Curio 10

Professional brainstorming, mind mapping, and note taking for the Mac.

With Curio you’ll discover an intuitive, freeform environment with all the integrated tools you need to take notes, brainstorm ideas, collect research, and organize your tasks and documents. A single, incredibly powerful application where you can be more productive and focus on getting things done. And, with Curio 10, new tools and features are at your fingertips so you can achieve even more.

Curio app icon

Discounts on new licenses are available for qualifying staff, faculty, and students of accredited educational organizations.

Curio app icon

Discounted upgrade licenses are available to existing Curio customers who have purchased a previous license from the Zengobi store.

If you can’t find your license key we can email it to you.

If upgrading from a Mac App Store purchase please forward your Mac App Store receipt or iTunes screenshot to for crossgrade options.

What’s Curio?

Curio is a professional, feature-rich environment for brainstorming, note taking, and research gathering.

The Real World

You have work projects and home projects, school classes to manage and book reports to research, vacations to plan and novels to write, web sites to design and lab results to organize.

You currently use a collection of notebooks, your office whiteboard, scraps of sticky notes, oodles of browser bookmarks, and multiple documents scattered around your hard disk.

You’re juggling it all, but organizing this information should be easier.

A Better World!

In Curio, create a project to represent your real-world project, then fill it with everything related to that project including notes, images, documents, web links, and much, much more. Use Curio’s integrated collections, such as lists and mind maps, to organize all of this information or just place it anywhere on Curio’s freeform pages, which we call idea spaces.

Anything placed into Curio can be associated with tags, flags, checkboxes, priorities, ratings, and start/due dates and durations, for fast and easy searching and task management.

The best part is you are in complete control over your idea spaces. Make them sloppy or organized, freeform or in a grid—this is your project notebook. This is called visual thinking and perfectly mirrors your real-world notebooks and whiteboards so you are instantly comfortable in Curio’s intuitive environment.

Thousands of customers around the world use Curio in a surprisingly diverse range of occupations. We have students and professors, engineers and designers, lawyers and writers, entrepreneurs and filmmakers, all using Curio for information gathering, brainstorming, and creative exploration.

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Curio 10 runs on OS X Yosemite, El Capitan, or Sierra.
Release NotesLicense Agreement
User Manual: PDF or iBooks ePub

Curio for Note Taking

Curio is an amazingly flexible digital notebook for storing and managing everything.

We call Curio’s innovative pages idea spaces—a perfect blend of notepaper, whiteboard, and sketchpad. You can type anywhere, sketch anywhere, and drag-and-drop anything to your idea spaces making it a perfect tool for note taking and research gathering.

Idea Spaces

Welcome to your digital notebook.

Your Curio project notebook contains all your notes, documents, and research in one file. Mix text, index cards, tables, and even a mind map all on the same idea space. Add any type of media including images, videos, and YouTube or Vimeo clips. Plus Curio has built-in support for making audio and video recordings. You can even embed live WebViews and Google Docs views.


Curio’s executive assistant.

Curiota is a fantastic new, free companion product available exclusively from the Mac App Store that integrates with and extends Curio’s functionality and connectivity. Curiota runs all the time, stays out of the way, and provides numerous ways for you to collect notes, files, and research, including several script-based methods for power-users. The notes and files you gather with Curiota can be accessed using Curio’s new Local library shelf.


Evernote, integrated.

From within Curio, you can access your Evernote cloud so brainstorming and idea collection is quick and easy whether at your desk or away from the office. Text notes, voice recordings, and snapshot photos taken using one of Evernote’s apps are now instantly available from within Curio where they can be intuitively collected, arranged and managed as part of a creative project.


Your personal Internet assistant.

Curio includes Sleuth, an integrated Internet search assistant that makes it fun and easy to search for images, stock photos, definitions, research, translations, videos and more. Sleuth even includes a profanity filter which can be enabled for home or school environments.

