TheBrain, formerly branded PersonalBrain, is a mind mapping and personal knowledge base software. Developed by TheBrain Technologies
License: Freemium
Apps available for Mac OS X Windows Linux Online Android
Ultra Recall is personal information, knowledge, and document organizer.
License: Commercial
Apps available for Windows
Ultra Recall excels in organizing and managing large volumes of information with a focus on a tagging system, while TheBrain offers a unique visual approach to knowledge management through mind mapping and dynamic linking.