Yace64 is a new emulator for c64 with special features. Indeed it tries to transform its video game or however graphic in 3D to be compatible with virtual reality. Sort of software from Tron :-).
International Karate Ultimate V1.1 is a remastered version of IK+ for Commodore 64. It is still in beta but playable !
This is Commodore 64 code and memory debugger that works in real time. It is quick prototyping tool where you can play with Commodore 64 machine and its internals.
DefleMask is a cross-platform tracker (runs on Windows, Mac OS X and Linux) for producing music for many soundchips and old school game-consoles/computers.