What is the best cloud storage and sync tool right now?

Box leads this list by user signals — it is best for mid-size and large enterprises that need compliance-grade file storage (hipaa, finra, gdpr) plus ai-powered document workflows, not just file sync. Contabo is the strongest runner-up.

Which cloud storage and sync are free?

15 of the 18 tools here have a usable free tier or are fully free: Box, Dropbox, Google Drive, Icedrive, MEGA and 10 more.

Are there open-source cloud storage and sync?

Yes — Nextcloud, Proton Drive, Seafile, Syncthing, ownCloud are open source.

18 Best Cloud storage and sync in 2026

Cloud storage and sync services back up files online and keep folders synced across devices, used by individuals and teams sharing documents remotely.

Top cloud storage and sync

Tool	Best for	License	Price	Reviews
Box	mid-size and large enterprises that need compliance-grade file storage (HIPAA, FINRA, GDPR) plus AI-powered document workflows, not just file sync	Freemium	Free	4.4/5 on Capterra (5,641 reviews)
Contabo	Developers and small businesses that want a high-RAM, multi-core Linux or Windows VPS for self-managed workloads (game servers, Plex/media storage, dev/test boxes) at a lower monthly price than AWS, DigitalOcean, or Linode.	Paid	From $6.99/mo
Dropbox	individuals and teams who need dependable cross-device file sync and simple sharing links, especially teams already invoking Dropbox's large-file-transfer and version-history features	Freemium	Free tier · paid from $9.99/mo	4.5/5 on Capterra (21,704 reviews)
Google Drive	individuals and teams already using Google Docs, Sheets, and Slides who want real-time collaborative editing with simple cloud storage and sharing links	Freemium	Free tier · paid from $1.99/mo	4.8/5 on Capterra (28,587 reviews)
IONOS	US small businesses wanting one vendor for a domain, SSL, email, and web hosting bundled into a cheap first-year plan	Paid	From $1/mo
Icedrive	privacy-conscious individuals who want low-cost cloud storage with client-side encryption and are comfortable with a smaller feature set than Dropbox or Google Drive	Freemium	Free tier · paid from $1.67/mo
MEGA	privacy-conscious individuals and small teams who want client-side end-to-end encrypted cloud storage where the provider cannot access file contents	Freemium	Free
Nextcloud	organizations that want a self-hosted, data-sovereign alternative to Google Workspace or Microsoft 365 for file sync, groupware, and video conferencing	Open core	Free	4.6/5 on Capterra (443 reviews)
OneDrive	households and businesses already paying for Microsoft 365 who want file storage that co-authors Word, Excel, and PowerPoint documents natively	Freemium	Free tier · paid from $1.99/mo	4.5/5 on Capterra (12,828 reviews)
Proton Drive	privacy-focused individuals and small teams who want end-to-end encrypted cloud storage with a genuinely usable free tier and open-source, independently-audited clients	Open source	Free tier · paid from $4.99/mo
Seafile	small IT teams and privacy-focused organizations that want to self-host Dropbox-style file sync with granular permissions and optional office-document editing	Open core	Free tier · paid from $8/mo
Sync.com	privacy-conscious individuals and regulated businesses (legal, healthcare, finance) who need zero-knowledge encrypted file storage that even the vendor cannot read	Freemium	Free tier · paid from $4/mo	4.3/5 on Capterra (57 reviews)
Syncthing	privacy-conscious individuals and self-hosters who want continuous file sync across their own devices without routing data through a third-party cloud server	Open source	Free	5/5 on Capterra (1 reviews)
Tresorit	financial, legal, and healthcare teams that need zero-knowledge encrypted file storage plus encrypted data rooms for sharing with outside parties	Paid	Custom pricing	4.8/5 on Capterra (130 reviews)
Zoho Workplace	Small and midsize teams that want business email, office documents, chat, and video meetings from a single vendor at a lower per-seat cost than Google Workspace or Microsoft 365.	Freemium	Pricing not verified
iCloud Drive	Apple ecosystem users who want files, photos, and backups to sync automatically across iPhone, iPad, and Mac without manual transfers	Freemium	Free tier · paid from $0.99/mo
ownCloud	organizations that need full control over where their files are stored (self-hosted or EU-hosted) and want an open-source alternative to Dropbox or Google Drive for file sync and sharing	Open core	Free	4.3/5 on Capterra (60 reviews)
pCloud	users who want to pay once for cloud storage instead of an ongoing monthly subscription, and who value choosing between EU and US data residency	Freemium	Free tier · paid from $199 one-time	4.5/5 on Capterra (180 reviews)

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Alternatives to Box3 Alternatives to Contabo5 Alternatives to Dropbox6 Alternatives to Google Drive6 Alternatives to IONOS2 Alternatives to Icedrive5 Alternatives to MEGA5 Alternatives to Nextcloud5 Alternatives to OneDrive5 Alternatives to Proton Drive5 Alternatives to Seafile5 Alternatives to Sync.com5 Alternatives to Syncthing4 Alternatives to Tresorit5 Alternatives to Zoho Workplace3 Alternatives to iCloud Drive5 Alternatives to ownCloud5 Alternatives to pCloud5

Frequently asked questions

What is the best cloud storage and sync tool right now?: Box leads this list by user signals — it is best for mid-size and large enterprises that need compliance-grade file storage (hipaa, finra, gdpr) plus ai-powered document workflows, not just file sync. Contabo is the strongest runner-up.
Which cloud storage and sync are free?: 15 of the 18 tools here have a usable free tier or are fully free: Box, Dropbox, Google Drive, Icedrive, MEGA and 10 more.
Are there open-source cloud storage and sync?: Yes — Nextcloud, Proton Drive, Seafile, Syncthing, ownCloud are open source.