2026年版 Dropboxの代替ツール

Dropboxから乗り換える理由

TLDR

無料2GBは2026年に笑えるレベル — Googleは15GB、ほとんどの競合は5〜10GB提供

Dropbox free: 2 GB free | easy learning curve

Google Drive

15 GB free (shared with Gmail and Photos)

何が違うのか: Anyone already in the Google ecosystem who wants seamless file storage tied to Docs, Sheets, and Gmail

料金比較: Dropbox: Plus $11.99/mo (2 TB) | Google Drive: Google One 100 GB $1.99/mo

Deep Google Workspace integrationReal-time collaboration on Docs/Sheets/SlidesPowerful search across files
Dropbox vs Google Driveを比較

OneDrive

5 GB free

何が違うのか: Microsoft 365 users who want cloud storage that works seamlessly with Word, Excel, and Outlook

料金比較: Dropbox: Plus $11.99/mo (2 TB) | OneDrive: Microsoft 365 Basic $1.99/mo (100 GB)

Deep Microsoft 365 integrationPersonal Vault for sensitive filesReal-time co-authoring in Office apps
Dropbox vs OneDriveを比較

Box

10 GB free (personal)

何が違うのか: Enterprises that need bulletproof compliance, audit trails, and governance for regulated industries

料金比較: Dropbox: Plus $11.99/mo (2 TB) | Box: Business $15/user/mo

Enterprise-grade security and complianceBox Sign for e-signaturesWorkflow automations
Dropbox vs Boxを比較

pCloud

10 GB free

何が違うのか: Privacy-focused users who want a one-time lifetime payment instead of monthly subscriptions forever

料金比較: Dropbox: Plus $11.99/mo (2 TB) | pCloud: Premium 500 GB $49.99/year

Lifetime plan optionClient-side encryption (paid add-on)Built-in media player
Dropbox vs pCloudを比較

Sync.com

5 GB free

何が違うのか: Privacy-first teams that want zero-knowledge encryption included by default with no extra cost

料金比較: Dropbox: Plus $11.99/mo (2 TB) | Sync.com: Teams Standard $6/user/mo (1 TB)

End-to-end encryption by defaultZero-knowledge privacyHIPAA and GDPR compliant
Dropbox vs Sync.comを比較

Tresorit

Personal $11.99/mo (1 TB)

何が違うのか: Businesses handling sensitive data that need Swiss-grade encryption and EU data residency guarantees

料金比較: Dropbox: Plus $11.99/mo (2 TB) | Tresorit: Personal $11.99/mo (1 TB)

End-to-end encryptionSwiss privacy jurisdictionSecure file sharing with expiry
Dropbox vs Tresoritを比較

MEGA

20 GB free

何が違うのか: Users who want the most generous free encrypted storage without handing data to big tech companies

料金比較: Dropbox: Plus $11.99/mo (2 TB) | MEGA: Pro Lite $5.56/mo (400 GB)

End-to-end encryption by defaultGenerous free storageSecure chat and video calls
Dropbox vs MEGAを比較

iCloud

Free 5GB with any Apple ID

何が違うのか: Apple users who want effortless backup and sync without thinking about it — it just works if you are all-in on Apple

料金比較: Dropbox: Plus $11.99/mo (2 TB) | iCloud: iCloud+ 50GB $0.99/mo

Seamless sync across iPhone, iPad, and MaciCloud Drive with Finder and Files app integrationPrivate Relay for anonymous web browsing (paid)
Dropbox vs iCloudを比較

Proton Drive

Free 1GB (5GB with Proton account)

何が違うのか: Privacy-first users who already trust Proton Mail and want their files encrypted with the same zero-knowledge approach

料金比較: Dropbox: Plus $11.99/mo (2 TB) | Proton Drive: Drive Plus $3.99/mo (200GB)

End-to-end encrypted file storage and sharingZero-access encryption — even Proton cannot read your filesBuilt-in photo backup from mobile
Dropbox vs Proton Driveを比較

よくある質問

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