If you can't get enough CLI while surfing the net, here are a few sites which utilize a Unix like Command Line Interface.

https://pigshell.com/
Access your social network data via CLI.

http://duckduckgo.com/tty/
CLI Search.

http://goosh.org/
Another CLI search site.

Know of any others?

It's really cool.
However, I don't understand why you posted it in the offtopic section.

Nice 29a, you found some useful websites!

Thanks.

These look awesome !

I posted in "Off Topic" because there is no "Web" section, and these sites aren't really OS specific.