.markdown file: how to open it on Windows

54 Windows apps register the .markdown extension. Install one of them to open the file with a double-click.

About the format

Format: Markdown document
MIME type: text/markdown
PRONOM identifier: fmt/1149

Format data: freedesktop.org shared-mime-info and PRONOM (The National Archives, UK).

calibre
calibre is the one stop solution to all your e-book needs.

Open source 9.17.0 1.5M ↓ ★ 26.2K
RStudio
RStudio is an integrated development environment (IDE) for R.

Open source 2026.10.0+233 705.1K ↓ ★ 5.1K
Zettlr
Your one-stop publication workbench

Open source 4.8.0 37K ↓ ★ 13.8K
Markdown Monster
The Markdown Editor for Windows

Proprietary 4.5.8.0 202.9K ↓ ★ 1.7K
MarkText
A simple and elegant Markdown editor focused on speed and usability.

Open source 0.23.0 28.2K ↓ ★ 63K
Notepad3
Notepad like text editor based on the Scintilla source code.

Free 7.26.602.1 84.4K ↓ ★ 6.7K
Notion
A new tool that blends your everyday work apps into one. It's the all-in-one workspace for you and your team.

Proprietary 7.40.1 461.4K ↓
Typora
A markdown editor, markdown reader.

Proprietary 1.14.10 120.1K ↓
Kiro
An agentic IDE that helps you do your best work with features such as specs, steering, and hooks.

Proprietary 1.4.26 13K ↓
Windsurf
The most powerful AI IDE

Proprietary 2.3.15 12.3K ↓
Void
The open source AI code editor.

Open source 1.99.30044 ★ 28.7K
Antigravity IDE
Experience liftoffwith the next-generation IDE

Proprietary 2.5.5 1.2K ↓
Phoenix Code
The text editor designed to make coding as simple and fun as playing a video game

Open source 5.2.5 64 ↓ ★ 106
Positron
A next-generation data science IDE

Proprietary 2026.10.1 ★ 4.3K
flymd
A highly responsive and extremely low-resource Markdown editor and PDF reader tool that supports WYSIWYG, WebDAV synchronization, automatic image uploads, AI-assisted writing, and plugins.

Proprietary 1.4.4 ★ 895
Aide
The open-source AI-native IDE

Open source 1.96.4.25031 ★ 2.2K
Nimbalyst
An open-source visual workspace for building with Claude Code and Codex.

Open source 0.79.1 ★ 2K
Ox editor
The simple but flexible text editor

Open source 0.7.7 ★ 3.7K
Okular
The Universal Document Viewer

Open source 26.08.1
TheiaIDE
A modern and open IDE for cloud and desktop.

Open source 1.76.0 ★ 612
Brackets
An open source code editor for the web, written in JavaScript, HTML and CSS.

Open source 2.2.1 ★ 1.5K
DatasetViewer
A modern, high-performance dataset viewer built with Tauri, React, and TypeScript. Designed to handle massive datasets from multiple sources with efficient streaming for large files (100GB+) and lightning-fast search capabilities.

Free 1.6.4 ★ 1.1K
Nomo
A WYSIWYG, real-time rendering, and distraction-free Markdown editor

Proprietary 0.6.2 ★ 313
mdview
Standalone Markdown Viewer

Open source 4.0.2 ★ 147
Foliole
An approachable incremental reading app

Open source 0.7.16 ★ 142
Oryx
Fast editor for markdown and code, reader for ebooks and comics

Open source 1.2.2 ★ 159
InkNote
A local-first Markdown editor that feels like writing in a document

Open source 0.2.15 ★ 88
Cursor
The AI Code Editor

Proprietary 3.20.14
Comate
Intelligent coding capabilities throughout the entire development process along with enhanced multimodal abilities. Install now to start a seamless and natural intelligent development experience.

Proprietary 3.11.5
Trae CN
An adaptive AI IDE that transforms how you work, collaborating with you to run faster.

Proprietary 3.4.4
Trae
An adaptive AI IDE that transforms how you work, collaborating with you to run faster.

Proprietary 3.6.4
Penna Markdown
A modern, high-performance cross-platform Markdown desktop editor.

Open source 0.1.5 ★ 7
MDViewer+ for Windows
Offline Markdown viewer and editor for Windows

Open source 2.0.1 ★ 5
FastPad
Ultra fast note taking app.

Open source 0.4.4 ★ 2
Devin
Manage fleets of local and cloud agents from one surface. Plan, delegate, review, and ship without leaving your editor.

Proprietary 3.10.48
Cortex Code
Accelerate your data lifecycle with Cortex Code, a Snowflake-native AI coding agent. Simplify data engineering, ML, and agent-building with natural language.

Proprietary 1.21.8
Sublime Text 4
Sublime is a sophisticated cross-platform text editor for code, markup and prose.

Proprietary 4.0.0.421500
CatPawAI
AI Programming Agent

Proprietary 2026.9.2
Constly
A WYSIWYG Markdown editor that renders as you type and never rewrites a byte you didn't touch.

Proprietary 4.12.0
EditPlus
Text editor with FTP, FTPS and SFTP capabilities

Proprietary 6.1.780.0
Lingma
Fully integrated with the AI coding assistant, enjoy efficient and intelligent programming with an out-of-the-box experience without installing any plugins.

Proprietary 1.106.3
Markdown Viewer
Quick and easy Markdown file viewer

Open source 1.0.8
Sublime Text 4 (Dev)
Sublime is a sophisticated cross-platform text editor for code, markup and prose.

Proprietary 4.0.0.421400
Oxygen XML Author
Single-Source XML Authoring and Multi-Channel Publishing

Proprietary 28.1
Oxygen XML Developer
All the Tools You Need for Designing XML Schemas and Transformation Pipelines.

Proprietary 28.1
Oxygen XML Editor
The Premier All-In-One XML Editing Suite

Proprietary 28.1
CodeBuddy
Tencent Cloud Code Assistant

Proprietary 1.106.1
Qoder
Agentic Coding Platform for Real Software

Proprietary 1.106.3
Qoder IDE
Agentic Coding Platform for Real Software

Proprietary 1.106.3
Apostrophe for Windows
A native, distraction-free Markdown editor for Windows — a Tauri 2 + Rust port of GNOME's Apostrophe.

Open source 0.2.0
Haystack Editor
Navigate and refactor your code with ease

Proprietary 1.90.0
Okular (AppX / Portable)
The Universal Document Viewer

Open source 26.802.8165.0
PearAI
The AI Code Editor for Your Next Project.

Proprietary 1.8.9
CodeBuddy CN
Tencent Cloud Code Assistant CodeBuddy, an AI-powered coding IDE.

Proprietary 1.106.1