Native macOS · No Electron · No Cloud

The Markdown Editor
with a Brain.

MEditor is a pure SwiftUI + AppKit Markdown editor for macOS, with a built-in AI Agent that can read, write, and refactor your documents — using real tool calls.

Download for macOS View on GitHub

MEditor — native macOS Markdown editor with workspace, outline and live preview

Everything you need

Built for writers who
think in Markdown.

Every feature — from live preview to workspace tools — is designed to stay out of your way and let you focus on writing.

Built-in AI Agent

Multi-turn reasoning loop. The Agent reads your document, calls tools, sees results, and keeps going until the task is done — all inline.

Real-time Preview

Editor and preview scroll in sync. Code blocks, Mermaid diagrams, and math rendered instantly as you type.

Rendered Markdown preview with tables and lists

Workspace Tools

List files, search across your vault, open tabs, run sandboxed shell commands — all accessible to the AI Agent.

Workspace sidebar with file list and document outline

Streaming Output

Responses appear word-by-word. Tool steps show inline with expand/collapse detail — you always know what the Agent is doing.

AI assistant with @mention file references and suggestions

Bring Your Own Key

9 provider presets out of the box — OpenAI, Anthropic, DeepSeek, Kimi, GLM, Qwen, OpenRouter, Groq, Ollama — plus a local Claude CLI fallback. Any OpenAI-compatible endpoint works.

Export & Beautify

Export to HTML, PDF, or 2× PNG in one click — or turn any document into a polished, themed page with built-in Beautify templates.

LAN Sharing

Built-in HTTP server with one-time token auth. Share your document over Wi-Fi instantly.

AI Agent

Your AI writes, refactors, and edits — with real tool calls.

MEditor ships with a full AI Agent, not just a chat panel. It reads your document, calls tools to patch specific sections, searches your workspace — and shows every step transparently.

Multi-turn reasoning loop that runs to completion
Document tools: read, write, patch, insert with precision
Workspace-confined writes & risk-graded shell commands — every risky action needs your approval
Visual Diff Review for AI-proposed changes before you accept
Inline rewrite, shorten & translate right in the editor
OpenAI & Anthropic SSE streaming, plus Claude CLI backend
Skill system — built-in + an extensible gallery

AI Agent panel with @mention references and context chip

Editor

A real editor. Not an afterthought.

Syntax highlighting for 40+ languages, bidirectional scroll sync with anti-loop protection, native find & replace with jump-to-line, and a fuzzy file finder (⌘P) — everything you'd expect from a desktop app.

Live Markdown preview with Mermaid diagram support
Todo inbox with calendar & week timeline views
Document templates for recurring note types
Drag-to-reorder tabs, close confirmation, reopen closed tab
GitHub Light, Nord, and Dracula themes
Session restore across launches — tabs, folder, selection

MEditor editor view with rendered Markdown, table and code block

The Markdown Editor with a Brain.

Built for writers whothink in Markdown.

Your AI writes, refactors, and edits — with real tool calls.

A real editor. Not an afterthought.

Start writing smarter today.

The Markdown Editor
with a Brain.

Built for writers who
think in Markdown.