Clearly. A markdown editor and knowledge base for Mac.

Write with syntax highlighting. Link your thoughts. Search everything. Preview beautifully. Free and open source.

Requires macOS Sonoma or later.

Writing

Syntax Highlighting
Headings, bold, italic, links, code blocks, tables, highlighted as you type.
Format Shortcuts
⌘B bold, ⌘I italic, ⌘K links.
Extended Markdown
Highlights, superscript, subscript, emoji shortcodes, table of contents.
Scratchpad
Menubar scratch pad with a global hotkey.

Knowledge

Wiki-links
Link documents with [[wiki-links]]. Type [[ to autocomplete.
Backlinks
Linked and unlinked mentions with one-click linking.
Tags
Organize with #tags. Browse in the sidebar.
Global Search
Full-text search across every document, ranked by relevance.
Document Outline
Navigate headings. Click to jump.
File Explorer
Browse folders, bookmark locations, create and rename files.

Preview

GFM Rendering
Tables, task lists, footnotes, strikethrough.
KaTeX Math
Inline and block equations.
Mermaid Diagrams
Flowcharts, sequence diagrams from code blocks.
Code Blocks
27+ languages, line numbers, diff highlighting, one-click copy.
Callouts
NOTE, TIP, WARNING, and 15+ types. Foldable.
Interactive
Toggle checkboxes, zoom images, hover footnotes, double-click to source.

Integration

AI / MCP Server
Exposes your vault to AI agents for search and retrieval.
QuickLook
Preview .md files in Finder with Space.
PDF Export
Export or print. Page breaks handled.
Copy Formats
Markdown, HTML, or rich text.