Obsidian

Obsidian is a powerful knowledge management tool that allows users to create, link, and visualize notes in a private, Markdown-based environment. It’s designed for thinkers, writers, and researchers who value flexibility, privacy, and long-term data ownership, offering a private and secure space for your ideas.

Store notes locally on your device for quick, offline access, ensuring your data remains private and inaccessible to others, including Obsidian itself. With endless customization options through community plugins and themes, Obsidian adapts to your unique thinking style, while its use of open Markdown files guarantees long-term data ownership.