Cogito app iconCogito
Cogito app icon

A quiet, beautiful, native app for your (and your agents’) Markdown files.

Built from the ground up for reading, editing, and browsing Markdown.

Cogito Markdown editor reading a document on macOS

Source & preview

Write raw Markdown, then flip to a rendered preview and back. Scroll position stays in sync.

iA Writer Quattro

The same typeface behind one of the most respected writing apps, bundled and tuned for comfortable reading.

Live syntax highlighting

Headings, bold, links, code, and more — all highlighted as you type. Syntax markers dim to keep content in focus.

Smart formatting

Toggle-aware bold, italic, and link shortcuts. Paste a URL onto selected text to wrap it as a link.

Line continuation

Press Return in a list, task, or blockquote and the structure continues. Empty items exit cleanly.

Interactive tasks

Click a checkbox in preview to toggle it — the change writes straight back to the source file.

Code blocks

Fenced code blocks render with syntax highlighting for 16+ languages, from Swift to TypeScript.

Dark mode

A warm, custom-tuned color palette for both light and dark — not just inverted system colors.

Folder-native browsing

Add any folder as a Location. Browse, create, rename, and organize files without leaving the app.

Live filesystem sync

External changes from git, the terminal, or other editors refresh instantly. No manual reload.

Adjustable text size

Scale everything proportionally — body text, headings, code, and column width move together.

Copy file paths

Quickly copy a note’s relative or absolute path from the context menu. Handy for linking across repos and docs.