NordLocker

AxCrypt

AxCrypt encrypts files and folders with AES-256 before they are stored or shared, integrating directly with cloud services like Google Drive, Dropbox, and OneDrive so encrypted files sync automatically. It combines file encryption with password management, secure text messaging, and shareable encrypted links, and has been in use for over 20 years across roughly 160 countries.

BestCrypt Container Encryption

BestCrypt Container Encryption, made by Finnish security vendor Jetico, creates encrypted virtual containers that behave like normal drives or folders for storing sensitive files. It is built to protect data placed in cloud-sync folders such as Dropbox: because the container is encrypted before it syncs, the underlying cloud provider and anyone who compromises the cloud account only ever sees encrypted bytes. The product works across Windows, macOS, Linux, and Android, and includes a portable BCTraveller tool for accessing encrypted containers on machines without BestCrypt installed. Jetico has built encryption and secure-wiping software for over 30 years and markets BestCrypt alongside its BestCrypt Volume Encryption and data-wiping product lines for endpoint data protection.

Filen

Filen is a German cloud storage provider built around AES 256-bit client-side encryption and a zero-knowledge architecture, meaning the company itself cannot read stored files. Alongside standard file sync and storage, it offers a network drive that mounts cloud storage as a local drive, encrypted notes with markdown support, and end-to-end encrypted chat. Filen's applications are open source, and the service supports WebDAV and S3 protocols along with a headless CLI for developers and automation. It is positioned as a security-focused alternative for individuals and small teams who want full encryption without losing everyday usability.

SpiderOak One

SpiderOak One is a secure cloud backup and file sharing service designed to prioritize user privacy through a zero-knowledge encryption architecture. This means that encryption keys are derived entirely from your master password, ensuring that no one other than you—not even SpiderOak employees—can access your stored data. The platform provides robust file versioning, automated background backups, and easy sharing capabilities across multiple operating systems. It is engineered for individuals and businesses seeking a high-security alternative to mainstream cloud storage providers without sacrificing convenience or reliability.

NordLayer

NordLayer is a business-focused network security platform built by Nord Security, distinct from the consumer NordVPN service. It gives organizations a cloud-native business VPN, Zero Trust Network Access, and site-to-site VPN to secure remote and hybrid teams without deploying traditional hardware. The platform adds threat prevention that blocks malicious sites, dark web monitoring for leaked credentials, and device posture checks, and NordLayer states it is ISO 27001, HIPAA, SOC 2, and PCI-DSS compliant. NordLayer says over 15,000 businesses use the platform and that deployment can take as little as 10 minutes rather than months.

Internxt

Internxt is a Spain-based cloud storage service built around zero-knowledge, client-side encryption, meaning files are encrypted on the user's device before upload so that not even Internxt can access their contents. It combines AES-256 encryption with post-quantum cryptography (Kyber-512) and offers apps for web, iOS, and Android, along with password-protected file sharing links. The service positions itself as a European alternative to large US cloud providers, citing GDPR compliance, ISO 27001:2022 certification, and an independent third-party security audit. Plans range from a free 1GB tier up to paid Essential, Premium, and Ultimate tiers offering 1TB, 3TB, and 5TB of storage respectively, available as annual subscriptions or one-time lifetime purchases, alongside separate business plans.