From Concentrate Software recently released Paperclip 1.3, the latest version of their notes utility for Mac OS X Leopard. Paperclip isn't just any notes application, it allows users to attach persistent, stickies-style notes to any document.

Paperclip's notes offer full text support. You can change the font and format, drag and drop images, movies, and other media, even insert images. Since Paperclip's notes are document-specific, they will always be available whenever you edit annotated files. Paperclip also provides an attractive Note Viewer that lets you view, search, edit, and manage all of your notes.

Paperclip 1.3 is available for $14.95 USD. Registered 1.x customers may upgrade for free. A full featured, Leopard only demo is available for download.

I love the idea of this application, though I must admit that most of the applications I use (Photoshop, InDesign, MS Word, etc..) already have a built-in notes feature. Still, for many users, this could be a very handy utility.