Curio for Brainstorming

The ultimate brainstorming and idea development environment.

Curio’s tightly integrated brainstorming tools are the perfect complement to its notebook interface. Since these tools are built-in, you don’t have to purchase another application to expand on a thought or idea.

Mind Maps

Mind Maps

Curio’s full-featured mind mapping functionality includes styles, stencils, branch coloring, relationship lines, shaded boundary regions, and branch sorting. Curio supports radial, left, right, org chart, top-down, and bottom-up mind map arrangements. Curio can automatically roll-up completion percentages and calculate and distribute start/due dates. Curio supports iThoughts, Mindjet, iMindMap, MindNode, and OPML importing and exporting, and direct importing from You can even use Curio’s integrated presentation mode to present your brainstorms for all to see.



Here we’ve added a Curio list to keep track of a client’s objectives. Curio supports simple styled lists and more complex hierarchical lists with checkboxes, percent complete and due date calculations, and other meta information. Curio’s lists include full support for custom numerical or bulleted prefixes plus OPML importing and exporting. A quick right-click will convert a list to a mind map or vice versa.

Idea Graphs

Idea Graphs

Create fast connected idea associations when you need more flexibility than a mind map offers. With just a click, you can create instantly connected shapes with directional, bidirectional, or unidirectional lines.



Insert gorgeous styled tables with full support for row and column headers and footers. Import and export table information via CSV or copy/paste from Excel or Numbers. Since table cells are simply figures, they can include any meta information including ratings and notes.

Index Cards

Index Cards

Many authors and writers prefer to use index cards to organize their information. Use one of the many bundled styles or create your own. Create a stack of index cards and spin through them using your scroll wheel to find your best ideas.



Quickly create collections of photos or other assets with or without captions. Curio includes several album and image styles to make your collections really stand out.



When you picture a group brainstorming session you see whiteboards filled with sticky notes arranged in groups. Pinboards support these same handy freeform figure arrangements.



New in Curio 10 is the stack collection. Perfect for organizing and visually managing tasks, stacked items can be manually arranged or automatically sorted such as by date, priority, or rating. With Stacks, items can inherit the title’s tag, so a quick drag-and-drop will automatically re-classify your tasks and sync them with the Status shelf. This also makes them perfect for Kanban visualization boards.

Curio for Flowcharting & Sketching

Notebooks are more than just notes.

Curio includes built-in vector drawing tools for flowcharting and diagramming, plus bitmap pens and brushes for quick sketches when your right-brain needs a chance to express itself. It’s all integrated within Curio.

Curio for Task Tracking

Find and track all of your notes and tasks.

Curio has full support for meta information to find that brilliant idea and to stay on top of your to-do list.

Curio for Annotating

Look forward to your next meeting or lecture.

With integrated PDF annotation tools—plus our amazingly popular Spread PDF feature—you can easily manage handouts and materials. Perfect for classroom or business meeting settings.

“If you’re already using a previous version of Curio, go get this new update.”


“I have yet to review a better, friendlier, or more powerful tool for taking on any project under the sun.”


“Taken together, Curio is one fast-loading, responsive package with fantastic potential and tons of flexibility.”


“If you haven’t tried Curio before, now is the time.”


What’s New in Curio 10?

Everything you need to be even more productive.


Curiota is a fantastic new — free — companion app that integrates with and extends Curio 10’s functionality and connectivity, available as a separate download exclusively from the Apple Mac App Store.

Download Curiota from the Mac App Store

Instant note and file collection at any time

Curiota runs silently in the background, using very little memory and almost no user interface except for its icon up in the menu bar area.

Tap Curiota’s icon and quick add a rich note to Curiota. Or drag-and-drop files and images to the Curiota icon to instantly add items to your Curiota collection.

Curiota also supports OS X Services, the OS X Share button, Save PDF to Curiota, a browser bookmarklet, and even AppleScript so you can easily send information from anywhere into Curiota, and therefore into Curio.

