Notion vs Obsidian——どっちが優秀？
Notionを選ぶべき人: ドキュメント、Wiki、プロジェクト管理を1つのツールにまとめたいチーム向け
Obsidianを選ぶべき人: 自分のデータを自分で持ちたい、パーソナルなナレッジグラフを作りたいパワーユーザーや開発者向け
私たちの見解: Notion for simplicity, Obsidian for power users.
| Notion | Obsidian | |
|---|---|---|
| 料金 | Free personal plan | Plus $8/user/mo | Free for personal use | Commercial $50/user/year |
| 機能 | All-in-one workspace, Database views, Team wikis, API & integrations, AI assistant built-in | Local-first markdown files, Bidirectional linking, Graph view, Plugin ecosystem (1000+), Full offline support |
| こんな人に最適 | Teams that want docs, wikis, and project tracking in one tool | Power users and developers who want to own their data and build a personal knowledge graph |
| 学習コスト | 普通 | 難しい |
本当の違い
Both offer free tiers, so the real question is what you get when you start paying.
Notion stands out with All-in-one workspace and Database views. Obsidian counters with Local-first markdown files and Bidirectional linking.
Notion's Achilles heel: gets slow with large databases and complex setups. Obsidian's: no real-time collaboration — syncing across devices requires paid add-on or diy solution. Pick whichever weakness you can live with.
結論
If you value all-in-one workspace and ドキュメント、wiki、プロジェクト管理を1つのツールにまとめたいチーム向け, go with Notion. If 自分のデータを自分で持ちたい、パーソナルなナレッジグラフを作りたいパワーユーザーや開発者向け matters more, Obsidian is your pick. Neither is a bad choice — but one will fit your workflow better.