FSNotes 2.5.2 | macOS | 10 mb FSNotes is a plain-text note manager for macOS, and is modern reinvention of notational velocity (nvALT) on steroids. Our application respects the following open formats: plain/text, Markdown, and RTF, and stores data in the file system. You can view, edit, and copy data in your favourite external editor, and see live results in FSNotes.