Any productivity tip for using OS X with only one arm, like Windows its sticky key? Google mostly returns Apple's accessibility API and other programming resources.

But I'd want to know, for example, what is Mac OS X version 10.7.4 equivalent of 'sticky key' in Windows.

Any other productivity tip for using OS X with only one arm?
In System Preferences, click Universal Access then Keyboard:

You'll find the options for sticky keys in there.