We are actively working on a Windows port which is being targeted for the 2.0 release. Here is an early screenshot - http://tinyurl.com/32y7cz
There are quite a few "feature requests" for GNUSim8085. While most of them are definitely worth implementing, we got held up in our "day jobs" so far. This project is still active and I'm happy to announce that GNUSim8085 2.0 will have many of those features implemented in addition to Windows support! Sorry for not giving enough attention so far.
PS: If any of you is a Mac developer, this is the right time to contribute a Mac build.