最佳开源 Personal Knowledge Management (PKM)

An open-source alternative to Notion, offering powerful note-taking, task management, and database features in a customizable interface.

A self-hosted, open-source solution for secure and efficient note-taking, allowing you to easily capture and share your thoughts.

SiYuan is a personal knowledge management system that prioritizes privacy, supports Markdown, and offers block-level referencing and bidirectional linking.

A privacy-first, open-source platform for networked thought. Organize, connect, and discover your ideas with ease.

End-to-end encrypted note-taking app with cross-platform sync, rich text editing, and offline support for ultimate privacy and productivity.

The next generation of open-source AI-powered card notes designed to help you quickly capture and organize inspiration so that ideas never run out.

A versatile, open-source tool for organizing thoughts, notes, and data with customizable objects and relational structures.

A local-first note-taking application that prioritizes privacy and efficiency, featuring Markdown support, offline access, and powerful organization tools.

Justnote is a secure note-taking app that lets you easily create and sync notes across devices while maintaining full control of your data.

A free, cross-platform note-taking and to-do application with end-to-end encryption for seamless organization and productivity.

OpenNotas is a multi-platform, end-to-end encrypted note-taking app that offers simplicity, synchronization, and offline functionality.

An open-source personal AI application that helps you find answers, understand documents, and create new content with ease.

AI-powered research assistant that integrates with Notion, GitHub, Slack and more. Chat with documents, generate podcasts, perform hybrid search across your knowledge base.