Alternative
Dropbox vs Sync.com
The closest like-for-like Dropbox replacement that genuinely can't read your files.
Why it beats Dropbox. It is the cleanest answer to the central Dropbox criticism in this archive: because Sync.com is zero-knowledge, it cannot hand readable files to a government, an attacker who breaches it, or its own staff — the exact opposite of Dropbox's server-side-key model. It also moves your data out of U.S. jurisdiction.
Dropbox vs Sync.com, head-to-head
| Dropbox | Sync.com | |
|---|---|---|
| Can the provider read your files? | Yes (holds the keys) | No (zero-knowledge) |
| Zero-knowledge by default | No | Yes |
| Encryption model | Server-side encryption with Dropbox-held keys on core sync; optional end-to-end only on some Teams folders. | End-to-end, zero-knowledge AES-256 on every account (including free). Files are encrypted on your device; only you hold the key. |
| Legal jurisdiction | United States (CLOUD Act applies) | Canada (Toronto); data stored only in Canadian data centres — outside the U.S. CLOUD Act, under PIPEDA. |
| Notable breaches | 2012 breach (~68M credentials), 2024 Dropbox Sign breach, 2022 GitHub repo theft | No major breach reported |
| Free tier | 2 GB | 5 GB |
| Open source | No | No |
| Independent audits | SOC 2 / ISO (not zero-knowledge) | Independently security-reviewed; SOC 2 / PIPEDA / GDPR aligned |
Pros
- Zero-knowledge on every tier, free included — the provider cannot read your files
- Canadian jurisdiction and data residency (PIPEDA), outside the U.S. CLOUD Act
- Larger free tier than Dropbox (5 GB vs 2 GB) and cheaper 2 TB
- No known data breaches in its history
- Familiar Dropbox-style sync, sharing, and selective-sync
Trade-offs
- Zero-knowledge breaks some convenience features (no full-text search of file contents, weaker third-party-app ecosystem)
- No Linux desktop client (web + Windows/macOS/mobile)
- Fewer integrations than Dropbox
Best for
Dropbox users who want the same folder-sync workflow but with zero-knowledge privacy and a non-U.S. jurisdiction.
Switching from Dropbox
Closest drop-in replacement: install the Sync client, copy your exported Dropbox folder in, verify, then delete and cancel Dropbox (see the leave-Dropbox guide).
Full export & migration guide →Sources
Independent editorial comparison; no paid placement and no invented ratings. Facts current as of 2026 — verify current pricing and features before switching. Dropbox Watchdog is not affiliated with Sync.com or Dropbox.