CS Odessa has released ConceptDraw MINDMAP v. 4.5, a free update of its mind mapping and brainstorming software for Mac and Windows.

The OS X version sports an improved user interface, a spell checker, an improved Export to PDF function and a number of other improvements and fixes in response to user feedback.

"We always strive to improve our program according to our customer's needs, and maintain our existing users, paying attention to their feedback," said product manager Yury Varbanets.

The new version is available for free download to all registered users of MINDMAP 4.0 or higher.