Markdown Library ML-42
Reader, editor & live preview
Only for Mac
$12.99
Mac
A native macOS reader and editor for the markdown files already on your disk. Point ML-42 at any folder — a git repo, a docs directory, an Obsidian vault — and read, search, and edit across projects. No import, no database; files stay where they are.
Every AI assistant reads markdown and writes markdown. The context files that shape agent behavior, the specs that define what to build, the decision records, the artifacts agents produce — all markdown. Maintaining them well is one of the highest-leverage things you do in an AI workflow. ML-42 makes it feel less like editing config files and more like browsing a library.
DOCUMENT VIEW
Clean, navigable rendering — fast. Sidebar shows your project tree. The inspector gives you a table of contents and an on-device summary from Apple Intelligence. You're reading your library, not staring at syntax.
FOLDER OVERVIEW
Open any folder and see documents as cards with excerpts and modification dates. Click in, read, hit back. Forward/back history works across files and folders, just like a browser. Breadcrumbs and favorites throughout.
COMMAND PALETTE
Cmd+K searches every project at once, by filename and by content. Each hit shows its project and path — jump from a memory file in one repo to a draft in another without losing your place.
FAST PREVIEW & RAW EDITING
Files render instantly — headings, code, tables, front matter, all styled, no delay. Flip to raw with a keystroke and edit plain text at native speed. Switching back is instant.
ON-DEVICE SUMMARIES
Apple Intelligence generates a short summary per document, on-device. Nothing leaves your machine.
FILE WATCHING
When an AI agent or another editor changes a file, ML-42 detects it and reloads. What you see is what's on disk.
No database. No sync layer. No subscription. Nothing leaves your machine.
The format is the interface. ML-42 just makes it better to work with.
Requires macOS 26 or later. Apple Silicon and Intel.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
ML-42 now handles large projects and monorepos with ease — folders open and switch fast, and memory stays light even on big repositories.
- Build and dependency folders like node_modules are skipped by default, keeping the file tree and search clean.
- Navigate folders with the arrow keys, with larger, easier-to-hit expand controls.
- Quick Open (⌘K) and folder filtering use fuzzy matching to find any file in a few keystrokes.
- Faster full-text search that skips build folders.
- Document summaries match each document's language, with a new Summary language setting to choose your own.
- Projects select their root automatically when added or reopened.
The developer, Alexander Kohlhofer, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Field Bureau & Werkstatt LLC
- Size
- 2.4 MB
- Category
- Productivity
- Compatibility
Requires macOS 26.0 or later.
- Mac
Requires macOS 26.0 or later.
- Mac
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © Field Bureau + Werkstatt