Integrates with Curio

Then, within Curio 10, you'll use the new Local library shelf to view and search through all your collected data.

Curiota is available as a separate download so we can update its functionality much more rapidly than Curio’s release cycle. Expect lots of new features and updates coming soon!

Check out all the details on Curiota.


Curio proudly introduces stacks, a new integrated collection perfect for visual task tracking and idea management!

Visual organization

Create an idea space with one or more stacks. Each stack can be used to organize your tasks, ideas, and brainstorming notes into categories or groupings that you define. Create stacks like "Ideas", "Pending", "Next" and "Done!"; or "Wedding Rehearsal", "Ceremony", "Reception". Double-click within a stack to create new items or drag-and-drop items between stacks.

Manually arrange or auto sort

You can drag items up and down within the stack, to manually prioritize your items, or ask Curio to keep the stack automatically sorted by title, creation date, modification date, due date, start date, start date or end date if already started, percent completed, priority, or rating. You can specify a secondary sort, as well. Make a change to a figure and instantly the figures rearrange based on the sorting rule.

Tagging super power

In addition, stacks support a special tagging feature so simply drag-and-dropping tasks from one stack to another will automatically update associated tags behind the scenes and reflect the changed task status in the Status shelf. Truly visual task tracking!

Polished Interface

The user interface has a more refined experience with new Style, Text, Pinboard, Album, and Index Card inspector shelf panels; modernized inspector bar icons; a more intuitive Status shelf icon indicator; a Zoom toolbar popup; more responsive pinch gesture support for zooming; and calmer inspector colorings.

Mind Map & List Sorting

By popular request, both mind map and list collections can now have automatically sorted branches!

Select a parent node in either a list or mind map then choose to sort by title, creation date, modification date, due date, start date, start date or end date if already started, percent completed, priority, or rating. You can optionally specify a secondary sort criteria, as well.

Once set up, the children of the selected node will be instantly sorted, and kept sorted as you change the figures. You can also specify that the sorting criteria is recursive so child branches are also kept sorted.

iMindMap & MindNode Support

Curio now supports iMindMap’s mind mapping data file format for both importing and exporting.

We have also improved Curio’s existing MindNode compatibility with support for zipped MindNode data files and the MindNode 2 format. In addition, Curio includes support for MindNode’s OPML output.

Table Enhancements

Fit and distribute

By very popular demand, Curio tables can now size row and column cells to fit their content. Select either the table or selected cells and use the new Fit button to tell Curio to resize the rows or columns, so they fit the contents of the tallest, or widest, cell.

Similarly, Curio can now evenly distribute the heights or widths of the selected rows or columns (or all rows or columns) so they each have the same value.

Better resizing

Resizing rows and columns is now easier as the table will now be resized as you resize the row or column. This makes it much easier to size your cells exactly the way you like.

Tag Emoji

You can now associate an emoji or Unicode symbol with a tag!

Tag images are still supported, but unlike most images, emoji scale beautifully, consume very little disk space, and OS X includes loads of them! For these reasons, all of Curio’s bundled tag images have been converted to emoji and many new Flags have been added.

If you choose a Unicode symbol, instead of a colored emoji, you can specify a tinting color. As an example, notice the Down Time’s arrow is colored red in the screenshot here.

On a related note, we also made some changes that make it easier to share projects that use global tag sets.

Local Library Shelf

The Local library uses the power of Spotlight to quickly find files on your hard disk using a number of criteria including text, tags, modification date, and kind of file.

You can direct Local to search your entire Mac, or restrict the scope to your Home folder and any folders it contains. Even better, you can extend this with additional custom scope folders. For example, you might add your Dropbox folder, your Google Drive folder, and a personal project folder.

The Local scope popup will also list all the notes and files found in your Curiota collections.

