I don't know what is the best, so I tried to using all of that as a free account.
This rank is determined by 30 minute at using all below 5 at a time.
1. Cloud9 - https://www.c9.io/
In my opinion, this is the best cloud based IDE.
Fast loading, fast interactive code tree, nice ui/ux, beautiful color code.
Github support. ( New project by clone github )
Perfect.
2. Codenvy - https://codenvy.com/
Codenvy is pretty nice. It looks like a real IDE should be installed in my computer.
If you want natural look&feel like local, this could be a good solution.
3. Koding - https://www.koding.com/
Very simple IDE UI.
Sometimes chrome does not react. (maybe this raise some trouble)
I can see a code in a wide window.
4. NITROUS pro - https://www.nitrous.io/
Only NITROUS does not support join by external account. ( github, google... )
NITROUS needs my phone number to use free version. ( I don't know why )
After I joined, it takes very long time to set environment.
Interactive IDE is nice and fast but this is too simple for me. ( not enough UI )
5. Codeanywhere - https://codeanywhere.net/
Codeanywhere support mobile environment to develop.
Very slow code tree, slow to open a file.
There is a minimap scroll-bar on right side of code.
But codeanywhere support SSH, SFTP, FTP, Google Drive, Dropbox.
If you want open IDE on your private server or data cloud, you can use this.
