Alfons Schmid has released Notebooks for Mac 2.0 (https://www.notebooksapp.com/mac/), an upgrade of his productivity app that combines text processing with document and task management.
Version 2.0 is now a native Mac app. It also sports an improved user interface and adds many new features like checklists, tables, tabbed windows, breadcrumbing navigation or methods to compile documents and create eBook.
Notebooks for Mac 2.0 requires macOS 10.11 or higher and costs $35.99. A demo is available for download.