It is very much possible to keep a Notezilla sticky note always on top of other apps using the 'Stay on top' option. This makes it very convenient when working with other websites, programs etc. so that you can copy information back and forth from another window easily.
Watch this video for more clarity:
To make a Notezilla sticky note stay always on top of all other program windows :
Click on the Pin icon in the note toolbar. Only desktop notes can be made to stay on top.
Faster way to making a note stay on top is to use the shortcut key Ctrl+Q from the sticky note.