voodoopad.com
VoodooPad is a macOS application for writing notes and organizing information. It supports wiki links, collections, tags and search, and allows drag-and-drop of folders, PDFs, applications and URLs. Documents can be exported as PDF, ePub or HTML, shared through Dropbox, and encrypted per page or as a whole document. Version 5.4.0 requires macOS 10.12 or later.