TheBrain, formerly branded PersonalBrain, is a mind mapping and personal knowledge base software from TheBrain Technologies.[1] It uses a dynamic graphical interface that maps hierarchical and network relationships.[2] It includes the ability to add links to Web pages and files as well as notes and events using a built-in calendar.[3] It is cross-platform, available for Windows, Unix and Unix-like operating systems, and Mac OS X.[4] It is available in a free edition as well as in commercial edit
