How to install stunnel on OS X Mountain Lion?

I currently bought a Mac and I'm a noob :). I used to connect to my server using stunnel on Windows and Ubuntu. I'm also a noob in networking. I check website download section, and there's no Mac version, but in users-community mailing list I see some posts about running it under macOS. But they didn't help to figure out what should I do. So anyone can help me install stunnel on OS X Mountain Lion (10.8.2), or tell me is there any alternative app?