And if you're concerned about the security of your documents MyNotex does have the ability to encrypt your documents as well.
Few main features...
*. Import Tomboy and Gnote files.
*. Easily write letters, memos, idea, etc.
*. Write PDF files.
*. Copy HTML files/web pages directly from your web browser and save them as HTML.
*. Manage task-list, you know, getting things done "lists".
*. Share your notes with others.
*. Encrypt and add passwords to documents and many more...
So if you run Ubuntu or Debian GNU/Linux, then you can easily install MyNotex by downloading the appropriate package from here and simply double clicking on it.