Install Ruby on Rails in Windows —and Postgres, and Mongo, and Redis...

Googling "setting up rails on Windows", this is the second result, by @erikjansson

After spilling half a glass of water on my work Macbook Air, I set out to setup Rails on my PC once and for all. Having tried solutions like Nitrous.io to varying levels of success, I decided that noting would cut it like the real deal.

Windows 10 in your Macbook or iMac

You'll need an 8+GB pen drive  and about 15 minutes. All the data in OS X will remain untouched, no worries.

1. Download Windows 10 Technical Preview from here (you need to join the Insider program first) or directly from here.