A collaborative editor for Markdown, Quarto, and R Markdown. Real-time co-editing, in-browser R rendering, citation management, and version history — in one place.
From drafting to rendering to review, in one editor.
CodeMirror 6 with syntax highlighting, code folding, line numbers, and spellcheck. Full keyboard shortcuts for efficient editing.
WYSIWYG editing powered by Milkdown. See formatted text as you write, with bidirectional sync to the source view.
Side-by-side rendered markdown with GFM tables, math (KaTeX), and syntax-highlighted code blocks. Scroll-synced with the editor.
Run R and Quarto documents with a local R server or directly in the browser via WebR. No installation required for browser mode.
Edit simultaneously with your co-authors. See live cursors, presence indicators, and changes as they happen via Yjs.
Highlight any text and leave a comment, just like Google Docs. Reply, resolve, and jump to commented sections.
Switch between source, preview, WYSIWYG, and rendered output — all synced.
Code editor with syntax highlighting
Editor + rendered markdown side by side
Editor + WYSIWYG side by side
Editor + R/Quarto output side by side
Version control, citation workflows, and team collaboration — without leaving the editor.
Automatic versioning on inactivity, session changes, and daily checkpoints. Manual saves anytime. Restore any previous version.
Connect a repository, browse files, import documents, and push changes with commit messages directly from the editor.
Upload BibTeX files, search Zotero, and insert [@key] citations with autocomplete. Manage your bibliography from a sidebar panel.
Generate share links with viewer, commenter, or editor access. Invite collaborators by email with granular permission control.
Use Google, GitHub, ORCID, or email. No credit card needed.
Choose .md, .qmd, or .rmd. Start from scratch or load an example.
Edit, render, invite collaborators, and export when ready.
Free for researchers. No setup, no downloads, no friction.