Open Source Resilio Sync Alternatives

Nextcloud is an open source, self-hosted file sync and share platform that allows organizations to store, share and collaborate on files securely.

Key features include:

• File sync and sharing across devices
• Real-time document collaboration
• Video calls and chat
• Calendar, contacts and email integration
• Advanced security and access control
• On-premises hosting for full data control
• Customizable and extensible through apps

Nextcloud is designed for organizations that need secure file sharing and collaboration while maintaining control over their data. It can be deployed on-premises or with a trusted cloud provider.

Some key benefits of Nextcloud:

• Improved productivity through integrated collaboration tools
• Enhanced security with end-to-end encryption and granular permissions
• Compliance with data protection regulations like GDPR
• Lower costs compared to proprietary cloud solutions
• Flexibility to customize and extend functionality

Nextcloud is used by thousands of organizations worldwide, including major enterprises, educational institutions and government agencies. It provides a powerful yet easy-to-use platform for secure content collaboration.

Transform how you organize and collaborate on files with this powerful self-hosted solution that goes beyond traditional file syncing. Built for teams who need complete control over their data while maintaining seamless collaboration.

Key advantages:

• AI-powered file organization - Automatically generate descriptions, tags, and extract key information from your files
• Custom file properties - Add metadata like owner, status, and security level to make files easily searchable and filterable
• Flexible viewing options - Create table, gallery, kanban, and map views based on your file properties
• Real-time collaboration - Built-in document editor (SeaDoc) with co-editing, revision tracking, and review workflows
• Granular permissions - Control access at folder and sub-folder levels with read/write, read-only, and preview permissions
• Enterprise security - Advanced encryption, comprehensive audit logs, and file history recovery
• Multi-level tagging - Organize tags in hierarchical structures for better categorization

Perfect for teams seeking:

• Complete data ownership and privacy
• Advanced file organization capabilities
• Seamless collaboration without vendor lock-in
• Enterprise-grade security and compliance features

Trusted by over 1 million users worldwide, this solution offers the perfect balance of powerful features and data sovereignty.

OpenCloud is a file management and collaboration platform built for organizations that need full control over their data. It's developed by the Heinlein Group, a Berlin-based open source IT company with three decades of experience. The platform targets public sector bodies, research institutions, educational organizations, and businesses that can't afford to hand their data to a third-party cloud provider.

At its core, OpenCloud handles what tools like Nextcloud or Seafile also tackle: storing, syncing, and sharing files across teams. What sets it apart is its cloud-native architecture designed for high data volumes and large user counts, combined with a strong emphasis on GDPR compliance and zero-trust security principles.

Key capabilities include:

• Integrated office suite for real-time document collaboration without switching tools
• Encryption and secure versioning that protects against ransomware
• Two-factor authentication and flexible access rights management
• On-premise or SaaS deployment through selected partners, depending on your infrastructure needs
• Mobile accessibility with a barrier-free interface suited for distributed teams

For IT administrators, the platform is designed to slot into existing infrastructure without heavy customization. Installation is straightforward, and the system handles growing teams without performance degradation.

OpenCloud sits in the same cloud file sync and share space as Dropbox alternatives, but with a self-hostable model that keeps data under your organization's control. The zero-trust approach means access is verified continuously, not just at login. That makes it a practical fit for regulated industries or public institutions where data residency requirements are non-negotiable.

Sync-in is an open-source file storage and collaboration platform that puts you in complete control of your data. Unlike traditional cloud services, you host everything on your own infrastructure, ensuring data sovereignty and compliance with regulatory requirements.

Key features include:

• Real-time collaborative editing with Collabora Online and OnlyOffice integration
• Advanced file synchronization across Windows, macOS, and Linux devices
• Collaborative spaces for team organization with granular permissions
• Smart search with full-text content indexing across document types
• Secure sharing with customizable access controls and expiration dates
• WebDAV integration for seamless file explorer mounting

The platform combines security by design with modern performance, offering a scalable architecture suitable for individual users to enterprise deployments. Built with transparency at its core, Sync-in benefits from continuous community contributions while maintaining the highest security standards.

Whether you need to collaborate with external partners through the guest system, manage complex file workflows, or ensure regulatory compliance, Sync-in provides a powerful alternative to proprietary cloud storage solutions without compromising on functionality or user experience.

