x86 emulator in java
I’ve always thought system emulators are really cool, but this one takes the cake for me at the moment. JPC is a full x86 emulator written entirely in Java, and it actually runs at a pretty good speed. Very impressive. If you’ve been wanting to play with old DOS games you haven’t seen in a decade or more, here’s your chance!
If you’re more interested in a native-code x86 emulator, DOSBox is always good, but it takes a little bit more fiddling to get going.