Curio is a freeform visual workspace for Mac that lets you capture, connect, and develop ideas on infinite canvas-style project pages — blending mind maps, rich text, images, documents, and task lists in a single Zengobi-built environment.
What is Curio?
Curio is a macOS-native project notebook that throws out the linear-page metaphor entirely. Instead of scrolling through a long document, you work on Idea Spaces — open canvases where every element lives exactly where you put it. Sticky notes, PDF annotations, web clippings, sketches, and bullet lists coexist without fighting for hierarchy. I first opened it expecting a glorified note app and found myself rearranging a research project that had been stuck for weeks in about an hour.
Zengobi has been shipping Curio since the early Mac OS X days, and the app carries that maturity in its bones. Nothing feels bolted on; the spatial canvas, the built-in Idea List task manager, the mind-mapping mode, and the presentation layer all read as facets of one coherent vision rather than a feature checklist.
What does Curio do best?
Curio excels at visual project thinking — the kind of messy, non-linear work that Notion columns and Apple Notes bullets actively fight against. Drag a PDF from Finder onto an Idea Space, surround it with hand-drawn arrows, link it to a mind-map branch, and annotate it inline. Everything snaps to a soft grid if you want it, or floats free if you don't.
- Freeform canvas layout — position any element anywhere; zoom in and out of a project like a map
- Idea List (built-in task manager) — pull actionable items from any figure on the canvas into a filterable checklist without leaving the app
- Mind maps and concept maps — first-class, not a plugin; branch relationships auto-route cleanly
- Rich media embedding — PDFs, images, movies, web archives, Keynote slides, code snippets, and more land natively
- Presentation mode — walk a client through your canvas without exporting to another app
- Templates library — brainstorming sessions, project plans, Cornell notes, and dozens more to start fast
Where apps like Craft or Obsidian give you a connected web of documents, Curio gives you a connected web of thinking surfaces. That distinction matters enormously for research-heavy or creative work.
How much does Curio cost?
Curio is sold as a one-time purchase directly from Zengobi's site in three tiers — Core, Standard, and Professional — each unlocking progressively more canvas features, export options, and template depth. There is no subscription, which is increasingly rare and genuinely appreciated. A free trial is available so you can stress-test the canvas before buying. Pricing is in the mid-range for pro Mac utilities; nowhere near cheap, but reasonable given the depth on offer and the absence of annual fees.
Who should use Curio?
Curio is built for people whose work resists linearity: researchers building literature reviews, writers mapping story structure, consultants outlining deliverables, educators designing courses, and product managers who think in diagrams as much as prose. If your current workflow is a mix of a whiteboard photo, a Notion doc, a mind-map app, and a sticky-note pile — Curio collapses most of that into one file.
It is decidedly not the right tool if you want frictionless mobile capture or real-time collaboration. Curio is a focused, single-player, desktop-first Mac app. Obsidian suits networked-note power users better; Craft wins on Apple ecosystem polish and collaboration; Miro or FigJam beat it on team whiteboarding. But for a solo thinker doing deep individual work, Curio has no direct equivalent on the Mac.
What are the best Curio alternatives?
The closest spatial-canvas alternatives are Heptabase (card-based, excellent for literature reviews, cross-platform) and Muse (gorgeous iPad-first ink-and-PDF board). For pure note-taking with linking, Obsidian and Craft are the dominant camps. For task-adjacent thinking, OmniOutliner covers structured outlining while OmniFocus handles the action side. None of them match Curio's combination of spatial canvas, embedded task management, mind maps, and rich media in a single native Mac window.
How does Curio compare to Obsidian?
Obsidian organises knowledge as a graph of interlinked Markdown files; Curio organises it as a spatial arrangement of any media type on a canvas. Obsidian's plain-text, plugin-extensible model makes it the power user favourite for long-term personal knowledge management. Curio wins when a project has a defined scope and a visual thinking phase — you'd plan a book in Curio and archive the notes in Obsidian, not the other way around. The two can coexist without stepping on each other.
