It needs to be installed and set up, but it has several shortcomings that make it a substandard choice for non-trivial projects.
- no code completion
- global settings - when programming multiple boards settings need to be changed before each upload
- poor code formatting
- poor code coloring
Stino is a plugin for Sublime Text 2 editor. It is simple to install and works more or less outofthebox.
Sublime Text 2 can be installed from http://www.sublimetext.com/2
Stino install instruction are localted here: https://sublime.wbond.net/installation#st2