Margin

A quiet text editor for the browser and the desktop. Documents are saved on your own device as you type; nothing is uploaded and there is no account. A sidebar lists your documents with search, and the first line of each is its title. Write, Split and Read views sit over a Markdown renderer written for the app, alongside focus mode, light and dark themes, three typefaces and adjustable text size and line width. Editing has find and replace, lists that continue on Enter, Tab to indent and the usual bold and italic shortcuts, with word count, reading time and cursor position in the status bar. It opens and saves .md, .markdown and .txt files, including by dragging one in. It is one React app in two shells: an installable web app that keeps working offline, and an Electron desktop app with native file dialogs and installers for Windows, macOS and Linux.

November 2026