The best Dropbox alternative on Windows and for Microsoft 365 users: 1 TB plus the Office apps costs less than Dropbox Plus, and sync is built into File Explorer, but the free tier is only 5 GB and there is no official Linux app.
What it is
OneDrive syncs files through File Explorer on Windows, a Mac app and iOS and Android apps, with Files On-Demand, automatic PC folder backup, camera upload, version history, ransomware detection and recovery on Microsoft 365 plans, and Personal Vault, an extra-verified folder (3 files on the free plan, unlimited with Microsoft 365). Files up to 250 GB each can be uploaded with the sync app or a recent browser. US plans: free 5 GB with a Microsoft account; Microsoft 365 Basic $19.99 a year or $1.99 a month for 100 GB; Microsoft 365 Personal $99.99 a year or $9.99 a month for 1 TB plus Word, Excel, PowerPoint and Outlook with Copilot (a first-year offer of $69.99 was running); Microsoft 365 Family $129.99 a year for up to 6 people sharing 2 TB; Microsoft 365 Premium $199.99 a year for up to 6 TB (1 TB per person) with extensive Copilot use. Storage is expandable up to 10 TB on Personal and above. Businesses get 1 TB per user through Microsoft 365 business plans. Files are encrypted in transit and at rest, but Microsoft holds the keys. Checked November 12, 2026 on microsoft.com and support.microsoft.com.
Best for
- Windows users
- Anyone who already pays for Microsoft 365
- Families who want Office apps and shared storage on one bill
What we like
- 1 TB plus the Office apps for $99.99 a year, less than Dropbox Plus at $119.88 for 2 TB
- Built into Windows File Explorer with Files On-Demand and PC folder backup
- Files up to 250 GB each
- Ransomware detection and file restore on Microsoft 365 plans
What to watch
- Free plan is only 5 GB
- No official Linux desktop app
- Personal Vault holds just 3 files without a subscription
- Family plan shares 2 TB across up to 6 people, so heavy users fill it fast