What ColaMD is
ColaMD is a free, open-source Markdown editor whose official tagline is “Writing should be this simple.” It is built by Cola.app and maintained by orange2ai, with source code under the MIT license in the GitHub repository for macOS, Windows, and Linux. Its distinguishing idea is putting “a human writing” and “an AI agent editing files” into the same editor.
Usage and boundaries
ColaMD focuses on true WYSIWYG editing without a split-pane preview, alongside a source mode, a file browser, and an outline. The officially described core mechanism is live sync: “when the file changes on disk — whether by an AI agent, a script or another editor — the editor updates right away,” and files created by an agent appear automatically. This makes it a natural interface for human-agent Markdown collaboration: the agent edits the file, the person reads and revises.
Features also include 12 themes, task lists, highlights, KaTeX formulas, Mermaid diagrams, PDF/HTML/Word export, and VS Code integration. Downloads go through GitHub Releases (macOS dmg, Windows installer and no-install zip, Linux AppImage/deb). One caution: searching for “colamd” often surfaces the same-named COLAMD sparse-matrix ordering algorithm used in tools like MATLAB, which is unrelated to this editor.
Discussion in the show
ColaMD is directly tied to Orange, one of the show’s hosts, who discusses it as its developer. In Weekly #002’s chapter “Blender 与代码：给模型合适的工具” (Blender and code: giving models the right tools), he described how models differ when testing ColaMD: per the Chinese transcript, earlier models would spin up an Electron build to test, while DeepSeek Flash sometimes finishes testing without ever launching the interface. In the same episode’s chapter “能力够用之后，测试与交付成为瓶颈” (Once capability suffices, testing and delivery become the bottleneck), he said the iOS development build of ColaMD simply lives in the repository — anyone who wants it can install it. These are the developer’s own statements on the show; project details follow the official repository.
Frequently asked questions
What is ColaMD?
A free, open-source WYSIWYG Markdown editor whose signature feature is live-syncing external changes so people and AI agents can edit files together; it shares a name with, but is unrelated to, the COLAMD ordering algorithm in MATLAB and similar tools. See colamd.com.
Is ColaMD free, and what is the license?
The official materials say “free forever,” released under the MIT license with source code on GitHub.
How do I download ColaMD?
Installers for all three platforms are published on the GitHub Releases page: macOS (Apple Silicon and Intel), Windows (installer and a no-install zip), and Linux (AppImage and deb).
How does ColaMD relate to AI agents?
The editor always shows the newest on-disk content: changes by agents, scripts, or other editors appear immediately, and files created by an agent show up automatically — the official framing is “no matter who writes the file, the editor always shows the newest content.”