Putty-On-Osx will allow you to install putty for : macOS Sierra v10.12 OS X El Capitan v10.11 OS X Yosemite v10.10 OS X Mavericks v10.9 #steps download the files based on your OS version , and sudo run it #Notice for those who dont have XQUARTZ , i will be downloaded but you will need to install it by yourself