OCEmulator
The cross-platform emulator I've been working on is finally usable (barely). At the current state, it has a screen, filesystem, EEPROM, GPU, and keyboard attached to a computer. It doesn't have an OpenOS installer yet, but you can copy the files to ~/.ocemulator/filesystem/TheAddress. I don't know where the files are on Windows, but they're somewhere.
It will run OpenOS and the programs with it fine.
Github: https://github.com/alakazard12/OCEmulator-Qt
I'll add more information when it's in a more usable state.