Notebooks is a writing app, a text and markdown editor, your personal Wiki and Zettelkasten, a file organizer, task manager, PDF and eBook creator and more. This may sound like a lot, but consider you have a few text fragments, randomly created, which you want to combine into a chapter of a book and saved as PDF or eBook; or a quick note sparks off an idea, generates a couple of tasks, each of which requires you to organize further research material; or you have business related documents which need to be separated from private diaries, records and files. – With Notebooks you handle these jobs easily without switching apps, and while remaining focussed and creative.