This plugin gives you a 1 page note for the administrator or view/edit access to a role.
This plugin gives the administrator a one page note to save notes for the site. For instance, I keep track of custom colors used on my sites and make quick little to-do lists. You can keep track of code snipits as well.
You can also set permission to edit/view contents in the editor with respect to logged user role.
Supports multiple languages.