For all the nostalgic guys who loved windows 3.1 or the younger ones who wants to try it out, here is your chance. Check out Michael Vincent's Windows 3.1 emulator at michaelv.org.
Michael's website is a way to look back into the days of Windows 3.1 without having to install a thing. It's a site that emulates the operating system, allowing you to explore it as if you had it installed on your own computer. However, there are a notable differences. The browser isn't really the same as it was back then, you don't actually get to experience the boot up process, and Windows 3.1 didn't come with links to all of Michael's websites. Still, it's a great little emulator.
Source : Neowin