Best Free Cloud Storage

What separates the top picks on this page?

Three services, three different answers to the same question. Google One (Drive) scores 8.1 and costs $99.99. Proton Drive scores 7.8 and costs $119.88. Microsoft OneDrive scores 7.6 and costs $99.99.

Speed is where Google One pulls away. It moved 10 GB in 13 minutes in our test. Proton Drive took 26 minutes for the same 10 GB. If you upload large files often, that gap is the whole decision.

Privacy runs the other way. Proton Drive encrypts file names and folder structure end to end, sits under Swiss jurisdiction, and ships open-source clients that have been audited. Google One has no zero-knowledge option — Google holds the keys and indexes content. OneDrive is the same story: Personal Vault is a second factor, not encryption Microsoft cannot break.

Value depends on what you already pay for. OneDrive gives you 1 TB plus desktop Word, Excel, Outlook and PowerPoint for $99.99 a year. Google One gives you Docs, Sheets and Slides collaboration nothing else here matches, plus Google Photos search that finds pictures by what is in them. Proton Unlimited bundles Mail, VPN, Pass and Calendar for one price.

What should you check before buying?

Our scoring weighs sync speed and reliability at 25, privacy and encryption at 25, features and sharing at 20, platform coverage at 10, and value at 20. Run your own habits against those weights.

• Upload size and frequency. 13 minutes versus 26 minutes for 10 GB only matters if you move big files.
• Who can read your files. Proton Drive encrypts names and structure; Google One and OneDrive do not offer zero-knowledge.
• Your operating systems. Google One has no official Linux client.
• Large folders. OneDrive sync has historically struggled with very large folders.
• Capacity. Proton Drive storage sizes are small — 500 GB at the top of the consumer bundle.
• What else is in the box. OneDrive includes desktop Office; Proton Unlimited includes Mail, VPN, Pass and Calendar.

Google One (Drive)

For people who live in Google Docs, Sheets and Slides and want the fastest sync we measured. Skip it if you need zero-knowledge encryption or run Linux.

Proton Drive

For anyone who wants end-to-end encryption on file names and folder structure, Swiss jurisdiction, and audited open-source clients. Accept the 26-minute upload and the 500 GB ceiling.

Microsoft OneDrive

For Windows users who would buy Word and Excel anyway — 1 TB plus the desktop Office suite for $99.99 a year. Files On-Demand keeps the library off your local disk.

Pick Google One (Drive) if you want the fastest sync we measured and live in Google's apps. Pick Proton Drive if end-to-end encryption on file names and folder structure matters more than upload speed. Pick Microsoft OneDrive if you would buy desktop Office anyway and want 1 TB alongside it.