Indicator Stickynotes is a simple note application written in python and GTK3. It originally developed to work on Unity user interface and it has been tested on GNOME Shell, GNOME classic “fallback”, XFCE/Xubuntu, KDE/Kubuntu, MATE/Mint, and Cinnamon/Mint interfaces. Check installation instruction on Ubuntu 12.10 Quantal Quetzal and Ubuntu 12.04 LTS Precise Pangolin using PPA.
Indicator Stickynotes 0.4.0 brings capability to add multiple categories with different settings for each. such as color notes, text color, and choose one of these categories to become default, so, when you open any new note it opens with respect to the default category options. Also, it includes a lock/unlock icon for each note.
[How To]: Install Indicator Stickynotes on Ubuntu 12.10 Quantal Quetzal and Ubuntu 12.04 LTS Precise Pangolin using PPA
Run Terminal, then type,
sudo apt-get update
sudo apt-get install indicator-stickynotes
Some handy keyboard shortcuts
Indicator Stickynotes webpage.