Open Source Microsoft OneDrive Alternatives

Puter offers a revolutionary approach to personal cloud computing, combining privacy, security, and accessibility in one comprehensive platform. Here's what makes Puter stand out:

Privacy-First Approach: Your data remains yours alone, with robust encryption and security measures ensuring your information stays private.

All-in-One Solution: Puter isn't just for file storage. It's a complete ecosystem for:

• File management
• App usage
• Game playing

All seamlessly integrated into one secure environment.

Universal Access: Whether you're at home, in the office, or on the go, your entire digital world is at your fingertips. Access your files, use your favorite apps, and even play games from any device with an internet connection.

Intuitive Interface: Puter's user-friendly design mimics a familiar desktop environment, making it easy for anyone to navigate and use effectively.

Customization: Tailor your Puter experience to your needs. Organize your files, arrange your apps, and create a digital space that works for you.

By choosing Puter, you're not just getting cloud storage – you're embracing a new way of interacting with your digital life, one that prioritizes your privacy while offering unparalleled convenience and functionality.

Important: Development paused due to funding constraints (source).

Spacedrive revolutionizes file management by creating a virtual distributed filesystem across all your devices. This open-source application offers a unified interface to access, organize, and manage your files, regardless of their physical location.

Key benefits of Spacedrive include:

• Unified Access: Connect and browse files from multiple devices and cloud services in one place.
• Smart Organization: Utilize powerful tagging, categorization, and search features to keep your digital life in order.
• Cross-Platform Compatibility: Seamlessly work across Windows, macOS, Linux, iOS, and Android.
• Privacy-Focused: Your data remains under your control, with optional end-to-end encryption.
• Customizable: Tailor the interface and workflows to suit your specific needs.
• Offline Capabilities: Access your virtual filesystem even without an internet connection.
• Media Management: Enjoy built-in media viewing and playback features.
• Version Control: Keep track of file changes and revert when needed.
• Extensible: Enhance functionality with a growing ecosystem of plugins and integrations.

Spacedrive empowers you to take control of your digital assets, providing a seamless experience across all your devices and storage solutions. Whether you're a creative professional managing large media libraries, a developer organizing code repositories, or simply someone looking to declutter their digital life, Spacedrive offers the tools you need to create a more efficient and organized digital workspace.

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.

Ente is a revolutionary cloud storage platform designed for those who value privacy and security in the digital age. With a focus on protecting your precious memories, Ente offers end-to-end encryption for all your photos and videos, ensuring that only you have access to your personal content.

Key benefits of Ente include:

• Uncompromising Security: Your data is encrypted on your device before being uploaded, making it impossible for anyone, including Ente, to access your files without your permission.

• Cross-Device Syncing: Seamlessly access your photos and videos across all your devices, with real-time updates and automatic backups.

• User-Friendly Interface: Enjoy a clean, intuitive design that makes organizing and sharing your media effortless.

• Sharing with Confidence: Share albums or individual photos securely with friends and family, maintaining control over who can view your content.

• Open Source Transparency: Ente's commitment to privacy is backed by its open-source nature, allowing for community verification of security practices.

• Affordable Plans: Choose from flexible storage options that cater to your needs without breaking the bank.

• No Ads or Data Mining: Your personal information is never sold or used for targeted advertising.

Experience the peace of mind that comes with knowing your digital memories are safe, accessible, and under your control with Ente.

Filestash is a versatile, open-source file management solution designed for enterprises. It offers a unified interface to access and manage files across various storage backends, including S3, SFTP, FTP, WebDAV, Samba, and many more.

Key features include:

1. Universal File Manager: Browse, organize, and share files across multiple storage solutions through a single intuitive interface.

2. SSO Integration: Seamlessly integrates with corporate SSO systems like LDAP, SAML, and OIDC for secure and familiar authentication.

3. White-Label Solution: Customize Filestash's appearance to match your company branding and deploy it as your own solution.

4. Extendable Architecture: Utilize plugins to extend functionality and adapt to specific business needs. Custom plugin development is available for specialized requirements.

5. Security & Compliance: Maintain high security standards with activity logs and audit trails, allowing you to monitor user actions and protect confidential data.

