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Sync.com vs Dropbox: catalog facts
Sync.com	Dropbox
Freemium A small free tier is available. More storage requires a paid plan.	Freemium A small free tier is available. More storage and features require a paid plan.
Windows, macOS, Android, iOS, Web	Windows, macOS, Linux, Android, iOS, Web
Zero-knowledge encryption applies to everything by default, not as an add-on Sharing links with passwords, expiry and download limits	The most mature and reliable sync engine, with clients everywhere Smart sync keeps large libraries usable on small disks
No Linux client Zero-knowledge means a forgotten password can mean permanent data loss	The free tier is only a few gigabytes and caps linked devices Files are stored unencrypted from the provider's point of view
Downloadable app, Hosted service	Downloadable app, Hosted service
Closed source	Closed source
License not stated	License not stated
Account needed	Account needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked September 22, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.