Best cloud storage and file sync services

End-to-end encrypted cloud storage from the Swiss company behind Proton Mail.

The original file-sync service, known for dependable desktop sync and easy sharing.

Swiss cloud storage with lifetime plans, a virtual drive and optional client-side encryption.

Open-source, self-hosted file sync and collaboration suite that replaces Google Drive.

Unlimited, set-and-forget cloud backup for a Mac or Windows PC at a flat price.

Google's cloud drive, tied into Gmail, Photos and the Docs editors, with 15 GB free.

Canadian end-to-end encrypted cloud storage with sharing features similar to Dropbox.

Cloud backup for unlimited computers, phones and servers in one account, plus sync.

Free, open-source peer-to-peer folder sync between your own devices, with no cloud.

Enterprise cloud content platform with sharing, workflows, e-signature and AI on top of storage.

Open-source command-line tool to sync, copy and mount files across 70+ cloud services.

Zero-knowledge encrypted cloud storage from New Zealand with generous storage tiers.

Zero-knowledge encrypted file sharing and sync for businesses, under Swiss privacy law.

Microsoft's cloud drive, built into Windows and bundled with Microsoft 365 plans.

Open-source, end-to-end encrypted cloud storage from Spain with lifetime plans.

Encrypted, versioned backup app for Mac and Windows that sends data to storage you choose.

Slovenian cloud storage without tracking that can also connect your other cloud accounts.

Business file sharing and governance platform with hybrid cloud and on-premises options.

Automatic, unlimited cloud backup for home and small-business computers, now part of OpenText.

Open-source self-hosted file sync known for speed, organised into versioned libraries.

UK cloud storage with client-side Twofish encryption, a virtual drive and lifetime plans.

German end-to-end encrypted cloud storage with open-source apps and low euro prices.

Free, open-source encrypted backup to cloud or local storage, with an optional console.

Open-source command-line backup program with encryption and deduplication.

Disk imaging, local and cloud backup, and anti-malware in one personal app.

Open-source self-hosted file sync and share, now rebuilt as ownCloud Infinite Scale.

Secure client file exchange, portals and e-signature for professional services firms.

Norwegian cloud backup and storage with an unlimited plan and data kept in Norway.

Fast, open-source backup tool with encryption, deduplication and both GUI and CLI.

Enterprise file sharing you can self-host or buy as a managed cloud service.

Peer-to-peer file sync between your devices, now free with former Pro features.

Apple's built-in cloud storage for files, photos and device backups across Apple devices.

Self-hosted document sharing platform written in Go, with a free home edition.

Free, open-source app that encrypts your files before they reach any cloud drive.

Encrypted cloud storage and file vaults from the makers of NordVPN.

Endpoint backup for business laptops and servers with unlimited versioning.

Mobile-first cloud storage with a large ad-supported free tier aimed at phone photos.

UK-based unlimited cloud backup with an optional sync folder called Briefcase.

Long-running cloud sync service that can back up any folder on your computer.

Cloud storage from Yandex with unlimited phone photo uploads on paid plans.

Team file storage and collaboration from Zoho, priced per user with pooled team storage.