Dropbox vs Proton Drive——どっちが優秀？
Dropboxを選ぶべき人: 信頼できるファイル同期・共有・大容量ファイル転送が必要なフリーランサーや小規模チーム
Proton Driveを選ぶべき人: Proton Mailを信頼済みで、同じZero-Knowledgeアプローチでファイルも暗号化したいプライバシー第一のユーザー
私たちの見解: Dropbox for simplicity, Proton Drive for power users.
| Dropbox | Proton Drive | |
|---|---|---|
| 料金 | 2 GB free | Plus $11.99/mo (2 TB) | Free 1GB (5GB with Proton account) | Drive Plus $3.99/mo (200GB) |
| 機能 | Smart Sync for disk space management, Paper for collaborative docs, Transfer large files up to 100 GB, Version history (180 days), Third-party app integrations | End-to-end encrypted file storage and sharing, Zero-access encryption — even Proton cannot read your files, Built-in photo backup from mobile, Integrates with Proton Mail, Calendar, and VPN, Open-source clients audited by third parties |
| こんな人に最適 | Freelancers and small teams who need reliable file sync, sharing, and large file transfers | Privacy-first users who already trust Proton Mail and want their files encrypted with the same zero-knowledge approach |
| 学習コスト | 簡単 | 簡単 |
本当の違い
Both offer free tiers, so the real question is what you get when you start paying.
Dropbox stands out with Smart Sync for disk space management and Paper for collaborative docs. Proton Drive counters with End-to-end encrypted file storage and sharing and Zero-access encryption — even Proton cannot read your files.
Dropbox's Achilles heel: only 2 gb free is laughable in 2026 — google gives 15 gb and most competitors give 5–10 gb. Proton Drive's: storage amounts are small for the price — 200gb for $4/mo when google gives you 100gb for $2/mo. Pick whichever weakness you can live with.
結論
If you value smart sync for disk space management and 信頼できるファイル同期・共有・大容量ファイル転送が必要なフリーランサーや小規模チーム, go with Dropbox. If proton mailを信頼済みで、同じzero-knowledgeアプローチでファイルも暗号化したいプライバシー第一のユーザー matters more, Proton Drive is your pick. Neither is a bad choice — but one will fit your workflow better.