KeyEdit is a simple GEM utility to edit and create FreeMiNT keyboard layouts. Needs FreeMiNT >= 1.16 and XaAES or N.AES. Might also work with MyAES, but this is untested.
KeyEdit is especially suited for ARAnyM users, as there's a huge variety in keyboards for PC's and Macs and many of them does not match the pre-defined keyboard tables in TOS/FreeMiNT. KeyEdit can also create deadkeys and edit the "AltGr" keyboard tables available in ARAnyM and on the Milan.
KeyEdit is freeware.