Proton Drive vs Sync.com: which Cloud storage wins in 2026?

We tested Proton Drive and Sync.com head-to-head on every criterion in our cloud storage methodology. Here's the verdict.

Verdict

Proton Drive wins overall

Based on 5 cloud storage criteria: Proton Drive wins 2, Sync.com wins 0, 3 tied.

Proton Drive
Winner
2
criteria won
Sync.com
0
criteria won

Feature-by-feature

CriterionProton DriveSync.comWinner
Effective $/TB/mo19.954Proton Drive
E2E by default?DefaultDefaultโ€”
Open-source clientYesNoProton Drive
JurisdictionSwitzerland (none)Canada (5 Eyes)โ€”
Free tier (GB)55โ€”

Total cost of ownership

HorizonProton DriveSync.comCheaper
12 months$48$96Proton Drive
36 months$144$288Proton Drive
120 months$479$960Proton Drive