Erlang TCP server based on ranch

Hi, All.  :)

I was looking for  Erlang TCP server that must be non-blocking and fast, OTP-enabled and easy to use. I was reading many documentation on English and Russian languages. I found product called 'ranch'.
Do you know web server 'cowboy' ? Do you like it ? I'm using it. I think it is one of the best of web servers written on Erlang.  Ranch was a part of cowboy. Now it's a dedicated product.
Please RTFM and examples on original site.