Obsidian

Productivity & Knowledge Management active ★ 4.8 freemium · $10/month Free tier available

Obsidian is a powerful and extensible knowledge base that works on top of a local folder of plain text Markdown files. It allows users to create a "second brain" by connecting notes through bidirectional linking. Its strength lies in its local-first philosophy, extensive plugin ecosystem, and graph view, which visualizes the connections between notes.

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Key Features

Bidirectional LinkingCreate a network of your knowledge by linking notes to each other. See all the notes that link to the current note in the backlinks panel.

Graph ViewVisualize the connections between your notes as an interactive graph, helping you discover new relationships and insights.

Plugin EcosystemA vast library of community-built plugins that add a wide range of functionality, from calendars and Kanban boards to AI assistants.

Local-First & Plain TextAll your data is stored in Markdown files on your local machine, giving you full ownership and control.

Use Cases

Building a personal knowledge management (PKM) system
Academic and professional research and note-taking
Writing and organizing long-form content like books or theses

Pros

Your data is stored locally in plain text files, ensuring privacy and longevity
Massive plugin ecosystem allows for endless customization and new features
The graph view provides a unique way to visualize and discover connections
Completely free for personal use without feature limitations

Cons

Syncing between devices requires a paid subscription or a complex third-party setup
Can have a steep learning curve for beginners due to its extensive features

Pricing

Plan	Price
Personal	Free
Sync	$10/monthly
Publish	$20/monthly
Commercial	$50/per-user-yearly

Works With

ChatGPTNumerous community plugins integrate ChatGPT to allow users to summarize, rewrite, or generate conte

Comparisons

Obsidian vs CapacitiesSide-by-side comparison Obsidian vs GrainSide-by-side comparison Obsidian vs LogseqBoth are local-first, networked-thought tools. Obsidian is more of a traditional text editor, while Logseq is an outliner at its core.Obsidian vs NotebookLMSide-by-side comparison Obsidian vs Notion AIObsidian is a local-first, text-focused tool for individual knowledge management, while Notion is a collaborative, all-in-one workspace with a database-centric structure.Obsidian vs Read.aiSide-by-side comparison Obsidian vs TanaSide-by-side comparison