If you just want to adjust your keyboard layout, MacOS has historically a rather flexible and adjustable keyboard layout and key binding systems. For custom ke

If you just want to adjust your keyboard layout, MacOS has historically a rather flexible and adjustable keyboard layout and key binding systems. For custom keyboard layouts there is the app Ukulele which is slightly more easier than writing the XML files per hand: https://software.sil.org/ukelele/ https://software.sil.org/ukelele/ https://web.archive.org/web/20080509183706/http://developer.apple.com/technotes/tn2002/tn2056.html https://web.archive.org/web/20080509183706/http://developer.... For more complicated key bindings the Cocoa Text System is rather nice; you can even create little macros: https://web.archive.org/web/20061127104844/http://www.hcs.harvard.edu/~jrus/Site/cocoa-text.html https://web.archive.org/web/20061127104844/http://www.hcs.ha... (Disclaimer: I last tested these things 2005ish and Apple is only moving forward. Still I think those systems are still there.)