What is PrettyMD used for?

PrettyMD is a Mac and Windows app for reading the Markdown files AI coding agents write, with comments your agent can read and highlights of what changed. It is a good fit for reviewing plans and specs written by AI agents, and giving feedback to an agent directly on a document.

How much does PrettyMD cost?

Paid plans for PrettyMD start at $19 as a one-time payment, and there is no free plan. A free trial is available.

Is PrettyMD open source?

No. PrettyMD is proprietary (closed-source) software. In the Developer Tools category, open-source options include Notepad++, GitHub Desktop and massCode.

What are some alternatives to PrettyMD?

PrettyMD competes with Typora, Obsidian and iA Writer.

PrettyMD: features, pricing and alternatives

About PrettyMD

PrettyMD is a desktop Markdown viewer built for people who work with AI coding agents such as Claude Code, Codex and Cursor. It renders the specs, plans, skills and agent files those tools generate, so they are easier to read than raw text in an editor or a notes app.

You point it at a file or a folder and it lists only the .md files inside, fully rendered, including Mermaid diagrams and code. You can highlight a line and leave a comment that your agent picks up, replies to and acts on, and the app highlights what changed since you last looked, so you read only the new lines.

Reading aids include a sidebar, an outline, tabs, search, light and dark themes, focus mode and keyboard shortcuts, and it works fully offline. It costs $19 once with free updates, and a 7-day free trial needs no credit card.

Key features

Renders folders of Markdown files with Mermaid diagrams
Line comments that your AI agent reads
Highlights changes since you last viewed
Outline, tabs, search and focus mode
Light and dark themes
Fully offline on Mac and Windows

Good fit for

Reviewing plans and specs written by AI agents
Giving feedback to an agent directly on a document

Tags: markdown; desktop-app; ai-agents; viewer; developer-tools; mac; windows

PrettyMD: questions and answers

What is PrettyMD used for?: PrettyMD is a Mac and Windows app for reading the Markdown files AI coding agents write, with comments your agent can read and highlights of what changed. It is a good fit for reviewing plans and specs written by AI agents, and giving feedback to an agent directly on a document.
How much does PrettyMD cost?: Paid plans for PrettyMD start at $19 as a one-time payment, and there is no free plan. A free trial is available.
Is PrettyMD open source?: No. PrettyMD is proprietary (closed-source) software. In the Developer Tools category, open-source options include Notepad++, GitHub Desktop and massCode.
What are some alternatives to PrettyMD?: PrettyMD competes with Typora, Obsidian and iA Writer.