Best Cloud Storage Services

Proton Drive is the all-in-one workspace for storing sensitive data and collaborating with your teams, clients, and partners. Collaborate securely without compromising control: Share client files, contracts, and sensitive business documents with full end-to-end encryption. You control who can access what. Set passwords, add expiry dates, 
 or revoke access anytime. Protect all your business data:
Plans come with 1 TB of storage allowance per user, giving your team enough space for all their files and docs. You can always add more storage later if needed. Simplify compliance across industries: Proton Drive supports GDPR, HIPAA, NIS2, DORA, and ISO 27001 compliance out of the box, and has been successfully audited for SOC 2 Type II. There's no need for custom configurations or third-party tools, as this helps you meet regulatory standards with minimal effort.

6,000+ companies trust Files.com to automate and secure business critical transfers. We obsess about security, compliance, reliability, and performance so your critical business processes just work every time. Easily manage any transfer flow without writing scripts or code, and onboard workloads and partners effortlessly. We support standard file transfer protocols (FTP, SFTP, AS2) for working with external partners and also provide native apps for high performance internal transfers. As a fully Cloud-Native SaaS, there are no servers for you to buy or maintain, there is no installation required, and high availability and redundancy are built in and free. Out-of-the-box integrations include Microsoft (Azure, SharePoint, OneDrive, Active Directory & Office), AWS (S3 & SNS), Google (Cloud & Drive), Box, Dropbox, Zapier, and dozens of others. Developers can leverage our SDKs, API, and CLI to build custom integrations too.

End-to-end encrypted file sync & sharing Tresorit is the ultra-secure place in the cloud to store, sync and share files easily from anywhere, anytime. Tresorit is powered by end-to-end encryption, therefore it seals your files away from internal data breaches and hackers. All the data is securely stored according to the GDPR in Europe in Microsoft Azure datacenters. Manage who can add, edit or only view the data you shared. Team members can securely access the updated files using their browser, desktop, or mobile device, wherever they are. Files can be shared with the same secure manners outside your company as well. Replace risky email attachments with ultra-secure share links. Thanks to end-to-end encryption, nothing leaves your device unencrypted, meaning only you and your recipient can open the files. Utilize the new Content Shield features for your Business to secure collaboration with external parties. Read more here: https://tresorit.com/tresorit-content-shield

Leading-edge encryption at your fingertips. We use the most advanced ciphers and principles, featuring Argon2, AES256, ECC (with XChaCha20, EdDSA and Poly1305), and other creations of modern cryptography to guarantee ultimate security of your files. Think of all the personal files you’d rather keep private. Prevent them from ending up in the wrong hands and being exploited in malicious ways. Finances, IDs, passwords. Getting this info compromised may lead to identity theft or loss of money. NordLocker ensures top-notch security for your sensitive data. Whether it’s your diary or a secret music collection, NordLocker protects it from prying eyes so you don’t have to worry about someone trying to snoop on you. Use NordLocker to ensure secure file access and make your professionalism shine when sharing your work with clients.

Skiff is a private, end-to-end encrypted workspace with Mail, Calendar, Pages, and Drive products for completely secure communication and collaboration. All Skiff products are designed with security and privacy in mind. All apps are built with end-to-end encryption (E2EE), so you never have to share your personal information, sensitive data, or private keys with anyone else. At all times, only you can access the content of your emails. Generous free tier - Enjoy 10 GB of free storage for your email, attachments, documents, and notes. - Create up to 4 free email aliases to protect your identity. Open-source and audited - Skiff Mail is open-source, uses open-source cryptography, and undergoes external security audits. - You can access our whitepaper and code at skiff.com. No trackers or ads - Sign up and upgrade without sharing any personal information; use crypto payments in many different currencies to upgrade. - Your data is never collected, sold, or shared.

Cubbit for Teams is a SaaS distributed cloud storage that provides businesses with complete security. Thanks to the distributed zero-knowledge network, not even the service provider can access the uploaded files, meaning Cubbit goes beyond the facade of regulatory compliance. Cubbit for Teams reimagines the concept of security by providing an easy-to-use platform: zero-knowledge and end-to-end encryption protects the user as he saves, syncs and shares its data. Information can be accessed from anywhere at any time through the web-app, while employee permissions are managed with the click of a button. Files are shared with no size limit and unsecured email is replaced by Cubbit Private Links: a 100% secure sharing method that matches an encryption key to the folder. Relying on a distributed architecture instead of traditional data-centers allows Cubbit to be cost-effective and provide a significantly cheaper service than the competition. Plus, you will save CO2 per file stored.