Dillinger
Dillinger is a cloud-enabled HTML5 Markdown editor that can be used offline and is powered by AngularJS. Markdown is a lightweight markup languages that uses the same formatting conventions as email. Drag and drop HTML files into Dillinger to convert them to Markdown. Drag and drop Markdown or HTML files into Dillinger. You can export documents as Markdown, HTML, and PDF. The text you see is actually written in Markdown. To get an idea of Markdown's syntax, simply type some text in the left window and then watch the results in right. Drag and drop images (requires your Dropbox account be linked). Import and save files from GitHub, Dropbox, Google Drive and One Drive.
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1Writer
1Writer combines all the basic text editing features you would expect with all the advanced features you will ever need. Use 1Writer to write, research, revise, and share your ideas with maximum efficiency. 1Writer provides a distraction free writing environment. You can create and edit plain text or Markdown files. It does have many features including inline Markdown preview, word count, dark theme, TextExpander support, insert photo, an extra keyboard row, and many more. See the formatted results with inline Markdown preview while you write and a full, rich-text preview when you're done. Pick and choose existing Dropbox or WebDAV folders you want to sync or sync them all. Work offline and your changes will be synced next time you connect to the Internet. It also supports iCloud Drive - start a new document on your Mac and continue editing it in 1Writer, and vice versa. You can send text to 1Writer from Safari and other apps via the Share extension or 1Writer URL scheme.
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Byword
Draft a blog post, write that story or complete a school report wherever you are. Use Markdown to format text with easy keyboard shortcuts, subtle syntax highlighting, word counters with live update, and much more. All your documents, on all your devices. With iCloud and Dropbox, you can create documents in Byword on your Mac and access them on your iPad, iPhone, and iPod touch. And vice versa. You can edit them from anywhere, on any device you use. Byword includes complete Markdown support. Preview your documents in app, export to HTML, PDF, rich text, or publish directly to Medium, WordPress, Blogger, Tumblr and Evernote. The lack of support for rich text is due to technical limitations and limited development resources. We are evaluating the cost/benefit of investing in rich text support of iOS. Meanwhile, we strongly recommend opting for plain text and markdown format for your documents. Macworld has a great article explaining why opting for plain text today is a good idea.
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Unmarkdown
Unmarkdown converts markdown into perfectly formatted documents for six destinations: Google Docs, Word, Slack, OneNote, Email, and Plain Text. Paste or write markdown, choose from 62 templates, and copy formatted output ready to use in your target application. Built for anyone who uses AI tools like ChatGPT, Claude, or Gemini and needs the output to look right when it lands in a real app. Features include 12 AI editing actions, document publishing with custom URLs, document sharing, a Chrome extension for in-page conversion, an MCP server for AI tool integration, and a REST API with 13 endpoints. Free tier includes 5 documents. Pro starts at $8/month.
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