PNotes is one of the free virtual desktop notes for Windows which allows user to create notes that stick on desktop. The PNotes has been featured with several options for users to customize the notes such as transparency, background colors, skinless, fonts and etc.

Download PNotes here.

Code:
http://sourceforge.net/projects/pnotes/files/PNotes/4.7.0/PNotes_4_7_102.zip/download