Mkgmap Gui 1.1
Mkgmap Java based interface
There are lots of other things that mkgmap can do too, including complicated style files and other configuration options, but these two are the functions which I use most.
The Mkgmap tool works great, but it's command line only, so you have to remember the command line switches and if you can't remember them you have to look in the help file. And you can't make a simple shortcut to it because all the filenames have to go in the command.
So what you see here on this page is just a front-end to Mkgmap, it's just another way to call it. You still need to download a copy of Mkgmap separately from this Gui program.