Obsidian
Build your second brain with bidirectional linked notes + interactive knowledge graph visualization - 100% free personal use, local-first Markdown privacy.
4.8
Verified
freemium
What is Obsidian - Free Linked Notes & Knowledge Graph 2026?
Obsidian - Free Linked Notes & Knowledge Graph 2026 is a specialized productivity tool designed to streamline workflows for professionals.
Obsidian creates your personal knowledge universe through automatic note linking and visual graph discovery.
Key Use Cases:
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Key Features
Automatic bidirectional linking
Interactive knowledge graph view
Local Markdown files (future-proof)
2000+ community plugins/themes
100K+ notes performance
Mobile + desktop sync
Local-first privacy focused
Daily notes + graph analysis
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Frequently Asked Questions
Is Obsidian really free for personal use?
100% free forever for personal use. Only commercial/business use requires $50/user/year license.
Where are Obsidian files actually stored?
Local plain Markdown (.md) files in any folder. Dropbox/iCloud/Git portable across ALL apps/editors.
How many notes can Obsidian actually handle?
100K+ notes scales perfectly across desktop/mobile. Graph visualization handles massive knowledge bases.
Obsidian vs Notion/Roam - key differences?
Obsidian = local files + free + infinite plugins. Notion = cloud SaaS. Roam = expensive cloud-only.