Zengobi has released Curio 6 (http://www.zengobi.com/curio), an
upgrade of the note taking, mind mapping, brainstorming, and task
management application for Mac OS X. The upgrade adds completely
style-able index cards for jotting down and organizing notes.

Version 6.1 also adds a decoration image well for associating an
image with a figure, smarter text exporting of multiply selected
figures and other features and fixtures. Using Curio’s freeform
interface and tools, you can gather, associate, and recall your
ideas, while managing all the notes and documents associated with
your project.

Curio is available in two editions: Standard (US$99) and Professional
($149, US$69 academia). Discounted Curio 6 upgrades are available to
current Curio 5 (and earlier) customers. Version 6.1 is a free
upgrade to registered users of version 6.0.