubleConfig.