NotesTab is an app that lets you write notes, just like Notes, but extends the functionality to allow sharing and some other cool features. NotesTab installs easily and sits in your menu bar. Whenever you need to scribble a note you just click on the icon and a notebook opens. As you type a note, it is saved immediately, removing the need to hit a Save button.
NotesTab has quite a few configurable options, such as the ability to customize hot keys and always be visible and on top of other apps. This lets you use it as a big copy and paste buffer. You can time stamp each note, and search through your notes easily. The Share feature is nice: you can send the contents of a note to your e-mail client with a single click, then send the contents of your note to anyone else as the body of an e-mail. The NotesTab interface is clean and easy to work with.
Once you get used to NotesTab we doubt you'll return to Notes. Since NotesTab is free there's no reason not to install and use it. There's no paid upgrade version: what you get is the entire app, for free. This, and the features built in, make NotesTab a great app.