Example Uses
  • List all notes added to Curiota, sorted by last modified date.
  • Find all image files modified in the past 2 weeks.
  • Find all files with a tag "school" created in the past month.
  • Find all files in your ~/Dropbox/Research folder, sorted by last modified date, so you can quickly see your latest research notes that you filed away using your iPad.
  • Find all files added recently to your custom "inbox" folder.

Stencils Library Shelf

Curio has a Stencils shelf for those customers that use a lot of figure stencils, so you can easily drag-and-drop figure stencils into your idea space.

The new shelf support both simple stencils, containing just a single figure or grouped figure, and complex stencils, which can consist of multiple figures, such as a landscaping stencil.

Example Uses
  • Boilerplate text items of various font size and shape enclosures.
  • Various types of lines and arrows drawn using different colors and endpoint styles.
  • Geographic maps.
  • Floor plan or interior design elements.
  • Network diagram elements.
  • User interface design elements.
  • Website design elements.

Organizer Aliases

You can now create aliases to idea spaces or other Organizer items within the Organizer. So, for example, you can now easily create a folder of idea space aliases pointing to idea spaces scattered throughout your project.

YouTube and Vimeo Video

It is now incredibly easy to embed YouTube and Vimeo videos in your idea spaces. Simply drag-and-drop the URL to the video file and Curio will automatically create the necessary WebView, set up the URL, and make the resulting figure proportionally resizable for easy resizing.

This makes it incredibly easy to include reference or instructional videos in with your projects.

Updated for El Capitan and Sierra

Curio 10 runs on OS X Yosemite, El Capitan, or macOS Sierra as its codebase has been massively updated to use Apple’s latest frameworks as well as the latest versions of several 3rd party frameworks.

Plus Much, Much More!

More intuitive automatic styling for figures dropped/pasted into collections • New Organizer features like new folder from selection & copy as image • New Evernote features like attribution line & source URL • New Notes window features like keyboard shortcut & background color • New Sleuth features like stay on top & transparency • Easy duplicate figure and its underlying asset • Set media start, stop, poster, and loop via new media bar actions menu • Drag asset figures directly to the Finder or other app • New tag variable and variable directives for case transformations • Pinboard expand/collapse support, arrow key support, and better drag-and-drop • Album expand/collapse support • Cleaner looking bullet lists • List and mind map context menu additions plus Children Auto Inherit This Figure’s Colors checkbox • Presentation mode enhancements • Better titles for Curio hyperlinks • Calendar/Reminders syncing rewritten to use Apple’s new EventKit framework for faster and more reliable syncing • Video playback rewritten to use Apple’s new AVKit framework with inline movie controls • Grab web archive enhancements and Retina support • Smarter parsing of Mail messages when dragged into an idea space • Overall performance improvements • Plus oodles of other tweaks and fixes.

View the complete list of new features ›

Upgrade for US$49.99

Curio 10 runs on OS X Yosemite, El Capitan, or Sierra.

Reviews & Sightings

A Personal Note

I’ve always been a huge fan of taking notes, sketching out ideas, and brainstorming. In the past, my notebooks and whiteboards were covered with notes, to-do lists, interface sketches, and much more. I made sure my office had the largest whiteboard possible.

Over 10 years ago, during the development of Curio, the goal was to create a notebook app specifically for designers and other creative types. While working on the initial interface and feature set, it dawned on us that a completely freeform environment, much like the notebooks in our hands and the whiteboards around the room, was exactly what we needed to create and not just for designers but for everyone who takes notes and collects ideas.

Curio is now the most innovative application on the market for brainstorming, note-taking, and productivity and used by thousands of customers around the world. With Curio we’ve created an environment where brilliant minds will find all the tools they need to develop their ideas and find inspiration. It’s wonderful to see how people are using Curio and I, personally, have ditched the whiteboard and use Curio for all my visual thinking. I look forward to the next 10 years of amazing Curio development.

— George, Founder of Zengobi