AppSoftware Journals is described as 'Lightweight notes and publishing, anywhere. Journals brings note taking, private secure journalling and public blogging all into one place. Edit your notes in markdown organise entries in a tree structure' and is an app in the Photos & Graphics category. There are more than 100 alternatives to AppSoftware Journals for a variety of platforms, including Windows, Mac, Android, iPhone and Online / Web-based. The best alternative is Joplin. It's not free, so if you're looking for a free alternative, you could try Standard Notes or Notion. Other great apps like AppSoftware Journals are Google Keep (Free), Microsoft OneNote (Freemium), Evernote (Freemium) and Simplenote (Free, Open Source).
Joplin is a free, open source note taking and to-do application, which can handle a large number of notes organised into notebooks. The notes are searchable, can be copied, tagged and modified either from the applications directly or from your own text editor.
With so many tools, it's hard to keep everyone on the same page. Notion is a new tool that unifies them all. It's like Google Docs, but everything is organized and discoverable by your team. Real collaboration in real-time.