Bookdown
Write HTML, PDF, ePub, and Kindle books with R Markdown. The bookdown package is an open-source R package that facilitates writing books and long-form articles/reports with R Markdown. Generate printer-ready books and ebooks from R Markdown documents. A markup language easier to learn than LaTeX, and to write elements such as section headers, lists, quotes, figures, tables, and citations. Multiple choices of output formats: PDF, LaTeX, HTML, EPUB, and Word. Possibility of including dynamic graphics and interactive applications (HTML widgets and Shiny apps). Support a wide range of languages: R, C/C++, Python, Fortran, Julia, Shell scripts, and SQL, etc. LaTeX equations, theorems, and proofs work for all output formats. Can be published to GitHub, bookdown.org, and any web servers. Integrated with the RStudio IDE. One-click publishing to https://bookdown.org.
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StackEdit
Whether you write, you review, you comment, StackEdit's layout provides you with the flexibility you need, without sacrifice. StackEdit’s Scroll Sync feature accurately binds the scrollbars of the editor panel and the preview panel to ensure that you always keep an eye on the output while writing. StackEdit can sync your files with Google Drive, Dropbox and GitHub. It can also publish them as blog posts to Blogger, WordPress and Zendesk. You can choose whether to upload in Markdown format, HTML, or to format the output using the Handlebars template engine. Even when you travel, StackEdit is still accessible and lets you write offline just like any desktop application. You have no excuse! StackEdit supports different Markdown flavors such as Markdown Extra, GFM and CommonMark. Each Markdown feature can be enabled or disabled at your convenience.
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Mark Text
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Mark Text is an MIT licensed open source project, you will always be able to download the latest version from GitHub release page. Mark Text is still in development, and its development is inseparable from all sponsors. Support GFM table block, you can remove/add rows and columns. Support flowchart, sequence diagram, gantt diagram, vega chart. Support CommonMark and GitHub Flavored Markdown Spec. Realtime preview (WYSIWYG) and a clean and simple interface to get a distraction-free writing experience. Markdown extensions such as math expressions (KaTeX), front matter and emojis. Support paragraphs and inline style shortcuts to improve your writing efficiency. Paste images directly from clipboard.
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Ritemark
Ritemark is a free, open-source Markdown writing app for macOS and Windows. It stores documents as regular files in folders on the user's computer, with a visual editor for working with Markdown. Its AI sidebar runs Claude Code, Codex, or OpenCode agents against the open folder so they can read, create, and revise documents alongside the writer. A built-in terminal and folder-based workspaces support writing and reference workflows. Users can export documents to Word or PDF and publish or sync them with Google Docs. Basic editing does not require an account or AI service; using AI agents may require a separate provider account or API costs. Ritemark serves writers, including technical writers and product managers, as well as consultants and other professionals preparing documentation, specifications, training material, and client-facing documents.
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