TheBrain
Connected workspace for your ideas
TheBrain is a visual knowledge workspace that organizes notes, files, links, projects, and AI into a connected network rather than folders or isolated pages. It is designed to help users capture information, see relationships between ideas, search across their knowledge, and work with full context. The platform is available on Windows, Mac, Linux, iOS, Android, and the web.
Core capabilities include capturing notes, files, links, and web pages; linking thoughts across projects, topics, people, and timelines; and searching across a Brain while returning connected context. Cerebro AI is built into the platform and can summarize notes, create new thoughts, suggest links, answer questions using retrieval-augmented generation, and help build out areas of a knowledge graph. Views include Card View, Mind Map, and Tree View, and the platform offers API access and sync and sharing features.
TheBrain is aimed at individuals working on personal knowledge, projects, and research, as well as teams building shared knowledge networks. The desktop app is free for personal and commercial use with unlimited thoughts, links, and brains, plus limited AI usage and sync allowances. Optional paid plans add unlimited private sync, increased Cerebro AI usage, online storage, multi-user editing, support, and reporting, with an enterprise option for on-premises deployment.
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