StackEdit
A full-featured in-browser Markdown editor.
Write Markdown in the browser with highlighted source, a synchronized preview, and offline editing. StackEdit can sync files with services such as Google Drive, Dropbox, and GitHub, and publish to connected destinations. Tables, task lists, math, Mermaid diagrams, and discussion comments support technical writing.
Product preview
See StackEdit in action

What is StackEdit best for?
StackEdit is a free Markdown tool best suited to browser-based technical writing with offline drafts and connected storage. It is available as Web app on Web, and its source status is open source.
Verified editor profile
Reviewed September 27, 2026
MarkdownList independently checked these facts against the product, its official documentation, or its public source. Missing items mean not verified, not necessarily unsupported.
Editing experience
Files and offline use
- Works offline
Markdown support
- Tables
- Task lists
- Math
- Mermaid diagrams
- Syntax-highlighted code
Collaboration and history
- Real-time collaboration
- Comments
At a glance
- Pricing
- Free
- Source
- Open source
- Best for
- Browser-based technical writing with offline drafts and connected storage
Availability
Platforms
Surfaces
Related tools
Markdown Writer
Write Markdown with a focused side-by-side preview.
Edit Markdown in your browser with source, split-preview, and reading views, a heading outline, and locally stored documents. Render tables, task lists, footnotes, code highlighting, KaTeX math, and Mermaid diagrams, then export to PDF, HTML, or Markdown. Core browser editing works without sign-in; Pro adds device sync and AI features. A native Mac app requires macOS 26 or later.
Web app · Desktop app
Web · macOS
mdedit.ai
A visual workspace for serious Markdown documents.
Write and review Markdown with source and live preview, tables, Mermaid diagrams, math, frontmatter, and an outline. Local workspaces, comments, revision history, collaborative editing, and exports to PDF, HTML, and DOCX support longer document workflows. Core editing is free, with paid collaboration and AI options. Native apps cover desktop and Android; the iOS app is still coming soon.
Web app · Desktop app · Mobile app · AI agent plugin · Agent skill
Web · macOS · Windows · Linux · Android