Easy Notes 

Easy Notes is handy and intuitive tool targeting four areas: Tasks, Note Tree (a technology to store your notes in the tree structure and to have them hierarchically sorted), paper sticky notes replacement and calendar replacement.
notes sticky desktop note calendar diary tree task easy utility program shareware windows

Simple Notes Organizer 

This program allows you to attach post-it like notes to your Windows desktop. You can use individual settings for each note (color, font, opaque).
notes organizer manager