Structured writing
Cartesian helps you organize thoughts into structured notes, outlines, and drafts — so you can focus on what matters.
Create hierarchical outlines that keep your ideas in order.
Distraction‑free canvas for deep writing.
Export to Markdown, PDF, or plain text with one click.
Jot down ideas as they come.
Drag, indent, and reorganize.
Edit, export, and share.
“Cartesian turned my scattered notes into a clear outline. I finished my article in half the time.”
“The focus view helps me stay in the zone. I write more, edit less.”
Recommended
Yes. The Free plan offers unlimited outlines and basic export at no cost.
Export to Markdown, PDF, or plain text with one click.
Cartesian syncs when you’re online; your latest edits are saved locally and upload when you reconnect.
Join thousands of thinkers who trust Cartesian to structure their thoughts.