10 ranked, with a plain verdict on every entry.
AFFiNE is an open-source knowledge base software combining docs, whiteboards, databases, and AI in one local-first workspace. It allows teams to build connected knowledge bases while maintaining full control over their data.
Notesnook is a free and open source note taking app focused on user privacy.
Basic Memory is an open-source knowledge base that stores data as plain Markdown files within a structured graph. It allows users to retain full ownership of their information while enabling AI tools to traverse and utilise the connected context.
Anytype is a safe haven for digital collaboration that prioritises absolute data privacy and security. It allows users to own and control their information forever through local, on-device encryption.
Notabase is a powerful and easy-to-use note-taking app designed for networked thinking. It allows users to connect ideas together and write more effortlessly.
SilverBullet is an open source knowledge management system that adapts to personal, team, and family needs. It stores data as plain Markdown files under full user control.
OpenKnowledge is a beautiful, AI-native markdown editor. It serves as a rich text editor and knowledge base for users and their agents.
Standard Notes is a secure note-taking application featuring end-to-end encryption. It offers seamless syncing across unlimited devices while prioritising user privacy.
Joplin is an open source note-taking app that allows users to capture thoughts and securely access them from any device.
Turtl is a secure, collaborative notebook that organises bookmarks, passwords, files and shopping lists. It allows users to sync data across devices while maintaining high-end cryptography.
Positions 1, 2 and 3 are available to buy for twelve months.
Affine says it is built for teams seeking a unified knowledge base, and Notesnook for users wanting full encryption without hassle. Basic Memory says it is built for teams using multiple AI agents, and Anytype for teams seeking private collaboration.
Notabase states that the Basic plan restricts users to only ten notes before requiring an upgrade. Those are the limits each product publishes itself, not a full account of any plan.