Obsidian
Obsidian is a powerful knowledge base and note-taking application built on top of a local folder of plain text Markdown files. It enables users to create interconnected notes, visualize relationships using interactive graphs, and brainstorm ideas on an infinite canvas. Designed for privacy and local-first data ownership, it operates completely offline and supports extensibility through a vast ecosystem of community plugins, custom themes, and an open API.
Checked on Sep 30, 2026.
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