Org-mode
From Just Solve the File Format Problem
Org-mode is a multi-purpose plain-text system which is displayed and manipulated via an editing mode of the Emacs text editor.
Outside of Emacs, Org-mode files can be viewed as human-readable plain text.
It can be used for: structured note-taking, TO DO lists, project planning, authoring of "executable documents" that combine markup language (for example, LaTeX) with embedded executable code.
Identifiers
- File extension: .ORG (not to be confused with .org domain)