I'm a developer from Germany/Bavaria and created the alternative C64 emulator YACE64.
The development started just for fun with a 6502 emulator to improve my java experience - but now it's a full blown emulator written in C++ with some unique features.
If you are interested just visit my web page  or YACE64.
Also maybe I find some time to add more information to this wiki.
After study I worked for a computer gaming company, created security system for public transport, home automation systems and now I'm working for a big company, creating software for video surveillance.