OpenDMG
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open-markdown-lane for Mac

A local-first Markdown editor with live rendering, native macOS windows, and portable Markdown files.

By AniChikage. Free and open source, MIT licence.

Get it with OpenDMG View source on GitHub

open-markdown-lane at a glance

Version
0.25.0
Released
13 November 2026
Download size
7.1 MB
Works on
Apple silicon
Licence
MIT
Category
Utilities
Developer
AniChikage
GitHub stars
123

How to install open-markdown-lane on a Mac

  1. Get OpenDMG. It is a free app store for open source Mac apps. Download OpenDMG.
  2. Search for open-markdown-lane and press Get. OpenDMG downloads version 0.25.0 from AniChikage's own GitHub release.
  3. Open it. The download is checked against its SHA-256 fingerprint and its signature is checked on your Mac before it lands in Applications.

Updates to open-markdown-lane show up in OpenDMG and install with one button. No account is needed.

Prefer to do it by hand? The developer's file is on GitHub: Open-Markdown-Lane-0.25.0-arm64.dmg (7.1 MB).

What is new in open-markdown-lane 0.25.0

Open Markdown Lane 0.25.0 adds shared document views and bounded background editors.

This is an independent, unofficial project, unaffiliated with Typora. If you can afford it, please [buy Typora](https://store.typora.io/) and support its official developers.

## Changes

- **View → Split this document** opens the same Markdown in live/source or two rendered views. Both panes share edits, save state and undo/redo; carets, modes and scroll positions remain independent. Existing two-document splits are still available.
- Preserve legacy initial caret placement when a session has no view metadata; a new twin starts at the current document location.
- Restore both views, their modes/positions, active pane and geometry with unsaved text after a normal restart. Close either pane without closing the document. Scrolling is independent, not synchronized.
- Closing a shared document clears its split without rearranging unrelated tabs.
- Release background editor DOM using a bounded warm cache and idle expiry. Keep text and session undo/redo, and protect pending image imports and batch operations from eviction. Memory use still depends on document text, history and resources.
- Share one idle recovery snapshot for text and view changes to reduce background work on large files.
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