Peergos is a revolutionary platform that puts you in control of your digital life. Built on peer-to-peer technology and end-to-end encryption, Peergos offers a secure and private alternative to traditional cloud storage services.

Key benefits of Peergos include:

• Complete privacy: All your files are encrypted before leaving your device, ensuring that only you and those you choose can access your data.
• Decentralized architecture: Your files are distributed across the network, eliminating single points of failure and reducing the risk of data loss.
• Seamless file sharing: Share files and folders with friends, family, or colleagues while maintaining granular control over access permissions.
• Versioning and backup: Automatically keep track of file changes and easily restore previous versions when needed.
• Open-source transparency: The entire Peergos codebase is open-source, allowing for community audits and contributions.
• Cross-platform compatibility: Access your files from any device with a web browser or dedicated apps for desktop and mobile.
• No file size limits: Upload and store files of any size without artificial restrictions.
• Offline access: Work on your files even when you're not connected to the internet.

With Peergos, you can store, share, and collaborate on your files with peace of mind, knowing that your data remains under your control and protected from prying eyes. Experience the future of secure, decentralized file storage today.

ownCloud is a file sync and share platform built for organizations that can't afford to hand their data to a public cloud. It's trusted by over 200 million users and targets enterprises, regulated industries, and teams with strict data governance requirements. You can deploy it on-premises, in a private data center, or in a hybrid setup.

The current platform, Infinite Scale (oCIS), is built on a three-tier architecture that separates storage, backend, and frontend through well-defined APIs. That design makes it easier to scale, audit, and secure than monolithic alternatives like a basic file server or a generic Nextcloud instance.

Key capabilities include:

• Spaces: Project folder concept for remote teams that reduces admin overhead and keeps data access controlled per project
• Web Office integrations: OnlyOffice, Collabora Online, Microsoft 365, and Microsoft Office Online for real-time co-editing without leaving the platform
• Granular sharing controls: Password-protected public links, expiration dates, and selective external sharing so outside contacts only see what you intend
• Multi-factor authentication and encryption: Built-in, not bolted on
• File lifecycle management: Version history, retention policies, and audit trails

Compliance coverage is broad. ownCloud is designed to meet GDPR, HIPAA, CCPA, LGPD, and the Cloud Computing Regulatory Framework. For organizations that need a managed option, ownCloud.online is hosted entirely in Germany.

The open-source program office (OSPO), operated under the Kiteworks umbrella, handles governance, licensing, and community health. It is worth noting that ownCloud's enterprise focus means tighter compliance tooling and formal support paths compared to more community-driven projects.

Take complete control of your digital life with a privacy-first personal cloud that automatically imports and organizes all your data from third-party services. This French-made solution combines the convenience of major cloud providers with the security and control you deserve.

Automatic data gathering pulls in bills, bank statements, receipts, health reimbursements, and payslips without manual effort. Your documents sync seamlessly across all devices - PC, smartphone, and tablet - eliminating tedious manual transfers.

Built-in tools include a secure note-taking system for private collaboration, and an integrated password manager that remembers and syncs all your credentials with one-click login. Your data stays protected with French hosting at OVH, Europe's largest hosting company.

Key advantages include:

• Open-source transparency with no hidden algorithms
• Zero advertising - your data isn't the product
• Privacy by design with French data protection standards
• Flexible pricing starting with free storage options
• 4.7/5 rating from over 100,000 satisfied users

Unlike Silicon Valley alternatives, this solution puts your privacy first while delivering the same convenience and functionality. Perfect for individuals, families, and professionals who want complete data sovereignty without sacrificing usability.

Secure your professional data with an open source encrypted storage solution that puts privacy first. Store, share, and collaborate on files with complete control over your data through on-premises deployment options.

Key features include:

• End-to-end encryption for maximum security with unique keys for each file
• Shared Drive functionality for seamless team collaboration
• Built-in office suite with OnlyOffice integration for creating documents, presentations, and spreadsheets
• Advanced search capabilities to quickly find files by content, name, or sender
• Flexible access controls with public or protected link sharing
• Self-hosted deployment to maintain complete data sovereignty

Perfect for businesses seeking privacy-focused file storage without compromising on functionality. The platform combines enterprise-grade security with an intuitive interface, making it easy for teams of any size to collaborate while keeping sensitive data protected. Built by LINAGORA, a leader in European open source solutions.