nb

nb creates notes in text-based formats like Markdown, Org, LaTeX, and AsciiDoc, can work with files in any format, can import and export notes to many document formats, and can create private, password-protected encrypted notes and bookmarks. With nb, you can write notes using Vim, Emacs, VS Code, Sublime Text, and any other text editor you like, as well as terminal and GUI web browsers. nb works in any standard Linux / Unix environment, including macOS and Windows via WSL, MSYS, and Cygwin. Optional dependencies can be installed to enhance functionality, but nb works great without them.