Quick answer
Google Drive or OneDrive cover most general use. For privacy, pick Proton Drive or Sync.com. For full control, Nextcloud.
Dropbox is excellent at sync but one of the pricier major providers. The alternatives below cover similar ground with different trade-offs.
Google Drive
Best overall alternative
Free 15 GB, deep integration with Google Workspace.
Pros
- Generous free tier
- Strong real-time collaboration
- Google Workspace integration
Cons
- Not E2EE by default
- Tied to a Google account
Best for: Workspace users, families, light cloud-storage needs.
OneDrive
Best for businesses on Microsoft 365
Bundled with M365. Excellent for Office files and Teams collaboration.
Pros
- Included in M365 plans
- SharePoint integration
- Personal Vault
Cons
- Best inside Microsoft ecosystem
- Not E2EE by default
Best for: Microsoft-centric businesses.
iCloud Drive
Best for Apple-only users
Apple's offering; with Advanced Data Protection most data becomes E2EE.
Pros
- Native on Apple devices
- Optional E2EE
- Affordable family pricing
Cons
- Cross-platform support is mediocre
- Not designed for heavy sharing
Best for: Apple households.
Proton Drive / Sync.com / Tresorit
Best privacy-focused options
Three providers with zero-knowledge encryption built in.
Pros
- E2EE by default
- Stronger privacy commitments
- Compliance-friendly options
Cons
- Smaller integration ecosystems
- Higher per-GB price
Best for: Anyone with a privacy or compliance requirement.
Self-hosted (Nextcloud)
Best for full control
Open-source platform you run on your own server or rent at a managed host.
Pros
- Full data control
- No vendor lock-in
- Active community
Cons
- Operational responsibility
- Performance varies by host
Best for: Tech-comfortable individuals and orgs with privacy or compliance constraints.