GitJournal is described as 'Manage your Notes from any Git Repo' and is a Note-taking App in the Office & Productivity category. There are more than 100 alternatives to GitJournal for a variety of platforms, including Windows, Android, Mac, Online / Web-based and iPhone. The best alternative is Joplin. It's not free, so if you're looking for a free alternative, you could try Standard Notes or Google Keep. Other great apps like GitJournal are Microsoft OneNote (Freemium), Evernote (Freemium), Simplenote (Free, Open Source) and Zim (Free, Open Source).
Notebook PEAs - encryption of notes. Protects your private notes with a password. The text is never stored unencrypted on your disk (until you explicitly decide to do that). The used cryptographic primitives are currently considered as safe as possible.
File system notes is modern notes manager on steroids for macOS and iOS. Application respects open formats: plain/text, markdown, rtf, and stores data in file system. You can view, edit, copy data in favourite external editor and see live results in FSNotes.
NoteAway is the simplest, most convenient way to take quick notes on OS X. NoteAway has lots of powerful features for free, like iCloud syncing, rich text, attachments, simple import/export, and a variety of customizable options.
Infolio is a Digital Workplace for Team Collaboration that allows you to easily create visual workspaces, add all kinds of content (documents, tasks, notes, web links, data), organize it the way you like, share it and collaborate with your team members.
This program is a structured notetaking application based on GTK+ 3. Write your notes in instantly-formatted Markdown, organise them in a tree of folders that can be instantly navigated from within the program, and add hand-drawn notes by mouse, touchscreen or digitiser.