The Editorial Verdict
Your notes are just Markdown files in a folder on your drive. That's the entire pitch of Obsidian, and it is why millions of developers, researchers, and writers have abandoned proprietary cloud wikis for it.
Because Obsidian writes directly to plain .md text files, your files can be opened in VS Code, git-tracked, indexed with ripgrep, or backed up to any drive without export scripts. If Obsidian disappears tomorrow, your knowledge base remains 100% readable.
Key Trade-Offs & Realities
What Works Exceptionally
- True Data Sovereignty: Zero cloud lock-in. Files are standard Markdown.
- Graph Analysis: Visualizes connections and backlinks between ideas.
- Vibrant Ecosystem: Dataview, Kanban, and sync plugins expand functionality.
- Blazing Fast: Instant search even across vaults with tens of thousands of notes.
Considerations & Trade-Offs
- Closed-Source Core: App binary is proprietary freeware, not OSI open source.
- Sync Setup: Official sync requires a paid tier; free sync requires Syncthing/Git.
- Mobile Startup: Large vaults take a few seconds to index on mobile devices.
How Obsidian Compares to Notion
Unlike Notion's proprietary block databases that live entirely on someone else's servers, Obsidian runs 100% offline. With plugins like Dataview, you get SQL-like queries over Markdown frontmatter, yielding tables and views that rival Notion without subscription fees.
For a full side-by-side comparison with AppFlowy, see our in-depth research piece:Obsidian vs. AppFlowy: Local-First Knowledge Management Compared.