What is the best IDE for development with CI

I use an online IDE (Cloud9). Almost everything is already installed, PHP, Apache... It works everywhere on every computer / OS with an internet connection, and premium accounts support collaborative developments. 

For nothing in the world I would come back to an installed IDE on my computers. 

For those who are interested, here is how to install CodeIgniter on a Cloud9 server :https://www.lucidar.me/en/codeigniter-3-1-9/install-codeigniter-on-ubuntu/

There is also Codeanywhere that seems great, but I didn't try.