QOwnNotes

Program: QOwnNotes

License: Open source (GPL)

Description: QOwnNotes is the open source (GPL) plain-text file notepad with markdown support and todo list manager for GNU/Linux, Mac OS X and Windows by Patrizio Bekerle (pbek on GitHub and IRC), that (optionally) works together with the notes application of ownCloud or Nextcloud.

Website: http://www.qownnotes.org/

Other: It seems it is portable, but it would be nice to have it in PortableApps.com Format. (Developer wrote: "Use QOwnNotesPortable.bat to run QOwnNotes in portable mode where everything (including your notes) will only be stored in your QOwnNotes folder.")