Mac OS X Jaguar 10.2 may have been released all the way back in 2002, but thanks to the InfiniteMac project, you can also run Mac OS X Jaguar on your modern Mac right now with just a web browser. Sure you might even have an old dusty Mac laying around in a closet that can run Jaguar, but if you’re just looking to play around with two-decade old operating system, opening a web browser is quite a bit easier, and that’s really all there is to it.