I have been using GreenLight 8200 to program my 8200 MK3 for some time now.
http://home.no.net/helgeww/GreenLight/
It hasn't been upgraded for a while, but neither has any of the other software for the 8200.
It seems to work fine for me. Also available is Ar86ctrl which works with both the 8200 and 8600.
http://home.snafu.de/kbo/
There is also something called JAOR, but don't bother.
Mark