Keyboard layouts

Hi.

Does anyone know of a comprehensive list of keyboard layouts?  I could
start by getting those supported by recent versions of Windows, OS X and
X11, but if someone has already compiled such a list that’d be better.

I’d also like to know about keys available on mobile devices too, if
anyone knows of such a list.

Thanks,

Cameron

-- 
Cameron McCormack ≝ http://mcc.id.au/