6. Wide Range of Supported Backends: Compatible with popular storage solutions like S3, SFTP, FTP, WebDAV, Samba, Minio, Azure Blob, Git, and many others.

7. Enterprise-Ready: Trusted by notable organizations including MIT, DHL, Schneider Electric, and others.

Filestash offers both an open-source version for self-deployment and an enterprise version with additional features and support. It's an ideal solution for businesses looking to streamline file management across diverse storage systems while maintaining security and compliance.

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 delivers enterprise-level file sharing and collaboration with a focus on security, simplicity, and digital sovereignty. Built on 30 years of open source expertise, it provides organizations with powerful tools to make their knowledge more accessible and manageable.

The platform features an intuitive interface that new users can quickly master, while IT administrators benefit from straightforward deployment and integration. Security is paramount, with comprehensive features including end-to-end encryption, flexible access controls, two-factor authentication, and ransomware protection through secure versioning.

Key benefits include:

• Seamless real-time collaboration with integrated office suite
• Full GDPR compliance and data sovereignty
• Cloud-native architecture for superior performance
• Flexible deployment options (on-premise or SaaS)
• Zero-trust security model
• Simple integration with existing IT infrastructure

Whether serving public authorities, research institutions, educational organizations, or businesses, OpenCloud combines enterprise-grade security with user-friendly collaboration tools to help teams work more efficiently while maintaining complete control over their data.

Papra is an open-source document management solution that brings order to digital chaos. With features like automated email attachment ingestion and intelligent document tagging, it streamlines how you organize and access your files.

Key benefits include:

• Centralized document storage - Keep all your files in one secure location instead of scattered across platforms
• Smart email integration - Forward emails to a unique address and automatically save attachments
• Powerful search capabilities - Find any document instantly with advanced search functionality
• Flexible organization - Use tags to create a customized filing system that works for your needs

Whether you're an individual looking to organize personal documents or a business seeking to improve document workflows, Papra provides the tools to make document management effortless and efficient.

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.

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.

Firefiles revolutionizes cloud storage management by offering a unified platform for all your storage needs. Here's what makes Firefiles stand out:

1. Multi-Provider Support: Seamlessly integrate with popular cloud storage providers like Firebase, AWS, Digital Ocean, Backblaze, and more.

2. Open Source: Fully open-sourced on GitHub, ensuring transparency and community-driven development.

3. Enhanced Security: Offers superior security and privacy compared to traditional cloud storage solutions.

4. User-Friendly Interface:

   • Intuitive dashboard for managing multiple drives
   • Light and dark UI themes
   • File preview functionality directly in the browser

5. Efficient File Management:

   • Easy simultaneous upload of multiple files
   • Quick downloads with a single click
   • File preview without downloading

6. Customizable: Set up your cloud drive with the backend of your choice.

7. Team Collaboration: Invite team members to your cloud drives (coming soon).

8. Cross-Platform: Available for MacOS, Windows, and Linux.

Firefiles is designed to be the last cloud storage solution you'll ever need, combining the flexibility of multiple providers with the simplicity of a single, user-friendly interface. Whether you're an individual user or part of a team, Firefiles offers a seamless experience for all your file storage and management needs.

Vanguard is a powerful, community-driven backup solution designed to protect your critical data with ease and flexibility. Whether you're managing servers, databases, or applications, Vanguard has you covered.

Key Features:

• End-to-end encryption ensures your backups remain secure
• Multi-database support for MySQL and PostgreSQL
• Flexible scheduling to fit your specific backup needs
• Mobile app for on-the-go backup management (Android available)

How It Works:

1. Connect Vanguard to your servers securely via SSH
2. Configure backup sources (databases, files) and destinations
3. Set up automated schedules or use cron for precise timing
4. Monitor backups through an intuitive dashboard or mobile app

Deployment Options:

• Self-host Vanguard for complete control
• Try the cloud-hosted version for quick setup

Vanguard empowers you to take charge of your data protection strategy. With its open-source nature, you benefit from continuous community improvements and the flexibility to adapt the solution to your unique needs.